Praxair Technology, Inc.

Union Carbide Corporation

John Keller Howell

Dante Patrick Bonaquist

Michael James Lockett

Thomas John Bergman, Jr

Ravindra F Pahade

Kenneth Kai Wong

David R Thompson

John H Ziemer

Vijayaraghavan Srinivasan

James Philip Natwora, Jr

Mary Louise Markowski

A process for further purification of nitrogen gas, thereby producing ultra-high purity nitrogen which is substantially free of hydrogen, oxygen and carbon monoxide, wherein the nitrogen gas is contacted with a metal-containing adsorbent at a temperature of 150 K. or less.

Cryogenic system for producing ultra-high purity nitrogen

A cryogenic rectification system wherein a product boiler is incorporated into the primary heat exchanger without encountering boiling to dryness problems wherein liquid from the cryogenic rectification plant is processed in a phase separator upstream of the product boiler, and fluid from the product boiler is passed into the phase separator prior to recovery.

Cryogenic rectification system with integral product boiler

A cryogenic rectification method wherein liquid from a top condenser-reboiler is cleaned of higher boiling impurities by passage through an adsorbent bed and returned to the condenser-reboiler, wherein the flow back to the condenser-reboiler is driven by combination with density-reducing vapor.

Air separation process with improved reboiler liquid cleaning circuit

Growing community of inventors

Tonawanda, NY, United States of America

John Keller Howell