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炼油厂合硫污水经汽提获得的粗氨经常规的氨精制工序达不到化工用氨的要求。昆山市精细化工研究所开发的ＫＣ－２型改性活性炭精脱硫剂和ＫＴ３１０型常温氧化锌脱硫剂和它们串联使用的工艺可将气态氨中硫化氢脱除至０．１μｇ／ｇ。介绍了精脱硫工艺的小试及工业应用结果，并讨论了某些工程问题。
Crude ammonia obtained from stripping of refinery co-sulfur wastewater by stripping can not meet the requirements for chemical ammonia by conventional ammonia refining processes. Kunshan Fine Chemical Research Institute developed KC-2 modified activated carbon fine desulfurizer and KT310 room temperature zinc oxide desulfurizer and their use in tandem process can remove hydrogen sulfide in gaseous ammonia to 0.1μg / g. Introduced the small desulfurization technology and industrial application results, and discussed some engineering problems.