振动流化床中磷石膏分解耦合反应研究  

Study on reductive decomposition of phosphogypsum with energy coupling in vibro-fluidized bed

作　　者：郭文涛[1] 刘少文[1,2] 陈升[1] 贾辉[1] 吴元欣[1] 

机构地区：[1]武汉工程大学 化工与制药学院 绿色化工过程教育部重点实验室,湖北武汉430073 [2]黄冈师范学院化工学院,湖北黄冈438000

出　　处：《化工矿物与加工》2012年第8期3-5,13,共4页Industrial Minerals & Processing

基　　金：湖北省自然科学基金重点项目(2011CDA036)

摘　　要：在振动流化床中进行了磷石膏分解与焦炭燃烧反应耦合研究,考察了反应温度、碳硫摩尔比、床层高度和反应时间对磷石膏分解率、脱硫率以及产生气体SO2质量分数的影响。结果发现,在能量耦合条件下磷石膏的分解率、脱硫率和SO2质量分数都得到了显著的提高;当床层高度为200mm、碳硫摩尔比为0.8、空气流量为145mL/min和反应时间为1h时,磷石膏的分解率达到80.94%,脱硫率达到75.96%,SO2平均质量分数达到12.56%。Studies were conducted on decomposition of phosphogypsum with coke combustion reaction coupling in a vibrating fluidized bed,examining impacts of reaction temperature,carbon-sulfur molar ratio,bed height and reaction time on the decomposition rate of phosphogypsum,the desulfurization rate and the production of gas SO2 concentration.The results showed that under the conditions of energy coupling in the decomposition rate of phosphogypsum,the desulfurization rate and the SO2 mass fraction had been significantly improved.When the bed height was 200 mm,carbon and sulfur molar ration 0.8,air flow rate 145 mL/min,reaction time one hour,the decomposition ratio of phosphogypsum was 80.94%,the desulfurization rate 75.96% and the average mass fraction SO2 12.56%.

关 键 词：磷石膏 振动流化床 焦炭 能量耦合 

分 类 号：TQ172.4[化学工程—水泥工业]