韩洁茹,常丽萍,王建成,韩丽娜,鲍卫仁
HAN Jie-ru1,CHANG Li-ping1,WANG Jian-cheng1,HAN Li-na2,BAO Wei-ren1(1.Key Laboratory of Coal Science and Technology

• 1:太原理工大学 煤科学与技术山西省和教育部重点实验室
• 2:太原理工大学材料科学与工程学院

摘要(Abstract)：

粗煤气的净化是制约煤气化技术应用的瓶颈之一,在煤气化过程中煤中的部分硫、氮和挥发性重金属会随着气化产物一起迁移进入气相中,而影响气体的进一步利用,必须对其进行高效脱除,特别是还原性煤基气体中单质汞的脱除。本文对目前已有的脱汞技术进行了概述,重点介绍载硫活性炭、金属氧化物及贵重金属负载型吸附剂等,并对煤气脱汞技术面临的挑战及发展方向进行了阐述。活性炭吸附法是目前研究最广泛的技术,但是成本较高,有效脱汞温度最高只能达到150℃;以氧化铁为代表的金属氧化物吸附剂在150℃下具有较高的脱硫脱汞能力;贵金属吸附剂在中温(200～350℃)脱汞方面有很大的潜力,且有一定的耐硫性。煤气脱汞与其它污染物(如硫、氯等)联合脱除被认为是具有较好应用前景的技术。
The cleaning technology for the raw gas is one of the key obstacles restraining the development of gasification technology.During the gasification process,parts of sulfur,nitrogen and volatile heavy metal in coal would transfer to gaseous phase together with the gasification products,which further affect the following usage of gas.Thus,it is necessary to remove the components effectively,especially the simple substance of mercury from the coal derived gas.Introduce the current technologies for Hg capture,and the active carbon supported sulfur,metal oxides and noble metal sorbents.Besides,the main challenges of Hg capture and its development direction are also analyzed.The adsorption of Hg with active carbon is well studied,however,its high cost and low working temperature(≤150 ℃) are the main defects.Below 150 ℃,the ferric oxide is a represent of metal oxides performing high desulfurization and Hg capture ability,simultaneously the noble sorbents has great potential for Hg removal between 200 ℃ and 350 ℃.Furthermore,it has a sulfur tolerance to some extent.The combination of removal of Hg and other pollutants(sulfur,chlorine,etc.) has good application prospect.

关键词(KeyWords)： 煤气;吸附剂;汞;硫化氢
fuel gas;sorbents;mercury;hydrogen sulfide

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(21006067,21276170);; 山西省自然科学基金资助项目(2010021008-1,2011021008-4);; 中国博士后面上项目(20110491630)

作者(Author): 韩洁茹,常丽萍,王建成,韩丽娜,鲍卫仁
HAN Jie-ru1,CHANG Li-ping1,WANG Jian-cheng1,HAN Li-na2,BAO Wei-ren1(1.Key Laboratory of Coal Science and Technology

DOI: 10.13226/j.issn.1006-6772.2013.02.007

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