甲烷回收率对含氧煤层气液化工艺影响研究

Influence of methane recovery rate on oxygenated CBM liquefaction process

利用HYSYS软件对含氧煤层气液化工艺进行模拟计算，分析甲烷回收率对液化经济性和安全性的影响，得出如下结论，甲烷回收率对制冷压缩功耗有较大影响；甲烷回收率越高，液化经济性越好，但甲烷回收率会影响液化尾气和精馏塔内的安全。综合经济性和安全性考虑，可选择的甲烷回收率为60％－65％和90％－95％。

The oxygenated CBM liquefaction process is simulated by using HYSYS software. The effect of methane recovery rate on the economy and safety of liquefaction process is studied. The result shows that the methane recovery rate has a greater impact on the refrigeration compression power. Higher methane recovery rate leads to better economy of liquefaction. But the methane recovery rate will influence the safety of distillation column. By considering the economic and safety,the choice of methane recoveries are 60% -65% and 90% -95% ,respectively.