撞击流反应器脱除硫酸尾气中SO_2的工业应用  

Application in industry of the removal of SO_2 from the sulfuric acid tail gas in impinging stream gas-liquid reactor

作　　者：赵蕾[1] 周丹 周玉新[1] ZHAO Lei ZHOU Dan ZHOU Yu-xin(Key laboratory for Green Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, Hubei Province, China WuHan Engineering Co. ,Ltd. , Wuhan 430000, Hubei Province, China)

机构地区：[1]武汉工程大学化工与制药学院绿色化工过程省部共建教育部重点实验室,湖北武汉430073 [2]中国五环工程有限公司,湖北武汉430000

出　　处：《化学工程》2017年第4期15-17,44,共4页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(21076165)

摘　　要：介绍了新颖的撞击流气-液反应器吸收装置的基本结构参数和工艺流程,及在撞击流气-液反应器中采用钠-钙双碱法脱除硫酸尾气中SO_2工艺的工业应用。在撞击流气-液反应器导气管内气速(即撞击速度)为15—18 m/s的条件下,测定了液气比、脱硫介质浓度对脱硫效率的影响及脱硫系统阻力。由结果可知,相对传统脱硫装置,撞击流反应器脱除硫酸尾气中SO_2的工艺具有如下特点:系统阻力小、能耗低、设备投资小,脱硫效率高、运行稳定、操作弹性较大。在液气比为0.3—0.4 L/m^3,吸收液质量分数为1%—2%的条件下,脱除SO_2质量浓度为1 500—2 000 mg/m^3的硫酸尾气,其脱硫效率≥96.0%,SO_2排放质量浓度≤100 mg/m^3。The basic structure parameters and technological process of the novel impinging stream gas-liquid absorption mechanism, and its industrial application of sodium-calcium double alkali method in impinging stream gas-liquid reactor were introduced. Under the condition of that the gas velocity（ the impact speed） was about 15-18 m/s in the airway of the impinging stream gas-liquid reactor, the influence of liquid-gas ratio and absorbing liquid concentration on the desulfurization efficiency, and the system resistance of desulfurization were determined. The results showed that, compared with the traditional desulfurization equipments, the impinging stream reactor had following characteristics in the process of removing SO2 from sulfuric acid tail gas： low resistance, low energy consumption, low equipment investment, high efficiency, stable operation and flexible operation. When the liquidgas ratio was 0.3-0.4 L/m3 , the absorbing liquid concentration was 1% -2% and the SO2 mass concentration in sulfuric acid tail gas was 1 500-2 000 mg/m3, the desulfurization rate was above 96.0% and the SO2 mass concentration of the tail gas was below 100 mg/m3.

关 键 词：撞击流气-液反应器 双碱法 硫酸尾气 二氧化硫 

分 类 号：X781.3[环境科学与工程—环境工程] TQ052.5[化学工程]