LNG optimum control reliquefaction system for recovering LNG low-temperature waste heat generated during LNG vaporization

A reliquefaction, cryogenic technology for gas/liquid distribution and storage, fixed-capacity gas storage tanks, container discharge methods, etc.

Active Publication Date: 2017-09-01
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  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned prior art is only applicable to areas that require a large amount of LNG (specifically, NG gas as gaseous LNG), and it is difficult to introduce the a

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  • LNG optimum control reliquefaction system for recovering LNG low-temperature waste heat generated during LNG vaporization
  • LNG optimum control reliquefaction system for recovering LNG low-temperature waste heat generated during LNG vaporization
  • LNG optimum control reliquefaction system for recovering LNG low-temperature waste heat generated during LNG vaporization

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[0017] Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that a person with general knowledge in the technical field of the present invention can easily implement it. However, the present invention can be implemented in various different ways and is not limited to the embodiments described herein. In addition, in order to clearly explain the present invention, parts that are not related to the description are omitted in the drawings, and similar parts are denoted by similar reference numerals throughout the specification.

[0018] Throughout the specification, when describing a certain part "includes" a certain component, if there is no special description to the contrary, it means that other components are not excluded, but other components may also be included.

[0019] The specific types of refrigerants above and below are only an example, and different types of refrigerants can be used according to ...

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Abstract

The invention relates to an LNG optimum control reliquefaction system for recovering LNG low-temperature waste heat generated during LNG vaporization. The present invention is configured to: supply gaseous LNG to a gaseous LNG consumer while allowing liquid LNG to discharge cold energy through a heat exchanger for a load of a cold energy supply unit for a warehouse, so as to supply a sufficient amount of the gaseous LNG within an LNG storage tank, thereby increasing the temperature of or vaporizing the liquid LNG; allow the LNG with an elevated temperature or vaporized to be supplied to a gaseous LNG consumer supply line, thereby expanding the cold energy use and dissemination of the LNG; and optimally control and reliquefy the flux of the liquid LNG and gaseous LNG, thereby economically recovering the low-temperature waste heat of the LNG generated during LNG vaporization.

Description

technical field [0001] The invention relates to an LNG optimum control reliquefaction system for recovering LNG low-temperature waste heat produced in the LNG gasification process. Background technique [0002] At present, LNG is used as green energy, and in order to use LNG, LNG bases with multiple LNG liquefied gas storage tanks are built on the coast. [0003] The LNG liquefied gas storage tank stores liquefied LNG gas, and in order to supply an appropriate amount of LNG gas to the required place, the liquefied gas is vaporized and then supplied to the required place (piping of city gas, etc.). [0004] In order to gasify LNG liquefied gas, gasifiers are generally used. Gasifiers are roughly divided into open-frame gasifiers and combustion-type gasifiers. The most economical open-frame gasifiers receive water (sea water) from the outside. By performing heat exchange, the liquid LNG undergoes a phase transition and is output in a gaseous state at normal temperature. [0...

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Application Information

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IPC IPC(8): F17C7/02F17C7/04F17C13/00
CPCF17C9/00F17C9/02F17C13/00F17C13/04F17C7/02F17C7/04F17C2221/033
Inventor 杨元敦李成春李东建李大镇
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