化工学报Issue(11)：4586-4592,7.DOI:10.3969/j.issn.0438-1157.2014.11.053
（NH4）2S吸收净化冶炼烟气中SO2回收硫资源的方法
SO2 removal from simulated smelting gas with (NH4)2S and sulfur recycling
摘要
Abstract
SO2 in simulated smelting gas was absorbed by (NH4)2S solution, to obtain a mixed solution of (NH4)2S2O3 and NH4HSO3. After that the mixed solution was transferred into a special high pressure reaction kettle, and sulfur and ammonium sulfate were generated through the REDOX reaction under controlled conditions. The influence of SO2 absorption process condition and REDOX process condition were investigated. Under the condition of pH=3-7, SO2flow velocity of 300 ml·min-1, normal temperature, (NH4)2S solution concentration of 0.2-1.2 mol·L-1, absorption efficiency of SO2 reached more than 99.8% and H2S was not produced. Under the condition of pH=2.5-3.0, reaction temperature 130℃, sulfur recovery rate could reach more than 95% after one hour of reaction. Ammonium sulfate could be obtained through evaporation crystallization. Sulfur and ammonium sulfate generated during reaction were characterized by X-ray diffraction (XRD) and X-ray fluorescence (XRF). Purity of sulfur was 99.14% and percentage of nitrogen in ammoniumsulfate was 23.6%.关键词
硫化铵/吸收/二氧化硫/硫磺/硫酸铵Key words
ammonium sulfide/absorption/sulfur dioxide/sulfur/ammonium sulfate分类
资源环境引用本文复制引用
王郎郎,王学谦,宁平,施勇,马懿星,贾锐,王飞..（NH4）2S吸收净化冶炼烟气中SO2回收硫资源的方法[J].化工学报,2014,(11):4586-4592,7.基金项目
国家高技术研究发展计划项目 （）
国家自然科学基金项目 （）
云南省基础研究计划项目（2011FB027,2011FA010）。@@@@ supported by the National High Technology Research and Development Program of China (2012AA062504), the National Natural Science Foundation of China(U1137603,51268021,51368026) and the Basic Research Program Foundation of Yunnan Province (2011FB027,2011FA010) （2012AA062504）
