压缩天然气分输站场涡流管技术调压应用  

Application of vortex tube technology in pressure regulation in compressed natural gas(CNG) offtake station

作　　者：冯少广[1] 赵吉诗[1] 张鑫[1] 李荣光[1] 尹克江 刘宝明 刘天哲 

机构地区：[1]中国石油管道科技研究中心中国石油集团油气储运重点实验室,河北廊坊065000 [2]中国石油管道华中输气分公司,湖北武汉430074 [3]中国石油管道公司沈阳输油气分公司,辽宁沈阳110031

出　　处：《油气储运》2013年第12期1325-1329,1335,共6页Oil & Gas Storage and Transportation

基　　金：中国石油管道公司2011年重点科技攻关项目"输气站场涡流管调压与节能应用研究及示范";20110304

摘　　要：压缩天然气分输站场通常采用橇装调压装置对上游高压天然气降压后再分输给下游用户,但调压阀在降压过程中因"焦耳-汤姆森效应"容易发生冰堵现象,给站场安全运行带来隐患。涡流管调压技术能够在降压的同时有效地解决冰堵问题,回收利用压力差能,应用前景广阔。针对某站场的实际工况,完成了涡流管技术调压方案设计,阐述了涡流管技术调压的运行方式,并对可能出现的问题以及预期应用效果进行了说明。设计结果表明:涡流管取代调压橇在技术上是可行的,而且能够避免冰堵问题的产生,减少调压器日常维护工作量及费用,同时,还能利用调压过程中产生的冷能,达到节能降耗的目的。Skid-mounted pressure regulation instruments are usually used to reduce the high pressure of natural gas in the upstream which is distributed to downstream users after that. But during the pressure drop process, because of ＂Joule- Thomson Effect＂, ice blockage is likely to happen to the pressure regulating valve, which is a potential risk to the station＇s safety. Pressure regulation with vortex tube, which can solve the problem of ice blockage during the pressure drop process effectively and recycle the energy from pressure drop, shows a broad application prospect. According to the actual working conditions of a certain station, the scheme design for pressure regulation with vortex tube is made, in which the operation mode is stated, besides, possible problems and expected application effect are explained. Design result indicates that using vortex tube in place of skid-mounted pressure regulation instruments is feasible, which can avoid ice blockage, reduce the workload and cost of daily maintenance for pressure regulating valve. Meanwhile, the cold energy produced in the process of pressure regulation can be used to save energy.（7 Figures, 5 References）

关 键 词：输气站场 调压 涡流管 节能 

分 类 号：TE832[石油与天然气工程—油气储运工程]