Some standard content:
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
50041-92
Code for design of boiler houses
Code for design of boiler houses
1992-11-25 Issued
1993-07-01 Implementation
National Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Design Specification
GB50041-92
Editor Department: Ministry of Machinery and Electronics Industry of the People's Republic of China Approval Department: Ministry of Construction of the People's Republic of China Implementation Date 1 July 1, 1993
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Notice on the Release of the National Standard
"Boiler Room Design Code"
Jianbiao [1992] No. 900
According to the requirements of the State Planning Commission's Document No. Jizong [1986] 250, the "Boiler Room Design Code" revised by the Ministry of Machinery and Electronics Industry and relevant departments has been reviewed by relevant departments. The "Boiler Room Design Code" GB50041-92 is now approved as a mandatory national standard and will be implemented from July 1, 1993. The original "Industrial Boiler Room Design Code" GBJ41-79 is abolished at the same time.
This code is managed by the Ministry of Machinery and Electronics Industry, and its specific interpretation and other work are the responsibility of the Second Design Institute of the Ministry of Machinery and Electronics Industry. The publication and distribution is organized by the Standard and Quota Research Institute of the Ministry of Construction.
Ministry of Construction of the People's Republic of China
November 25, 1992
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Revision Notes
This specification is edited by the Ministry of Machinery and Electronics Industry in accordance with the requirements of the State Planning Commission's Document No. 1986250, and is specifically revised by the Second Design Institute of the Ministry of Machinery and Electronics Industry in conjunction with relevant units to revise the original "Industrial Boiler Room Design Specification" GBJ41-79 and renamed it "Boiler Room Design Specification".
During the revision process, after studying the original specification content, the revision group carried out investigations, research and experiments in accordance with the superior's instructions to focus on energy conservation and environmental protection, and coordinated with relevant departments to widely solicit opinions from relevant units across the country. After the draft for soliciting opinions, the draft for review, and the draft for approval, the Ministry of Machinery and Electronics Industry will review and finalize the draft together with relevant departments. The revised specification is divided into 14 chapters and three appendices. The main contents of the revision are: 1. The scope of application of the specification has been expanded. The scope of application has been expanded from industrial boiler rooms to civil boiler rooms and regional boiler rooms, the evaporation capacity of a single steam boiler has been expanded from 1 to 35 t/h to 165 t/h, the working pressure of a steam boiler has been expanded from less than or equal to 2.5 MPa to 3.82 MPa, the steam temperature has been expanded from 400°C to 450°C, the water supply temperature of a hot water boiler has been expanded from less than or equal to 150°C to 180°C, and the medium parameters of outdoor steam pipes and condensate pipes and closed-loop hot water systems have also been expanded accordingly. This specification is also applicable to boiler rooms for cast iron boilers and boiler rooms for steam turbines. The fuel variety has also been expanded from only coal, heavy oil and natural gas to diesel and city gas.
2. The energy-saving and environmental protection content has been enriched.
3. The relevant provisions of the specification have been enriched and made as specific as possible. This specification must be used in conjunction with the current "Code for Fire Protection Design of Buildings", "Regulations on Safety Technical Supervision of Steam Boilers", "Regulations on Safety Technical Supervision of Hot Water Boilers", etc. In order to improve the quality of the specification, each unit should pay attention to accumulating information and summarizing experience in the process of implementing this specification. If you find any deficiencies or questions in the provisions, please send your opinions and relevant engineering construction standard full text information system
engineering construction standard full text information system
information to the National Standard Management Group of "Boiler Room Design Specification" of the Second Design Institute of the Ministry of Machinery and Electronics Industry (No. 84 Shiqiao Road, Hangzhou, Postal Code 310022) for reference in future revisions. Ministry of Machinery and Electronics Industry
May 1992
engineering construction standard full text information system
engineering construction standard full text information system
Chapter 1 General
Chapter 2
Chapter 3
Basic Provisions
Combustion Facilities·
Section 1
Coal-fired Facilities·
Section 2
Oil-fired Facilities
Section 3
Gas Facilities·
Chapter 4
Heating hot water preparation
Section 1
Section 2
Chapter 5
++++0+++
Hot water boiler and ancillary facilities
Hot water preparation facilities
Layout of boiler room
Section 1
Section 2
Section 3
Section 4
Chapter 6
Choice of location||t t||c0000500000000i0000500000500005050..
