Some standard content:
GB4915-1996
Foreword
This standard is formulated in accordance with the provisions of Article 7 of the "Atmospheric Pollution Prevention and Control Law of the People's Republic of China". This standard is revised based on the original "Cement Industry Pollutant Emission Standard" (GB4915-85). This standard stipulates the emission limits of air pollutants and the unorganized emission control limits of dust at each emission point of cement plants by year and region. This standard will be implemented from January 1, 1997. From the date of implementation, this standard will also replace GB4915-85≤Cement Industry Pollutant Emission Standard. This standard is proposed by the Science and Technology Standards Department of the National Environmental Protection Administration. This standard is interpreted by the National Environmental Protection Administration. 1 Scope
National Standard of the People's Republic of China
Emission standard of air pollutants for cement plants
Emission standard of air pollutants for cement plantGB4915—1996
Replaces GB4915—85|| tt||This standard stipulates the emission limits of air pollutants and the unorganized emission control limits of dust at each emission point of cement plants by year and region.
This standard applies to the emission management of cement plants, as well as the environmental impact assessment, design, completion acceptance and post-completion emission management of construction projects.
Mining mining and on-site crushing in the cement industry comply with GB16297-1996 "Comprehensive Emission Standard of Air Pollutants". 2 Referenced standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. GB3095--1996 Ambient Air Quality Standard GB9137-88 Maximum Allowable Concentration of Air Pollutants for Crop Protection GB/T16157-1996 Method for Determination of Particulate Matter and Sampling of Gaseous Pollutants in Exhaust from Stationary Pollution Sources 3 Definitions
This standard adopts the following definitions :
3.1 Standard state dry exhaust
Standard state dry exhaust refers to the exhaust without moisture when the hysteresis is 273K and the pressure is 101325Pa. The emission concentration recommended in this standard refers to Concentration in standard state dry exhaust gas.
3.2 Rotary Density
The rotary density is a rotary horizontal cylindrical cement clinker burning equipment. It includes wet kilns (including wet kilns with slurry filters), dry kilns (including dry kilns with waste heat boilers), Lipoll kilns (including primary and secondary passes), dry suspension preheating dense, precalciner kilns and various new cement firing kiln systems.
3.3 Vertical kiln
The vertical kiln is a stationary vertical cylindrical clinker burning equipment. It includes mechanical vertical kiln and ordinary vertical kiln. 3.4 Dryer, drying mill, coal mill and cooler. Dryer refers to various types of material drying equipment: drying mill refers to material drying and grinding equipment; coal mill refers to various types of pulverized coal preparation equipment; cooling Machine refers to various types (cylinder type, type, etc.) of cooling clinker equipment. 3.5 Crusher, mill, packaging machine and other ventilation production equipment Crusher refers to various crushing block granular material equipment; Mill refers to various material grinding equipment systems (excluding drying mill and coal mill): Packaging machine refers to various Types of packaging cement equipment (including cement bulk silos); other ventilation production equipment refers to production equipment that requires ventilation other than the above-mentioned main production equipment, including material conveying equipment and various types of storage warehouses. 3.6 Unorganized Dust Emission
National Environmental Protection Bureau approved on 1996-03-07 and implemented on 1997-01-01
GB4915-1996
Unorganized dust emission refers to the stacking of materials in the cement plant area Dust, material conveying and dust leakage from equipment such as kiln mills, etc. 4 Technical content
4.1 Standard classification
, second-level and third-level standards respectively correspond to the ambient air quality functional areas of GB3095: the first,
-category areas specified in this standard are implemented Class I standards;
Class II areas implement Class II standards;
Class III areas implement Class III standards.
4.2 Standard value
This standard stipulates the emission limits of air pollutants and the control limits of unorganized dust emissions at each emission point of cement plants according to age and regional category. According to the approval date of the environmental impact report (table) of the cement plant under construction, the standards to be implemented shall be determined in accordance with Articles 4.2.1, 4.2.2 and 4.2.3 respectively; for cement plants constructed without the approval of the environmental protection administrative department, the standards to be implemented shall be determined in accordance with The approval date of the supplementary environmental impact report (form) determines the standards that should be implemented.
