Natural gas liquefaction process

摘要

The natural gas liquefaction process according to the present invention uses a single refrigeration cycle adopting a mixed refrigerant, and therefore has a simple structure and a compact system which is easy to operate. After the mixed refrigerant is divided into two refrigerant parts, the two refrigerant parts are not mixed with each other but go through condensation (cooling), expansion, heat exchange, and compression stages individually, and thus, optimal temperature and pressure conditions are applied to each of the divided refrigerant parts to increase efficiency of the liquefaction process.