US 2024/0124786 A1Published application

Process and plant for producing e-fuels

AssigneeTopsoe A/S

InventorsOle Frej ALKILDE, Angelica HIDALGO VIVAS, Kim AASBERG-PETERSEN, Peter Mølgaard MORTENSEN, Thomas Sandahl CHRISTENSEN

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Abstract

Process and plant for producing a hydrocarbon product boiling in the gasoline boiling range, comprising: upgrading a naphtha containing stream derived from Fischer-Tropsch (FT) synthesis by passing the naphtha containing stream through an aromatization stage comprising contacting the naphtha containing stream with an aluminosilicate zeolite, thereby producing said hydrocarbon product boiling in the gasoline boiling range, and a separate light hydrocarbon gas stream, such as liquid petroleum gas (LPG) stream. The synthesis gas for the FT-synthesis is produced by electrically heated reverse water gas shift (e-RWGS) of a feedstock comprising CO2 and H2.

Claims15

Dependent claims

A process for producing a hydrocarbon product boiling in the gasoline boiling range, said process comprising the steps of:

i) converting a feedstock comprising CO2 and H2 into a synthesis gas in a synthesis gas section, by conducting a reverse water gas shift reaction in a reverse water gas shift (RWGS) unit, for thereby producing said synthesis gas;
ii) passing at least a part of the synthesis gas to a synthetic fuel synthesis unit comprising Fischer-Tropsch (FT) synthesis in a FT-synthesis reactor for producing one or more FT-product streams including a FT-condensate stream, optionally also a FT-tail gas stream, and subsequent hydroprocessing of the one or more FT-product streams in one or more hydroprocessing stages, for producing a hydrocarbon product boiling at above 30° C., including a hydrocarbon product boiling in the diesel fuel range, optionally a hydrocarbon product boiling in the jet fuel range, and a naphtha stream;
iii) upgrading at least a portion of said naphtha stream and/or at least a portion of the FT-condensate stream, by passing it through an aromatization stage comprising:
contacting the at least a portion of said naphtha stream, and/or the at least a portion of the FT-condensate stream with a catalyst comprising an aluminosilicate zeolite, thereby producing said hydrocarbon product boiling in the gasoline boiling range, and a separate light hydrocarbon gas stream;
and wherein the aluminosilicate zeolite has a MF1-structure, the temperature is in the range 300-500° C., the pressure is 1-30 bar, and optionally there is addition of hydrogen.

2 more elements

A plant for producing a hydrocarbon product boiling in the gasoline boiling range, comprising:

a) a synthesis gas section arranged to at least receive a feedstock comprising CO2 and H2 and for producing a synthesis gas, said synthesis gas section comprising:
a-1) a reverse water gas shift (RWGS) unit, arranged for operating in non-selective mode by comprising a catalyst which apart from being active for RWGS, is also active for conducting steam reforming and/or methanation;
a-2) a water (steam) electrolysis unit for producing said H2;
b) a synthetic fuel synthesis unit arranged for converting said synthesis gas into a hydrocarbon product boiling at above 30° C. including:
one or more of a hydrocarbon product boiling in the diesel fuel range, optionally a hydrocarbon product boiling in the jet fuel range, and a naphtha stream;
said synthetic fuel synthesis unit comprising:
b-1) a FT reactor arranged for receiving the synthesis gas and for outletting one or more FT product streams including a FT-condensate stream, and
b-2) a hydroprocessing section arranged downstream said FT reactor for receiving at least a portion of the one or more FT product streams and for producing said hydrocarbon product;
the hydroprocessing section optionally also being arranged for receiving a hydrogen stream;
optionally,
b-3)—a bypass conduit for outletting at least a portion of the FT-condensate stream around said hydroprocessing section as a bypass FT-condensate stream;
c) an aromatization section comprising a reactor, suitably a fixed bed reactor, containing a catalyst, the catalyst comprising an aluminosilicate zeolite having a MF1-structure, and arranged to receive said naphtha stream or a portion thereof and said bypass FT-condensate stream, for producing said hydrocarbon product boiling in the gasoline boiling range, and for producing a light hydrocarbon gas stream;
the aromatization section further being arranged for operating at 300-500° C. and 1-30 bar;
optionally,
d) a hydrogen producing unit (HPU) arranged to receive said light hydrocarbon gas stream and optionally arranged to also receive a hydrocarbon feed gas from an external source.

12 more elements

Dependencies are inferred from the claim text.