Simulation of a novel single-column cryogenic air separation process using LNG cold energy

被引：37
|
作者：
Zheng Jieyu [1 ]
Li Yanzhong [1 ,2 ]
Li Guangpeng [1 ]
Si Biao [1 ]
机构：
[1] Xi An Jiao Tong Univ, Inst Refrigerat & Cryogen, Xian 710049, Peoples R China
[2] State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
来源：
PROCEEDINGS OF THE 25TH INTERNATIONAL CRYOGENIC ENGINEERING CONFERENCE AND INTERNATIONAL CRYOGENIC MATERIALS CONFERENCE 2014 | 2015年 / 67卷
关键词：
heat pump; cryogenic air separation; single-column process; LNG cold energy recovery; Aspen Hysys (R) simulation;
D O I：
10.1016/j.phpro.2015.06.021
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, a novel single-column air separation process is proposed with the implementation of heat pump technique and introduction of LNG cold energy. The proposed process is verified and optimized through simulation on the Aspen Hysys (R) platform. Simulation results reveal that the power consumption per unit mass of liquid product is around 0.218 kWh/kg, and the total exergy efficiency of the system is 0.575. According to the latest literatures, an energy saving of 39.1% is achieved compared with those using conventional double-column air separation units. The introduction of LNG cold energy is an effective way to increase the system efficiency. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码：116 / 122
页数：7
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