4.2.1 For cement plants constructed before August 1, 1985, the maximum allowable emission concentration of smoke or dust and the emission per ton of product shall be in accordance with Table 1 and Table 2.
Table 1 Production equipment smoke or dust emission limit level one
Production equipment name
Rotary density
Vertical curtain
Dryer, drying Mill,
coal mill and cooling machine (single
unit)
crusher, mill, package
installation and other ventilation
production equipment ( Single unit)
level
emission concentration
mg/m
150
150
150
100|| tt||Dust in the air 20m outside the factory boundary
Maximum allowable concentration 1\, mg/m
1) Deduction of reference value
Emission per ton of product
kg /t
0.8
0.6
0.8
0.07
Exhaust concentration
mg/m
400|| tt||400
250
150
Level 2
Tons of product emissions
kg/t
2.1||tt| |1,6
1.3
0.10
Table 2 Cement plant dust unorganized emission limits
Level
1.0
Level 3
2.0
Emission concentration
mg/m
600
600
400
200
Level 3bzxZ.net
ton product emissions
kg/t
3.2
2.4
2.1
0.14
= level
4. 0
4.2.2 For cement plants constructed between August 1, 1985 and December 31, 1996, the maximum allowable emission concentration of smoke or dust and the emission amount per ton of product shall be as shown in the table 3. Table 4 is executed. Emissions are prohibited in Class I areas in GB3095. Table 3 Production equipment smoke or dust emission limit level
Name of production equipment
Rotary honey
Standing honey
Dryer, drying mill, coal mill and cooling Machine (single unit)
Crushers, mills, packaging machines and other ventilation production equipment (single unit)
Emission concentration
mg/m3
150|| tt||150
150
100
ton product emissions
kg/t
0.6
0.6
0.6
0.07
Emission concentration
mg/m
300
400
250
150||tt| |Level 3
Tons of product emissions
kg/t
1. 2
1.6
1.0
0.10||tt| |Level
Dust in the air 20m away from the factory boundary
Maximum allowable concentration\mg/m
1) Deduction of reference value
GB4915--1996||tt ||Table 4 Cement plant dust unorganized emission limits
level
1. 5
three
level
3.0
1997 For cement plants constructed from January 1, 2019, the maximum allowable emission concentration of smoke, dust and harmful gases and the emission per ton of product are 4.2.3
should be implemented according to Table 5 and Table 6. Emissions are prohibited in Class I areas in GB3095. Table 5 Production Equipment Atmospheric Pollutant Emission Limits Smoke or Dust
Production Equipment Name
Rotary Density
Limited Density
Dryers, drying||tt| |Grinding, coal grinding and cooling
Machine (single unit)
Crushers, mills,
Packing machines and others
Ventilation production equipment
(Single unit)
Level
Level 2
Level 3
Level 2
Blue level
Level 2
Level 3
Level 2
Blue level
Sulfur dioxide
Nitrogen oxide 1
Fluoride 2)
(calculated as NO)
(based on total fluorine)
Emission concentration ton product emission emission concentration ton product emission emission concentration ton product emission emission concentration ton product emission mg/m
100
150
100
150
100
150
50
100
kg/t
0.30
0.45
0.30
0.45
0,30
0.45
0.04
0.07
mg/m3
400
800
300
600
kg/t
1.20||tt| |2.40
0.90
1.80
mg/m
800
1600
200
400||tt| |kg/t
2.40
4.80
0.60
1.20
mg/m
10
20|| tt||50
100
1) Nitrogen oxides are measured as NO. This NO emission limit refers to the emission concentration and emission per ton of product when the O content in the flue gas is 10%. kg/t
0.03
0.06
0.15
0.30
2) Cement plants with sensitive crops around them have strict fluoride emission limits. Implemented one by one, the sensitive crops here refer to the "sensitive crops" relative to fluoride specified in the "Maximum Allowable Concentration of Air Pollutants for Crop Protection 3 (GB9137-88)" Table 6 Unorganized Emission Limits of Dust from Cement Plants ||tt ||Class
Speciality
In the air 20m outside the factory boundary
Maximum allowable concentration of dust\, mg/m
1) Deduction of reference value
4.3 Other regulations
Level III
Level
1.0
Level Three
1.5
