GWPB3-1999锅炉大气污染物排放标准

GWPB 3-1999 The Chinese version of standards has precedence to their English translations which are only for internal reference. 本英文版为内部资料，仅供参考，以中文版为准。

Emission Standard of Air Pollutants

For Coal-burning Oil-burning Gas-fired Boiler

锅炉大气污染物排放标准

Issued on 12/03/1999 Implemented as of 03/01/2000

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Issued by State Environmental Protection Bureau

Preface

This standard is developed for the purpose of implementing the Environmental Protection Law of the People’s Republic of China and the Air Pollution Prevention & Control Law of the PRC, controlling emission of pollutants from boilers and preventing and controlling air pollution.

This standard is a revision of GB13271-91, Emission Standard of Air Pollutants for Coal-burning Oil-burning Gas-fired Boiler.

The main amendment made in this standard includes: the applicable scope of the standard is further clarified, added with blackness of smoke dust and flue gas and maximum allowable emission concentration limit of sulfur dioxide for natural ventilation coal-burning boiler with a capacity<0.7MW (1t/h), and blackness of smoke dust and flue gas and maximum allowable emission concentration limit of sulfur dioxide and nitrogen oxide for oil-burning and gas-fired boiler.

⎯ GB13271-91 will be avoided as of the day when this standard goes into effect;

⎯ this standard is proposed by the Scientific & Technological Standard Department under the State Environmental Protection Bureau;

⎯ this standard was initially issued in September 1983 and revised for the first time in May 1992; and

⎯ State Environmental Protection Bureau is responsible for interpretation of this standard.

State Environmental Protection Standard

GWPB 3-1999

Replacing GB 13271-91

Emission Standard of Air Pollutants for Coal-burning Oil-burning Gas-fired Boiler

1 Scope

This standard specifies by years such emission limits for boilers as the maximum allowable emission concentration of smoke dust, sulfur dioxide and nitrogen oxide and the blackness of smoke dust.

This standard applies to management of air pollutant emission from coal-burning, oil-burning and gas-fired boilers with various capacities and for different purposes, except for the coal powder power generation boiler and any single unit of power generation boiler with an output greater than 45.5MW (65t/h), and to evaluation, design and completion acceptance of the environmental effect of the construction project and management of pollutant emission after completion of such project.

For any boiler using begasse, saw dust, rice husk or bark as its fuel, the maximum allowable emission concentration of air pollutants for coal-burning boiler in this standard shall be referred to.

2 Quoted standards

The articles included in the following standards form the articles of this standard by being quoted in this standard. GB 3095-1996 Environmental Air Quality Standard GB 5468-91 Boiler Smoke Dust Test Method GB/T 16157-1996 Method for Determination of Particles & Sampling of Gaseous

Pollutants in Exhaust Gas from Stationary Pollutant Source 3 Definition 3.1 Standard status

The status of boiler flue gas under the temperature of 273K and pressure of 101 325 Pa is called for short “standard status”. The emission concentrations specified in this standard mean the values for dry flue gas under the standard status. 3.2 Initial emission concentration of smoke dust

It means the emission concentration of smoke dust at the flue gas outlet of the boiler or before the inlet of the purification unit.

3.3 Emission concentration of smoke dust

It means the smoke dust emission concentration of boiler flue gas that has passed through the purification unit. For a boiler not installed with any purification unit, the initial emission concentration of smoke dust is just the emission concentration of boiler smoke dust. 3.4 Natural ventilation boiler

Natural ventilation is a ventilation method where the pressure difference caused by the difference between the internal and external temperatures of chimney is utilized to suck the air into the furnace for combustion and emit the combustion product into the air. A boiler using natural ventilation method instead of mechanical ventilation with FD and ID fans is called a natural ventilation boiler. 3.5 Ash content of arrival reference

The ash content determined using the coal in arrival state as the reference, which may also be

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GWPB 3-1999

called “ash content of application reference”, is represented with “Aar”. 3.6 Excess air coefficient

The ratio of actual air consumption during combustion of fuel to the theoretical air demand is represented with “D”. 4 Technical specifications 4.1 Classification of applicable areas

Class I, II and III areas mentioned in this standard mean the classified environmental air quality functional areas as defined in GB 3095-1996, Environmental Air Quality Standard. The “two control areas” mentioned in this standard means the range of acid rain control area and sulfur dioxide pollution control area as defined in the Response by the State Council to Questions Concerning Acid Rain Control Area & Sulfur Dioxide Pollution Control Area. 4.2 Division of time

This standard divide the time into two periods according to the years when the boilers are completed and put into service, for which different air pollutant emission standards shall be observed.

Period I: boilers completed and put into service before December 31, 2000; and

Period II: boilers completed and put into service as of January 1, 2001 (including boilers approved for building but not completed or put into service and those completed and put into service but required to be expanded or reformed).

4.3 The limit values of maximum allowable emission concentration of smoke dust and blackness of flue gas for boilers shall be as specified in Table 1 according to the time periods. Table 1 Limits of maximum allowable emission concentration of smoke dust and

blackness of flue gas

Boiler type

Natural ventilation

boiler [<0.7MW (1t/h)] Other boilers Light diesel, kerosene Other fuel oils

Applicable area Class I area Class II & III areas Class I area Class II area Class III area Class I area Class II & III areas Class I area Class II & III areas

All areas

Oil-burning boiler

Smoke dust emission concentration (mg/m2) Period I 100 150 100 250 350 80 100 100 200 50

Period II 80 120 80 200 250 80 100 80* 150 50

1 1 1 1 1

Blackness of flue gas (Ringelmen blackness, grade)

Coal-burning boiler

Gas-fired boiler

Note: * It is forbidden to build any new boiler using heavy oil or residual oil as fuel in Class I area.