........
Layout of buildings, structures and sites…·Layout of boiler room, auxiliary room and living room 2..00000
.........
Process layout
Boiler ventilation, dust removal and noise control
Section 1
Section 2
Section Section 3
Chapter 7
Boiler ventilation
Noise prevention
Boiler water supply equipment and water treatment
Section 1
Boiler water supply equipment
Section 2 Water treatment
Chapter 8 Storage and transportation of fuel and ash
Section 1
Section 2
Storage and transportation of coal and ash·
Storage of fuel oil
Full text information system of engineering construction standards
. (18)
Engineering Construction Standards Full Text Information System
Chapter 9 Thermal Monitoring and Control
Section 1 Thermal Monitoring
Section 2 Thermal Control
Chapter 10 Testing and Maintenance Facilities
Section 1 Testing
Section 2 Inspection
Chapter 11 Steam and Water Pipelines
Chapter 12
Insulation and Anticorrosion
Section 1
Section 2||t t||Chapter 13
Civil Engineering, Electrical Engineering, Heating, Ventilation and Water Supply and Drainage Section 1
Section 2
Section 3
Section 4
Heating and Ventilation
Water Supply and Drainage
Outdoor Thermal Pipes
Chapter 14
Section 1
Section 2
Section 3
Heating Medium and Its Parameters
Design Flow Rate of Pipelines·| |tt||Pipeline system
Pipeline layout and laying·
Section 4
Section 5
Pipelines and accessories
Section 6 Pipeline thermal compensation and pipe supports
Appendix—Explanation of terms
Appendix 2 Clearance between outdoor thermal pipelines, trenches and buildings, structures, roads, railways and other pipelines…
Appendix 3
Explanation of terms used in this code
Additional explanation
Engineering Construction Standard Full Text Information System
(42)
(50)
Engineering Construction Standard Full Text Information System
Chapter 1 General
Article 1.0.1
This code is formulated to ensure that the boiler room design implements the relevant national policies and guidelines, complies with safety regulations, saves energy and protects the environment, and meets the requirements of safe production, advanced technology, economic rationality and quality assurance. Article 1.0.2 This specification applies to the design of industrial, civil and regional boiler rooms and outdoor thermal pipelines within the following scopes:
1. Boiler room with water-based steam boilers, whose rated evaporation capacity is 165t/h, rated outlet steam pressure is 0.1~3.82MPa gauge pressure, and rated outlet steam temperature is less than or equal to 450℃;
2. Boiler room with hot water boilers, whose rated output is 0.758MW, rated outlet water pressure is 0.1~2.5MPa gauge pressure, and rated outlet water temperature is less than or equal to 180℃;
3. Outdoor steam pipelines, condensate pipelines and closed-loop hot water systems that meet the parameters of the first and second paragraphs of this article.
Article 1.0.3 This specification does not apply to the design of boiler rooms and regional thermal pipelines for waste heat boilers and special types of boilers.
Article 1.0.Article 4 In addition to complying with this code, the design of boiler rooms shall also comply with the provisions of relevant current national standards and specifications.
