| China is the biggest coal production and consumption country in the world.Coal occupies 75 percent of the total energy demand in our country. Sulfur, chlorin and nitric oxides which emitted from coal burning are the main air pollutants. Also coal burning contributes to formation of acid rain which damage of ecological environment and the Photochemical Smog which threaten human health. Large capacity utility boilers and numerous industry boilers are the main these gases emission source. Although significant amounts of research in Domestic and Overseas on desulfurization and dedusting had been carried out, the problem on the techniques still have not been solved thoroughly until now. The paper carried out the design and debugging of desulfurization and dedusting equipments combining engineer demand as well as the analysis of coal pyrolysis characteristics in order to get a deep coginition of coal combustion mechanism with the samples of Datong soft coal (DT), Yuanboshan wood coal (YB), Tiefa soft coal (TF). HCl, SO2 was main acidic gases. The gas clean mechanism was utilization of acid-base neutralization. The engineer experiment was performed on the reform and update of tail-gas treatment technology and equipment of boiler room located in Yilin Road, Nankai District, Tianjin. By test, tail-gas emission reached local emission standards, met theâ…¡prescribed requirements in DB12/151-2003 < The Standards of Boiler emissions> in Tianjin. After tail-gas treatment, the concentration of dust discharge was less than 50mg/m3; desulfurization efficiency was more than 90%; the concentration of sulfur dioxide emission was less than 200mg/m3.
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