DEVELOPMENT OF SMOVEN PROCESS FOR HOT GAS DESULFURIZATION

The Beijing Research lnstitute of Coal Chemistry (BRICC) is developing the SMOVEN process for hot gas desulfurization. The SMOVEN process features sulfidation in an entrained bed,regeneration in a low velocity fluid bed or a moving bed with oxygen and sorbent circuIation con-trolled by gas stream. A series of tests on the bench scale unit and the continuous process devel-opment unit were carried out. The regenerable metal oxide sorbents were adopted for the sulfur-related components removing from coal gas at the temperature of 550-650℃. A fluidized bed gasifier of 100 mm (id) generated coal gas for tests. The principle of SMOVEN process has been positively verified.

热煤气脱硫工艺基础特性研究

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。

加压热煤气脱硫工艺

本文介绍了加压热煤气脱硫‘北京煤化-SMOVEN’工艺以及工艺研究试验的主要结果。热煤气脱硫小型连续试验装置投入稳定运行，取得了积极的结果，试验验证了SMOVEN工艺的技术合理性和操作可行性，为其工艺放大研究打下了良好基础。