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter II Basic Provisionsbzxz.net
Article 2.0.1 The design of boiler rooms shall obtain heat load, fuel and water quality data, and shall obtain relevant data such as meteorology, geology, hydrology, electricity and water supply. Article 2.0.2 The design of boiler rooms shall be carried out according to the overall planning of the city (region) or factory (unit), combining the near and far, focusing on the near future, and leaving room for expansion. For the expanded and rebuilt boiler rooms, the original buildings, structures, equipment and pipelines shall be reasonably utilized, and shall be coordinated with the original production system, equipment layout, buildings and structures. Article 2.0.3 The design of boiler rooms shall use coal as fuel, and the supply of coal shall be implemented. If heavy oil, diesel or natural gas, city gas is used as fuel, it shall be approved by the relevant competent authorities.
Article 2.0.4 Effective measures must be taken in the design of boiler rooms to reduce the impact of exhaust gas, waste water, waste residue and noise on the environment, and the harmful substances and noise discharged should comply with the provisions of relevant standards and specifications.
Pollution prevention and control projects should be designed at the same time as the main project. Article 2.0.5 The supply of heat load required by the factory (unit) should be determined according to the heating plan of the area where it is located. A boiler room should be set up only when its heat load cannot be supplied by the regional thermal power station, regional boiler room or boiler room of other units, and the conditions for heat and electricity co-production are not met.
Article 2.0.6 The supply of heat load required by the region should be determined according to the heating plan of the city (region) where it is located. A regional boiler room may be set up when one of the following conditions is met: 1. The heating and living heat load of residential areas and public building facilities does not fall within the scope of heating of the thermal power station; 2. The production, heating and ventilation and living heat load of users is small, the load is unstable, the annual use hours are low, or due to reasons such as site and funds, the conditions for heat and power co-production are not met; 3. Transitional heating is required according to the urban heating plan and the user's early heating requirements, and it can be used as a peak load or backup heat source for the thermal power station in the future. Article 2.0.7 The design capacity of the boiler room should be calculated and determined based on the heat load curve or heat balance system diagram, and the pipeline heat loss, boiler room self-use heat and available waste heat are taken into account. When there is no heat load curve or heat balance system diagram, the heat load can be determined based on the maximum hourly heat consumption of production, heating and ventilation and living, and the simultaneous use coefficient is taken into account respectively. Article 2.0.8 When the user's heat load changes greatly and frequently, or changes periodically, a steam accumulator should be installed under the principle of economic rationality. The design capacity of a boiler room equipped with a steam accumulator should be calculated and determined according to the balanced heat load. Article 2.0.9 The selection of boiler heating medium should be determined based on factors such as the heating method, the required amount of medium and the heating system. It can be selected according to the following provisions: 1. For boiler rooms that supply heat for heating and ventilation, hot water should be used as the heating medium; 2. For boiler rooms that supply steam for production, steam should be used as the heating medium; 3. For boiler rooms that supply steam for production, heating, ventilation and domestic heat at the same time, steam or steam and hot water can be selected as the heating medium after technical and economic comparison. Article 2.0.10 The selection of boiler heating parameters should be able to meet the user's heat parameters and reasonable heat requirements.
Article 2.0.11 In addition to complying with the provisions of Articles 2.0.9 and 2.0.10 of this Code, the selection of boilers shall also meet the following requirements: 1. They should be able to effectively burn the fuel used; 2. They should have high thermal efficiency and enable the output, number of boilers and other performance to meet the needs of changes in thermal load;
3. They should be conducive to environmental protection
4. They should keep infrastructure investment and operating management costs low; 5. Boilers with the same capacity and combustion equipment should be selected. When boilers of different capacities and types are selected, their capacities and types should not exceed two. Article 2.0.12 The number and capacity of boilers shall be determined based on the design capacity of the boiler room and the operating conditions of the boiler units during the low-peak period of the year, and ensure that when the largest boiler in the engineering construction standard full text information system
engineering construction standard full text information system
is under maintenance, the remaining boilers shall be able to meet the following requirements: 1. The minimum heat load required for continuous production heat; 2. The minimum heat load required for heating, ventilation and domestic heat. Article 2.0.13 The number of boilers in the boiler room should not be less than 2, but when one boiler can meet the heat load and maintenance needs, only one boiler can be set. The total number of boilers in the boiler room should not exceed 5 when newly built; and should not exceed 7 when expanded and rebuilt.
