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System and method for compression, liquefaction and recovery of BOG in LNG filling station

A recovery system, compression recovery technology, applied in liquefaction, refrigeration and liquefaction, container filling methods, etc., can solve the problems of gas station system pressure rise, potential safety hazards, energy waste, etc., to achieve efficient recovery and reduce potential safety hazards , the effect of reducing energy consumption

Active Publication Date: 2016-06-01
JIANGSU DUBLE ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

BOG gas not only increases the pressure of the gas filling station system, but also brings greater safety hazards. In the end, this part of BOG gas has to be released safely, resulting in huge energy waste and economic losses.

Method used

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  • System and method for compression, liquefaction and recovery of BOG in LNG filling station
  • System and method for compression, liquefaction and recovery of BOG in LNG filling station
  • System and method for compression, liquefaction and recovery of BOG in LNG filling station

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0028] Such as Figure 1 to Figure 4As shown, the LNG filling station BOG compression liquefaction recovery system includes an LNG storage tank 1 for storing LNG liquid and a BOG buffer tank 2 for collecting BOG gas in the pipeline of the filling station; the LNG storage tank 1 and the The gas phase part of the BOG buffer tank 2 communicates with the shell side 38 of the primary heat exchange area 31 of the vacuum insul...

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Abstract

The invention relates to the technical field of overall station recovery for BOG generated by liquefied natural gas in LNG filling stations due to heat-loss gasification, specifically relates to a system and a method for compression, liquefaction and recovery of BOG in an LNG filling station, and particularly relates to an optimization design in a re-liquefaction system. According to the invention, a first-stage compressor and a vacuum heat-insulation three-in-one heat exchanger are driven by a heat-insulation expander; and the system and the method have the characteristics of being investment-saving, low in running expense, short in process flow, convenient for equipment skidding, and the like, and is quite suitable for being popularized in the LNG filling station.

Description

technical field [0001] The invention relates to the technical field of BOG recovery produced in LNG gas filling stations, in particular to a BOG compression liquefaction recovery system for LNG gas filling stations using an expansion compression integrated machine and a vacuum insulation trinity spiral baffle tube heat exchanger, and A method of recovering BOG using the system. Background technique [0002] With the advent of the "post-oil era", the global energy center is rapidly shifting to more efficient and environmentally friendly natural gas energy. As a national clean energy vehicle, LNG vehicles have developed by leaps and bounds in recent years. At the same time, LNG filling stations have also sprung up like mushrooms after a spring rain. At present, during the operation of LNG filling stations, due to harsh storage conditions and unadvanced design techniques, almost all filling stations are facing serious energy waste, the most prominent of which is the problem of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J5/00F17C13/00
CPCF25J1/0025F25J1/0035F25J1/004F25J1/0045F25J1/0202F25J1/0288F25J5/002F17C13/00
Inventor 李春生黄鹏黄莉付进秋黄雪孟卫强翟继军
Owner JIANGSU DUBLE ENG
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