石油与天然气化工
石油與天然氣化工
석유여천연기화공
CHEMICAL ENGINEERING OF OIL AND GAS
2015年
2期
54-59
,共6页
马国光%高俊%魏向东%李晋
馬國光%高俊%魏嚮東%李晉
마국광%고준%위향동%리진
分输站%混合冷剂%LNG%膨胀%经济效益
分輸站%混閤冷劑%LNG%膨脹%經濟效益
분수참%혼합랭제%LNG%팽창%경제효익
gas-distributing station%mixed refrigerant%LNG%expansion%economic benefit
为了提高利用分输站压差制冷液化天然气工艺的液化率，该工艺增加了混合冷剂外冷，其液化流程可分为膨胀前预冷液化天然气流程和膨胀后外冷液化天然气流程。对两种工艺流程建立最大年均利润总额目标函数，并对其自由度敏感性进行分析。通过实例分析计算得出，分输站利用压差液化天然气工艺采用膨胀前预冷比膨胀后外冷经济效益更高。
為瞭提高利用分輸站壓差製冷液化天然氣工藝的液化率，該工藝增加瞭混閤冷劑外冷，其液化流程可分為膨脹前預冷液化天然氣流程和膨脹後外冷液化天然氣流程。對兩種工藝流程建立最大年均利潤總額目標函數，併對其自由度敏感性進行分析。通過實例分析計算得齣，分輸站利用壓差液化天然氣工藝採用膨脹前預冷比膨脹後外冷經濟效益更高。
위료제고이용분수참압차제랭액화천연기공예적액화솔，해공예증가료혼합랭제외랭，기액화류정가분위팽창전예랭액화천연기류정화팽창후외랭액화천연기류정。대량충공예류정건립최대년균리윤총액목표함수，병대기자유도민감성진행분석。통과실례분석계산득출，분수참이용압차액화천연기공예채용팽창전예랭비팽창후외랭경제효익경고。
In order to improve the liquefied rate of utilizing gas pressure energy of gas-distributing station to liquefy natural gas,the mixed refrigerant cycle(MRC)was increased in the process.The natural gas liquefaction processes include pre-cooling of LNG before expander and external cooling af-ter expander.The objective function of the max annual average total profit is established to analyze the effect of degrees sensitivity on the max annual average total profit of two liquefaction processes. The results of analysis and calculation indicate that MRC before the expander process can realize high-er economic benefit than MRC after the expander.