Article 2.0.14
Explosion-proof doors should be installed on the flues behind oil-fired, gas-fired and pulverized coal boilers. The location of the explosion-proof door should be conducive to pressure relief. When the explosive gas may endanger the safety of the operator, a pressure relief guide pipe should be installed on the explosion-proof door. Article 2.0.15 When the earthquake design intensity is 6 to 9 degrees, earthquake-resistant measures should be taken for the buildings and structures of the boiler room, as well as the selection of boilers and pipeline design. Article 2.0.16 The auxiliary equipment such as water treatment devices, deaerators and water supply pumps in the boiler room should be selected according to the process design requirements of the boiler room; the auxiliary machines and instruments such as blowers and induced draft fans of the boiler should meet the process design requirements. Article 2.0.17 The regional boiler room should be equipped with necessary repair, transportation and living facilities. When it can cooperate with the neighboring factories (units), it does not need to be set up separately. Article 2.0.18 The site of the boiler room area should be greened. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3
Combustion Facilities
Section 1 Coal-fired Facilities
Article 3.1.1 Coal for boilers should be the type of coal nearby. Article 3.1.2 The combustion equipment of the boiler should be adapted to the type of coal used and should meet the following requirements:
1. It should be able to adapt to load changes better;
2. It should be able to save energy better;
3. It should be conducive to environmental protection.
Article 3.1.3 When selecting layer-type (including chain-type coal thrower) combustion equipment, chain grates should be used.
Article 3.1.4
Use chain grates.
The combustion equipment of coal with strong coking property and coke shavings should not be used. Article 3.1.5 The selection of coal mill type should be determined according to the characteristics of the coal. When a fan coal mill or a hammer shaft coal mill is selected, a direct-blowing pulverizing system should be used. One coal mill should be available as a spare for each boiler. When a steel ball coal mill is selected, a storage silo type pulverizing system should be used. One coal mill should be installed for each boiler, and its calculated output should not be less than 115% of the coal consumption required for the rated evaporation capacity of the boiler.
The storage capacity of the pulverized coal bin should meet the coal consumption of Article 3.1.6
of the rated evaporation capacity of the boiler for 3 to 5 hours.
Article 3.1.7 The design of the raw coal bin, pulverized coal bin and coal drop pipe of the pulverizing system shall meet the following requirements:
1. The inner walls of the raw coal bin and pulverized coal bin should be smooth and wear-resistant, the wall inclination should not be less than 60°, and the intersection angle of adjacent walls should be arc-shaped; 2. A circular hyperbolic metal small coal hopper should be installed at the lower part of the raw coal bin outlet; Engineering Construction Standard Full Text Information SystemArticle 6 The supply of heat load required by the region shall be determined according to the heating plan of the city (region) where it is located. A regional boiler room may be set up when one of the following conditions is met: 1. The heating and living heat load of residential areas and public building facilities does not fall within the heating scope of the thermal power station; 2. The production, heating, ventilation and living heat load of users is small, the load is unstable, the annual usage hours are low, or due to reasons such as site and funds, the conditions for heat and power co-production are not met; 3. Transitional heating is required according to the urban heating plan and the user's early heating requirements, and it can be used as a peak load or backup heat source for the thermal power station in the future. Article 2.0.7 The design capacity of the boiler room should be calculated and determined based on the heat load curve or heat balance system diagram, and take into account the pipeline heat loss, the boiler room's own heat and the waste heat that can be used.
