Use of methane pyrolysis to decarbonize a hydrocarbon cracking system
AssigneeChevron Phillips Chemical Company LP
InventorsJames Hillier, Michael S. Webster-Gardiner
Life of this patent
Estimating the term…
Abstract
Processes and systems that utilize methane pyrolysis for carbon capture from a petrochemical stream that contains hydrogen and methane. The petrochemical stream can be the tail gas of a hydrocarbon cracking system, or any other petrochemical stream containing hydrogen and methane. The petrochemical stream can be separated into a hydrogen product stream and a methane product stream, before sending the methane product stream to a methane pyrolysis unit. The methane pyrolysis unit converts methane to solid carbon and hydrogen.
Claims18
A hydrocarbon cracking system including:
- a furnace having a conduit contained in an interior of the furnace;
- a first separator fluidly connected to an outlet of the conduit and configured to separate a first hydrocarbon product stream into a hydrogen-rich hydrocarbon fuel stream and a second hydrocarbon product stream;
- a second separator fluidly connected to the first separator and configured to separate the hydrogen-rich hydrocarbon fuel stream into a first hydrogen product stream and a methane product stream;
- and
- a methane pyrolysis unit having an inlet that is configured to receive the methane product stream, wherein the methane pyrolysis unit is configured to convert methane received from the methane product stream to a second hydrogen product stream comprising hydrogen and solid carbon stream comprising solid carbon,
- wherein the second hydrogen product stream is fluidly coupled to an outlet of the methane pyrolysis unit and to the inlet of the furnace.
A hydrocarbon cracking system including:
- a furnace having a conduit contained in an interior of the furnace;
- a first separator fluidly connected to an outlet of the conduit and configured to separate a first hydrocarbon product stream into a hydrogen-rich hydrocarbon fuel stream and a second hydrocarbon product stream;
- and
- a methane pyrolysis unit having an inlet that is configured to receive the hydrogen-rich hydrocarbon fuel stream, wherein the methane pyrolysis unit is configured to convert methane received from the hydrogen-rich hydrocarbon fuel stream to a hydrogen product stream comprising hydrogen and solid carbon stream comprising solid carbon,
- wherein the hydrogen product stream is fluidly coupled to an outlet of the methane pyrolysis unit and to an inlet of the furnace.
Dependencies are inferred from the claim text.