响应面法优化Zn/AlMCM-41高温煤气脱硫剂原位氧化制备工艺  

Optimization of In-situ Oxidation Process of Zn/AlMCM-41 Sorbent for High Temperature Coal Gas Desulfurization by Response Surface Method

作　　者：李阳 刘潇 武海鹏 冯宇[2] 米杰[2] LI Yang;LIU Xiao;WU Hai-peng;FENG Yu;MI Jie(Department of Chemistry and Chemical Engineering,Jinzhong University,Jinzhong Shanxi 030619,China;State Key Laboratory of Clean and Efficient Coal Utilization,Taiyuan University of Technology,Taiyuan Shanxi 030024,China)

机构地区：[1]晋中学院化学化工系,山西晋中030619 [2]太原理工大学省部共建煤基能源清洁高效利用国家重点实验室,山西太原030024

出　　处：《当代化工》2023年第8期1793-1798,1804,共7页Contemporary Chemical Industry

基　　金：山西省高校科技创新项目,过渡金属改性硅基多级孔高温煤气脱硫剂及其性能研究(项目编号:2021L495)。

摘　　要：通过原位氧化的方式制备了具有锌基有序介孔结构的高温煤气脱硫剂,考察了制备过程中影响因素硅铝比、晶化pH和锌硅比对脱硫剂结构与性能的影响。利用响应面法建立了影响因素及其交互作用对硫容影响的三维曲面模型,并对制备条件进行了优化。结果表明:硅铝比、晶化pH和锌硅比对硫容具有显著影响,且影响由大到小顺序为锌硅比、晶化pH、硅铝比。通过模型预测了Zn/AlMCM-41脱硫剂的最佳制备工艺,为pH值9.93、硅铝比38.1∶1、锌硅比0.306∶1,在此条件下硫容为9.257%。通过实验验证该条件下的硫容真实值为9.197%,与预测值偏差为0.65%,验证了模型的可靠性。A zinc-based sorbent for high temperature coal gas desulfurization with ordered mesoporous structure was prepared by in-situ oxidation.The effect of the factors Si/Al ratio,crystalline pH and Zn/Si ratio in the preparation on the structure and performance of the sorbent were investigated.A 3D surface model of the factors and their interactions on the sulfur capacity was constructed using the response surface method,and the preparation conditions were optimized.The results showed that Si/Al ratio,crystalline pH and Zn/Si ratio had significant effect on sulfur capacity,and the order of influence from big to small was as follows:Zn/Si ratio,crystalline pH,Si/Al ratio.The model predicted optimal preparation conditions for the Zn/AlMCM-41 sorbent with 9.93 of pH value of,38.1∶1 of Si/Al ratio and 0.306∶1 of Zn/Si ratio,and sulfur capacity was 9.257% under these conditions.The actual value of the sulfur capacity under these conditions was 9.197% and the deviation from the predicted value was 0.65%,which validated the reliability of fitting model.

关 键 词：响应面法 原位氧化 脱硫 硫容 

分 类 号：TQ546.5[化学工程—煤化学工程]