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J4  2013, Vol. 47 Issue (3): 549-553    DOI: 10.3785/j.issn.1008-973X.2013.03.022
化学工程     
基于LNG卫星站冷能利用的小型空分流程
沈崴,孙荣泽,汤珂,金滔
浙江大学 制冷与低温研究所,浙江 杭州 310027
Small-scale air separation process utilizing cold energy  from LNG satellite station
SHEN Wei, SUN Rong-ze, TANG Ke, JIN Tao
Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China
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摘要:

为有效利用液化天然气(LNG)所含的低温位、高品质冷能,并针对LNG卫星站冷能随时间波动的特点,提出一种新型的小型空分流程.该空分流程通过调节循环氮气量来适应LNG用量的波动,同时利用倒灌液氮的方法在LNG所供冷量不足时补足系统所需的制冷量要求.利用HYSYS软件对该流程在4种不同LNG用量的工况下进行了模拟计算.结果表明:液氮在LNG富余时的产出储存并在LNG短缺时的倒灌补足的方案,实现了对供应波动的LNG冷能起到“移峰填谷”作用.经系统优化,去除了传统系统中存在的低温压缩机,避免了由此带来的技术难度.

Abstract:

A novel small-scale air separation process was proposed to effectively utilize the high-quality cold energy from liquefied natural gas (LNG) satellite station, according to its feature of time-dependent fluctuation. The process can accommodate the fluctuating LNG flow rate by adjusting the circulating nitrogen gas and by reversely inputting liquid nitrogen to meet the refrigeration demand when the LNG cold energy is insufficient. Simulations were carried out in four LNG flow rate cases with the process software HYSYS. The results show that producing liquid nitrogen when LNG is excessive and reversely inputting liquid nitrogen when insufficient can reasonably balance the fluctuating LNG cold energy. The compressor working at low temperature in traditional systems can be eliminated through optimizing the process, which then avoids the associated technical difficulties.

出版日期: 2013-03-01
:  TQ 116.15  
基金资助:

钱江人才计划资助项目(2010R10015);浙江省人事厅留学归国人员择优资助项目. 

通讯作者: 汤珂,男,副教授.     E-mail: ktang@zju.edu.cn
作者简介: 沈崴(1986- ),男,硕士生,主要从事低温工程研究.
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引用本文:

沈崴,孙荣泽,汤珂,金滔. 基于LNG卫星站冷能利用的小型空分流程[J]. J4, 2013, 47(3): 549-553.

SHEN Wei, SUN Rong-ze, TANG Ke, JIN Tao. Small-scale air separation process utilizing cold energy  from LNG satellite station. J4, 2013, 47(3): 549-553.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2013.03.022        http://www.zjujournals.com/eng/CN/Y2013/V47/I3/549

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