Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning

Kong Linghai; Li Wenfeng; Deng Wenyuan; Tong Wenlong

doi:doi:10.11648/j.ogce.20180606.13

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Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning

Kong Linghai, Li Wenfeng, Deng Wenyuan, Tong Wenlong

Published in International Journal of Oil, Gas and Coal Engineering (Volume 6, Issue 6)

Received: 21 August 2018 Accepted: 4 September 2018 Published: 12 October 2018

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Abstract

Before cooling, the LNG tank is filled with nitrogen. During the test run, the tank will be gradually cooled from normal temperature to - 162 C. A large amount of BOG with high nitrogen content will be discharged to the torch in a short time, resulting in a great waste of resources. This paper discusses the difficulty of BOG recovery in LNG tank cooling by studying the conventional methods of LNG tank commissioning. Full nitrogen replacement and "BOG+LNG" tank cooling process are adopted before commissioning. The utilization efficiency of cold energy in receiving station is improved, the flow rate of BOG in receiving station is reduced, and the B in cooling process of LNG tank is realized. BOG zero emissions. The results showed that: (1) nitrogen in LNG tank could be fully replaced by "top intake and bottom exhaust" replacement method; (2) BOG + LNG cooling process could cool the tank, and effectively reduce the BOG flow rate in the cooling process of LNG tank to meet the processing capacity of receiving station and realize zero BOG emission in the cooling process of LNG tank. The technology of LNG tank zero emission commissioning has great reference value for the tank cooling of new storage tanks or receiving stations with the capacity of gasification and outward transportation. At the same time, "top intake bottom exhaust" nitrogen replacement, "BOG + LNG" cooling process has certain enlightenment for optimizing LNG tank design.

Published in	International Journal of Oil, Gas and Coal Engineering (Volume 6, Issue 6)
DOI	10.11648/j.ogce.20180606.13
Page(s)	142-149
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

LNG Tank, Pre-cool Down, Nitrogen Purge, BOG Zero Emission, Dynamic Simulation

References

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APA Style

Kong Linghai, Li Wenfeng, Deng Wenyuan, Tong Wenlong. (2018). Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning. International Journal of Oil, Gas and Coal Engineering, 6(6), 142-149. https://doi.org/10.11648/j.ogce.20180606.13

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ACS Style

Kong Linghai; Li Wenfeng; Deng Wenyuan; Tong Wenlong. Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning. Int. J. Oil Gas Coal Eng. 2018, 6(6), 142-149. doi: 10.11648/j.ogce.20180606.13

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AMA Style

Kong Linghai, Li Wenfeng, Deng Wenyuan, Tong Wenlong. Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning. Int J Oil Gas Coal Eng. 2018;6(6):142-149. doi: 10.11648/j.ogce.20180606.13

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@article{10.11648/j.ogce.20180606.13,
  author = {Kong Linghai and Li Wenfeng and Deng Wenyuan and Tong Wenlong},
  title = {Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {6},
  number = {6},
  pages = {142-149},
  doi = {10.11648/j.ogce.20180606.13},
  url = {https://doi.org/10.11648/j.ogce.20180606.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20180606.13},
  abstract = {Before cooling, the LNG tank is filled with nitrogen. During the test run, the tank will be gradually cooled from normal temperature to - 162 C. A large amount of BOG with high nitrogen content will be discharged to the torch in a short time, resulting in a great waste of resources. This paper discusses the difficulty of BOG recovery in LNG tank cooling by studying the conventional methods of LNG tank commissioning. Full nitrogen replacement and "BOG+LNG" tank cooling process are adopted before commissioning. The utilization efficiency of cold energy in receiving station is improved, the flow rate of BOG in receiving station is reduced, and the B in cooling process of LNG tank is realized. BOG zero emissions. The results showed that: (1) nitrogen in LNG tank could be fully replaced by "top intake and bottom exhaust" replacement method; (2) BOG + LNG cooling process could cool the tank, and effectively reduce the BOG flow rate in the cooling process of LNG tank to meet the processing capacity of receiving station and realize zero BOG emission in the cooling process of LNG tank. The technology of LNG tank zero emission commissioning has great reference value for the tank cooling of new storage tanks or receiving stations with the capacity of gasification and outward transportation. At the same time, "top intake bottom exhaust" nitrogen replacement, "BOG + LNG" cooling process has certain enlightenment for optimizing LNG tank design.},
 year = {2018}
}

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TY  - JOUR
T1  - Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning
AU  - Kong Linghai
AU  - Li Wenfeng
AU  - Deng Wenyuan
AU  - Tong Wenlong
Y1  - 2018/10/12
PY  - 2018
N1  - https://doi.org/10.11648/j.ogce.20180606.13
DO  - 10.11648/j.ogce.20180606.13
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 142
EP  - 149
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20180606.13
AB  - Before cooling, the LNG tank is filled with nitrogen. During the test run, the tank will be gradually cooled from normal temperature to - 162 C. A large amount of BOG with high nitrogen content will be discharged to the torch in a short time, resulting in a great waste of resources. This paper discusses the difficulty of BOG recovery in LNG tank cooling by studying the conventional methods of LNG tank commissioning. Full nitrogen replacement and "BOG+LNG" tank cooling process are adopted before commissioning. The utilization efficiency of cold energy in receiving station is improved, the flow rate of BOG in receiving station is reduced, and the B in cooling process of LNG tank is realized. BOG zero emissions. The results showed that: (1) nitrogen in LNG tank could be fully replaced by "top intake and bottom exhaust" replacement method; (2) BOG + LNG cooling process could cool the tank, and effectively reduce the BOG flow rate in the cooling process of LNG tank to meet the processing capacity of receiving station and realize zero BOG emission in the cooling process of LNG tank. The technology of LNG tank zero emission commissioning has great reference value for the tank cooling of new storage tanks or receiving stations with the capacity of gasification and outward transportation. At the same time, "top intake bottom exhaust" nitrogen replacement, "BOG + LNG" cooling process has certain enlightenment for optimizing LNG tank design.
VL  - 6
IS  - 6
ER  -

