Patents Assigned to Merichem Company
  • Publication number: 20230416088
    Abstract: A method may include: contacting a feed stream comprising carbonyl sulfide with an aqueous stream comprising water in the presence of a carbonyl sulfide hydrolysis catalyst, wherein the carbonyl sulfide hydrolysis catalyst comprises a solid support and a polyamine covalently bonded to the solid support; and hydrolyzing at least a portion of the carbonyl sulfide to produce at least hydrogen sulfide.
    Type: Application
    Filed: June 28, 2022
    Publication date: December 28, 2023
    Applicant: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand, Jeff Gomach
  • Publication number: 20230416420
    Abstract: An apparatus may include: a flow path defined by a conduit; and a functional polymer disposed in the conduit, wherein the functional polymer comprises a polymer and a macrocycle, wherein the macrocycle is grafted to the polymer by an amide bond formed between the macrocycle and the polymer.
    Type: Application
    Filed: June 28, 2022
    Publication date: December 28, 2023
    Applicant: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Patent number: 11826741
    Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: November 28, 2023
    Assignee: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Patent number: 11826736
    Abstract: A method of producing a catalytic carbon fiber may include: providing a carbon fiber and an aminated macrocycle, mixing the carbon fiber and the aminated macrocycle with a solvent; and reacting the carbon fiber and the aminated macrocycle to form an amide bond between the carbon fiber and the aminated macrocycle thereby forming the catalytic carbon fiber.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: November 28, 2023
    Assignee: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Publication number: 20230166243
    Abstract: A method of producing a catalytic carbon fiber may include: providing a carbon fiber and an aminated macrocycle, mixing the carbon fiber and the aminated macrocycle with a solvent; and reacting the carbon fiber and the aminated macrocycle to form an amide bond between the carbon fiber and the aminated macrocycle thereby forming the catalytic carbon fiber.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 1, 2023
    Applicant: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Publication number: 20230086959
    Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.
    Type: Application
    Filed: November 10, 2022
    Publication date: March 23, 2023
    Applicant: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Patent number: 11547967
    Abstract: A process is presented to treat a process gas stream containing hydrogen sulfide using a reverse jet absorber with a liquid treatment solution containing a chelated metal catalyst. A treat gas substantially free of the hydrogen sulfide is separated from a spent liquid treatment solution containing elemental sulfur which can then be regenerated in an oxidation vessel where it is contacted with an oxygen containing gas to convert the spent liquid treatment solution to a regenerated liquid treatment solution that can be recycled for introduction into the reverse jet absorber.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: January 10, 2023
    Assignee: MERICHEM COMPANY
    Inventors: Baisheng Zou, Jeffrey B. Gomach, David Jackson
  • Patent number: 11524283
    Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: December 13, 2022
    Assignee: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Patent number: 11517889
    Abstract: A fiber bundle contactor may include: a flow path defined by a conduit; a catalytic carbon fiber bundle disposed in the conduit; and an inlet allowing fluid flow into the flow path. A method may include: introducing into vessel a hydrocarbon comprising mercaptan sulfur, an aqueous caustic solution, and an oxidizer; reacting at least a portion of the mercaptan sulfur and the aqueous caustic solution to produce a mercaptide; and reacting the mercaptide and the oxidizer in the presence of a catalytic carbon fiber bundle to produce a disulfide oil.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: December 6, 2022
    Assignee: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Publication number: 20220193647
    Abstract: A fiber bundle contactor may include: a flow path defined by a conduit; a catalytic carbon fiber bundle disposed in the conduit; and an inlet allowing fluid flow into the flow path. A method may include: introducing into vessel a hydrocarbon comprising mercaptan sulfur, an aqueous caustic solution, and an oxidizer; reacting at least a portion of the mercaptan sulfur and the aqueous caustic solution to produce a mercaptide; and reacting the mercaptide and the oxidizer in the presence of a catalytic carbon fiber bundle to produce a disulfide oil.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 23, 2022
