Some standard content:
Industry Standard of the People's Republic of China
Technical Conditions for Hot Oil Furnaces
HG/T 20567—94
Editor: Industrial Furnace Design Technology Center of the Ministry of Chemical Industry Approved by: Ministry of Chemical Industry Implementation date: March 1995 Engineering Construction Standard Editing Center of the Ministry of Chemical Industry
1995 Beijing
Ministry of Chemical Industry Document
Hua Jian Fa (1994) No. 809
Notice on Issuing Two Chemical Industry Standards, namely, "Design Regulations for Chemical Rotary Kiln"
To all provinces, autonomous regions, municipalities directly under the Central Government, cities with independent planning status, Construction Commissions (Construction Departments), Chemical Industry Departments (Bureaus, Companies), and all relevant design units:
The two standards, namely, "Design Regulations for Chemical Rotary Kiln" and "Technical Conditions for Hot Oil Furnaces", formulated by the Industrial Furnace Design Technology Center of the Ministry of Chemical Industry, have been approved as recommended chemical industry standards after review, with the numbers HG/T20566-94 and HG/T20567-94 respectively. They will be implemented on March 1, 1995. The two standards are managed by the Industrial Furnace Design Technology Center of the Ministry of Chemical Industry and published by the Engineering Construction Standard Editing Center of the Ministry of Chemical Industry. Ministry of Chemical Industry
November 28, 1994
Combustion device:
Manufacture of furnace shell
Manufacture and assembly of steel structure
Furnace pipes·
Welding of hot oil furnaces
Masonry of hot oil furnaces·
Inspection and testing of hot oil furnaces
Marking, packaging, transportation
Preparation instructions
(4)
(7)
1 General
1.0.1 These technical conditions apply to the manufacture, assembly, testing and acceptance of hot oil furnaces. If the design has other special requirements for hot oil furnaces, the technical conditions required by other requirements should be put forward in the design documents.
1.0.2This technical condition is applicable to general vertical cylindrical tubular hot oil furnace and square box tubular hot oil furnace. The heated working medium is liquid phase heat transfer oil. 1.0.3This technical condition is applicable to the fuels of hot oil furnace: gas fuel, liquid fuel and solid fuel. It is not applicable to hot oil furnace heated by electricity and other energy sources. 1.0.4This technical condition is applicable to hot oil furnace with heating capacity of 232kW~0.6×10*kW (20×104～500×10*kcal/h), the use temperature of heat transfer oil is not more than 350C and the working pressure is not more than 1.6MPa.
1.0.5The manufacturer of hot oil furnace must be in accordance with the requirements of HG27004 "Safety Technical Regulations for Organic Heat Carrier Heating Furnaces" issued by the Ministry of Chemical Industry in 1993, and must be a manufacturer that has obtained a Class 1 pressure vessel manufacturing license, or a Class D steam boiler manufacturing license, and approved by the Ministry of Chemical Industry.
1.0.6 In addition to complying with these technical conditions, the manufacturer of the hot oil furnace must strictly manufacture and process in accordance with the design drawings and technical requirements. Any modification of the original design and substitution of materials by the manufacturer must be approved by the original design unit and certified documents must be obtained. Detailed records should be made for the modified parts.
1.0.7 Related standards and referenced standards
"Steam Boiler Safety Technical Supervision Regulations" issued by the Ministry of Labor and Personnel, Lao Ren Guo [19874]
"Boiler Pressure Vessel Nondestructive Testing Personnel Qualification Assessment Rules" issued by the Ministry of Labor and Personnel, Lao Ren Guo [198719]
HG27004 Safety Technical Regulations for Organic Heat Carrier Heating Furnaces" "Boiler Pressure Vessel Welder Examination Rules" issued by the State Administration of Labor W.bzs
GB3087 "Seamless Steel Pipes for Low and Medium Pressure Boilers" GB985 "Basic Types and Dimensions of Manual Arc Welding Joints" GB986 "Basic Types and Dimensions of Submerged Arc Welding Joints" GB3323 "Steel Fusion Welding Butt Joint Radiation Bottle Phase and Quality Classification" GB191 "Packaging, Storage and Transportation Indicator Marking Regulations" JB1611 "Boiler Tube Manufacturing Technical Conditions" JB3271 "Chain Grate Technical Conditions"
JB2536 "Pressure Vessel Painting, Packaging and Transportation" HG20543 "Chemical Industrial Furnace Research and Construction Technical Conditions" HG20544 "Chemical Industrial Furnace Structure Installation Technical Conditions" HG20545 "Chemical Industrial Furnace Pressure Component Manufacturing Technical Conditions" HGJ41 "Chemical Industrial Furnace Metal Material Design and Selection Regulations".bzsoe
2 Materials
The materials used to manufacture the hot oil furnace must have a material factory qualification certificate. 2.0.2 The materials selected for the pressure components of the hot oil furnace shall comply with HGJ41 "Chemical Industrial Furnace Metal Material Design and Selection Regulations". 2.0.3 The manufacturing materials of non-pressure-bearing components, furnace shell and steel structure of hot oil furnace shall be used in accordance with the design documents and the provisions of 2.0.1. 2.0.4 Cast iron parts cannot be used to make pressure-bearing components, but can be used as non-pressure-bearing supporting parts and furnace doors. The selected cast iron shall comply with the provisions of relevant national standards or ministerial standards. 2.0.5 All pressure-bearing components in contact with the working medium of hot oil furnace shall not be made of non-ferrous metal materials.
