全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
化工学报  2015 

利用LNG冷能的空分系统换热网络布置及多能级匹配性能

DOI: 10.11949/j.issn.0438-1157.20150693, PP. 76-84

Keywords: 液化天然气,冷能回收,空分系统,换热网络,流程模拟,过程控制,系统工程,数值分析

Full-Text   Cite this paper   Add to My Lib

Abstract:

分析了常见的基于空分系统的液化天然气(LNG)冷能利用方式,依据LNG冷能的能谱特点及空分系统运行安全性的特殊要求提出较优的冷能利用方案;针对不同压力等级工况提出LNG与N2的换热网络布置方案,对提出的4种LNG-N2换热网络分别进行了流程模拟,并与传统空分系统和已有的LNG冷能利用空分系统进行了比较,结果表明:新的LNG换热网络能有效降低空分系统的单位液态产品能耗,采用LNG-N2双高压方案时为0.217kW·h·kg-1,若对LNG出口压力没有限制则采用LNG-N2双低压方案可进一步降低能耗至0.176kW·h·kg-1,相比已有的LNG冷能利用空分系统能耗分别降低了15.9%和31.8%;同时研究了LNG冷能的多能级换热匹配性能,分析了当N2压力不变时LNG压力变动对各个方案换热均匀性的影响。研究结果可为不同工况下选择合适的LNG换热压力提供参考。

References

[1]  Rocca V L. Cold recovery during regasification of LNG(Ⅰ):Cold utilization far from the regasification facility[J].Energy,2010,35(5):2049-2058.
[2]  Rocca V L. Cold recovery during regasification of LNG(Ⅱ):Applications in an agro food industry and a hypermarket[J].Energy,2011,36(8):4897-4908.
[3]  Luo Huifang(罗惠芳).Research on cold energy utilization of liquefied natural gas[D].Wuhan:Huazhong University of Science & Technology,2011.
[4]  Xiong Yongqiang(熊永强),Li Yajun(李亚军),Hua Ben(华贲).Integration and optimization of cold energy utilization of liquefied natural gas[J].Journal of South China University of Technology:Natural Science Edition(华南理工大学学报:自然科学版),2008,36(3):20-25.
[5]  He Hongming(贺红明),Lin Wensheng(林文胜).Power generation using LNG cold energy[J].Cryogenics and Superconductivity(低温与超导),2006,34(6):432-436.
[6]  Chen Zeshao(陈则韶),Cheng Wenlong(程文龙),Hu Peng(胡芃).A new air separation system:by using cold energy of LNG[J].Journal of Engineering Thermophysics(工程热物理学报),2004,25(6):913-916.
[7]  Jin Tao(金滔),Hu Jianjun(胡建军),Chen Guobang(陈国邦),Tang Ke(汤珂).Novel air separation unit cooled by liquefied natural gas cold energy and its performance analysis[J].Journal of Zhejiang University:Engineering Science(浙江大学学报:工学版),2007,41(5):836-839.
[8]  Yan Na(燕娜),Li Yanzhong(厉彦忠),Tuo Hanfei(脱翰斐).Novel liquid product air separation system based on cold energy of liquefied natural gas[J].Journal of Xi'an Jiaotong University(西安交通大学学报),2007,41(1):122-124.
[9]  Yan Na(燕娜),Li Yanzhong(厉彦忠).Scheme analysis on the liquid product air separation plant using the cold energy of LNG[J].Cryogenics(低温工程),2007,20(2):40-45.
[10]  Xu W,Duan J,Mao W.Process study and exergy analysis of a novel air separation process cooled by LNG cold energy[J].Journal of Thermal Science,2014,23(1):77-84.
[11]  Wu Jiying(吴集迎),Ma Yimin(马益民),Chen Shiqing(陈仕清).System design and analysis of applying LNG cold energy to refrigerated warehouses[J].Joumal of Jimei University:Natural Science(集美大学学报:自然科学版),2010,15(1):44-47.
[12]  Xie Chungang(谢春刚),Sun Jing(孙靖).Mechanism research on seawater freezing desalination using cold energy of LNG[J].Cryogenics and Superconductivity(低温与超导),2012,40(2):11-15.
[13]  Xiong Yongqiang(熊永强),Li Yajun(李亚军),Hua Ben(华贲).Optmized design of recovery process of light hydrocarbons from LNG[J].Journal of South China University of Technology:Natural Science Edition(华南理工大学学报:自然科学版),2007,35(7):62-66.
[14]  Zhang Zhongxiu(张中秀),Zhou Weiguo(周伟国).Air separation technology utilizing LNG cold energy[J].Gas & Heat(煤气与热力),2007,27(6):18-20.
[15]  Herron D M,Choe J S,Dee D P.Air separation process utilizing refrigeration extracted from LNG for production of liquid oxygen[P]:US,20080216512 A1.2006.
[16]  Lin Wensheng(林文胜),Gu Anzhong(顾安忠),Lu Xuesheng(鲁雪生),Wang Rongshun(汪荣顺).Thermo-dynamic analysis of LNG cold utilized by air separation units[J].Cryogenic Technology(深冷技术),2003,(3):26-30.
[17]  Shen Wei(沈崴),Sun Rongze(孙荣泽),Tang Ke(汤珂),Jin Tao(金滔).Small-scale air separation process utilizing cold energy from LNG satellite station[J].Journal of Zhejiang University:Engineering Science(浙江大学学报:工学版),2013,47(3):549-553.
[18]  Velautham S,Ito T,Takata Y.Zero-emission combined power cycle using LNG cold[J].JSME International Journal,Series B:Fluids and Thermal Engineering,2001,44(4):668-674.
[19]  Cheng Wenlong(程文龙),Zhao Rui(赵锐),Chen Zeshao(陈则韶),Zhang Hongze(张宏泽).Evaluation of a CO2 zero emission energy system with air separation by using LNG cold energy[J].Proceedings of the CSEE(中国电机工程学报),2005,25(16):102-107.
[20]  Zheng Xiaoping(郑小平).Brief analysis on liquid ASU process types[J].Cryogenics and Superconductivity(低温与超导),2012,40(5):17-20.
[21]  Zheng Xiaoping(郑小平),Peng Xikui(彭喜魁),Pei Hongzhen(裴红珍).Comparison between process types of full-liquid ASU based on LNG cold energy[J].Cryogenics and Superconductivity(低温与超导),2014,42(5):17-21.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133