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脱硝技术使用及优缺点
发布时间:2016-01-03

 


脱硝技能使用及优缺点

湿法脱硝技能的长处是脱硝功率毕较高。由于湿法脱硝技能的吸收剂种类较多,来源广泛,适应性强,能以硝酸盐等方式收回NOX,可到达综合利用的意图。
The advantages of denitration technology is high wet denitration efficiency bi. Because of the large, different absorbent of wet denitration technology extensive sources, strong adaptability, can with the nitrate form of recovery of NOX, can achieve the aim of comprehensive utilization.
使用SNCR脱硫脱硝:对水泥厂进行脱硝,要害的技能再于复原剂喷射在适宜的温度窗口,以及喷入的复原剂与烟气中NOX的充沛混合,然后完结较高的脱硝功率,下降复原剂的耗量和尾部氨的逃逸量。
The use of SNCR desulfurization and Denitrification: cement plant denitrification, the key technology in reducing agent injection in the temperature window is appropriate, and fully mixed reductant injection and NOX in flue gas denitration efficiency, so as to achieve higher, lower escape the amount of reducing agent consumption and tail ammonia.
尿素溶液的雾化请求:尿素溶液喷入到炉窑后,请求尿素与NOx有必要在很短的时间内完结反响,不然尿素就会流动到较低的温度区域显着下降尿素复原NOx的反响程度。为了使尿素与NOx 的反响在很短的时间内完结 ,有必要对尿素溶液进行杰出的雾化。对尿素溶液进行杰出的雾化,有必要挑选喷嘴的结构和喷嘴处的液体、气体压力和流量。喷嘴处的液体压力通常为0.4MPa,喷嘴处的气体压力通常为0.3MPa。
Spraying urea solution requirements: urea solution is sprayed into the furnace, urea and NOx requirements must be completed in a very short period of time, or urea will flow to the lower temperature region significantly reduce the extent of reaction of urea reduction of NOx. In order to make the urea and NOx reaction is completed in a very short period of time, must be good atomization of urea solution. Good atomization of the urea solution, must choose the liquid, gas pressure and flow rate and nozzle at. The fluid pressure at the nozzle is generally 0.4MPa, gas pressure at the nozzle is 0.3MPa.
喷嘴的结构和材质:脱硫脱硝喷嘴的质量是尿素增加设备的技能要害,喷嘴的结构设计应当首要确保使尿素溶液具有杰出的雾化作用,其次应思考喷嘴本身处于高温部位,应具有杰出的耐热功能,不易烧损。
The structure and material of the nozzle: the quality of desulfurization and denitration nozzle is the key technology of adding urea equipment, structure design of the nozzle should first ensure that the urea solution has good atomization effects, then we should think the nozzle itself in the high temperature parts, should have good heat resistance, not easy to burn.


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