Integrated process for filtering constituents from a gas stream
AssigneeLanzaTech, Inc.
InventorsRichard Rosin, Jason Greene, Taylor Schulz
Life of this patent
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Abstract
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.
Claims20
A process for removing constituents from an input gas stream, comprising 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.
An apparatus comprising:
- a. a vessel having a vessel gas inlet and a vessel fermentable gas outlet wherein the vessel contains catalyst comprising copper supported on alumina, silica, titania, ceria, lanthana, carbon, silica-alumina, or zeolites wherein the copper is reduced metal copper or the catalyst is sulfided;
- and
- b. a bioreactor having a bioreactor gas inlet in fluid communication with the vessel fermentable gas outlet and a bioreactor fermentation broth output wherein the bioreactor comprises at least one C1-fixing microorganism.
A process for removing constituents from an input gas stream, comprising 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 copper supported on alumina, silica, titania, ceria, lanthana, carbon, silica-alumina, or zeolites and wherein the catalyst is sulfided.
Dependencies are inferred from the claim text.