不同含氮量煤层气氮膨胀液化流程优化与性能分析  

Optimization and performance analysis of nitrogen expansion liquefaction process for CBM with different nitrogen content

作　　者：高婷[1] 林文胜[1] 顾安忠[1] 辜敏[2,3] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]重庆大学资源及环境科学学院,重庆400030 [3]重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2011年第11期111-116,共6页Journal of Chongqing University

基　　金：国家高技术研究发展计划(863计划)项目(2006AA06Z234)

摘　　要：针对高含氮量的煤层气液化,构建了适用于小型液化装置的氮膨胀液化流程。为考察煤层气中氮含量对液化流程的影响,分别以一定的液化率和甲烷回收率作为限定条件,通过HYSYS模拟计算对不同氮含量(0～70%)下的液化流程进行优化,并以单位产品液化功耗为主要指标,比较各种条件下的系统性能。结果表明,煤层气液化流程的性能随含氮量的变化而改变,但并非单调变化。A nitrogen expansion liquefaction process which is suitable for small-scale liquefaction plants is proposed for coalbed methane（CBM） with high nitrogen content.In order to investigate the effects of the nitrogen content on the liquefaction system performance,optimizations are done for CBM with nitrogen content among 0~70% via simulation and calculation with HYSYS when the liquefaction rate and the methane recovery rate are fixed respectively,and with the unit product liquefaction power consumption as the major index,the corresponding system performance is compared.The results show that,the system performance of CBM liquefaction process changes greatly along with nitrogen content.However,the changing is not monotonous.

关 键 词：煤层气 气体液化 流程设计 优化 氮膨胀 功耗 

分 类 号：TB619.3[一般工业技术—制冷工程]