A TREATMENT SYSTEM OF LIQUEFIED GAS

摘要

The present invention relates to a treatment system of liquefied gas. The treatment system of liquefied gas comprise: a low-speed two-stroke low-pressure gas spray engine to supply thrust to an offshore floating structure; a liquefied gas storage tank to store liquefied gas; a pump to pressurize the liquefied gas stored in the liquefied gas storage tank; a heat exchanger to heat the liquefied gas received from the pump; an ethane storage tank to store ethane; a reliquefying device to reliquefy ethane evaporation gas produced in the ethane storage tank; and a mixer to mix flash gas produced by the reliquefying device and the liquefied gas supplied from the liquefied gas storage tank to supply mixed fuel to the low-speed two-stroke low-pressure gas spray engine. The treatment system of liquefied gas comprises a system which processes ethane or liquefied gas using the low-speed two-stroke low-pressure gas spray engine in the offshore floating structure to minimize power consumption and efficiently compress the ethane or the liquefied gas to maximize energy utilization. The low-speed two-stroke low-pressure gas spray engine requires a small installation area to increase usable space of the offshore floating structure. A simple structure of the system improves reliability of drive and reduces installation costs. Also, the treatment system of liquefied gas additionally comprises the mixer and a reliquefying system to reliquefy the ethane and mix the flash gas and LNG to use a mixture to minimize ethane loss and efficiently maintain a methane number.