When there is no heat load curve or heat balance system diagram, the heat load can be determined based on the maximum hourly heat consumption of production, heating and ventilation, and living, and the simultaneous use coefficient is included respectively. Article 2.0.8 When the user's heat load changes greatly and frequently, or changes periodically, a steam accumulator should be installed under the principle of economic rationality. The design capacity of a boiler room equipped with a steam accumulator should be calculated and determined according to the balanced heat load. Article 2.0.9 The selection of boiler heating medium should be determined based on factors such as the heating method, the required amount of the medium, and the heating system. It can be selected according to the following provisions: 1. For boiler rooms that supply heat for heating and ventilation, hot water should be used as the heating medium; 2. For boiler rooms that supply steam for production, steam should be used as the heating medium; 3. For boiler rooms that supply steam for production, heating and ventilation, and living heat at the same time, steam or steam and hot water can be selected as the heating medium after technical and economic comparison. Article 2.0.10 The selection of boiler heating parameters should be able to meet the user's heat parameters and reasonable heat requirements.
Article 2.0.11 In addition to complying with the provisions of Articles 2.0.9 and 2.0.10 of this Code, the selection of boilers shall also meet the following requirements: 1. They should be able to effectively burn the fuel used; 2. They should have high thermal efficiency and enable the output, number of boilers and other performance to meet the needs of changes in thermal load;
3. They should be conducive to environmental protection
4. They should keep infrastructure investment and operating management costs low; 5. Boilers with the same capacity and combustion equipment should be selected. When boilers of different capacities and types are selected, their capacities and types should not exceed two. Article 2.0.12 The number and capacity of boilers shall be determined based on the design capacity of the boiler room and the operating conditions of the boiler units during the low-peak period of the year, and ensure that when the largest boiler in the engineering construction standard full text information system
engineering construction standard full text information system
is under maintenance, the remaining boilers shall be able to meet the following requirements: 1. The minimum heat load required for continuous production heat; 2. The minimum heat load required for heating, ventilation and domestic heat. Article 2.0.13 The number of boilers in the boiler room should not be less than 2, but when one boiler can meet the heat load and maintenance needs, only one boiler can be set. The total number of boilers in the boiler room should not exceed 5 when newly built; and should not exceed 7 when expanded and rebuilt.
Article 2.0.14
Explosion-proof doors should be installed on the flues behind oil-fired, gas-fired and pulverized coal boilers. The location of the explosion-proof door should be conducive to pressure relief. When the explosive gas may endanger the safety of the operator, a pressure relief guide pipe should be installed on the explosion-proof door. Article 2.0.15 When the earthquake design intensity is 6 to 9 degrees, earthquake-resistant measures should be taken for the buildings and structures of the boiler room, as well as the selection of boilers and pipeline design. Article 2.0.16 The auxiliary equipment such as water treatment devices, deaerators and water supply pumps in the boiler room should be selected according to the process design requirements of the boiler room; the auxiliary machines and instruments such as blowers and induced draft fans of the boiler should meet the process design requirements. Article 2.0.17 The regional boiler room should be equipped with necessary repair, transportation and living facilities. When it can cooperate with the neighboring factories (units), it does not need to be set up separately. Article 2.0.18 The site of the boiler room area should be greened. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3
Combustion Facilities
Section 1 Coal-fired Facilities
Article 3.1.1 Coal for boilers should be the type of coal nearby. Article 3.1.2 The combustion equipment of the boiler should be adapted to the type of coal used and should meet the following requirements:
1. It should be able to adapt to load changes better;
2. It should be able to save energy better;
3. It should be conducive to environmental protection.
Article 3.1.3 When selecting layer-type (including chain-type coal thrower) combustion equipment, chain grates should be used.
Article 3.1.4
Use chain grates.
The combustion equipment of coal with strong coking property and coke shavings should not be used. Article 3.1.5 The selection of coal mill type should be determined according to the characteristics of the coal. When a fan coal mill or a hammer shaft coal mill is selected, a direct-blowing pulverizing system should be used. One coal mill should be available as a spare for each boiler. When a steel ball coal mill is selected, a storage silo type pulverizing system should be used. One coal mill should be installed for each boiler, and its calculated output should not be less than 115% of the coal consumption required for the rated evaporation capacity of the boiler.
