Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Load children
F25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
Load children
F25J
LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
Load children
1/00
Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
Load children Filter patents View analytics View as hierarchy Open in page
F25J1/02
requiring the use of refrigeration, e.g. of helium or hydrogen; ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
Load children Filter patents View analytics View as hierarchy Open in page
F25J1/0243
Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
Load children Filter patents View analytics View as hierarchy Open in page
F25J1/0279
Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
Load children Filter patents View analytics View as hierarchy Open in page
F25J1/0285
Combination of different types of drivers mechanically coupled to the same refrigerant compressor, possibly split on multiple compressor casings
Load children Filter patents View analytics View as hierarchy Open in page

F25J1/0285

Systems and methods for LNG refrigeration and liquefaction
12313337 · 2025-05-27 · ·

A LNG liquefaction plant system includes concurrent power production, wherein the refrigeration content of the refrigerant or SMR is used to liquefy and sub-cool a natural gas stream in a cold box or cryogenic exchanger. For concurrent power production, the system uses waste heat from refrigerant compression to vaporize and superheat a waste heat working fluid that in turn drives a compressor for refrigerant compression. The refrigerant may be an external SMR or an internal LNG refrigerant working fluid expanded and compressed by a twin compander arrangement.

SYSTEMS AND METHODS FOR LNG REFRIGERATION AND LIQUEFACTION
20250257939 · 2025-08-14 ·

A LNG liquefaction plant system includes concurrent power production, wherein the refrigeration content of the refrigerant or SMR is used to liquefy and sub-cool a natural gas stream in a cold box or cryogenic exchanger. For concurrent power production, the system uses waste heat from refrigerant compression to vaporize and superheat a waste heat working fluid that in turn drives a compressor for refrigerant compression. The refrigerant may be an external SMR or an internal LNG refrigerant working fluid expanded and compressed by a twin compander arrangement.