This standard specifies the limitation of the air pollutants emission concentration, monitoring and control requirements of thermal power plant as well as the implementation and supervision of this standard, etc.
This standard is applicable to the emission management of the existing thermal power plant and the environmental impact assessment, environmental engineering design and completion environmental protection acceptance of the construction project of thermal power plant and the air pollutants emission management after being put into operation.
This standard is applicable to coal-fired power generation boiler with above 65t/h of unit set output except grate furnace and spreader feeder; Various volumes of coal-dust power generation boiler; fuel and gas power generation boiler with above 65t/h unit set output; thermal power plant with various volumes of gas turbine unit; power generation boiler adopted such fuels as gangue, biomass, oil shale, refinery coke when the unit set output is above 65t/h. The gas turbine unit powered cyclically by the integral coal gasification shall be executed the emission limits of gas turbine unit ignited by natural gas in this standard.
This standard is not applicable to the thermal power plants fired with domestic wastes and hazardous wastes.
This standard is applicable to the pollutant emission behavior allowed by the laws. The site selection of the pollution source set newly and the management of the current pollution source in the special protected zone shall be executed according to the relevant regulations in such laws and regulations and rules as "Law on Prevention of Air Pollution of the People's Republic of China", "Law of the People's Republic of China on Prevention and Control of Water Pollution", "Marine Environment Protection Law of the People's Republic of China", "Law of the People's Republic of China on Prevention of Environmental Pollution Caused by Solid Waste", "Law of Environmental Impact Assessment of the People's Republic of China".
2 Normative References
This standard quotes the following documents or provisions therein. For undated references, the latest edition of the normative document is applicable to this standard.
GB/T 16157 Methods for Article Measurement and Gaseous Pollutant Sampling of Stationary Pollution Source Emission
HJ/T 42 Measurement of Nitrogen Oxide in the Stationary Pollution Source Emission-Ultraviolet Spectrophotometry
HJ/T 43 Measurement of Nitrogen Oxide in the Stationary Pollution Source Emission-Ethylene Diamine Dihydrochloride Spectrophotometry
HJ/T 56 Determination of Sulphur Dioxide from Exhausted Gas of Stationary Source Iodine Titration Method
HJ/T 57 Determination of Sulphur Dioxide from Exhausted Gas of Stationary Source Fixed-potential Electrolysis method
HJ/T 75 Specifications for Continuous Emissions Monitoring of Flue Gas Emitted from Stationary Sources
HJ/T 76 Specification and Test Procedures for Continuous Emission Monitoring Systems of Flue Gas Emitted from Stationary Sources
HJ/T 373 Technical Specifications of Quality Assurance and Quality Control for Monitoring of Stationary Pollution Source (on Trial)
HJ/T 397 Technical Specifications for Emission Monitoring of Stationary Source
HJ/T 398 Stationary Source Emission-Determination of Blackness of Smoke Plumes-Ringelmann Smoke Chart
HJ 543 Measurement of the Exhaust Mercury of Stationary Source Cold Atomic Absorption Spectrophotometry (Provinsional)
HJ 629 Stationary Source Emission-Eetermination of Sulphur Dioxide-Non-dispersive Infrared Absorption Method
"Management Method on Automatic Supervisory-Control of Pollution Source" (No.28 order of the State Ministry of Environmental Protection)
"Environmental Monitoring Management Method" (No.39 order of State Environmental Protection Administration of the People's Republic of China)
3 Terms and Definitions
The following terms and definitions apply in this standard.
3.1 Thermal power plant
The power plant firing solid, liquid or gas fuels.
3.2 Standard condition
The state where the flue gas is 273K in temperature and 101325 Pa in pressure for short as "SC". For the purpose of this national standard, the emission concentration of the air pollutant refers to the value of dry flue gas under standard condition.
3.3 O2 content
The spare free oxygen contained in the flue gas when the fuel is burning expressed usually with dry basis volume percentage.3.4 Existing plant
The plants which has been constructed and put into operation or the environmental impact assessment document of which has been examined and approved before the implementation date of this standard.
3.5 New plant
The newly-built, expanded and rebuilt plants of which environmental impact assessment document has been examined and approved before the implementation date of this standard.
3.6 Arch fired furnace
It refers to the arch fired combustion space formed where the burner is placed in front and back arch crowns of the furnace, the fuel and air eject downwards and the combustion products discharge upwards from the middle of the front and back arches after they deflect 180°.
3.7 Key region
It refers to the regions, in accordance with the requirements of the environmental protection, where the land development density is higher and environment bearing capacity starts to be weaken or those where the atmospheric environment capacity is smaller, the ecological environment is vulnerable and the air pollutants discharge shall be controlled strictly as required by the serious incidental atmospheric environment pollutions.
3.8 Special limitation for air pollutants
It refers to the air pollutants limitation formulated and implemented in order to prevent and treat the regional atmosphere pollution, improve environmental quality, reduce further discharge strength of atmospheric pollution sources, control more strictly pollution discharge behaviors; this limitation's emission control level has reached the international advanced or leading degree and applicable to the key regions.
4 Pollutant Emission Control Requirements
4.1 Since July 1, 2014, existing plant executes emission limitation of smoke particle, sulfur dioxide, nitric oxide and flue gas blackness specified in Table 1.
4.2 Since January 1, 2012, existing plant executes limitation of smoke particle, sulfur dioxide, nitric oxide and flue gas blackness specified in Table 1.
4.3 Since January 1, 2015, combustion boiler executes limitation of mercury and its compound specified in Table 1.
