# US 10,766,770 B2 · Systems and methods of production of hydrogen containing compounds using products of fuel cells > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,770 B2 - Document ID: US10766770B2 - Status: Granted - Kind: B2 - Application number: 16/302,559 - Filed: 2017-05-18 - Published: 2019-09-19 - Granted: 2020-09-08 - Earliest claimed: 2016-05-18 - Assignees: Grannus LLC - Applicants: Grannus, LLC - Inventors: James Kelly Merritt; Matthew Cox - Web page: https://patentgrep.com/patent/US10766770B2 ## CPC - C01B 3/025: Preparation or purification of gas mixtures for ammonia synthesis - C01B 3/36: using oxygen; using mixtures containing oxygen as gasifying agents - C01B 3/38: using catalysts - C01B 3/50: Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification - C01B 3/508: by using hydrogen storage media (reversible storage of hydrogen C01B3/0005) - C07C 273/04: from carbon dioxide and ammonia - C25B 5/00: Electrogenerative processes, i.e. processes for producing compounds in which electricity is generated simultaneously - H01M 8/04164: {by condensers, gas-liquid separators or filters} - H01M 8/04201: {Reactant storage and supply, e.g. means for feeding, pipes} - H01M 8/0606: with means for production of gaseous reactants - H01M 8/0618: {Reforming processes, e.g. autothermal, partial oxidation or steam reforming} - H01M 8/0668: Removal of carbon monoxide or carbon dioxide - C01B 2203/0415: Purification by absorption in liquids - C01B 2203/042: Purification by adsorption on solids - C01B 2203/043: Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration - C01B 2203/0445: Selective methanation - C01B 2203/06: Integration with other chemical processes - C01B 2203/067: the reforming process taking place in the fuel cell - C01B 2203/068: Ammonia synthesis - C01B 2203/1241: Natural gas or methane - C01B 2203/147: Three or more purification steps in series - C01B 2203/86: Carbon dioxide sequestration - C07C 1/12: from carbon dioxide with hydrogen - C07C 9/04: Methane (production by treatment of sewage C02F11/04; natural gas, synthetic natural gas C10L3/06) - Y02E 60/50: Fuel cells - Y02P 30/00: Technologies relating to oil refining and petrochemical industry - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS - C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract Disclosed herein are methods and systems for the production of hydrogen-containing compounds, such as ammonia and urea from a product stream of a fuel cell unit. The production of ammonia and optionally urea can also include a net power production. Alternatively, the hydrogen stream from the fuel cell unit can be directed to the production of synthetic hydrocarbons liquids. ## Claims ### Claim 1 A method for the production of ammonia from byproduct gases of a fuel cell process, the method comprising the steps of: supplying a hydrocarbon feedstock and oxygen to a fuel cell unit to produce a first product stream containing gasses of carbon dioxide and hydrogen; supplying the gaseous product stream containing carbon dioxide and hydrogen from the fuel cell to a first condenser to remove water and produce a second product stream containing substantially pure hydrogen and carbon dioxide as compared to the first product stream; supplying the second product stream to a carbon dioxide stripper to produce a first high purity hydrogen stream and a carbon dioxide stream, the carbon dioxide stripper being charged with a solvent suitable for extracting carbon dioxide, and the first high purity hydrogen stream containing minor amounts of inert gases and carbon dioxide; supplying the first high purity hydrogen stream to a pressure swine adsorption unit to produce a second high purity hydrogen stream; supplying the second high purity hydrogen stream from the pressure swing adsorption unit and nitrogen gas from an air separation unit to a second reactor containing a second catalyst to produce an ammonia product stream. ### Claim 2 (depends on 1) The method of claim 1, further comprising supplying the carbon dioxide stream from the carbon dioxide removal unit and the ammonia product stream from the second reactor to a third reactor to produce an urea product stream. ### Claim 3 (depends on 1) The method of claim 1, wherein the hydrocarbon feedstock is comprises methane. ### Claim 4 (depends on 1) The method of claim 1, wherein the hydrocarbon feedstock is comprises syngas. ### Claim 5 (depends on 1) The method of claim 1, further comprising: supplying air to the air separation unit to produce nitrogen and oxygen, wherein the nitrogen is supplied to the second reactor and the oxygen is supplied to the fuel cell unit. ### Claim 6 (depends on 1) The method of claim 1, further comprising the step of supplying the second high purity hydrogen stream from the pressure swing adsorption unit to a second condenser to remove any trace water present in the high purity hydrogen stream.