| 吸附余压预冷的煤层气混合制冷剂液化流程 |
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| 引用本文： | 高婷,林文胜,顾安忠,辜敏.吸附余压预冷的煤层气混合制冷剂液化流程[J].化学工程,2010,38(2). |
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| 作者姓名： | 高婷 林文胜 顾安忠 辜敏 |
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| 作者单位： | 1. 上海交通大学,制冷与低温工程研究所,上海,200240
2. 重庆大学,采矿工程系,重庆,400044 |
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| 基金项目： | 国家高技术研究发展计划(863计划)项目资助(2006AA06Z234) |
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| 摘 要： | 煤层气(CBM)作为一种非常规的天然气,常常含有较多氮气,因此其液化方法也有所不同。文章提出了一种针对带压气源的新型吸附-液化一体化的煤层气混合制冷剂循环(MRC)液化流程。首先通过变压吸附实现氮/甲烷的分离,之后浓缩甲烷进入后续液化流程,而分离出的带余压氮气则直接膨胀对浓缩甲烷进行预冷。并根据浓缩甲烷预冷后不同的温度范围分别设计了3种MRC液化过程。通过HYSYS模拟优化得出了不同含氮摩尔分数及不同吸附余压下使MRC流程单位液化功最小的混合制冷剂配比,并比较了相应的一体化流程和不带预冷的普通MRC液化流程的系统单位产品液化功。结果表明,高含氮摩尔分数下,一体化流程能够大大地降低系统单位功耗。
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| 关 键 词： | 煤层气 液化流程 混合制冷剂循环 吸附余压利用 |
Mixed-refrigerant cycle liquefaction process of coal-bed methane precooled by utilizing residue pressure of adsorption |
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| GAO Ting,LIN Wen-sheng,GU An-zhong,GU Min.Mixed-refrigerant cycle liquefaction process of coal-bed methane precooled by utilizing residue pressure of adsorption[J].Chemical Engineering,2010,38(2). |
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| Authors: | GAO Ting LIN Wen-sheng GU An-zhong GU Min |
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| Affiliation: | 1.Institute of Refrigeration and Cryogenics;Shanghai Jiao Tong University;Shanghai 200240;China;2.Department of Mining Engineering;Chongqing University;Chongqing 400044;China. |
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| Abstract: | As a kind of unconventional natural gas,coal-bed methane(CBM) usually consists of a lot of nitrogen,so the liquefaction method is different.For CBM with some degree of pressure,a novel mixed-refrigerant cycle(MRC) liquefaction process was proposed,which integrates adsorption-liquefaction together by utilizing the residue pressure of the waste nitrogen.Methane was firstly separated from nitrogen by pressure-swing adsorption,and then the enriched methane was induced into the liquefaction process,while the rel... |
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| Keywords: | coal-bed methane liquefaction process mixed-refrigerant cycle utilization of residue pressure of adsorption |
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