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Optimizing ethane recovery in turboexpander processes

机译:优化涡轮膨胀机工艺中的乙烷回收率

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Optimization of ethane recovery using the CRR process shows that, except for the case of lean gas at low demethanizer pressure, the CRR process reduces to GSP, in which there is no reflux stream and therefore no added cryogenic compression and heat exchange equipment. Adding a second cold separator, operating at lower temperature, in GSP is found to lead to more or less recovery depending on the NGL content of the feed gas and the demethanizer pressure. GSP is also compared with the conventional turboexpander process. Optimization shows that adding more equipment or even flow splitting may lead to less ethane recovery. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译:使用CRR工艺对乙烷回收的优化表明,除了在低脱甲烷塔压力下的贫气情况外,CRR工艺会还原为GSP,GSP中没有回流,因此没有增加低温压缩和热交换设备。据发现,根据进料气的NGL含量和脱甲烷塔压力,在GSP中添加第二个在较低温度下运行的冷分离器或多或少会导致回收率的提高。 GSP还与常规涡轮膨胀机工艺进行了比较。优化表明增加更多的设备甚至分流可能导致乙烷回收率降低。 (C)2014大韩工业化学工程学会。由Elsevier B.V.发布。保留所有权利。

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