Compact intermediate fluid type gasifier

Abstract

A compact intermediate fluid type gasifier is characterized in that the gasifier is composed of three parts; according to the first part, heat source fluid and intermediate heat transfer fluid exchange heat, and the intermediate heat transfer fluid is made to evaporate, namely, an evaporation section E1 of the intermediate heat transfer fluid is realized through a second heat source tube bundle 13; according to the second part, the intermediate heat transfer fluid and LNG exchange heat, the intermediate heat transfer fluid is condensed, and the LNG is gasified, namely, a gasifying section E2 is realized through an LNG tube bundle 2; according to the third part, the gasified natural gas and the heat source fluid exchange heat, and the natural gas is output for use after being superheated to a certain required temperature, namely, a superheating section E3 is realized through a first heat source tube bundle 11. The three parts are communicated through a special-shaped channel (7). The compact intermediate fluid type gasifier is compact in structure, small in occupied space, high in gasifying efficiency, good in stability, capable of easily achieving enlargement, and suitable for LNG gasification on the sea and in rivers and lakes and other shaking environments.

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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