Air Products and Chemicals, Inc.

Shubhra Jyoti Bhadra

Roger Dean Whitley

Timothy Christopher Golden

Jeffrey Raymond Hufton

Erin Marie Sorensen

Timothy C Golden

William Jack Casteel, Jr

Mohammad Ali Kalbassi

Robert Quinn

Glenn Paul Wagner

Paul Anthony Wright

Aaron Raymond Scott

Garret Chi-Ho Lau

Maulik R Shelat

Kamlesh Ghodasara

Magdalena M Lozinska

William Jack Casteel

Paul A Wright

Paul Higginbotham

Donn Michael Herron

Edward Landis Weist, Jr

Dingjun Wu

David Ross Graham

Jeffrey Kloosterman

Andrew David Wright

Jin Cao

Qiao Zhao

Jason Michael Ploeger

Erdem Arslan

Garret C Lau

Xue Mei Liu

Cory E Sanderson

Quan Min Shao

Michael Jamie McKerrow

Yong Cao

Jinzhong Liu

Vishrut Garg

Elliott L Bruce

Garrett Chi-Ho Lau

Fabrice Amy

Michael Jamie Mckerrow

Paula A Wright

William Jack Casteel Jr

A hydrogen feed stream comprising one or more impurities selected from the group consisting of nitrogen, argon, methane, carbon monoxide, carbon dioxide, oxygen, and water, is purified using a cryogenic temperature swing adsorption (CTSA) process with high overall recovery of hydrogen. The waste gas from regenerating the CTSA may be used to improve the performance of upstream hydrogen processing steps.

Method for producing high purity hydrogen

A hydrogen feed stream comprising one or more impurities selected from the group consisting of nitrogen, argon, methane, carbon monoxide, carbon dioxide, oxygen, and water, is contacted with liquid hydrogen in a cryogenic wash column (CWC) process that produces pure hydrogen with high overall recovery. The waste liquid stream leaving the CWC may be used to improve the performance of upstream hydrogen processing steps.

A hydrogen feed stream comprising oxygen and one or more impurities selected from the group consisting of nitrogen, argon, methane, carbon monoxide, carbon dioxide, and water, is purified using a cryogenic temperature swing adsorption (CTSA) process with high overall recovery of hydrogen. The CTSA is regenerated using an inert gas to prevent an explosive mixture of hydrogen and oxygen from occurring.

Process and apparatus for producing helium, neon, or argon product gas using an adsorption separation unit having minimal dead end volumes. A purification unit receives a stream enriched in helium, neon, or argon, and a stream is recycled from the purification unit back to the adsorption separation unit in a controlled manner to maintain the concentration of the helium, neon, or argon in the feed to the separation unit within a targeted range.

Separation process and apparatus for light noble gas

Disclosed herein are rapid cycle pressure swing adsorption (PSA) process for separating Ofrom Nand/or Ar. The processes use a carbon molecular sieve (CMS) adsorbent having an O/Nand/or O/Ar kinetic selectivity of at least 5 and an Oadsorption rate (1/s) of at least 0.2000 as determined by linear driving force model at 1 atma and 86&#xb0; F.

Carbon molecular sieve adsorbent

Disclosed herein are multi-bed rapid cycle pressure swing adsorption (RCPSA) processes for separating Ofrom Nand/or Ar, wherein the process utilizes at least five adsorption beds each comprising a kinetically selective adsorbent for Ohaving an Oadsorption rate (1/s) of at least 0.20 as determined by linear driving force model at 1 atma and 86&#xb0; F.

Multi-bed rapid cycle kinetic PSA

Disclosed herein is a stator plate for a rotary bed PSA apparatus that has an exhaust slot that has first and second sections for receiving blowdown and purge exhaust gas streams, the sections being separated by a flow restriction that restricts but does not full prevent gas flow between the sections, or that has separate exhaust slots for separately receiving the blowdown and purge exhaust gas streams. Also disclosed is pressure swing adsorption (PSA) apparatus including such a stator plate, and a rotary bed PSA process using such an apparatus.

Port separation for rotary bed PSA

Disclosed herein are novel RHO zeolites useful as kinetically selective adsorbents for oxygen and/or nitrogen. The adsorbents can be used in pressure swing adsorption processes for selectively adsorbing oxygen and/or nitrogen from feed streams such as an air stream or crude argon stream. Also disclosed are novel methods of preparing RHO zeolites, including in particular mixed-cation RHO zeolites.

RHO adsorbent compositions, methods of making and using them

Disclosed herein are new processes for adsorbing oxygen using adsorbent compositions comprising RHO zeolites kinetically selective for oxygen. The RHO zeolites can be used in pressure swing adsorption processes for separating oxygen from oxygen containing streams, such as for, but not limited to, purifying a crude argon feed stream or separating oxygen from an air feed stream.

Processes using improved RHO adsorbent compositions

Methods and apparatuses for separating COand sulfur-containing compounds from a synthesis gas obtained from gasification of a carbonaceous feedstock. The primary separating steps are performed using a sour pressure swing adsorption (SPSA) system, followed by an acid gas enrichment system and a sulfur removal unit. The SPSA system includes multiple pressure equalization steps and a rinse step using a rinse gas that is supplied from a source other than directly from one of the adsorber beds of the SPSA system.

Sour pressure swing adsorption process

Methods and systems for purifying argon from a crude argon stream are disclosed, employing pressure swing adsorption at cold temperatures from &#x2212;186&#xb0; C. to &#x2212;20&#xb0; C.; more preferably from &#x2212;150&#xb0; C. to &#x2212;50&#xb0; C.; and most preferably from &#x2212;130&#xb0; C. to &#x2212;80&#xb0; C. with oxygen-selective zeolite adsorbent. In some embodiments, the oxygen-selective zeolite adsorbent is a 4A zeolite, a chabazite, or a combination thereof.

Method for argon production via cold pressure swing adsorption

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Macungie, PA, United States of America

Shubhra Jyoti Bhadra