掺氢天然气丙烷预冷混合制冷剂液化分离影响因素  

Affecting Factors for Liquefaction and Separation of Propane Mixed Refrigerant Cycle of Hydrogen-blended Natural Gas

作　　者：王琳 朱辰 杨中峰 张永祥[3] 惠文颖 WANG Lin;ZHU Chen;YANG Zhongfeng;ZHANG Yongxiang;HUI Wenying(School of Mechanical Engineering,Southwest Petroleum University,Chengdu 610500,China;PetroChina Huabei Oilfield Company,Xinji 052360,China;China Petroleum Pipeline Engineering Corporation,Langfang 065000,China;PipeChina Gansu Company,Lanzhou 730000,China)

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]中国石油华北油田公司,河北辛集052360 [3]中国石油天然气管道工程有限公司,河北廊坊065000 [4]国家石油天然气管网集团有限公司甘肃分公司,兰州730000

出　　处：《油气与新能源》2024年第3期21-29,共9页Petroleum and new energy

基　　金：国家自然科学基金青年基金项目“基于流固耦合动力学的气液两相流管道振动特性研究”(51904259)。

摘　　要：目前常用的拖车及罐车输氢方式运输量小、投入成本高,将天然气作为氢气运输的载体,利用天然气管网进行运输是实现氢气大规模、长距离运输的重要方式,经管网运输后的掺氢天然气可以直接利用或分离再利用。利用ASPEN HYSYS软件建立掺氢天然气液化分离工艺模型,通过对掺氢天然气液化分离工艺流程的对比,确定采用丙烷预冷混合制冷剂液化分离工艺。通过对不同掺氢比的原料气在不同的入口流量、压力、温度条件下,液化分离所产生的功耗、比功耗,以及氢气分离率、天然气液化率的分析,得出结论:掺氢比越高,氢气分离率越高,天然气液化率越低。在丙烷预冷混合制冷剂液化工艺中,可以通过提高原料气压力及流量、降低原料气温度,从而降低液化工艺的功耗,优化液化工艺流程。The commonly used hydrogen transportation methods of trailers and tankers have small transportation volume and high investment cost.Taking natural gas as the carrier of hydrogen transportation and using natural gas pipeline network for transportation is an important way to realize large-scale and long-distance transportation of hydrogen.Hydrogen natural gas can be used directly or separated and then reused.The paper builds the liquefaction and separation process model of hydrogen-blended natural gas using ASPEN HYSYS software,determines propane mixed refrigerant cycle liquefaction and separation as main process by comparing all kinds of liquefaction and separation processes of hydrogen-blended natural gas.It analyzes power consumption and specific power as well as hydrogen separation rate and natural gas liquefaction rate according to the feed gas with different hydrogen blend rate and at the conditions of the different inlet flow rates,pressures,and temperatures and draws such conclusions as the higher the hydrogen separation rate and the lower the natural gas liquefaction rate with the higher hydrogen-blended rate and increasing the feed gas pressure and flow and reducing feed gas temperatures could reduce the process power consumption and optimize the liquefaction process.

关 键 词：氢气 天然气 液化 分离 掺氢天然气 

分 类 号：TE645[石油与天然气工程—油气加工工程]