Marine VOC and BOG comprehensive liquefaction system and method

A marine re-liquefaction technology, applied in the comprehensive liquefaction system and its liquefaction field, can solve the problems of high power consumption and low energy efficiency, and achieve the effects of improving liquefaction recovery rate, reducing operating energy consumption, and system reliability

Active Publication Date: 2020-05-12
镇江市振兴海洋船舶重工有限公司
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  • Abstract
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Problems solved by technology

The biggest disadvantage of the Stirling refrigerator is high power consumption and low energy efficiency

Method used

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  • Marine VOC and BOG comprehensive liquefaction system and method
  • Marine VOC and BOG comprehensive liquefaction system and method

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Embodiment Construction

[0033] In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Such as figure 1 Shown: a marine VOC, BOG comprehensive liquefaction system, including four circulation systems, namely, VOC reliquefaction circulation system, refrigeration circulation system with single working substance, two-stage and double refrigeration temperature, Stirling refrigeration circulation system, and BOG reliquefaction circulation system system, wherein the VOC reliquefaction cycle system includes a cargo oil tank 101, a VOC compressor 102, a first heat exchanger 103, a first gas-liquid separator 104, a drying filter 105, a second heat exchanger 106, a second Two gas-liquid separators 107, the 3rd heat exchanger 108, the 3rd gas-liquid separator 109, the 4th heat exchanger 110, the 4th gas-liquid separat...

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Abstract

The invention discloses a marine VOC and BOG comprehensive liquefaction system. The marine VOC and BOG comprehensive liquefaction system comprises a VOC reliquefaction circulation system, a single-working-medium double-stage double-refrigeration-temperature refrigeration circulation system, a Stirling refrigeration circulation system and a BOG reliquefaction circulation system, and the VOC reliquefaction circulation system is connected with a compression refrigeration circulation system through a first heat exchanger and a second heat exchanger, and is connected with the Stirling refrigerationcirculation system through a fourth heat exchanger; and the BOG reliquefaction circulating system is connected with the Stirling refrigeration circulation system through a fifth heat exchanger, and is connected with a seawater cooling circulation system in the Stirling refrigeration circulation system. According to the marine VOC and BOG comprehensive liquefaction system, VOC reliquefaction and BOG reliquefaction are combined, comprehensive reliquefaction of VOC and BOG is achieved by means of a single-working-medium double-stage double-refrigeration-temperature compression type refrigerationsystem and a Stirling refrigeration marine VOC and BOG comprehensive liquefaction method, the problem of high energy consumption of a Stirling refrigerator is solved, the two-stage double-refrigeration-temperature grading liquefaction of the VOC is realized, and the good refrigerating capacity adjusting capability is realized.

Description

technical field [0001] The invention relates to the reliquefaction of gas generated during storage and transportation of crude oil and LNG by ships, in particular to a comprehensive liquefaction system and a liquefaction method for VOC reliquefaction and BOG reliquefaction. Background technique [0002] Crude oil is an important energy source, most of which are concentrated in the Middle East. Most countries in Europe, America and Asia need to import crude oil to meet their energy supply needs. Crude oil transport ships or tankers are the main transportation means of crude oil. Crude oil is a mixture of various liquid hydrocarbons, and the hydrocarbon components are highly volatile, so a large amount of VOC (volatile organic compounds, volatile organic compounds) gas will be generated during crude oil storage, transportation and loading and unloading, and the direct emission of VOC gas It will not only cause a lot of energy waste, but also pollute the environment. At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J1/02
CPCF25J1/0022F25J1/0025F25J1/0228F25J1/0245F25J1/004F25J1/0052F25J1/0087F25J1/0095F25J1/0204F25J1/0225F25J1/0227F25J1/0236F25J2215/62F25J2215/64F25J2215/66F25J2220/62F25J2220/64F25J2230/30F25J2270/908
Inventor 沈九兵严思远陈育平郭霆卢道华孔祥雷
Owner 镇江市振兴海洋船舶重工有限公司
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