Liquefied gas regasification device and regasification gas manufacturing method

Abstract

A liquefied gas regasification plant which can regasify liquefied gas by a shell-and-tube-type heat exchanger with a simple configuration by preheating the liquefied gas with a simple configuration is provided. The liquefied gas regasification plant includes a preheating heat exchanger (3) that preheats LNG flowing through a preheated flow (3a) by gasification gas flowing through a preheating flow (3b), and a first shell-and-tube-type heat exchanger (5) that regasifies the LNG preheated in the preheating heat exchanger (3) by seawater or fresh water, the gas regasified in the first shell-and-tube-type heat exchanger (5) being guided to the preheating flow (3b), the liquefied gas regasification plant further including a second shell-and-tube-type heat exchanger (7) that regasifies the LNG condensed through the preheating flow (3b) by seawater or fresh water.

Description

technical field [0001] The invention relates to a regasification device for regasifying liquefied gas such as LNG and a method for producing the regasification gas. Background technique [0002] A regasification device is used to regasify LNG (liquefied natural gas) stored in a tank and deliver it to the desired location. As such a regasification device, an open-type vaporizer (ORV: Open-Rack-type Vaporizer) system is often used (for example, refer to the following Patent Document 1). In this ORV system, seawater is used as a heat source, and the seawater is sprayed in the air on the outer surfaces of a plurality of heat transfer tubes arranged in a plate shape to vaporize the LNG inside the heat transfer tubes. However, there are problems in that a large amount of seawater is required, and it is necessary to secure a heat transfer area for the seawater to flow, so it is difficult to downsize. Therefore, the ORV method is difficult to install on ships such as FSRU (Floatin...

AI Technical Summary

Problems solved by technology

However, there are the following problems: it requires a large amount of seawater, and it is necessary to ensure a heat transfer area for the flow of seawater, so it is difficult to miniaturize

Therefore, the ORV method is difficult to install on offshore floating bodies such as FSRU (Floating Storage and Regasification Unit) and FPSO (Floating Production Storage and Offloading) and LNG ships.

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