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ACTIVE MAGNETIC REGENERATIVE LIQUEFIER USING PROCESS GAS PRE-COOLING FROM BYPASS FLOW OF HEAT TRANSFER FLUID

United States Patent Application

20170241706
A1
View the Complete Application at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A process for liquefying a process gas comprising: introducing a heat transfer fluid into an active magnetic regenerative refrigerator apparatus that comprises (i) a high magnetic field section in which the heat transfer fluid flows from a cold side to a hot side through at least one magnetized bed of at least one magnetic refrigerant, (ii) a first no heat transfer fluid flow section in which the bed is demagnetized, (iii) a low magnetic or demagnetized field section in which the heat transfer fluid flows from a hot side to a cold side through the demagnetized bed, and (iv) a second no heat transfer fluid flow section in which the bed is magnetized; continuously diverting a bypass portion of the heat transfer fluid from the cold side of the low magnetic or demagnetized field section into a bypass flow heat exchanger at a first cold inlet temperature; and continuously introducing the process gas into the bypass flow heat exchanger at a first hot inlet temperature and discharging the process gas or liquid from the bypass flow heat exchanger at a first cold exit temperature; wherein the temperature difference between bypass heat transfer first cold inlet temperature and the process gas first cold exit temperature is 1 to 5 K.
Holladay, Jamie D. (Richland, WA), Meinhardt, Kerry D. (Kennewick, WA), Polikarpov, Evgueni (Richland, WA), Thomsen, Edwin C. (Richland, WA), Barclay, John (Richland, WA), Cui, Jun (Richland, WA)
Battelle Memorial Institute (Richland WA)
15/ 438,529
February 21, 2017
ACKNOWLEDGEMENT OF GOVERNMENT SUPPORT [0002] This invention was made with government support under Contract No. DE-AC05-76RL01830 awarded by the U.S. Department of Energy. The government has certain rights in the invention.