發(fā)布時間：2018-05-06 06:43

  本文選題：BOG處理 + 冷能利用��； 參考：《油氣儲運》2017年04期

【摘要】：閃蒸氣(Boil-off Gas,BOG)的處理關系著LNG接收站的能耗及安全平穩(wěn)運行。對比了目前常用的BOG直接壓縮工藝和再冷凝液化工藝在工藝流程及能耗方面的差異,并分析了外輸量、外輸壓力對BOG處理工藝能耗的影響。由此提出了BOG處理工藝的優(yōu)化措施:針對現(xiàn)有BOG處理工藝流程加熱再冷卻過程中存在冷熱交換而造成能量損耗的問題,利用LNG冷能通過換熱器冷卻壓縮后的BOG,以LNG自身冷能取代現(xiàn)有BOG處理流程中的耗能元件再冷凝器,同時降低壓縮機出口BOG的溫度,減少加熱再冷卻過程的能量損耗。利用HYSYS軟件分別對優(yōu)化前后BOG處理工藝進行能耗分析,結果表明:BOG處理工藝優(yōu)化前后能耗分別為2 677.82 k W、1 990.77 k W,優(yōu)化后BOG處理工藝節(jié)約能耗約25.66%。
[Abstract]:The handling of the flash steam Boil-off Gasoff (BOG) is related to the energy consumption and the safe and stable operation of the LNG receiving station. The differences in process flow and energy consumption between BOG direct compression process and recondensing liquefaction process are compared, and the effects of external transport volume and pressure on the energy consumption of BOG treatment process are analyzed. Therefore, the optimization measures of BOG treatment process are put forward: in view of the problem of energy loss caused by cold and heat exchange during heating and recooling process of existing BOG treatment process, In this paper, the condenser of energy dissipation element in the current BOG process is replaced by the cooling energy of LNG, which is cooled by LNG cold energy through the heat exchanger, and the temperature of BOG at the outlet of the compressor is reduced, and the energy loss in the process of heating and recooling is reduced. The energy consumption of BOG treatment process before and after optimization was analyzed by HYSYS software. The results showed that the energy consumption before and after optimization was 2 677.82 kW / 1 990.77 kW, and the energy consumption of BOG treatment process after optimization was about 25.66 kW.
【作者單位】： 遼寧石油化工大學石油天然氣工程學院;
【分類號】：TE974

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本文編號：1851252