移动床活性焦烟气脱硫与除尘中试研究

Pilot-Plant Testing for Flue Gas Desulfurization and Dust Removal by Activated Coke

采用干法错流移动床活性焦烟气净化工艺，在烟气处理量1000m^3·h^-1的中试装置上进行了脱硫与除尘的连续试验．结果表明：装置操作简单，运行稳定；在烟气进口温度120℃、SO2浓度3232～6006mg·m^-3、粉尘浓度89．3～1599．7mg·m^-3、试验空速条件下，该装置可高效脱除烟气中的SO2和烟尘，净化后烟气含尘浓度低于50mg·m^-3，满足国家标准《火电厂大气污染物排放标准））（GB13223-2003）中有关烟尘最高允许排放浓度的最严格的规定．在本装置中，吸附饱和的活性焦采用加热再生，再生过程产生的解吸气中SO2体积分数高达40．1％，可有效回收硫资源具有良好的经济效益．

A developed flue gas desulfurization and dust removal process with a cross flow moving bed filled with activated coke （AC） was tested on a pilot scale with the gas treatment capacity of 1000 mg·h^-1. The results show that a easy-operating and stablerunning pilot scale testing equipment can be reached, and under the conditions of testing space velocity , the feed gas temperature of 120℃ , SO2 concentrations of 3 232-6 006mg·m^-3 and dust concentration of 89.3- 1 599.7 mg·m^-3 the high efficiency of flue gas desulfurization and dust removal is reached with the purity of dust less than 50 mg·m^-3 In the technology, the spent AC was regenerated by heating, and the SO2 concentration in the desorption gas is about 40.1%, which can be efficiently recovered as a sulfur resource. Favorable economy benefit can be reached by using the process.