BOG recovery technology of LNG station based on a high power Stirling cryocooler

doi:10.11949/j.issn.0438-1157.20150756

CIESC Journal ›› 2015, Vol. 66 ›› Issue (S2): 166-171.DOI: 10.11949/j.issn.0438-1157.20150756

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BOG recovery technology of LNG station based on a high power Stirling cryocooler

ZHANG Ning^1,2, XU Ya¹, SHEN Qie³, ZHANG Chong⁴, SHAO Bin⁴, SUN Daming^1,2

1. Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, Zhejiang, China;
2. Changzhou Industrial Technology Research Institute, Zhejiang University, Changzhou 213000, Jiangsu, China;
3. Institute of Process Equipment, Zhejiang University, Hangzhou 310027, Zhejiang, China;
4. Jiangsu Cryote Cryogenic Technology Co., Ltd., Changzhou 213000, Jiangsu, China

Received:2015-05-27 Revised:2015-06-05 Online:2015-08-31 Published:2015-08-31
Supported by:
supported by the National Natural Science Foundation of China(51406218,51276156).

基于大冷量斯特林制冷机的LNG加气站BOG再液化回收技术

张宁^1,2, 徐雅¹, 沈惬³, 张冲⁴, 邵斌⁴, 孙大明^1,2

1. 浙江大学制冷与低温研究所, 浙江杭州 310027;
2. 浙江大学常州工业技术研究院, 江苏常州 213000;
3. 浙江大学化工机械研究所, 浙江杭州 310027;
4. 江苏克劳特低温技术有限公司, 江苏常州 213000

通讯作者: 孙大明
基金资助:
国家自然科学基金项目(51406218,51276156)。

Abstract

Abstract:

Three kinds of boil-off gas(BOG)recovery method of liquefied natural gas(LNG)filling station were comparatively analyzed and the recovery technology using a high power Stirling cryocooler was the best choice.This recovery method was not restricted by the nature gas pipeline network and compressed nature gas(CNG)and the "zero emissions" in LNG storage and transportation was performed.Its economy and social benefit were distinct.On the basis of the above analysis,refrigerating capacity of the single integral Stirling cryocooler and liquefaction capacity of BOG were discussed.The experimental and calculation results showed that the cooling capacity of cryocooler are 1 kW at 77 K and 2 kW at 110 K.The monthly liquefaction capacity of BOG is more than 8 t and meets the demands of cooling capacity of BOG recovery.

Key words: liquefaction, natural gas, recovery, gas station, BOG, Stirling cryocooler

摘要：

对比分析了LNG(液化天然气)加气站3种BOG(蒸发气)回收方式,指出采用大冷量斯特林制冷机的BOG再液化回收技术,不仅解决了传统回收方式对天然气管网和CNG(压缩天然气)站的依赖,而且实现了液化天然气储运过程中的"零排放",经济和社会效益显著。在此基础上,探讨了单级整体式斯特林制冷机的制冷能力以及BOG的液化量,试验和计算结果表明:单级斯特林制冷机的制冷量达到1 kW@77 K和2 kW@110 K,每月BOG液化能力≥8 t,满足了我国小型LNG站BOG回收过程对冷量的需求。

关键词: 液化, 天然气, 回收, 加气站, 蒸发气, 斯特林制冷机

CLC Number:

TE85

ZHANG Ning, XU Ya, SHEN Qie, ZHANG Chong, SHAO Bin, SUN Daming. BOG recovery technology of LNG station based on a high power Stirling cryocooler[J]. CIESC Journal, 2015, 66(S2): 166-171.

张宁, 徐雅, 沈惬, 张冲, 邵斌, 孙大明. 基于大冷量斯特林制冷机的LNG加气站BOG再液化回收技术[J]. 化工学报, 2015, 66(S2): 166-171.

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BOG recovery technology of LNG station based on a high power Stirling cryocooler

基于大冷量斯特林制冷机的LNG加气站BOG再液化回收技术

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