Boiler pollutant emission standards
In order to implement the "Environmental Protection Law of the People's Republic of China" and the "Pollution Prevention and Control Law of the People's Republic of China" To control the emission of boiler pollutants and prevent and control pollution, the State Environmental Protection Administration has formulated the "Boiler Pollutant Emission Standards" and the standards will be implemented from 1 to 1. The full scope is as follows:
1 Scope
This standard specifies the maximum allowable emission concentration and smoke intensity of soot, sulfur oxides and nitrogen oxides in boiler flue by years. Emission limits.
This standard applies to emissions from coal-fired, oil-fired and fuel-fired boilers of various capacities and applications except pulverized coal power generation boilers and single power generation boilers with an output of 45.5MW (65t/h). Management of pollutants, as well as environmental impact assessment, design, completion acceptance and post-completion sewage management of construction projects.
Boilers that use fuel such as bagasse, sawdust, rice husk, tree wood, etc. shall be implemented with reference to the maximum allowable emission concentration of pollutants from coal-fired boilers in this standard.
2 Reference Standards
The following standards contain provisions that constitute provisions of this standard through citation in this standard.
GB3095-1996 Environmental Air Quality Standard
GB5468-9l Boiler Smoke Test Method
GB/T16l57-1996 Determination and Analysis of Particulate Matter Emitted from Stationary Pollution Sources State Pollutant Sampling Method
3 Definition
3.1 Standard State
The state of boiler smoke at a temperature of 273K and a pressure of 101325Pa, referred to as "Standard state". The emission concentrations specified in this standard refer to the values in smoke under standard conditions.
3.2 Initial emission concentration of smoke and dust
Refers to the smoke and dust emission concentration at the outlet of the boiler smoke or before entering the purification device.
3.3 Smoke and dust emission concentration
Refers to the smoke and dust emission concentration after the boiler smoke has been purified by the purification device. For boilers without purification devices, the initial smoke emission concentration is the boiler smoke emission concentration.
3.4 Natural ventilation of boiler Natural ventilation is a kind of ventilation that takes advantage of the pressure difference caused by the different temperatures inside and outside the chimney, sucks air into the furnace to participate in combustion, and discharges the combustion products to it. ?Mode. A boiler that adopts natural ventilation method without mechanical ventilation of induced draft fan is called a natural ventilation boiler.
3.5 As-received basis ash content
The measured ash content is based on the coal in the as-received state, also known as "resulting basis ash content", represented by "Aar".
3.6 Excess air space coefficient
The value of actual air consumption and theoretical air demand during fuel combustion, represented by "α".
4 Technical content
4.1 Classification of suitable areas
The first-class areas and first-class and third-class areas in this standard refer to GB3095-1996 "Environmental The classification area of the environmental air quality functional area specified in the "Air Quality Standard".
The "two control areas" in this standard refer to the acid control area and sulfur oxide pollution control area delineated in the "Reply of the State Council on Issues Concerning Acid Control Areas and Sulfur Oxide Pollution Control Areas" The extent of the pollution control area.
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