4.3.1 Newly built, expanded or renovated cement production lines, The height of the smoke window (exhaust stack) should comply with the requirements in Table 7. The height of multiple side-by-side smoke windows (exhaust louvers), in addition to complying with the requirements in Table 7, should also be determined through environmental impact assessment. Production equipment
Equipment name
Single machine production capacity
t/d
Minimum allowable height
m
240||tt| |30
Table 7
GB4915--1996
The minimum allowable height of the smoke window (exhaust stack) of new equipment
>240
~ 700
45
>700
～1200
60
>1200
80
Production Equipment Name Crusher , mills, packaging machines and other ventilation production equipment vertical cellars
>120
>240
～240
30
The minimum allowable height is for new construction, The height of the exhaust pipe of expansion and reconstruction equipment should be 3m35
500
20
Hongyu machine, drying mill
coal mill and cooling machine||tt ||>500
~1000
25
>1000
30
4.3.2 The dust collection device of ventilation equipment should operate synchronously with its host equipment: The operation rate of the dust collection device of thermal equipment shall not be less than 97% relative to its host equipment.
4.3.3 Permanent sampling holes and sampling test platforms should be installed in the flue or exhaust pipe of new equipment. 5 Monitoring
5.1 Monitoring shall be carried out in accordance with the provisions of GB/T16157, and the analysis method of gaseous pollutants shall comply with the method standards formulated by the National Environmental Protection Administration. 5.2 Monitoring of unorganized dust emissions requires simultaneous sampling in the upwind and downwind directions 20m outside the factory boundary (no obvious factory boundary, 20m outside the workshop), and the monitoring data in the upwind direction are used as reference values. 5.3 Requirements for monitoring working conditions
5.3.1 For daily supervisory monitoring of cement plants, the working conditions during the sampling period should be the same as the normal operating conditions at that time. Neither the factory nor the monitoring personnel are allowed to arbitrarily change the normal operating conditions at that time. 5.3.2 The completion acceptance monitoring of the cement plant should be carried out when the equipment is in normal production condition and reaches more than 80% of the design scale. 6 Standard Implementation
6.1 The environmental protection administrative departments of the people's governments at or above the county level are responsible for the supervision and implementation of this standard. 6.2 For cement plants located in acid rain control areas and sulfur dioxide pollution control areas approved by the State Council, in addition to complying with this standard, sulfur dioxide emissions should also comply with the total amount control standards stipulated in the control area where they are located.1 The height of the smoke window (exhaust stack) of a newly built, expanded or renovated cement production line should comply with the regulations in Table 7. The height of multiple side-by-side smoke windows (exhaust louvers), in addition to complying with the requirements in Table 7, should also be determined through environmental impact assessment. Production equipment
Equipment name
Single machine production capacity
t/d
Minimum allowable height
m
240||tt| |30
Table 7
GB4915--1996
The minimum allowable height of the smoke window (exhaust stack) of new equipment
>240
~ 700
45
>700
～1200
60
>1200
80
Production Equipment Name Crusher , mills, packaging machines and other ventilation production equipment vertical cellars
>120
>240
~240
30
The minimum allowable height is for new construction, The height of the exhaust pipe of expansion and reconstruction equipment should be 3m35
500
20
Hongyu machine, drying mill
coal mill and cooling machine||tt ||>500
~1000
25
>1000
30
4.3.2 The dust collection device of ventilation equipment should operate synchronously with its host equipment: The operation rate of the dust collection device of thermal equipment shall not be less than 97% relative to its host equipment.
