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Method and an apparatus for producing energy by recycling materials during a fuel combustion process

  • US 9,745,895 B2
  • Filed: 05/18/2012
  • Issued: 08/29/2017
  • Est. Priority Date: 05/18/2011
  • Status: Active Grant
First Claim
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1. A method for producing energy by recycling materials during a fuel combustion process (1) taking place in a fuel combustion device, which is a boiler or a furnace, wherein the fuel combustion process comprises combusting fuel introduced into the fuel combustion process, wherein the method comprises:

  • introducing a stream of flue gas (4) comprising carbon dioxide and produced in the fuel combustion process (1) into a biomass cultivating process (2), where the flue gas takes part in the production of biomass and oxygen;

    introducing at least part of the biomass produced in the biomass cultivating process (2) into a biogas production process (3), where the biomass takes part in the production of biogas;

    introducing at least part of the oxygen produced in the biomass cultivating process (2) into the fuel combustion process (1);

    introducing at least part of the biogas produced in the biogas production process (3) into the fuel combustion process (1), where the biogas is combusted as fuel; and

    introducing combustion air (9) comprising oxygen and nitrogen into the fuel combustion process;

    such that the need to introduce fuel (11) selected from a group of fossil fuel comprising coal, biofuel, industrial waste, municipal waste and any combination thereof, into the fuel combustion process (1) during the fuel combustion process in addition to the biogas produced in the biogas production process (3) and introduced into the fuel combustion process is reduced.

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