RE-LIQUEFACTION PROCESS FOR STORING GAS

• Main Authors: JEON, SANG HEE, LEE, YEONG BEOM, LEE, SANG GYU, CHOE, KUN HYUNG, KIM, DONG HYUK
• Format: Patent
• Language: English; Korean
• Published: 24.09.2013
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; BLASTING; CHEMISTRY; COMBINED HEATING AND REFRIGERATION SYSTEMS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; METALLURGY; MIXTURES BY PRESSURE AND COLD TREATMENT; NATURAL GAS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; REFRIGERATION OR COOLING; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; WEAPONS

PURPOSE: A reliquefaction method for stored liquid is provided to simplify a structure or operation by unused refrigerant, form a similar cycle to a refrigerant cycle by separating the part of a main stream and cool the main stream through the similar cycle, thereby increasing the efficiency of a process. CONSTITUTION: A reliquefaction method for stored liquid comprises: a first melt-flow step of inflowing a main stream to a first heat exchange area (161); a second melt-flow step of inflowing the main stream to a second heat exchange area (162) after a first compression step; a third melt-flow step of inflowing the main stream to the first heat exchange area after the second melt-flow step; a first separation step of separating the main stream into a first substream of a gas phase and a second substream of a liquid phase after the third melt-flow step; a fourth melt-flow step of inflowing the first substream to the first heat exchange area; a second separating step of separating the second substream into a third substream and a fourth substream; a first cooling step of cooling the main stream in the second heat exchange area by using the third substream; and a storage step of storing at least part of the fourth substream in the storage tank.