4.3.3 Permanent sampling holes and sampling test platforms should be installed in the flue or exhaust pipe of new equipment. 5 Monitoring
5.1 Monitoring shall be carried out in accordance with the provisions of GB/T16157, and the analysis method of gaseous pollutants shall comply with the method standards formulated by the National Environmental Protection Administration. 5.2 Monitoring of unorganized dust emissions requires simultaneous sampling in the upwind and downwind directions 20m outside the factory boundary (no obvious factory boundary, 20m outside the workshop), and the monitoring data in the upwind direction are used as reference values. 5.3 Requirements for monitoring working conditions
5.3.1 For daily supervisory monitoring of cement plants, the working conditions during the sampling period should be the same as the normal operating conditions at that time. Neither the manufacturer nor the monitoring personnel are allowed to arbitrarily change the normal operating conditions at that time. 5.3.2 The completion acceptance monitoring of the cement plant should be carried out when the equipment is in normal production condition and reaches more than 80% of the design scale. 6 Standard Implementation
6.1 The environmental protection administrative departments of the people's governments at or above the county level are responsible for the supervision and implementation of this standard. 6.2 For cement plants located in acid rain control areas and sulfur dioxide pollution control areas approved by the State Council, in addition to complying with this standard, sulfur dioxide emissions should also comply with the total control standards stipulated in the control areas where they are located.1 The height of the smoke window (exhaust stack) of a newly built, expanded or renovated cement production line should comply with the regulations in Table 7. The height of multiple side-by-side smoke windows (exhaust louvers), in addition to complying with the requirements in Table 7, should also be determined through environmental impact assessment. Production equipment
Equipment name
Single machine production capacity
t/d
Minimum allowable height
m
240||tt| |30
Table 7
GB4915--1996
The minimum allowable height of the smoke window (exhaust stack) of new equipment
>240
~ 700
45
>700
～1200
60
>1200
80
Production Equipment Name Crusher , mills, packaging machines and other ventilation production equipment vertical cellars
>120
>240
~240
30
The minimum allowable height is for new construction, The height of the exhaust pipe of expansion and reconstruction equipment should be 3m35
500
20
Hongyu machine, drying mill
coal mill and cooling machine||tt ||>500
~1000
25
>1000
30
4.3.2 The dust collection device of ventilation equipment should operate synchronously with its host equipment: The operation rate of the dust collection device of thermal equipment shall not be less than 97% relative to its host equipment.
4.3.3 Permanent sampling holes and sampling test platforms should be installed in the flue or exhaust pipe of new equipment. 5 Monitoring
5.1 Monitoring shall be carried out in accordance with the provisions of GB/T16157, and the analysis method of gaseous pollutants shall comply with the method standards formulated by the National Environmental Protection Administration. 5.2 Monitoring of unorganized dust emissions requires simultaneous sampling in the upwind and downwind directions 20m outside the factory boundary (no obvious factory boundary, 20m outside the workshop), and the monitoring data in the upwind direction are used as reference values. 5.3 Requirements for monitoring working conditions
5.3.1 For daily supervisory monitoring of cement plants, the working conditions during the sampling period should be the same as the normal operating conditions at that time. Neither the manufacturer nor the monitoring personnel are allowed to arbitrarily change the normal operating conditions at that time. 5.3.2 The completion acceptance monitoring of the cement plant should be carried out when the equipment is in normal production condition and reaches more than 80% of the design scale. 6 Standard Implementation
6.1 The environmental protection administrative departments of the people's governments at or above the county level are responsible for the supervision and implementation of this standard. 6.2 For cement plants located in acid rain control areas and sulfur dioxide pollution control areas approved by the State Council, in addition to complying with this standard, sulfur dioxide emissions should also comply with the total control standards stipulated in the control areas where they are located.
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