Liquefied natural gas (LNG) gasification device and method of offshore platform type receiving station

Abstract

The invention discloses a liquefied natural gas (LNG) gasification device and method of an offshore platform type receiving station. The LNG gasification device comprises an immersion combustion gasifier, and further comprises a circulating pump, an air heater, a waste heat boiler, a cooler, a gas generator and a low-temperature water-cooling air conditioning system, and LNG gasification is achieved in the immersion combustion gasifier. LNG is gasified by comprehensively utilizing discharge smoke waste heat of the gas generator, air energy and combustion heat of the natural gas, and the gasification device is especially suitable for the large offshore LNG receiving station in the northern region in China. Compared with a gasification system currently in use, the LNG gasification device hasthe advantages that investment is greatly lowered, energy is saved, ecological impact is small, the equipment domesticization degree is high, and operation is stable and reliable.

Description

technical field [0001] The invention relates to the gasification of liquefied natural gas (hereinafter referred to as LNG), in particular to an LNG gasification device and a gasification method of an ocean platform receiving station. Background technique [0002] The main component of liquefied natural gas is methane, which is recognized as the cleanest fossil energy on earth, colorless, odorless, non-toxic and non-corrosive. [0003] 1. Brief introduction of LNG gasifier at receiving station [0004] LNG is a low-temperature cryogenic medium, and its low temperature can reach below -162°C. Its gasification is an endothermic process that requires a large amount of heat. LNG vaporizers mainly include air bath type, water bath type, open frame type, intermediate medium type and submerged combustion type. The first two are used for gasification facilities of small-scale satellite stations (below 50t / h), and the latter three are large-scale LNG A common type of receiving stati...

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Problems solved by technology

[0015] From the perspective of operational reliability, since IFV needs to use seawater pumps to pump seawater, it is difficult to guarantee the reliability of seawater pump operation due to changes in tide levels, especially under harsh conditions such as typhoons; Marine organisms are abundant, it is easy to block seawater pipelines and vaporizers, and it is difficult to guarantee operational reliability

Once blocked, dredging on the offshore platform is very time-consuming, labor-intensive and expensive

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