天然气净化用过滤元件性能测定与分析.pdf

油杌械
2015年第43卷第12期
CHINA PE TROI. FUM MACHINERY
81
油气田开发工程
天然气净化用过滤元件性能测定与分析
肖连古自强常程2邵春明姬忠礼2
(1.中国石油西部管道公司2.中国石油大学(北京)机与储运工程学院
摘要:在天然气长距离管道输送过程中,天然气夹带的固态及液态杂质严重影响压缩机组及
管道的可靠运行。为此,利用天然气净化用过滤元件性能检測装置对离心压缩机干气密封过滤器
滤芯的性能进行了检測。检测结果表明,所建立的检测方法可有效评价过滤元件的气液过滤性能、
气固过滤性能、耐冲击性能和压溃特性;滤芯压降变化情况在不同过滤过程中存在明显差别,气
液过滤中滤芯压降逐渐升高,最终在稳态阶段保持稳定,而在气固过滤中,濾芯压降始终昰增长
趋势;滤芯气液过滅效率与气固过漶效率之间无对应关系,现场工況下,天然气内含有液态杂质
时,宜选用气液过漶效率作为潓芯过瀌性能考核指标;当瀌芯工作压力波动小于0.5MPa时,短
暂的气流冲击不会影响滤芯的过滤性能。研究结果可为滤芯的选用提供试验依据。
关键词:天然气;漶芯;过漶;耐冲击;压溃;千气密封
中图分类号:T832文献标识码:Adoi:10.16082/j.cnki.isn.1001-4578.2015.12.018
Performance Test of Filter Cartridge for Natural Gas Puritication
Xiao Lian Gu Ziqiang Chang Cheng
umming
(1. Petrochina West Pipeline ompany; 2. College of Mechanical and ransportation Engineering, China University of Petroleum
Beijing))
Abstract In the long-distance transmission process of natural gas, the reliable operation of the compressor u-
nits and pipelines is seriously affected by dusts and droplets entrained in natural gas. The performance of dry seal
gas filter cartridges used in centrifugal compressors is investigated. The results show that gas-liquid filtration per
formance, gas-solid filtration performance, impact resistance performance and collapse performance can be effec
tively evaluated by the established measurement methods. Significant difference in the evolution of pressure drop can
be observed in different filtration process. Pressure drop increases until it remains conslant al the steady stage in the
gas-liquid filtration process. However, pressure drop remains increasing through the gas-solid filtration
process. There is no corresponding relation between gas-liquid filtration efficiency and gas-solid filtration efficien
cy. When droplets are entrained in natural gas at practical condition gas-liquid filtration efficiency is preferable for
being the evaluation index of filtration performance. When the fluctuation of pressure is less than 0.5 Mpa, the per-
formance of the filter cartridges will not be affected by short period airflow impact
Key words natural gas; filter cartridge; filtration impact resistance; collapse; dry
有的固态及液态杂质会对大型压缩机组和计量仪器
0
等造成损害,严重影响压缩机组及管道的供气安全
和长周期运行2。为除去天然气中夹带的杂质
在天然气长距离管道输送过程中,天然气内含长输管线各压气站和分输站中一般通过安装相应的
基金项日:国家自然科学基金项口“天然气浄化用气液聚结滤芯过滤分离机理研究”(51376196);国家科技重大专项“百亿方级净
化厂安全优质运行技术”(20117XO5017-005)、“煤层气除液技术及其装备”(20117X05039-001-003);西部管道公可科研项目“天然气
压缩机干气密封过滤系统国产化研究与应用”(XC22-2013-(010)。