煤气净化中制冷方式选择的探讨  

DISCUSSION ON SELECTION OF REFRIGERATION METHODS IN COAL GAS PURIFICATION

作　　者：黄帅[1] 

机构地区：[1]天华化工机械及自动化研究设计院有限公司,兰州730060

出　　处：《石油化工设计》2018年第1期12-15,共4页Petrochemical Design

摘　　要：介绍了在煤化工项目低温甲醇洗装置粗合成气净化工艺中,为了利用富余低压蒸汽,通常选用以氨为制冷介质的混合制冷方式,但其缺点是流程长、操作复杂、投资高等。通过对已实际实施的丙烯制冷与同等规模下的混合制冷在流程、设备、占地、投资、运行费用、介质危险性等方面进行了综合比较和选择分析,结果表明丙烯制冷方式具有较大的优势,建议今后新建的低温甲醇洗装置选用丙烯制冷的方式。In order to utilize the surplus low pressure steam in crude synthesis gas purification process of low temperature methanol washing unit in coal chemical projects, hybrid refrigeration system using ammonia as the refrigerant medium is usually selected,but it has disadvantages of long process flow,complex operation and high investment. Through comprehensive comparison and selection analysis on hybrid refrigeration and propylene refrigeration of equal scale in the aspects of process, equipment, floor area, investment,operation cost and medium risk, this paper concludes that propylene refrigeration is superior,and suggests that propylene refrigeration should be the first choice for grassroots lowtemperature methanol washing unit in the future.

关 键 词：制冷方式 投资 费用 能耗 比较 

分 类 号：TQ546.5[化学工程—煤化学工程]