The storage capacity of the pulverized coal bin should meet the coal consumption of Article 3.1.6
of the rated evaporation capacity of the boiler for 3 to 5 hours.
Article 3.1.7 The design of the raw coal bin, pulverized coal bin and coal drop pipe of the pulverizing system shall meet the following requirements:
1. The inner walls of the raw coal bin and pulverized coal bin should be smooth and wear-resistant, the wall inclination should not be less than 60°, and the intersection angle of adjacent walls should be arc-shaped; 2. A circular hyperbolic metal small coal hopper should be installed at the lower part of the raw coal bin outlet; Engineering Construction Standard Full Text Information SystemArticle 6 The supply of heat load required by the region shall be determined according to the heating plan of the city (region) where it is located. A regional boiler room may be set up when one of the following conditions is met: 1. The heating and living heat load of residential areas and public building facilities does not fall within the heating scope of the thermal power station; 2. The production, heating, ventilation and living heat load of users is small, the load is unstable, the annual usage hours are low, or due to reasons such as site and funds, the conditions for heat and power co-production are not met; 3. Transitional heating is required according to the urban heating plan and the user's early heating requirements, and it can be used as a peak load or backup heat source for the thermal power station in the future. Article 2.0.7 The design capacity of the boiler room should be calculated and determined based on the heat load curve or heat balance system diagram, and take into account the pipeline heat loss, the boiler room's own heat and the waste heat that can be used.
When there is no heat load curve or heat balance system diagram, the heat load can be determined based on the maximum hourly heat consumption of production, heating and ventilation, and living, and the simultaneous use coefficient is included respectively. Article 2.0.8 When the user's heat load changes greatly and frequently, or changes periodically, a steam accumulator should be installed under the principle of economic rationality. The design capacity of a boiler room equipped with a steam accumulator should be calculated and determined according to the balanced heat load. Article 2.0.9 The selection of boiler heating medium should be determined based on factors such as the heating method, the required amount of the medium, and the heating system. It can be selected according to the following provisions: 1. For boiler rooms that supply heat for heating and ventilation, hot water should be used as the heating medium; 2. For boiler rooms that supply steam for production, steam should be used as the heating medium; 3. For boiler rooms that supply steam for production, heating and ventilation, and living heat at the same time, steam or steam and hot water can be selected as the heating medium after technical and economic comparison. Article 2.0.10 The selection of boiler heating parameters should be able to meet the user's heat parameters and reasonable heat requirements.
Article 2.0.11 In addition to complying with the provisions of Articles 2.0.9 and 2.0.10 of this Code, the selection of boilers shall also meet the following requirements: 1. They should be able to effectively burn the fuel used; 2. They should have high thermal efficiency and enable the output, number of boilers and other performance to meet the needs of changes in thermal load;
3. They should be conducive to environmental protection
4. They should keep infrastructure investment and operating management costs low; 5. Boilers with the same capacity and combustion equipment should be selected. When boilers of different capacities and types are selected, their capacities and types should not exceed two. Article 2.0.12 The number and capacity of boilers shall be determined based on the design capacity of the boiler room and the operating conditions of the boiler units during the low-peak period of the year, and ensure that when the largest boiler in the engineering construction standard full text information system
engineering construction standard full text information system
is under maintenance, the remaining boilers shall be able to meet the following requirements: 1. The minimum heat load required for continuous production heat; 2. The minimum heat load required for heating, ventilation and domestic heat. Article 2.0.13 The number of boilers in the boiler room should not be less than 2, but when one boiler can meet the heat load and maintenance needs, only one boiler can be set. The total number of boilers in the boiler room should not exceed 5 when newly built; and should not exceed 7 when expanded and rebuilt.
