热煤气脱硫工艺基础特性研究

STUDY ON FUNDAMENTAL PROCESS PROPERTIES OF HOT GAS DESULFURIZATION

本文介绍了在加压流化床脱硫间歇试验装置上进行的热煤气脱硫工艺基础特性研究结果，利用美国ＵＣＩ公司制备的高温钛酸锌脱硫剂研究了反应温度、压力、气体速度等因素对煤气脱硫过程的影响；比较了不同再生介质以及不同再生条件下的脱硫剂再生行为；多循环试验验证了空气及纯氧直接再生的可行性；试验结果表明，当脱硫温度为５５０～６５０℃、进口煤气中Ｈ２Ｓ为０．５～１．５％时，脱硫出口气体中Ｈ２Ｓ为百万分之２０；低氧浓度气体可对高硫容量的脱硫剂进行再生，为获得高品质的再生尾气和提高再生速度，只要控制适当的硫容饱和度和采用相应的工艺参数，高氧浓度介质或纯氧直接再生是可行的。本研究工作为加压热煤气ＳＭＯＶＥＮ工艺开发研究的基础内容。

Fundamental process properties of hot gas desulfurization was studied in a bench scale fluidized bed test unit, using real coal gas from a pressurized fluidized bed gasifier A zinctitanate sorbent (prepared by UCI) was used to study the effect of temperature, pressure and gas velocity on the hot gas desulfurization Different regeneration agents were compared for sorbent regeneration The results of multicycle tests shows that air or oxygen could be directly used for regeneration of the sorbent The results are important for development of the hot gas desulfurization, process SMOVEN