# US 10,245,549 B2 · Method and device for separating off electrolytes from synthesis gases > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,549 B2 - Document ID: US10245549B2 - Status: Granted - Kind: B2 - Application number: 15/245,476 - Filed: 2016-08-24 - Published: 2017-03-23 - Granted: 2019-04-02 - Earliest claimed: 2015-09-17 - Assignees: Linde Aktiengesellschaft - Applicants: Linde Aktiengesellschaft - Inventors: Ulvi Kerestecioglu; Jan-Peter Bohn - Web page: https://patentgrep.com/patent/US10245549B2 ## CPC - B01D 53/1406: {Multiple stage absorption} - B01D 53/14: by absorption - B01D 53/18: Absorbing units; Liquid distributors therefor (B01D3/16, B01D3/26, B01D3/30 take precedence; packing elements B01J19/30, B01J19/32) - B01D 2252/103: Water - B01D 2256/16: Hydrogen - B01D 2256/20: Carbon monoxide - B01D 2257/2045: Hydrochloric acid - B01D 2257/406: Ammonia - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A method and a device for separating off an electrolyte from a first synthesis gas and a second synthesis gas, each containing an electrolyte. The two synthesis gases are each subjected in a scrubbing column to a water scrubbing, in which a substantially electrolyte-free synthesis gas and also a scrubbing water loaded with an electrolyte that has been separated off are obtained. At least a part of the scrubbing water that was loaded with an electrolyte that has been separated off in the scrubbing of the first synthesis gas is used as scrubbing medium in the scrubbing of the second synthesis gas. ## Claims ### Claim 1 A method for separating off an electrolyte from a first synthesis gas and a second synthesis gas, each containing an electrolyte, said method comprising: subjecting each of the two synthesis gases to a water scrubbing in a first water scrubber column and a second water scrubber column, respectively, wherein a substantially electrolyte-free synthesis gas and a scrubbing water loaded with electrolyte are separated and obtained, wherein at least a part of the scrubbing water that is loaded with an electrolyte separated off in the scrubbing of the first synthesis gas is used as scrubbing medium for the scrubbing of the second synthesis gas, and wherein said electrolyte in said first and second synthesis gases is ammonia and/or hydrogen chloride. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first synthesis gas is scrubbed at a higher pressure than the second synthesis gas and scrubbing water that is loaded in the first water scrubber column is supplied to the second water scrubber column with the aid of the pressure difference. ### Claim 3 (depends on 1) The method according to claim 1, wherein scrubbing water that is loaded during the scrubbing of the first synthesis gas is fed with the aid of gravity to the second water scrubber column. ### Claim 4 (depends on 1) The method according to claim 1, wherein, for producing the first synthesis gas and the second synthesis gas, a synthesis gas stream is divided into a first and second substream, wherein the first substream forms the first synthesis gas, whereas the second synthesis gas is formed by converting the second substream by water-gas shift. ### Claim 5 (depends on 1) The method according to claim 1, wherein said first water scrubber column and said second water scrubber column are each positioned upstream of a methanol scrubber. ### Claim 6 (depends on 1) The method according to claim 1, wherein said first water scrubber column is positioned above said second water scrubber column. ### Claim 7 (depends on 1) The method according to claim 1, further comprising introducing non-loaded scrubbing water into the second water scrubber column. ### Claim 8 (depends on 7) The method according to claim 7, wherein said second water scrubber column contains column trays and said non-loaded scrubbing water is introduced into the second water scrubber column above the uppermost of said column trays, and, at a lower position, part of the scrubbing water loaded in the in the first water scrubber column is introduced, and wherein the remainder of the scrubbing water loaded in the first water scrubber column is combined directly with loaded scrubbing water removed from the second water scrubber column. ### Claim 9 A method for separating off an electrolyte from a first synthesis gas and a second synthesis gas, each containing an electrolyte, said method comprising: subjecting each of the two synthesis gases to a water scrubbing in a first water scrubber column and a second water scrubber column, respectively, wherein a substantially electrolyte-free synthesis gas and a scrubbing water loaded with electrolyte are separated and obtained, wherein at least a part of the scrubbing water that is loaded with an electrolyte separated off in the scrubbing of the first synthesis gas is used as scrubbing medium for the scrubbing of the second synthesis gas, and wherein said first water scrubber column and said second water scrubber column are each positioned upstream of a methanol scrubber.