A kind of air reheating type lng vaporizer and its working method

Abstract

The invention discloses an air reheating type LNG vaporizer, which comprises a shell, in which a heat exchange core is fixedly arranged, and the upper right end surface of the shell is connected with a Venturi type fluid distributor and an LNG inlet through a flange. Pipe; the lower part is connected with a cold air outlet connector; the upper part of the left end face is connected with an NG outlet connector, and the lower part is connected with a Venturi type fluid distributor and a hot air inlet pipe through the flange. The invention solves the problems of the traditional LNG vaporizer such as the local resistance of the flow channel, the poor distribution of the inlet flow channel, etc., which bring about low heat exchange efficiency and the deterioration of the performance of the heat exchanger due to the flow resistance, and has a simple structure and is easy to process. It is easy to clean, which not only greatly increases the heat exchange efficiency of the heat exchanger, but also prolongs its service life.

Description

technical field [0001] The invention relates to the technical field of radiators, in particular to a novel air reheating type LNG vaporizer and a working method thereof. Background technique [0002] Natural gas (NG) is generally transported in the form of liquefied natural gas (LNG). However, in actual use, whether it is used for industrial energy demand or for civil gas, liquefied natural gas (LNG) often needs to be reheated to Use after gaseous state at room temperature. As an inexpensive low-grade heat source, air has the advantages of low operation and maintenance costs, easy access, and no energy and power consumption. It is widely used in LNG vaporizers used in base-load systems. [0003] There are also many problems in the heat transfer process of the LNG vaporizer, such as uneven distribution of fluid in the flow channel: due to the local resistance of the flow channel (such as the flow resistance of some channels is too high), the distribution of the inlet flow ch...

AI Technical Summary

Problems solved by technology

However, increasing the LNG mass flow rate will lead to a higher load and greater strength of the internal spoiler structure of the vaporizer. Therefore, the traditional LNG vaporizer that uses air as a heat source has the disadvantages of occupying a large area and high equipment cost per unit of vaporization capacity.

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