Article 2.0.14
Explosion-proof doors should be installed on the flues behind oil-fired, gas-fired and pulverized coal boilers. The location of the explosion-proof door should be conducive to pressure relief. When the explosive gas may endanger the safety of the operator, a pressure relief guide pipe should be installed on the explosion-proof door. Article 2.0.15 When the earthquake design intensity is 6 to 9 degrees, earthquake-resistant measures should be taken for the buildings and structures of the boiler room, as well as the selection of boilers and pipeline design. Article 2.0.16 The auxiliary equipment such as water treatment devices, deaerators and water supply pumps in the boiler room should be selected according to the process design requirements of the boiler room; the auxiliary machines and instruments such as blowers and induced draft fans of the boiler should meet the process design requirements. Article 2.0.17 The regional boiler room should be equipped with necessary repair, transportation and living facilities. When it can cooperate with the neighboring factories (units), it does not need to be set up separately. Article 2.0.18 The site of the boiler room area should be greened. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3
Combustion Facilities
Section 1 Coal-fired Facilities
Article 3.1.1 Coal for boilers should be the type of coal nearby. Article 3.1.2 The combustion equipment of the boiler should be adapted to the type of coal used and should meet the following requirements:
1. It should be able to adapt to load changes better;
2. It should be able to save energy better;
3. It should be conducive to environmental protection.
Article 3.1.3 When selecting layer-type (including chain-type coal thrower) combustion equipment, chain grates should be used.
Article 3.1.4
Use chain grates.
The combustion equipment of coal with strong coking property and coke shavings should not be used. Article 3.1.5 The selection of coal mill type should be determined according to the characteristics of the coal. When a fan coal mill or a hammer shaft coal mill is selected, a direct-blowing pulverizing system should be used. One coal mill should be available as a spare for each boiler. When a steel ball coal mill is selected, a storage silo type pulverizing system should be used. One coal mill should be installed for each boiler, and its calculated output should not be less than 115% of the coal consumption required for the rated evaporation capacity of the boiler.
The storage capacity of the pulverized coal bin should meet the coal consumption of Article 3.1.6
of the rated evaporation capacity of the boiler for 3 to 5 hours.
Article 3.1.7 The design of the raw coal bin, pulverized coal bin and coal drop pipe of the pulverizing system shall meet the following requirements:
1. The inner walls of the raw coal bin and pulverized coal bin should be smooth and wear-resistant, the wall inclination should not be less than 60°, and the intersection angle of adjacent walls should be arc-shaped; 2. A circular hyperbolic metal small coal hopper should be installed at the lower part of the raw coal bin outlet; Engineering Construction Standard Full Text Information SystemArticle 14
Explosion-proof doors shall be installed on the flues behind oil-fired, gas-fired and pulverized coal boilers. The location of the explosion-proof doors shall be conducive to pressure relief. When the explosive gas may endanger the safety of the operator, a pressure relief guide pipe shall be installed on the explosion-proof doors. Article 2.0.15 When the earthquake design intensity is 6 to 9 degrees, earthquake-resistant measures shall be taken for the buildings and structures of the boiler room, as well as the selection of boilers and pipeline design. Article 2.0.16 Auxiliary equipment such as water treatment devices, deaerators and water supply pumps in the boiler room shall be selected according to the process design requirements of the boiler room; auxiliary equipment and instruments such as blowers and induced draft fans of the boilers shall meet the process design requirements. Article 2.0.17 The regional boiler room should be equipped with necessary repair, transportation and living facilities. When it can cooperate with the neighboring factories (units), it is not necessary to set it up separately. Article 2.0.18 The site of the boiler room area should be greened. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3
Combustion Facilities
Section 1 Coal-fired Facilities
Article 3.1.1 Coal for boilers should be the type of coal nearby. Article 3.1.2 The combustion equipment of the boiler should be adapted to the type of coal used and should meet the following requirements:
1. It should be able to adapt to load changes better;
2. It should be able to save energy better;
3. It should be conducive to environmental protection.
Article 3.1.3 When selecting layer-type (including chain-type coal thrower) combustion equipment, chain grates should be used.