4.4 The maximum allowable emission concentration of sulfur dioxide and nitrogen oxide for boilers shall be as specified in Table 2 according to the time periods.

GWPB 3-1999

Table 2 Maximum allowable emission concentration of sulfur dioxide &

nitrogen oxide for boilers

Boiler type Coal-burning boiler Oil-burning boiler

Light oil, kerosene Other fuel oil

Applicable area All areas All areas All areas All areas

SO2 emission concentration

(mg/m2) Period I 1200 700 1200 100

Period II 900 500 900* 100

NO2 emission concentration

(mg/m2) Period I / / / /

Period II

/ 400 400* 400

Gas-fired boiler

Note: * It is forbidden to build any new boiler using heavy oil or residual oil as fuel in Class I area.

4.5 The limit values of smoke dust initial emission concentration and flue gas blackness shall be as specified according to the time periods in Table 3, depending on the ex-factory time of the boiler.

Table 3 Limits of initial emission concentration of smoke dust and

blackness of flue gas for coal-burning boilers

Boiler type

Natural ventilation

boiler [<0.7MW (1t/h)] Other boilers [󰀀2.8MW (4t/h)] Other boilers [>2.8MW (4t/h)]

Boiling boiler

Circulating fluidized

bed boiler Other boiling boiler

Ash content of arrival coal reference (%)

Smoke dust initial emission concentration (mg/m2) Period I

Period II

Blackness of flue gas (Ringelmen blackness, grade)

/ 150 120 1 Aar󰀀25% Aar󰀀25%

1800 1600 2000 1800 1 1

Grate

firing boiler

Aar>25% 2000 1800 Aar>25% 2200 2000 / 15000 15000 1 / /

20000 5000

18000 5000

1

Spreader stoker boiler

4.6 Other specifications

4.6.1 Height of chimney for coal-burning and oil burning (except for burning light diesel and

kerosene) boiler building

4.6.1.1 Each newly built boiler building may only be installed with one chimney. The height of such chimney shall be as specified in Table 4 according to the total installed capacity of the boiler building.

Table 4 Minimum allowable height of chimney for coal-burning and oil-burning

(except for light diesel and kerosene burning) boiler building

Total installed capacity of boiler building

Min. allowable chimney height

MW <0.7 0.7~<1.41.4~<2.82.8~<7 7~<14 14~<28

t/h <1 1~<2 2~<4 4~<10 10~<20 20~󰀀40m 20 25 30 35 40 45 GWPB 3-1999

4.6.1.2 When the total installed capacity of the boiler is greater than 28MW (40t/h), the height of chimney shall be determined according to the requirements of the approved Environmental Effect Report (Table) and no less than 45m. In case there is any building within 200m radius of the chimney of the newly built boiler, the chimney shall be over 3m higher than the highest building.

4.6.2 Height of chimney for gas-fired, light-diesel-burning and kerosene-burning boilers

The height of chimney for gas-fired, light-diesel-burning and kerosene-burning boilers shall be determined according to the requirements of the approved Environmental Effect Report (Table) and no less than 8m.

4.6.3 If the height of chimney for any type of boiler fails to meet any specification under 4.6.1 or 4.6.2, 50% of the standard emission value for corresponding area and period shall be taken as the maximum allowable emission concentration of smoke dust, SO2 and NO2 from such boiler.

4.6.4 Chimneys for various types of boilers ƒ0.7MW (1t/h) shall be installed with permanent sampling and monitoring holes and related facilities according to GB 5468-91 and GB/T16157-1996. As of the day when this standard goes into effect, any boiler newly built and put into service (including those expanded and reformed) with single unit capacity ƒ14MW (20t/h) must be installed with a stationary instrument for continually monitoring the emission concentration of smoke dust and SO2 in the flue gas. 5 Monitoring

5.1 GB 5468 and GB/T 16157 shall be followed for the sampling method used for monitoring the emission concentration of smoke dust, sulfur dioxide and nitrogen oxide from the boiler. The regulations of State Environmental Protection Bureau shall be followed for the sulfur dioxide and nitrogen oxide analysis method. (Method for Monitoring & Analysis of Air and Waste Gas, published by China Environmental Science Press, shall be adopted temporarily until corresponding standard is issued by the state.)

5.2 The measured emission concentration of smoke dust, sulfur dioxide and nitrogen oxide for boiler shall be calculated with the air coefficient D as specified in Table 5.

Table 5 Values calculated with excess air coefficient for various types of boilers

Boiler Coal-burning coiler Oil-burning and gas-fired

boiler

Calculation items Smoke dust initial emission

concentration Emission concentration of smoke dust

& sulfur dioxide Emission concentration of smoke dust, sulfur dioxide & nitrogen oxide

Excess air coefficient

D = 1.7 D = 1.8 D = 1.2

6 Implementation of standard

6.1 For emission of sulfur dioxide from a boiler in the “two control areas”, the total amount control standard for such control area where the boiler is located shall also be observed in addition to this standard.

6.2 Implementation of this standard shall be supervised by the environmental protection authority under the people’s government above county level.

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