Process and apparatus for providing a feedstock
AssigneeLanzaTech, Inc.
InventorRobert John Conrado
Life of this patent
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Abstract
The disclosure is directed to a process and an apparatus for providing a feedstock. A gaseous feed stream comprising at least one hydrocarbon is passed to a reforming unit followed by a water gas shift reaction zone to provide a first gaseous stream comprising H2, CO, and CO2. The first gaseous stream is fed a hydrogen separation zone to separate it into a hydrogen enriched stream and a second gaseous stream comprising CO, CO2 and H2. The second gaseous stream is fed to a CO2 to CO conversion system to produce a third gaseous stream comprising H2 and CO having a H2:CO molar ratio of less than 5:1. The third gaseous stream is fed as the feedstock for a gas fermentation unit to have increased stability and product selectivity.
Claims13
A process for providing a feedstock, comprising:
- a) providing a stream comprising methane to a methane reforming process to produce a first gaseous stream comprising H2, CO, and CO2;
- b) passing the first gaseous stream to a water gas shift (WGS) process to produce a second gaseous stream comprising a reduced amount of CO and an increased amount of H2 and CO2;
- c) passing the first second gaseous stream to a hydrogen separation zone to produce a hydrogen enriched stream and a third gaseous stream comprising CO, CO2 and a reduced amount of H2;
- d) passing the third gaseous stream to a reverse water gas shift process to produce a fourth gaseous stream having an increased amount of CO such that the H2 and CO are present in the fourth gaseous stream at a H2:CO molar ratio of 4:1 or less;
- and
- e) passing the third fourth gaseous stream to a gas fermentation unit.
A process for providing a feedstock, comprising:
- a) providing a stream comprising methane to a methane reforming process to produce a first gaseous stream comprising H2, CO, and CO2;
- b) passing the first gaseous stream to a water gas shift (WGS) process to produce a second gaseous stream comprising a reduced amount of CO and an increased amount of H2 and CO2;
- c) passing the second gaseous stream to a hydrogen separation zone to produce a hydrogen enriched stream and a third gaseous stream comprising CO, CO2 and a reduced amount of H2;
- d) separating at least a portion of the CO or CO2 in the third gaseous stream into a CO enriched gaseous stream or a CO2 enriched gaseous stream prior to passing the third gaseous stream to a reverse water gas shift process to convert CO2 to CO;
- e) producing a fourth gaseous stream using the reverse water gas shift process, the fourth gaseous stream having an increased amount of CO such that the H2 and CO are present in the fourth stream at a H2:CO molar ratio of less than 4:1;
- and
- f) passing the fourth gaseous stream to a gas fermentation unit.
Dependencies are inferred from the claim text.