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Author Information

Kong Linghai

Golden Bay Lng Ltd, Zhuhai, China
Li Wenfeng

Golden Bay Lng Ltd, Zhuhai, China
Deng Wenyuan

Guangdong Power Grid Ltd, Guangzhou, China
Tong Wenlong

Golden Bay Lng Ltd, Zhuhai, China

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Plain Text BibTeX RIS

APA Style

Kong Linghai, Li Wenfeng, Deng Wenyuan, Tong Wenlong. (2018). Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning. International Journal of Oil, Gas and Coal Engineering, 6(6), 142-149. https://doi.org/10.11648/j.ogce.20180606.13

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ACS Style

Kong Linghai; Li Wenfeng; Deng Wenyuan; Tong Wenlong. Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning. Int. J. Oil Gas Coal Eng. 2018, 6(6), 142-149. doi: 10.11648/j.ogce.20180606.13

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AMA Style

Kong Linghai, Li Wenfeng, Deng Wenyuan, Tong Wenlong. Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning. Int J Oil Gas Coal Eng. 2018;6(6):142-149. doi: 10.11648/j.ogce.20180606.13

Copy | Download

@article{10.11648/j.ogce.20180606.13,
  author = {Kong Linghai and Li Wenfeng and Deng Wenyuan and Tong Wenlong},
  title = {Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {6},
  number = {6},
  pages = {142-149},
  doi = {10.11648/j.ogce.20180606.13},
  url = {https://doi.org/10.11648/j.ogce.20180606.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20180606.13},
  abstract = {Before cooling, the LNG tank is filled with nitrogen. During the test run, the tank will be gradually cooled from normal temperature to - 162 C. A large amount of BOG with high nitrogen content will be discharged to the torch in a short time, resulting in a great waste of resources. This paper discusses the difficulty of BOG recovery in LNG tank cooling by studying the conventional methods of LNG tank commissioning. Full nitrogen replacement and "BOG+LNG" tank cooling process are adopted before commissioning. The utilization efficiency of cold energy in receiving station is improved, the flow rate of BOG in receiving station is reduced, and the B in cooling process of LNG tank is realized. BOG zero emissions. The results showed that: (1) nitrogen in LNG tank could be fully replaced by "top intake and bottom exhaust" replacement method; (2) BOG + LNG cooling process could cool the tank, and effectively reduce the BOG flow rate in the cooling process of LNG tank to meet the processing capacity of receiving station and realize zero BOG emission in the cooling process of LNG tank. The technology of LNG tank zero emission commissioning has great reference value for the tank cooling of new storage tanks or receiving stations with the capacity of gasification and outward transportation. At the same time, "top intake bottom exhaust" nitrogen replacement, "BOG + LNG" cooling process has certain enlightenment for optimizing LNG tank design.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - Research and Application of Commissioning Technology for LNG Tank Zero Discharge Commissioning
AU  - Kong Linghai
AU  - Li Wenfeng
AU  - Deng Wenyuan
AU  - Tong Wenlong
Y1  - 2018/10/12
PY  - 2018
N1  - https://doi.org/10.11648/j.ogce.20180606.13
DO  - 10.11648/j.ogce.20180606.13
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 142
EP  - 149
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20180606.13
AB  - Before cooling, the LNG tank is filled with nitrogen. During the test run, the tank will be gradually cooled from normal temperature to - 162 C. A large amount of BOG with high nitrogen content will be discharged to the torch in a short time, resulting in a great waste of resources. This paper discusses the difficulty of BOG recovery in LNG tank cooling by studying the conventional methods of LNG tank commissioning. Full nitrogen replacement and "BOG+LNG" tank cooling process are adopted before commissioning. The utilization efficiency of cold energy in receiving station is improved, the flow rate of BOG in receiving station is reduced, and the B in cooling process of LNG tank is realized. BOG zero emissions. The results showed that: (1) nitrogen in LNG tank could be fully replaced by "top intake and bottom exhaust" replacement method; (2) BOG + LNG cooling process could cool the tank, and effectively reduce the BOG flow rate in the cooling process of LNG tank to meet the processing capacity of receiving station and realize zero BOG emission in the cooling process of LNG tank. The technology of LNG tank zero emission commissioning has great reference value for the tank cooling of new storage tanks or receiving stations with the capacity of gasification and outward transportation. At the same time, "top intake bottom exhaust" nitrogen replacement, "BOG + LNG" cooling process has certain enlightenment for optimizing LNG tank design.
VL  - 6
IS  - 6
ER  -

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