Article 3.1.4
Use chain grates.
The combustion equipment of coal with strong coking property and coke shavings should not be used. Article 3.1.5 The selection of coal mill type should be determined according to the characteristics of the coal. When a fan coal mill or a hammer shaft coal mill is selected, a direct-blowing pulverizing system should be used. One coal mill should be available as a spare for each boiler. When a steel ball coal mill is selected, a storage silo type pulverizing system should be used. One coal mill should be installed for each boiler, and its calculated output should not be less than 115% of the coal consumption required for the rated evaporation capacity of the boiler.
The storage capacity of the pulverized coal bin should meet the coal consumption of Article 3.1.6
of the rated evaporation capacity of the boiler for 3 to 5 hours.
Article 3.1.7 The design of the raw coal bin, pulverized coal bin and coal drop pipe of the pulverizing system shall meet the following requirements:
1. The inner walls of the raw coal bin and pulverized coal bin should be smooth and wear-resistant, the wall inclination should not be less than 60°, and the intersection angle of adjacent walls should be arc-shaped; 2. A circular hyperbolic metal small coal hopper should be installed at the lower part of the raw coal bin outlet; Engineering Construction Standard Full Text Information SystemArticle 14
Explosion-proof doors shall be installed on the flues behind oil-fired, gas-fired and pulverized coal boilers. The location of the explosion-proof doors shall be conducive to pressure relief. When the explosive gas may endanger the safety of the operator, a pressure relief guide pipe shall be installed on the explosion-proof doors. Article 2.0.15 When the earthquake design intensity is 6 to 9 degrees, earthquake-resistant measures shall be taken for the buildings and structures of the boiler room, as well as the selection of boilers and pipeline design. Article 2.0.16 Auxiliary equipment such as water treatment devices, deaerators and water supply pumps in the boiler room shall be selected according to the process design requirements of the boiler room; auxiliary equipment and instruments such as blowers and induced draft fans of the boilers shall meet the process design requirements. Article 2.0.17 The regional boiler room should be equipped with necessary repair, transportation and living facilities. When it can cooperate with the neighboring factories (units), it is not necessary to set it up separately. Article 2.0.18 The site of the boiler room area should be greened. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3
Combustion Facilities
Section 1 Coal-fired Facilities
Article 3.1.1 Coal for boilers should be the type of coal nearby. Article 3.1.2 The combustion equipment of the boiler should be adapted to the type of coal used and should meet the following requirements:
1. It should be able to adapt to load changes better;
2. It should be able to save energy better;
3. It should be conducive to environmental protection.
Article 3.1.3 When selecting layer-type (including chain-type coal thrower) combustion equipment, chain grates should be used.
Article 3.1.4
Use chain grates.
The combustion equipment of coal with strong coking property and coke shavings should not be used. Article 3.1.5 The selection of coal mill type should be determined according to the characteristics of the coal. When a fan coal mill or a hammer shaft coal mill is selected, a direct-blowing pulverizing system should be used. One coal mill should be available as a spare for each boiler. When a steel ball coal mill is selected, a storage silo type pulverizing system should be used. One coal mill should be installed for each boiler, and its calculated output should not be less than 115% of the coal consumption required for the rated evaporation capacity of the boiler.
The storage capacity of the pulverized coal bin should meet the coal consumption of Article 3.1.6
of the rated evaporation capacity of the boiler for 3 to 5 hours.
Article 3.1.7 The design of the raw coal bin, pulverized coal bin and coal drop pipe of the pulverizing system shall meet the following requirements:
1. The inner walls of the raw coal bin and pulverized coal bin should be smooth and wear-resistant, the wall inclination should not be less than 60°, and the intersection angle of adjacent walls should be arc-shaped; 2. A circular hyperbolic metal small coal hopper should be installed at the lower part of the raw coal bin outlet; Engineering Construction Standard Full Text Information System
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