Combustion device
3.0.1 The manufacture of combustion devices for gas and liquid fuels shall comply with the requirements of design documents and drawings. After the burner is manufactured, it shall be tested in cold or hot state and capacity shall be tested at the same time. The measured capacity of the burner shall comply with the design capacity of the burner. 3.0.2 Solid fuel is generally coal. The requirements for coal-fired combustion devices are as follows: 3.0.2.1 According to the requirements of the design drawings, the hot oil furnace manufacturer shall use grates consistent with the requirements of the drawings, such as chain grates, reciprocating grates, etc. The grate shall meet the requirements of the grate technical conditions.
3.0.2.2 No matter what kind of grate is used, it shall be tested for operation and required to be safe and reliable and meet production requirements.
3.0.2.3 The combustion capacity of the grate shall be equal to or greater than the coal burning capacity requirements of the hot oil boiler.
The capacity of the coal loader and slag remover used with the grate shall be consistent with the grate capacity 3.0.2. 4
.
3.0.2.5 The slag remover and coal loader shall be tested for operation before leaving the factory, and required to operate safely and meet production requirements.
4 Furnace Shell Manufacturing
4.1 Furnace Shell Wall
4.1.1 The inner wall of the vertical cylindrical hot oil furnace shell is lined with refractory insulation materials. When the wall temperature is less than or equal to 80℃ and there is no pressure requirement, it is only used as the outer shell of a tight furnace. It is generally made of carbon steel plates less than or equal to 4mm6mm. 4.1.2 The outer wall of the square box hot oil furnace is lined with refractory lining and has a metal frame. When the wall temperature is less than or equal to 80℃, it is only used as the outer shell of a tight furnace. It is generally made of carbon steel plates less than or equal to 4mm. 4.1.3 The top and bottom plates of the cylindrical and square box hot oil furnaces are generally made of 6mm~8mm carbon steel plates. In order to increase the rigidity of the top and bottom plates, 6mm-8mm ribs can be welded on the top and bottom plates, or steel sections can be used to strengthen them to increase rigidity. 4.1.4, When the furnace shell plates are spliced, the length of the shortest section shall not be less than 300mm. 4.1.5, The longitudinal welds on the furnace shell shall be staggered, and the distance between the center lines of two adjacent welds shall be greater than or equal to 300mm.
4.1.6 The longitudinal welds of each section of the cylindrical furnace shall not exceed three, and the length of the outer arc between the center lines of each two longitudinal welds shall not be less than 300mm. 4.1.7 When the furnace shell is manufactured in sections (sheets), it is required to process the groove, and the inspection line for assembly shall be drawn 50mm away from the edge of the groove, and the marking must be clear. 4.1.8 If the segmented shell is connected by bolts, the flange surface shall be smooth, the flange shall not be bent or twisted, and the misalignment of the flange shall not affect the bolt connection. 4.2 Shell assembly requirements
The furnace shell assembly requirements shall be carried out in accordance with HG20544 "Technical Conditions for the Installation of Chemical Industrial Furnace Structures 5
".
4.2.2 The outer surface of the furnace shell shall not have obvious marks such as bumps, hammering, scratches, etc., and the outer surface shall be kept clean.
4.2.3 The flange surface shall be lowered to the main axis centerline of the pipe connection cylinder. The flatness or verticality of the flange surface of the installation pipe connection shall not exceed 1% of the outer diameter of the flange (when the outer diameter of the flange is less than 100mm, it shall be calculated as 100mm), and shall not exceed 3mm. 4.2.4. The distance deviation between the protruding surface of the flange and the outer side of the cylinder or the head is ±5mm. 4.2.5 The assembly dimensions of the angle steel flange of the top cover and the angle steel flange of the upper furnace body, and the angle steel flange of the upper furnace body and the lower furnace body shall comply with the provisions of Table 4.2.5. Furnace body angle steel flange assembly size
Flange bolt hole center circle diameter
Center distance between two adjacent bolt holes
Center distance between any two bolt holes
End surface flatness
Dimension tolerance
±2 (except for matching drill)
±2 (except for matching drill)
±3 (except for matching drill)
5D% or L% and ≤15
Note:) Dw represents the center circle diameter of the flange bolt hole. ②L represents the square nominal size.
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5 Steel structure manufacturing and assembly
5.0.1 The slag should be cleaned at the flame cutting place. The assembly bolt holes shall not be processed by gas cutting, but by drilling
5.0.2 The cut roughness requirement of the steel plate or steel section of the exposed part of the steel structure is 50. The edges and corners of the components are blunt.
5.0.3 The dimensional tolerance of the steel structure shall comply with the provisions of HG20544 "Technical Conditions for the Installation of Chemical Industrial Furnace Structures".
5.0.4 The processing of angle steel and fan steel flanges should be hot-simmered, and the dimensional deviation after processing shall comply with the provisions of HG20544 "Technical Conditions for the Installation of Chemical Industrial Furnace Structures". 5.0.5 The steel section is allowed to be extended by welding, and its welding joint type shall comply with the relevant requirements for the size of the steel section welding joint and the splicing requirements of HG20544 "Technical Conditions for the Installation of Chemical Industrial Furnace Structures". For some important beams and columns, if there are special requirements in the design, they should also meet the requirements of the drawings.
5.0.6 The height dimension tolerance Ah, unevenness Y and torsion angle Z of the main column shall meet the following requirements, as shown in Figure 5.0.6.
When H≤8000,
When H>8000,
Y≤H/1000,
Z≤H/1000,
and Y≤8;
earz≤10.
5.0.7 The length deviation AL, unevenness Y' and torsion angle Z' of the main beam shall meet the following requirements, as shown in Figure 5.0.7.
When L≤1000,
AL=. Www.bzxZ.net
1000
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