CAJ | 학술논문

利用深冷技术对含氧煤层气进行液化处理,可回收其中的甲烷,减少污染排放。应用HYSYS软件对低浓度含氧煤层气液化精馏工艺流程进行了模拟,并考察精馏塔回流比、塔板数量、精馏压力对甲烷回收率、LNG产品纯度和LNG单位产品生产能耗的影响。综合考虑可取回流比为1.1~1.2,精馏塔板为25~30块,精馏绝对压力为300~400 kPa。模拟结果可为工艺设计和实际操作提供参考。
이용심랭기술대함양매층기진행액화처리,가회수기중적갑완,감소오염배방。응용HYSYS연건대저농도함양매층기액화정류공예류정진행료모의,병고찰정류탑회류비、탑판수량、정류압력대갑완회수솔、LNG산품순도화LNG단위산품생산능모적영향。종합고필가취회류비위1.1~1.2,정류탑판위25~30괴,정류절대압력위300~400 kPa。모의결과가위공예설계화실제조작제공삼고。
To liguefy and recover methane from the low-concentration oxygen-contained coal-bed methane by cryogenic liquefaction technology can reduce pollution emission. Simulation was made on the cryogenic rectification process of the low-concentration oxygen-contained coal-bed methane by using HYSYS software, and study was carried out on the influence of the reflux ratio of the rectifying tower, the number of trays and the rectification pressure upon the methane recovery rate, the purity of LNG products and the energy consumption of unit LNG product. Through the comprehensive consideration, it came to the conclusion that the desirable reflux ratio was 1. 1 ~ 1. 2, the number of trays was 25 ~ 30 and the absolute rectification pressure was 300 ~ 400 kPa. The simulated results can provide a reference for the process design and actual operation.