Compact Intermediate Fluid Vaporizer

Abstract

A compact intermediate fluid vaporizer, characterized in that it is composed of three parts, the first part is heat exchanged by heat source fluid and intermediate heat transfer fluid to evaporate the intermediate heat transfer fluid, that is, the intermediate heat transfer fluid evaporation section E1 , is realized by the second heat source tube bundle 13; the second part is heat exchanged by the intermediate heat transfer fluid and LNG, the intermediate heat transfer fluid is condensed, and the LNG is gasified, that is, the gasification section E2 is realized by the LNG tube bundle 2; The third part is the heat exchange between the gasified natural gas and the heat source fluid, and the natural gas is superheated to a certain required temperature for output, that is, the overheating section E3 is realized by the first heat source tube bundle 11 . The three parts are connected by special-shaped pipe box (7). The invention has the advantages of compact structure, small occupied area, high gasification efficiency, good stability, easy realization of large-scale, and is suitable for LNG gasification in sloshing environments such as sea, river, river and lake.

Description

technical field [0001] The present invention relates to a liquefied natural gas (LNG) gasification device, especially a gasifier that can be used not only on land but also on a swaying ship, specifically a compact intermediate fluid type gasifier . Background technique [0002] At present, the intermediate fluid gasifier is a heat exchanger mainly used for gasifying low-temperature liquids such as LNG. The heat transfer fluid method avoids the freezing problem of the heat source fluid, and usually uses media such as propane, isobutane, Freon or ammonia as the intermediate heat transfer fluid. The gasifier is mainly divided into three parts. The first part is heat exchanged by heat source fluid and intermediate heat transfer fluid to evaporate the intermediate heat transfer fluid; the second part is heat exchanged by intermediate heat transfer fluid and LNG, and the intermediate heat transfer fluid The LNG is condensed, and the LNG is gasified; the third part is the heat ex...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing intermediate fluid type gasifier has a large footprint and is not suitable for installation on sloshing places such as ships, and to design a gasifier with good gasification effect, compact structure, and suitable for installation on ships, etc. Compact intermediate fluid type gasifier for rocking sites

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