Patents Assigned to Merichem Company
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Publication number: 20230416088Abstract: 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: ApplicationFiled: June 28, 2022Publication date: December 28, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand, Jeff Gomach
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Publication number: 20230416420Abstract: 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: ApplicationFiled: June 28, 2022Publication date: December 28, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11826741Abstract: 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: GrantFiled: November 10, 2022Date of Patent: November 28, 2023Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11826736Abstract: 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: GrantFiled: November 29, 2021Date of Patent: November 28, 2023Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20230166243Abstract: 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: ApplicationFiled: November 29, 2021Publication date: June 1, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20230086959Abstract: 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: ApplicationFiled: November 10, 2022Publication date: March 23, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11547967Abstract: 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: GrantFiled: June 17, 2021Date of Patent: January 10, 2023Assignee: MERICHEM COMPANYInventors: Baisheng Zou, Jeffrey B. Gomach, David Jackson
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Patent number: 11524283Abstract: 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: GrantFiled: December 21, 2020Date of Patent: December 13, 2022Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11517889Abstract: 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: GrantFiled: December 21, 2020Date of Patent: December 6, 2022Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20220193647Abstract: 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: ApplicationFiled: December 21, 2020Publication date: June 23, 2022Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20220193646Abstract: 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: ApplicationFiled: December 21, 2020Publication date: June 23, 2022Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11339334Abstract: 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: GrantFiled: February 6, 2020Date of Patent: May 24, 2022Assignee: Merichem CompanyInventors: Jeffrey Bruce Gomach, John Jagger, Baisheng Zou, James McGehee
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Patent number: 11248175Abstract: 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: GrantFiled: November 4, 2020Date of Patent: February 15, 2022Assignee: MERICHEM COMPANYInventors: James F. McGehee, Jeffrey B. Gomach, Baisheng Zou
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Publication number: 20210246375Abstract: 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: ApplicationFiled: February 6, 2020Publication date: August 12, 2021Applicant: Merichem CompanyInventors: Jeffrey Bruce Gomach, John Jagger, Baisheng Zou, James McGehee
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Patent number: 11072746Abstract: 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: GrantFiled: July 1, 2020Date of Patent: July 27, 2021Assignee: MERICHEM COMPANYInventors: Preshit Gawade, Jeffrey Bruce Gomach, E. Cole Nelson, David Jackson, K. Michael Hardy
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Patent number: 10974190Abstract: 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: GrantFiled: April 21, 2020Date of Patent: April 13, 2021Assignee: MERICHEM COMPANYInventors: David Jackson, Jeffrey Bruce Gomach, Michael Hardy
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Patent number: 10946309Abstract: 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: GrantFiled: September 23, 2019Date of Patent: March 16, 2021Assignee: Merichem CompanyInventors: John Jagger, Chaitanya Sathaiah Vudutha, Raj Nagarajan
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Patent number: 10858597Abstract: 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: GrantFiled: March 20, 2020Date of Patent: December 8, 2020Assignee: MERICHEM COMPANYInventors: James F. McGehee, Jeffrey B. Gomach, Baisheng Zou
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Patent number: 10787614Abstract: 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: GrantFiled: October 15, 2018Date of Patent: September 29, 2020Assignee: MERICHEM COMPANYInventors: Preshit Gawade, Jeffrey Bruce Gomach, E. Cole Nelson, David Jackson, K. Michael Hardy
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Publication number: 20200171408Abstract: 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: ApplicationFiled: September 23, 2019Publication date: June 4, 2020Applicant: Merichem CompanyInventors: John Jagger, Chaitanya Sathaiah Vudutha, Raj Nagarajan