Method for making low carbon intensity hydrogen

    公开(公告)号:US11807530B2

    公开(公告)日:2023-11-07

    申请号:US18162950

    申请日:2023-02-01

    Inventor: Brian Foody

    Abstract: The present disclosure provides a method for reducing the carbon intensity of hydrogen by replacing, at a hydrogen production facility, a fraction of a non-renewable gaseous feedstock with a biomethane feedstock, wherein the non-renewable gaseous feedstock replaced is (a) a feedstock fed to methane reforming and/or (b) a feedstock used to generate heat for the reforming in the hydrogen production, and wherein the fraction of the non-renewable gaseous feedstock replaced by the biomethane feedstock is less than 50% and is at least r defined by Equation A herein. The disclosed process for reducing the carbon intensity of hydrogen is designed to reduce greenhouse gas (GHG) emissions and mitigate climate change. The biomethane feedstock in some examples has a carbon intensity (CI) value within a range that is between 15 g CO2-eq/MJ and −500 g CO2 eq/MJ.

    METHOD FOR MAKING LOW CARBON INTENSITY HYDROGEN

    公开(公告)号:US20230322550A1

    公开(公告)日:2023-10-12

    申请号:US18162950

    申请日:2023-02-01

    Inventor: Brian Foody

    Abstract: The present disclosure provides a method for reducing the carbon intensity of hydrogen by replacing, at a hydrogen production facility, a fraction of a non-renewable gaseous feedstock with a biomethane feedstock, wherein the non-renewable gaseous feedstock replaced is (a) a feedstock fed to methane reforming and/or (b) a feedstock used to generate heat for the reforming in the hydrogen production, and wherein the fraction of the non-renewable gaseous feedstock replaced by the biomethane feedstock is less than 50% and is at least r defined by Equation A herein. The disclosed process for reducing the carbon intensity of hydrogen is designed to reduce greenhouse gas (GHG) emissions and mitigate climate change. The biomethane feedstock in some examples has a carbon intensity (CI) value within a range that is between 15 g CO2 eq/MJ and −500 g CO2 eq/MJ.

    METHOD AND SYSTEM FOR PRODUCING A FUEL FROM BIOGAS

    公开(公告)号:US20210155864A1

    公开(公告)日:2021-05-27

    申请号:US17142537

    申请日:2021-01-06

    Abstract: A method for providing a fuel includes providing biogas from a plurality of biogas sources, the biogas from each biogas source produced in a process comprising filling a vessel with raw biogas or partially purified biogas to a pressure of at least 1500 psig and transporting the filled vessel to a centralized processing facility by vehicle. A fuel is produced in a fuel production process that includes feeding the biogas transported to the centralized processing facility to a biogas upgrading system that is configured to provide a carbon dioxide removed from the biogas. The removed carbon dioxide is provided for transport by vehicle and/or pipeline and/or sequestered to offset greenhouse gas emissions attributed to compressing the biogas for transport.

    Pretreatment of lignocellulosic biomass with sulfur dioxide and/or sulfurous acid

    公开(公告)号:US10655149B2

    公开(公告)日:2020-05-19

    申请号:US16076457

    申请日:2016-09-16

    Abstract: A process for hydrolyzing lignocellulosic biomass includes feeding lignocellulosic biomass into a pretreatment reactor, wherein the pretreatment reactor has a headspace charged with sulfur dioxide previously used in the pretreatment of lignocellulosic biomass. In addition, acid comprising sulfur dioxide and/or sulfurous acid is fed into the pretreatment reactor (e.g., with the lignocellulosic biomass, separate from the lignocellulosic biomass, or a combination thereof) and the lignocellulosic biomass is heated. As the pretreated lignocellulosic biomass is discharged from the pretreatment reactor, at least a portion of the sulfur dioxide used in the pretreatment is retained in the headspace.

    PROCESS FOR PRODUCING FUEL USING THREE FERMENTATIONS

    公开(公告)号:US20190144895A1

    公开(公告)日:2019-05-16

    申请号:US16244756

    申请日:2019-01-10

    Abstract: A process for forming a fuel or a fuel intermediate using three fermentations includes treating a feedstock to obtain a fermentable carbohydrate, conducting a first fermentation to ferment the fermentable carbohydrate to fermentation product, obtaining biogas produced from a second fermentation that includes anaerobic digestion, and conducting a third fermentation to ferment a gas to produce fermentation product, where the gas contains one or more components obtained or derived from the biogas. An aqueous stream containing fermentation product produced in the third fermentation is used within the process.

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