Patents by Inventor Edward Landis Weist, Jr.

Edward Landis Weist, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8197580
    Abstract: Hydrogen sulfide is removed from a hydrogen rich gas stream using adsorbents having a low loss of carbon dioxide adsorption capacity upon sulfur loading including high purity silica gels, titania or highly cross-linked, non-chemically reactive resins. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 12, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jeffrey Raymond Hufton, Timothy Christopher Golden, Robin Joyce Maliszewskyj, Edward Landis Weist, Jr., Robert Quinn, Erin Marie Sorensen
  • Patent number: 8029603
    Abstract: A pressure swing adsorption cycle designed to reduce the variations in ozone concentration, and produce a higher average ozone concentration, in a product gas stream throughout the cycle. The cycle includes a relatively long air sweep stage and provides for the overlapping of the air sweep stage in two adsorber vessels. Effluent from an adsorber vessel in a feed rinse stage is routed to another adsorber vessel that is in an air sweep stage.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: October 4, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Edward Landis Weist, Jr.
  • Publication number: 20110154989
    Abstract: Hydrogen sulfide is removed from a hydrogen rich gas stream using adsorbents having a low loss of carbon dioxide adsorption capacity upon sulfur loading including high purity silica gels, titania or highly cross-linked, non-chemically reactive resins. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.
    Type: Application
    Filed: March 8, 2011
    Publication date: June 30, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Jeffrey Raymond Hufton, Timothy Christopher Golden, Robin Joyce Maliszewskyj, Edward Landis Weist, JR., Robert Quinn, Erin Marie Sorensen
  • Patent number: 7909913
    Abstract: Hydrogen sulfide is removed from a hydrogen rich gas stream using adsorbents having a low loss of carbon dioxide adsorption capacity upon sulfur loading including high purity silica gels, titania or highly cross-linked, non-chemically reactive resins. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: March 22, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jeffrey Raymond Hufton, Timothy Christopher Golden, Robin Joyce Maliszewskyj, Edward Landis Weist, Jr., Robert Quinn, Erin Marie Sorensen
  • Patent number: 7862645
    Abstract: Method for argon recovery that comprises (a) providing a feed gas mixture comprising argon and nitrogen; (b) contacting at least a portion of the feed gas mixture with a nitrogen-selective adsorbent in a cyclic pressure swing adsorption process and adsorbing at least a portion of the nitrogen on the adsorbent in a first pressure range above 100 psia to provide a purified argon product and an adsorbent comprising adsorbed nitrogen; and (c) desorbing the adsorbed nitrogen in one or more regeneration steps effected in a second pressure range between atmospheric pressure and a super-atmospheric pressure below any pressure in the first pressure range, inclusive; wherein the cyclic pressure swing adsorption process is effected at an average operating temperature of at least about 0° C.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: January 4, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Roger Dean Whitley, Edward Landis Weist, Jr., Annemarie Ott Weist, Steven Ray Auvil
  • Patent number: 7819947
    Abstract: Adsorption process for recovering ozone from a feed gas mixture containing at least ozone and oxygen comprising (a) introducing the feed gas mixture into a first end of an adsorber vessel containing a zeolite adsorbent and selectively adsorbing ozone on the adsorbent; (b) withdrawing from a second end of the vessel a stream of oxygen essentially free of ozone; (c) terminating the flow of the feed gas mixture, introducing a purge gas into the second end of the vessel, and withdrawing from the first end of the vessel an outlet gas mixture containing at least purge gas and desorbed ozone; and (d) introducing an additional component into the feed gas mixture and/or the purge gas and adsorbing the additional component on the zeolite adsorbent. The additional component when adsorbed reduces the decomposition of ozone that would occur in the absence of the additional component adsorbed on the zeolite adsorbent.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: October 26, 2010
    Assignee: Air Products and Chemical, Inc.
    Inventors: Annemarie Ott Weist, Edward Landis Weist, Jr.
  • Publication number: 20100187092
    Abstract: Helium is introduced as an additive to any of the oxygen streams introduced into an ozone generator, such as a dielectric discharge (cold plasma) ozone generator, where the effluent of the generator is directed to an adsorption process for separating the ozone from the oxygen. Also disclosed is an improved PSA cycle, which is designed to reduce the amount of make-up helium and oxygen required to sustain the ozone generation and recovery process.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 29, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Annemarie Ott Weist, Shailesh Pradeep Gangoli, Edward Landis Weist, JR.
  • Publication number: 20100189635
    Abstract: A pressure swing adsorption cycle designed to reduce the variations in ozone concentration, and produce a higher average ozone concentration, in a product gas stream throughout the cycle. The cycle includes a relatively long air sweep stage and provides for the overlapping of the air sweep stage in two adsorber vessels. Effluent from an adsorber vessel in a feed rinse stage is routed to another adsorber vessel that is in an air sweep stage.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 29, 2010
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventor: Edward Landis Weist, JR.