    Applicant: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Publication number: 20220193646
    Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 23, 2022
    Applicant: Merichem Company
    Inventors: Zhouyang Liu, Nachiketa Anand
  • Patent number: 11339334
    Abstract: A method may include: introducing a fluid comprising a first immiscible phase and a second immiscible phase into a contacting vessel comprising multiple contact stages: flowing the fluid through a first fiber bundle disposed in the contacting vessel; separating at least a portion of the first immiscible phase from the second immiscible phase; and flowing the separated portion of the first immiscible phase through a second fiber bundle disposed in the contacting vessel.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: May 24, 2022
    Assignee: Merichem Company
    Inventors: Jeffrey Bruce Gomach, John Jagger, Baisheng Zou, James McGehee
  • Patent number: 11248175
    Abstract: An improved contactor/separator process is presented where one or more stages of contact and separation is achieved by providing one or more shroud and disengagement device combinations within a vessel, where the disengagement device is connected to the top of the shroud that contains vertically hanging fibers. A liquid admixture of immiscible fluids is directed co-currently upward through the shroud at flooding velocity or greater, where all of the admixture exits the disengagement device through a coalescing material. Tray supports are used to stack additional shroud and disengagement combinations vertically within the vessel. Each tray allows less dense liquids exiting one disengagement device from a lower shroud and disengagement device combination to enter the bottom of a shroud of a shroud and disengagement device combination position vertically above the lower shroud and disengagement device combination.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: February 15, 2022
    Assignee: MERICHEM COMPANY
    Inventors: James F. McGehee, Jeffrey B. Gomach, Baisheng Zou
  • Publication number: 20210246375
    Abstract: A method may include: introducing a fluid comprising a first immiscible phase and a second immiscible phase into a contacting vessel comprising multiple contact stages: flowing the fluid through a first fiber bundle disposed in the contacting vessel; separating at least a portion of the first immiscible phase from the second immiscible phase; and flowing the separated portion of the first immiscible phase through a second fiber bundle disposed in the contacting vessel.
    Type: Application
    Filed: February 6, 2020
    Publication date: August 12, 2021
    Applicant: Merichem Company
    Inventors: Jeffrey Bruce Gomach, John Jagger, Baisheng Zou, James McGehee
  • Patent number: 11072746
    Abstract: A process is presented to treat a process stream containing a hydrocarbon (oil and/or gas) and hydrogen sulfide with a liquid treatment solution containing a sulfur dye catalyst. The process stream can be within a pipeline, wellbore, subsea pipeline or a wellhead that contains hydrogen sulfide where the liquid treatment solution is injected at a predetermined point to define a scavenger zone such that the sulfur dye catalyst in the liquid treatment solution causes the sulfide from the hydrogen sulfide to react with the catalyst. The hydrocarbon component is separated substantially free of the hydrogen sulfide from a spent treatment solution containing spent sulfur dye catalyst which can then be fed to an oxidation vessel where it is contacted with an oxygen containing gas causing the sulfide to oxidize to thiosulfate and converting the spent sulfur dye catalyst to regenerated sulfur dye catalyst.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: July 27, 2021
    Assignee: MERICHEM COMPANY
    Inventors: Preshit Gawade, Jeffrey Bruce Gomach, E. Cole Nelson, David Jackson, K. Michael Hardy
  • Patent number: 10974190
