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US 2023/0399570 A1Published application
Conversion of co2 to chemical energy carriers and products
AssigneeKarlsruher Institut Fuer Technologie
InventorsTim BOELTKEN, Roland DITTMEYER, Peter PFEIFER
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Abstract
The present invention relates to methods for the conversion of CO2 to chemical energy carriers and products, in particular via a methanation of the gas phase fraction from a Fischer-Tropsch synthesis.
Claims21
-10. (canceled)
A method for converting CO2 into chemical energy carriers and products, wherein the method comprises or consists of:
- (a) provision of a synthesis gas comprising H2, CO and CO2, the synthesis gas having a CO2 content of at least 5 vol. %,
- (b) feeding the synthesis gas to a Fischer-Tropsch synthesis, and converting the synthesis gas to a Fischer-Tropsch synthesis product comprising at least the following fractions:
- (i) a fuel fraction,
- (ii) a wax fraction,
- (iii) a gaseous by-product phase,
- (iv) an aqueous phase,
- (c1) optionally, hydrogenation of the Fischer-Tropsch synthesis product obtained in (b) with addition of hydrogen,
- (c2) multi-stage separation of the Fischer-Tropsch synthesis product obtained in (b) or of the product obtained in (c1),
- and separation of fractions (i), (ii) and (iv),
- (d) methanation of the gaseous by-products in fraction (iii) with addition of H2,
- (e) optionally, further processing of fractions (i), (ii), (iv).
8 more elements
An installation for the conversion of CO2, wherein the installation comprises or consists of the following components:
- (A) a device configured for providing synthesis gas containing CO2,
- (B) a Fischer-Tropsch synthesis device,
- (C1) optionally, a hydrogenation device,
- (C2) a multi-stage separation device,
- (D) a methanation device,
- (E) optionally, a device for introducing methanation product into a natural gas network,
- the components being in operative connection with one another.
4 more elements
Dependencies are inferred from the claim text.