Method for producing ketones for fuel and oil applications
AssigneeNeste Oyj
InventorsJaana Kanervo, Sami Toppinen, Pekka Nurmi
Life of this patent
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Abstract
A method and system for producing ketones, suitable for manufacture of base oil or diesel fuel components, from a feedstock of biological origin containing fatty acids and/or fatty acid derivatives, and being at least partly in liquid form, by subjecting the feedstock to a catalytic ketonisation reaction, wherein the ketonisation reaction is carried out in a system having one or more ketonisation reactor(s) (A′, B′) each with at least one ketonisation catalyst bed (G′). The method and system for producing ketones use a gas containing CO2 produced in the ketonisation reactors as a carrier gas.
Claims32
A method for producing ketones, suitable for manufacture of base oil or diesel fuel components, from a feedstock of biological origin containing fatty acids or fatty acid derivatives, wherein the feedstock is at least partly in liquid phase, the method comprising:
- introducing the feedstock into a ketonisation reactor together with a carrier gas stream containing CO2;
- subjecting the feedstock to a catalytic ketonisation reaction, wherein the ketonisation reaction is carried out in a system having one or more ketonisation reactor(s) each with at least one ketonisation catalyst bed;
- separating gas containing CO2 from an effluent exiting a ketonisation reactor whereby the effluent containing ketones is used either as a feedstock for a further ketonisation reactor or for recovery of ketones from the effluent;
- and
- recycling the separated gas containing CO2 for use in the carrier gas stream in a ketonisation reactor.
A system for producing ketones, suitable for manufacture of base oil components, from a feedstock of biological origin containing fatty acids or fatty acid derivatives by subjecting the feedstock to a catalytic ketonisation reaction, wherein the system comprises:
- one or more ketonisation reactors (A′, B′) each having a ketonisation catalyst bed (G′), means for heating, inlet means for the feedstock, and outlet means for the effluent exiting a ketonisation reactor, wherein the one or more ketonisation reactors each includes:
- inlet means for carrier gas streams, and outlet means for separated gas streams containing CO2;
- and wherein the system comprises:
- one or more gas-liquid separators (D′, E′) for separating CO2 in separated gas streams from H2O vapour, unreacted fatty acids or fatty acid derivatives, or volatile organic compounds, and means (F′) for recirculating and optionally compressing the separated CO2;
- and optionally
- recycling means for liquid containing unreacted fatty acids or fatty acid derivatives, and outlet means for separated CO2.
Method for supplying a gas containing CO2 as a carrier gas stream in a ketonisation reaction, the method comprising:
- producing the gas containing CO2 in a catalytic ketonisation reaction producing ketones, suitable for manufacture of base oil components, from a feedstock of biological origin containing fatty acids or fatty acid derivatives, wherein the feedstock is at least partly in liquid phase, in one or more ketonisation reactors each having a ketonisation catalyst bed;
- and
- separating the gas from effluent exiting a ketonisation reactor and recycling the gas.
Dependencies are inferred from the claim text.