Praxair Technology, Inc.

Bryan S Kalp

Raymond Francis Drnevich

Minish Mahendra Shah

Troy Michael Raybold

Andrew Warta

Gary Wayne Fenner

Raymond Francis Dmevich

Sameer Parvathikar

Troy M Raybold

Raymond F Drnevich

The present invention relates to a cold box cycle which allows for independent control of the heat supplied for reboilers associated with the separation columns. More specifically, the invention relates to the tight control of the hydrogen removal separation, thus avoiding the possibility of excess reboiling in this separation. Optimal reboiling also results in a lower temperature of the hydrogen depleted liquid from this separation. As this stream is used to provide a portion of the cooling at the cold end of the primary heat exchanger, lower temperatures facilitate cooling of the incoming syngas feed, reducing carbon monoxide (CO) losses into the crude hydrogen stream from the high pressure separator. Lower CO in the crude hydrogen allows for smaller hydrogen purification equipment.

Process and apparatus for producing carbon monoxide

The present invention relates to a method of improving the efficiency of an integrated hydrogen generation system by the introduction of a means to heat the PSA tail gas within the PSA surge tank.

Tail gas heating within PSA surge tank

Growing community of inventors

Grand Island, NY, United States of America

Bryan S Kalp