High-stability gasification method for LG

Abstract

A high-stability gasification method for LG is related to a gasification part, a heat exchanger, a constant-temperature water tank and a circulating pump which are connected in sequence through a heat exchange medium pipeline, wherein a heat exchange medium passes through the heat exchanger, the constant-temperature water tank, the circulating pump and the gasification part in sequence to form constant-flow closed circulation, heat exchange is conducted between the heat exchange medium flowing out of the gasification part and a heating medium introduced from the outside in the heat exchanger, the heated heat exchange medium is fed into the constant-temperature water tank after absorbing heat and obtains a constant temperature in the constant-temperature water tank so that accurate temperature control can be conducted on the heat exchange medium entering the gasification part, the heat exchange medium in the constant-temperature water tank is directly input into the gasification part through the circulating pump in a constant-temperature and constant-flow mode, and LG is heated by the heat exchange medium in the gasification part so as to be gasified stably. By the adoption of the method, constant temperature and constant flow of the heat exchange medium entering the gasification part are guaranteed, so that gasification stability of LG is improved, LG leakage risks are reduced, and system safety is improved.

Description

technical field [0001] The invention relates to a gasification method for liquid substances, more specifically, a high-stability gasification method for liquefied gas (LG) based on a heat exchange medium constant temperature and constant flow closed cycle, which belongs to thermal technology field. Background technique [0002] With the development of international trade and shipping, the exhaust emissions of marine diesel engines fueled by traditional petroleum products are increasingly polluting the global environment. For this reason, the International Maritime Organization (IMO) has passed the "International Convention for the Prevention of Air Pollution from Ships", The emission requirements for ships operating at sea have been further improved. For this reason, WARTSILA and MANB&WDiesel Inc. have both launched dual-fuel medium-speed diesel engines and dual-fuel low-speed diesel engines. The characteristics of this type of diesel engine are that they can use both tradi...

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Problems solved by technology

However, the temperature and flow rate of the heat exchange medium just heated by the heat exchanger are not stable. If it directly enters the gasification part, the temperature and flow fluctuations of the heat exchange medium (water glycol solution) will affect the LG gas in the gasification part. If the stability of the gasification is not enough, it may lead to large fluctuations in the temperature and flow rate of the gaseous LG gas provided by the diesel engine, which cannot reach the temperature and flow rate required by the diesel engine, thereby affecting the stability of the diesel engine operation, and even causing the failure of the diesel engine operation

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