基于溴化锂制冷的脱水系统集成设计研究  

Study on integration and process of dehydration system based on lithium bromide cooling technology

作　　者：黄克海[1,2] 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中国煤炭科工集团重庆研究院有限公司,重庆400039

出　　处：《能源与环保》2017年第7期7-10,16,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家科技重大专项(2016ZX05045006)

摘　　要：瓦斯发电由于其投资少、市场回报快,已成为煤层气利用最主要的一种方式。经调查发现,发电机组的发电效率一直处于30%左右,甚至更低。瓦斯中的含水量是影响发电机组发电效率的一个重要因数,在分析现有脱水技术及装置特点的基础上,提出了溴化锂制冷脱水系统。介绍了溴化锂制冷脱水技术机理及系统构成;开展了溴化锂制冷脱水系统集成设计研究,包括换热器选型及工艺参数设计、溴化锂制冷机组选型及工艺参数设计以及机械脱水装置选型设计;基于山西某低浓度瓦斯发电站DN500 mm的瓦斯输送管路分析了脱水系统对发电效率的影响,验证了溴化锂制冷脱水系统具有良好的经济效益。Gas power generation has become one of the most important ways of coalbed methane utilization because of its less investment and quick interest return. The survey found that the power generation efficiency of generating units has been around 30%,or even less.The water content of the gas is an important factor which affects the efficiency of generating sets. This paper presented the lithium bromide refrigeration dehydration system based on analyzing the characteristics of the existing dewatering technology and device on. The paper first introduced lithium bromide refrigeration dehydration technology mechanism and system constitution; then carried out research on the integration and process of lithium bromide refrigeration dehydration system,including the selection and design of process parameters for heat exchanger; lithium bromide refrigeration unit selection and process parameter design and mechanical dewatering equipment selection design. At last,this paper analyzed the effect of dehydration system on power generation efficiency based on DN500 mm gas pipeline of a low concentration gas power generation in Shanxi,and verified that lithium bromide refrigeration dehydration system has good economic benefit.

关 键 词：瓦斯发电 溴化锂制冷 脱水系统 发电效率 换热器 机械脱水装置 

分 类 号：TB66[一般工业技术—制冷工程]