  • Patent number: 7695545
    Abstract: A process for selectively separating hydrogen from at least one more strongly adsorbable component in a plurality of adsorption beds to produce a hydrogen-rich product gas from a low hydrogen concentration feed with a high recovery rate. Each of the plurality of adsorption beds subjected to a repetitive cycle. The process comprises an adsorption step for producing the hydrogen-rich product from a feed gas mixture comprising 5% to 50% hydrogen, at least two pressure equalization by void space gas withdrawal steps, a provide purge step resulting in a first pressure decrease, a blowdown step resulting in a second pressure decrease, a purge step, at least two pressure equalization by void space gas introduction steps, and a repressurization step. The second pressure decrease is at least 2 times greater than the first pressure decrease.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: April 13, 2010
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Jr., Jeffrey Raymond Hufton, Paul Anthony Novosat
  • Publication number: 20100011955
    Abstract: Hydrogen sulfide is removed from a hydrogen rich gas stream using adsorbents having a low loss of carbon dioxide adsorption capacity upon sulfur loading including high purity silica gels, titania or highly cross-linked, non-chemically reactive resins. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 21, 2010
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Jeffrey Raymond Hufton, Timothy Christopher Golden, Robin Joyce Maliszewskyj, Edward Landis Weist, JR., Robert Quinn, Erin Marie Sorensen
  • Publication number: 20090199710
    Abstract: Adsorption process for recovering ozone from a feed gas mixture containing at least ozone and oxygen comprising (a) introducing the feed gas mixture into a first end of an adsorber vessel containing a zeolite adsorbent and selectively adsorbing ozone on the adsorbent; (b) withdrawing from a second end of the vessel a stream of oxygen essentially free of ozone; (c) terminating the flow of the feed gas mixture, introducing a purge gas into the second end of the vessel, and withdrawing from the first end of the vessel an outlet gas mixture containing at least purge gas and desorbed ozone; and (d) introducing an additional component into the feed gas mixture and/or the purge gas and adsorbing the additional component on the zeolite adsorbent. The additional component when adsorbed reduces the decomposition of ozone that would occur in the absence of the additional component adsorbed on the zeolite adsorbent.
    Type: Application
    Filed: February 12, 2008
    Publication date: August 13, 2009
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Annemarie Ott Weist, Edward Landis Weist, JR.
  • Publication number: 20090193967
    Abstract: Method for argon recovery that comprises (a) providing a feed gas mixture comprising argon and nitrogen; (b) contacting at least a portion of the feed gas mixture with a nitrogen-selective adsorbent in a cyclic pressure swing adsorption process and adsorbing at least a portion of the nitrogen on the adsorbent in a first pressure range above 100 psia to provide a purified argon product and an adsorbent comprising adsorbed nitrogen; and (c) desorbing the adsorbed nitrogen in one or more regeneration steps effected in a second pressure range between atmospheric pressure and a super-atmospheric pressure below any pressure in the first pressure range, inclusive; wherein the cyclic pressure swing adsorption process is effected at an average operating temperature of at least about 0° C.
    Type: Application
    Filed: February 1, 2008
    Publication date: August 6, 2009
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Roger Dean Whitley, Edward Landis Weist, JR., Annemarie Ott Weist, Steven Ray Auvil
  • Patent number: 7491260
    Abstract: Method of operating a pressure swing adsorption system having a plurality of parallel adsorber vessels and a plurality of valves and gas manifolds adapted to introduce gas into each adsorber vessel and withdraw gas from each adsorber vessel in a cyclic series of sequential process steps. A leaking valve may be identified by (1) determining a value of an operating parameter that is a function of the mass of gas provided to a receiving adsorber vessel or withdrawn from an adsorber vessel during a selected process step, portion of a process step, or series of process steps; (2) determining the deviation of the value of the operating parameter from a predetermined reference value; and (3) using the magnitude and direction of the deviation to determine whether any valves are leaking.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: February 17, 2009
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Blaine Edward Herb, Charles Franklin Watson, Edward Landis Weist, Jr., Theodore Michael Sabram, Kuo-Kuang Hsu, Winfried Stephen Hoglen
  • Patent number: 7404846
    Abstract: Method for the separation of a gas mixture comprising providing a PSA system with at least one adsorber vessel containing adsorbent material that is selective for the adsorption of carbon monoxide and nitrogen, passing a feed gas mixture containing at least hydrogen and carbon monoxide and optionally containing nitrogen through the adsorbent material in a feed step and withdrawing a purified hydrogen product from the adsorber vessel, wherein the feed step has a duration or feed time period of about 30 seconds or less. The adsorbent material is characterized by any of (1) a Henry's law constant for carbon monoxide between about 2.5 and about 5.5 (mmole/g)/atm; (2) a carbon monoxide heat of adsorption between about 6.0 and about 7.5 kcal/gmole; (3) a Henry's law constant for nitrogen greater than about 1.5 (mmole/g)/atm; and (4) a selectivity of carbon monoxide to nitrogen between about 5.0 and about 8.0.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: July 29, 2008