    Abstract: A process is presented where a feed stream containing a hydrogen sulfide and another feed component is introduced into an absorber that the feed stream flows upward from the bottom of the absorber and contacts a liquid treatment solution, where the liquid treatment solution contains a sulfur dye catalyst. The hydrogen sulfide is absorbed into the liquid treatment solution and converted into sulfide ions. The other feed component is removed from the absorber vessel substantially free of the hydrogen sulfide and a spent treatment solution is also removed from the absorber vessel and fed to an oxidation vessel where it is contacted with an oxygen containing gas causing the sulfide ions to oxidize to thiosulfate and converting the spent sulfur dye catalyst to regenerated sulfur dye catalyst. The thiosulfate is recovered, and the regenerated sulfur dye catalyst can be recycled as part of the liquid treatment solution.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: April 13, 2021
    Assignee: MERICHEM COMPANY
    Inventors: David Jackson, Jeffrey Bruce Gomach, Michael Hardy
  • Patent number: 10946309
    Abstract: A fiber bundle contactor may include a vessel including a first inlet; a second inlet; a mixing zone arranged in the vessel to receive a first fluid from the first inlet and a including fluid from the second inlet, wherein the mixing zone comprises a perforated plate assembly comprising a plate, a plurality of openings in the plate, and a plurality of riser pipes that extend from the plate and arranged to allow fluid flow through additional openings in the plate; and an extraction zone including a fiber bundle arranged in the vessel to receive the first fluid and the second fluid from the mixing zone.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: March 16, 2021
    Assignee: Merichem Company
    Inventors: John Jagger, Chaitanya Sathaiah Vudutha, Raj Nagarajan
  • Patent number: 10858597
    Abstract: An improved contactor/separator process is presented where one or more stages of contact and separation is achieved by providing one or more shroud and disengagement device combinations within a vessel, where the disengagement device is connected to the top of the shroud that contains vertically hanging fibers. A liquid admixture of immiscible fluids is directed co-currently upward through the shroud at flooding velocity or greater, where all of the admixture exits the disengagement device through a coalescing material. Tray supports are used to stack additional shroud and disengagement combinations vertically within the vessel. Each tray allows less dense liquids exiting one disengagement device from a lower shroud and disengagement device combination to enter the bottom of a shroud of a shroud and disengagement device combination position vertically above the lower shroud and disengagement device combination.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: December 8, 2020
    Assignee: MERICHEM COMPANY
    Inventors: James F. McGehee, Jeffrey B. Gomach, Baisheng Zou
  • Patent number: 10787614
    Abstract: A process is presented to treat a process stream containing a hydrocarbon (oil and/or gas) and hydrogen sulfide with a liquid treatment solution containing a sulfur dye catalyst. The process stream can be within a pipeline, wellbore, subsea pipeline or a wellhead that contains hydrogen sulfide where the liquid treatment solution is injected at a predetermined point to define a scavenger zone such that the sulfur dye catalyst in the liquid treatment solution causes the sulfide from the hydrogen sulfide to react with the catalyst. The hydrocarbon component is separated substantially free of the hydrogen sulfide from a spent treatment solution containing spent sulfur dye catalyst which can then be fed to an oxidation vessel where it is contacted with an oxygen containing gas causing the sulfide to oxidize to thiosulfate and converting the spent sulfur dye catalyst to regenerated sulfur dye catalyst.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: September 29, 2020
    Assignee: MERICHEM COMPANY
    Inventors: Preshit Gawade, Jeffrey Bruce Gomach, E. Cole Nelson, David Jackson, K. Michael Hardy
  • Publication number: 20200171408
    Abstract: A fiber bundle contactor may include a vessel including a first inlet; a second inlet; a mixing zone arranged in the vessel to receive a first fluid from the first inlet and a including fluid from the second inlet, wherein the mixing zone comprises a perforated plate assembly comprising a plate, a plurality of openings in the plate, and a plurality of riser pipes that extend from the plate and arranged to allow fluid flow through additional openings in the plate; and an extraction zone including a fiber bundle arranged in the vessel to receive the first fluid and the second fluid from the mixing zone.
    Type: Application
    Filed: September 23, 2019
    Publication date: June 4, 2020
    Applicant: Merichem Company
    Inventors: John Jagger, Chaitanya Sathaiah Vudutha, Raj Nagarajan