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AssigneeLanzaTech, Inc.
InventorsRichard Rosin, Jason Greene, Taylor Schulz
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The invention provides a process for producing a fermentable gas stream from a gas source that contains one or more constituent which may be harmful to the fermentation process. To produce the fermentable gas stream, the gas stream is passed through a specifically ordered series of removal modules. The removal modules remove and/or convert various constituents found in the gas stream which may have harmful effects on downstream removal modules and/or inhibitory effects on downstream gas fermenting microorganisms. At least a portion of the fermentable gas stream is preferably capable of being passed to a bioreactor, which contains gas fermenting microorganisms, without inhibiting the fermentation process.
A process for removing constituents from an input gas stream, comprising removing, from the input gas stream, particulates, tar, and or at least one component comprising chloride, dimethyl ether, and or acetaldehyde from the input gas stream, contacting the input gas stream with a catalyst to produce a fermentable gas stream, wherein the fermentable gas stream comprises less than 100 ppm oxygen, less than 1 ppm acetylene, and less than 1 ppm hydrogen cyanide, and wherein the catalyst comprises reduced metal copper supported on alumina, silica, titania, ceria, lanthana, carbon, silica-alumina, or zeolites.
Dependencies are inferred from the claim text.