空温式汽化器低温氮气提供方案反向设计
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摘要
在天津某液化天然气(LNG)项目中突破常规空温式汽化器的限制,反向设计低温氮气提供方案,采用空温式汽化器直接提供低温氮气的方案对卸料管道进行预冷,效果良好。对天津某LNG项目的特殊性、空温式汽化器的常规用法、低温氮气供应方案的设计思路、低温氮气方案的选择以及改变空温式汽化器常规用法反向提供氮气方案的实施等方面进行了介绍。只要氮气提供方案设计参数合理、实施措施得当,采用空温式汽化器直接提供低温氮气进行预冷完全可行,同时可大幅降低调试费用,提高作业安全性。
The air temperature carburetor was used for providing the cryogenic nitrogen to commission the liquefied natural gas(LNG) terminal unloading pipeline based on inverse design philosophy. The program could break through the limitation of the normal method. The particularity of LNG project, regular method of air temperature carburetor,design philosophy of cryogenic nitrogen supply solution,choosing of program and change of normal application method were introduced. The application of the air temperature carburetor providing the cryogenic nitrogen for LNG terminal pre-cold commissioning is feasible under reasonable design data and measures. The cost was decreased with improved project safety.
The air temperature carburetor was used for providing the cryogenic nitrogen to commission the liquefied natural gas(LNG) terminal unloading pipeline based on inverse design philosophy. The program could break through the limitation of the normal method. The particularity of LNG project, regular method of air temperature carburetor,design philosophy of cryogenic nitrogen supply solution,choosing of program and change of normal application method were introduced. The application of the air temperature carburetor providing the cryogenic nitrogen for LNG terminal pre-cold commissioning is feasible under reasonable design data and measures. The cost was decreased with improved project safety.
引文
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[13] 仇德朋,陈景生.LNG接收站卸料系统的预冷方案分析[J].能源化工,2017,38(2):50-54.QIU D P,CHEN J S. Analysis of pre-cool down for unloading system in LNG terminal[J].Energy chemical industry,2017,38(2):50-54.
[2] 吴兴华,李祥东.空浴式汽化器基础传热问题及研究现状评述[J].低温与超导,2011,39(2):59-63,72.WU X H,LI X D.A review on heat transfer in ambient air vaporizers[J]. Cryogenics and superconductivity,2011,39(2):59-63,72.
[3] 贾晨,王阳阳,耿小鹏.撬装式液氮汽化装置设计[J].机械,2015(10):47-49,58.JIA C,WANG Y Y,GENG X P. The design of liquid nitrogen vaporizing device prizing equipment[J].Machinery,2015(10):47-49,58.
[4] 周丽敏,李祥东,汪荣顺.竖直低温星形翅片管表面结霜及传热传质理论模型[J].低温与超导,2009,37(11):60-64.ZHOU L M,LI X D,WANG R S. A theoretical model for heat and mass transfer during on a vertical cryogenic star-shaped fin-tube[J]. Cryogenics and superconductivity,2009,37(11):60-64.
[5] 李文俊,胡施俊.一种空温式低温星形自增压汽化器的轻量化设计[J].广东化工,2014(7):180-182.LI W J,HU S J. The lightweight design for a self-pressurized ambient vaporizer of cryogenic liquid[J]. Guangdong chemical industry,2014(7):180-182.
[6] 王宏发,窦军查,刘亚峰.气化器的应用与改进措施[J].当代化工,2011,40(4):370-371,399.WANG H F,DOU J C,LIU Y F. Application and improvement measures of carburetors[J]. Contemporary chemical industry,2011,40(4):370-371,399.
[7] 陈叔平,来进琳,殷劲松,等.空温式深冷翅片管气化器表面结霜特性实验研究[J].制冷学报,2010,31(4):26-30.CHEN S P,LAI J L,YIN J S,et al. Experiment on frost characteristic of air-warmed cryogenic finned-tube vaporizer[J]. Journal of refrigeration,2010,31(4):26-30.
[8] 陈叔平,韩宏茵,谢福寿,等.翅片管气化器管内相变传热流动数值模拟[J].低温与超导,2011,39(2):52-56.CHEN S P,HAN H Y,XIE F S,et al. Numerical simulation of phase change heat transfer and flow for fin-tube vaporizer[J]. Cryogenics and superconductivity,2011,39(2):52-56.
[9] 安彭军,谢福寿,陈叔平,等.非稳态下翅片管气化器霜层内温度分布数值研究[J].低温与超导,2012,40(1):57-61.AN P J,XIE F S,CHEN S P,et al. A numerical study on the temperature distribution of unsteady frost layer for finned-tube vaporizer[J].Cryogenics and superconductivity,2012,40(1):57-61.
[10] 陈叔平,姚淑婷,谢福寿,等.基于分形理论的翅片管气化器霜层热导率[J].化工学报,2012,63(12):3855-3860.CHEN S P,YAO S T,XIE F S,et al. Thermal conductivity of frost layer on finned-tube vaporizer based on fractal theory[J].CIESC journal,2012,63(12):3855-3860.
[11] 刘凡,江楠.管道氮气置换混合气体长度分析研究[J].石油化工设备,2012,41(1):11-14.LIU F,JIANG N. Investigation on length of mixed gas for nitrogen replacement in pipeline [J].Petro-chemical equipment,2012,41(1):11-14.
[12] 赵延伟.液化天然气气化站预冷投运方案[J].煤气与热力,2010,30(5):51-55.ZHAO Y W. Precooling operation scheme of LNG vaporizing station[J].Gas & heat,2010,30(5):51-55.
[13] 仇德朋,陈景生.LNG接收站卸料系统的预冷方案分析[J].能源化工,2017,38(2):50-54.QIU D P,CHEN J S. Analysis of pre-cool down for unloading system in LNG terminal[J].Energy chemical industry,2017,38(2):50-54.