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LNG tank container BOG recovery system and recovery method

A tank container and recovery system technology, applied in the container filling method, container discharge method, packaging, etc., can solve the problems of aggravating the greenhouse effect and environmental pollution, and achieve the effects of high automation level, efficient recycling, and easy monitoring and control

Inactive Publication Date: 2020-09-22
郑志
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dispersion or direct discharge of BOG will cause environmental pollution and aggravate the greenhouse effect

Method used

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  • LNG tank container BOG recovery system and recovery method
  • LNG tank container BOG recovery system and recovery method
  • LNG tank container BOG recovery system and recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The present invention provides a BOG recovery system for an LNG tank container, which includes an LNG tank container 1, a hydrate reactor 8 sequentially connected to the LNG tank container 1, a three-phase separator 10, and a hydrate storage tank 12 and hydrate decomposition device 16;

[0047] The gas phase outlet of the LNG tank container 1 is connected to the hydrate reactor 8 through the low-temperature heat exchanger 4 and the compressor 5 in sequence;

[0048] Also includes a water tank 6, one end of the water tank 6 is connected to the hydration reactor 8 through the cryogenic liquid pump 7, and the other end of the water tank 6 is respectively connected to the three-phase separator 10 and the hydrate decomposition device 16, that is, the water tank The other end of 6 is connected in parallel with the three-phase separator 10 and the hydrate decomposition device 16, and the water tank 6 is connected with the additive storage tank 18 through the additive delivery ...

Embodiment 2

[0058] The present invention provides a BOG recovery system for an LNG tank container, which includes an LNG tank container 1, a hydrate reactor 8 sequentially connected to the LNG tank container 1, a three-phase separator 10, and a hydrate storage tank 12 and hydrate decomposition device 16;

[0059] The gas phase outlet of the LNG tank container 1 is connected to the hydrate reactor 8 through the low-temperature heat exchanger 4 and the compressor 5 in sequence;

[0060] Also includes a water tank 6, one end of the water tank 6 is connected to the hydration reactor 8 through the cryogenic liquid pump 7, and the other end of the water tank 6 is respectively connected to the three-phase separator 10 and the hydrate decomposition device 16, that is, the water tank The other end of 6 is connected in parallel with the three-phase separator 10 and the hydrate decomposition device 16, and the water tank 6 is connected with the additive storage tank 18 through the additive delivery ...

Embodiment 3

[0091] The difference between this embodiment and Embodiment 2 is that the liquid phase in the LNG tank container 1 is also connected to the low-temperature heat exchanger 4 , the compressor 5 and the hydrate reactor 8 sequentially through the plunger pump 21 .

[0092] In this embodiment: the BOG overpressure in the gas phase space in the LNG tank container 1 is released through the safety valve 2, and is pressurized and / or transported by the compressor 5 after passing through the flame arrester 3 and the low-temperature heat exchanger 4, and stored in the Additives such as surfactants and nanoparticles in the additive storage tank 18 are mixed with the water in the water tank 6 delivered by the cryogenic liquid pump 7 to form a solution, and the liquid phase of the LNG tank container 1 is delivered by the plunger pump 21, and the liquid phase is transferred through the cryogenic exchange process. Heater 4 enters the hydrate reactor 8 together with the low-temperature natural ...

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Abstract

The invention discloses an LNG tank container BOG recovery system. The LNG tank container BOG recovery system comprises an LNG tank container, and further comprises a hydrate reactor, a three-phase separator, a hydrate storage tank and a hydrate decomposition device which are sequentially connected with the LNG tank container; a gas-phase outlet of the LNG tank container is connected with the hydrate reactor through a low-temperature heat exchanger and a compressor in turn; and the LNG tank container BOG recovery system further comprises a water tank, one end of the water tank is connected with the hydrate reactor through a low-temperature liquid pump, the other end of the water tank is connected with the hydrate reactor and the hydrate decomposition device in parallel, and in addition, the water tank is connected with an additive storage tank through an additive delivery pump. According to the LNG tank container BOG recovery system, the automatic control and parameter real-time monitoring are easily achieved. The invention further relates to an LNG tank container BOG recovery method. The BOG cold energy and LNG cold energy are fully utilized, meanwhile the effective recovery, storage and transportation of BOG are achieved by an NGH technology, economy and safety and achieved, and the recovery effect is good.

Description

technical field [0001] The invention relates to the technical field of BOG recovery, in particular to a BOG recovery system and method for an LNG tank container. Background technique [0002] LNG is the English abbreviation of Liquefied Natural Gas. The main component is methane. LNG is colorless, odorless, non-toxic and non-corrosive. Its volume is about 1 / 625 of the same volume of gaseous natural gas. The weight of LNG is only about 45% of the same volume of water. The critical temperature is -162°C, and LNG is condensed into a liquid by cooling gaseous natural gas at normal pressure to -162°C. [0003] BOG is the English abbreviation of Boil Off Gas, which refers to the low-temperature liquid that is liquefied by pressurization below its critical temperature. It is difficult to be absolutely insulated from the environment and evaporated by absorbing external heat. Liquefied natural gas is easy to gasify at room temperature. Even under the condition of good insulation p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C9/02F17C6/00F17C13/00F17C13/04
CPCF17C9/02F17C6/00F17C13/00F17C13/04F17C2225/0192F17C2223/0192F17C2225/04F17C2227/0337
Inventor 郑志吕艳丽
Owner 郑志
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