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Jr., Paul Anthony Novosat
  • Patent number: 7390350
    Abstract: Method for the separation of a gas mixture comprising providing a pressure swing adsorption system having a plurality of adsorber vessels, wherein each vessel has an inlet, an outlet, and a bed of particulate adsorbent material disposed therein. The adsorbent material is selective for the adsorption of one or more components from the gas mixture, and each bed of adsorbent material is characterized by a bed depth and by an average particle diameter less than about 1.3 mm. A feed step is carried out during a feed time period wherein the gas mixture is introduced into the adsorber vessel, one or more components are selectively adsorbed from the gas mixture, and a product gas is withdrawn from the adsorber vessel. The bed depth in feet times the dimensionless ratio of the empty bed residence time to the feed time period is less than about 4.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: June 24, 2008
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Edward Landis Weist, Jr., Daniel Patrick Zwilling, Timothy Christopher Golden
  • Patent number: 6814787
    Abstract: The present invention describes a pressure swing adsorption (PSA) apparatus and process for the production of purified hydrogen from a feed gas stream containing heavy hydrocarbons (i.e., hydrocarbons having at least six carbons). The apparatus comprises at least one bed containing at least three layers. The layered adsorption zone contains a feed end with a low surface area adsorbent (20 to 400 m2/g) which comprises 2 to 20% of the total bed length followed by a layer of an intermediate surface area adsorbent (425 to 800 m2/g) which comprises 25 to 40% of the total bed length and a final layer of high surface area adsorbent (825 to 2000 m2/g) which comprises 40 to 78% of the total bed length.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: November 9, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Jr.
  • Patent number: 6770390
    Abstract: The present invention is a method for production of a hydrogen-rich fuel gas compatible for a fuel cell, comprising; reforming a hydrocarbon-containing fuel to a CO-containing, hydrogen-rich reformate, converting CO in the reformate to CO2 and hydrogen by a catalyzed water-shift reaction, removing residual CO in the reformate by adsorption on a copper halide adsorbent, and passing the essentially CO-free reformate as a hydrogen-rich fuel gas to a fuel cell.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: August 3, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Jr.
  • Patent number: 6706857
    Abstract: In a process for the production of a polyolefin, an olefin monomer is polymerised said polyolefin and residual monomer is recovered. A gas stream comprising the monomer and nitrogen is subjected to a PSA process in which said monomer is adsorbed on a periodically regenerated silica gel or alumina adsorbent to recover a purified gas stream containing said olefin and a nitrogen rich stream containing no less than 99% nitrogen and containing no less than 50% of the nitrogen content of the gas feed to the PSA process.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: March 16, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Jr., Charles Henry Johnson
  • Patent number: 6605136
    Abstract: A pressure swing adsorption process which comprises introducing a feed gas mixture into an inlet of an adsorber vessel during a feed period, wherein the feed gas mixture contains a more strongly adsorbable component and a less strongly adsorbable component and the adsorber vessel contains a bed of adsorbent material which selectively adsorbs the more strongly adsorbable component, and withdrawing a product gas enriched in the less strongly adsorbable component from an outlet of the adsorber vessel during at least a portion of the feed period, wherein a dimensionless cycle-compensated mass transfer coefficient defined as K tfeedVads/Vfeed is maintained in the range of about 23 to about 250.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: August 12, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: David Ross Graham, Roger Dean Whitley, Robert Ling Chiang, Edward Landis Weist, Jr., Timothy Christopher Golden, Matthew James Labuda
  • Patent number: 6576043
    Abstract: A method for the separation of a gas mixture comprises (a) obtaining a feed gas mixture comprising nitrogen and at least one hydrocarbon having two to six carbon atoms; (b) introducing the feed gas mixture at a temperature of about 60° F. to about 105° F. into an adsorbent bed containing adsorbent material which selectively adsorbs the hydrocarbon, and withdrawing from the adsorbent bed an effluent gas enriched in nitrogen; (c) discontinuing the flow of the feed gas mixture into the adsorbent bed and depressurizing the adsorbent bed by withdrawing depressurization gas therefrom; (d) purging the adsorbent bed by introducing a purge gas into the bed and withdrawing therefrom an effluent gas comprising the hydrocarbon, wherein the purge gas contains nitrogen at a concentration higher than that of the nitrogen in the feed gas mixture; (e) pressurizing the adsorbent bed by introducing pressurization gas into the bed; and (f) repeating (b) through (e) in a cyclic manner.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: June 10, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Daniel Patrick Zwilling, Timothy Christopher Golden, Edward Landis Weist, Jr., Keith Alan Ludwig