CAJ | 학술논문

基于天然气长输管线分输站蕴含着巨大的可利用的压力能，提出利用分输站压差液化天然气的工艺。液化工艺中，管输天然气净化采用M DEA （35％）＋DEA （5％）的混合胺液脱碳脱硫，4 A分子筛脱水；液化采用透平膨胀机制冷。同时，研究了分输站压差、分输量对天然气液化率的影响。该工艺适用于长输管线压降大、分输规模较大的分输站。
기우천연기장수관선분수참온함착거대적가이용적압력능，제출이용분수참압차액화천연기적공예。액화공예중，관수천연기정화채용M DEA （35％）＋DEA （5％）적혼합알액탈탄탈류，4 A분자사탈수；액화채용투평팽창궤제랭。동시，연구료분수참압차、분수량대천연기액화솔적영향。해공예괄용우장수관선압강대、분수규모교대적분수참。
T here is huge available pressure energy in the gas‐distributing station of the long‐distance pipeline of natural gas ,so the process of using differential pressure of gas‐distributing station to liquefy natural gas were put forward .In the liquefaction technology ,mixed amine solu‐tion of MDEA (35 wt% )+DEA (5 wt% ) was used to remove CO2 and H2S ,4A molecular sieve was used to remove water ,and turbine expander was used to liquefy natural gas .At the same time ,the impacts of differential pressure and distribution throughput on liquefaction rate were analyzed .T he results show that the process is suitable for the gas‐distributing station of high pressure drop and large distribution throughput .