LNG Liquefaction with Dual Mixed Refrigerant (DMR)
LNG
Dual Mixed Refrigerant (DMR) process for LNG production using two separate closed-loop mixed refrigerant cycles: a warm cycle (ethane/propane/butane) precools the natural gas feed to 236 K in the first multi-stream heat exchanger, and a cold cycle (methane/ethane/propane/isobutane/nitrogen) subcools it to 109 K in a second heat exchanger, before a final JT expansion valve produces LNG at ~1 bar. Each refrigerant loop has its own compressor and aftercooler.
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