GB 9078-1996 Industrial Furnace and Kiln Atmospheric Pollutant Emission Standards
In order to promptly and effectively control the atmospheric pollutant emissions of industrial furnaces and kilns, the 1996 Chinese Government issued the GB 9078-1996 Industrial Furnace and Kiln Atmospheric Pollutant Emission Standards. The standards are intended to control the emissions of sulfur dioxide, dust, nitrogen oxides, hydrocarbons, and other pollutants from industrial furnaces and kilns. This article will discuss the particular content of the GB 9078-1996 emission standards.
In general, the emission standards for sulfur dioxide are specified in milligrams per cubic meter (mg/m3). The emission standards for dust are specified in grams per cubic meter (g/m3). The emission standards for nitrogen oxides are also specified in milligrams per cubic meter (mg/m3). The emission standards for hydrocarbons are specified in milligrams per cubic meter (mg/m3).
The limits for sulfur dioxide depend on the type of the industrial furnace and kiln. For power generation in coal-fired boilers, the limit is 15 mg/m3. For sintering or calcium carbide furnaces, the limit is 20 mg/m3. For reverberatory furnaces and cupola furnaces, the limit is 30 mg/m3. For general industrial furnaces, the limit is 40 mg/m3.
Dust emissions are essentially the same for all types of industrial furnaces and kilns, with the limit being 10 g/m3. This limit is applicable to all emissions, including suspended particulate matter, scale, and any other dust particles.
The nitrogen oxide limits also depend upon the type of industrial furnace and kiln. For coal-fired boilers, the limit is 250 mg/m3. For sintering and calcium carbide furnaces, the limit is 500 mg/m3. For reverberatory and cupola furnaces, the limit is 1000 mg/m3. For general industrial furnaces, the limit is 1500 mg/m3.
The hydrocarbon emission limits are based on the type of fuel being used in the industrial furnace and kiln. For coal or oil, the limit is 42 mg/m3. For natural gas and coke oven gas, the limit is 8 mg/m3.
In addition to the above emission standards, the GB 9078-1996 standards also require that industrial furnaces and kilns employ sufficient emission control equipment and techniques to reduce their pollutant emissions. This may include the use of separators, filters, scrubbers, and catalysts.
In conclusion, the GB 9078-1996 Industrial Furnace and Kiln Atmospheric Pollutant Emission Standards are designed to reduce and control the atmospheric pollutant emissions from industrial furnaces and kilns. The standards set specific emission limits for sulfur dioxide, dust, nitrogen oxides, and hydrocarbons. They also require industrial furnaces and kilns to employ appropriate emission control equipment and techniques. By adhering to the emission limits and employing pollution control measures, industrial furnaces and kilns can significantly reduce the amount of pollutants released into the atmosphere.
