With the continuous progress of China's industry, more and more exhaust gases are generated from the combustion of diesel fuel in boilers, mainly including SO2. NOX. soot, Ringmann blackness and other pollutants. If these pollutants are discharged into the atmosphere at will, they will have a very bad impact on the local ecological environment. In order to protect the integrity of China's ecological environment and the sustainable development of the environment and economy, boiler exhaust gas should be desulfurized. Biological desulfurization also came into being.
At present, flue gas desulfurization and denitration treatment technologies are diverse, including PAFP, ACFP, pyrolusite process, electron beam ammonia process, pulse corona process, gypsum wet process, catalytic oxidation process, microbial degradation process and other technologies, among which wet flue gas desulfurization and denitration are fast and common.
Common flue gas desulfurization methods include dry desulfurization and wet desulfurization. Dry desulfurization is to remove sulfur dioxide from flue gas by using catalyst and absorbent. Different catalysts and adsorbents also have different effects. The more widely used absorbent types are oxides and activated carbon. Although dry desulfurization is effective, it cannot be recovered and the absorption cost is high. High-efficiency liquid absorbent is used for wet desulfurization and dry desulfurization. Limestone and seawater desulfurization are the main operation methods of wet desulfurization. Therefore, most enterprises in China use wet desulfurization for relevant operations.
Wet flue gas desulfurization technology has many advantages: wet flue gas desulfurization technology is gas-liquid reaction, with fast reaction speed and high desulfurization efficiency, generally higher than 90%, mature technology and wide application. Wet desulfurization technology is relatively mature, safe and reliable in production and operation, and has always occupied a leading position in many desulfurization technologies.
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2023-02-20
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