METHOD FOR PROCESSING RAW MATERIALS TO OBTAIN MOTOR FUEL COMPONENTS Russian patent published in 2023 - IPC C10J3/16 C10G2/00 C07C1/02 

FIELD: processing organic waste.

SUBSTANCE: method for processing organic waste includes a stage of gasification by treating organic waste with a gasifying agent to obtain synthesis gas and solid inorganic products, a stage for cleaning and compressing synthesis gas, a stage for synthesis of liquid hydrocarbons by catalytic processing of synthesis gas in two reaction zones, while the first reaction zone contains a catalyst, the oxide part of which and the acid component are in a mixed or separate combination, and the second reaction zone contains an acid catalyst with a zeolite with ZSM-5 or ZSM-11 structure, a stage for separation of liquid hydrocarbons to motor fuel, a stage for disposal of separated products. Catalytic processing of synthesis gas is carried out in the first reaction zone at a temperature of 160-420°C and a pressure of 2-100 atm, and in the second reaction zone at a temperature of 300-500°C and a pressure of 2-100 atm, in which raw materials in form of solid domestic, municipal waste are used as organic waste. The resulting synthesis gas, in addition to H₂ and CO, contains other components, which characterizes the resulting mixture as a reaction gas. The stage of gasification of raw materials is carried out in a direct-flow mode by pyrolysis, oxidation and reduction to obtain a reaction gas, pyrolysis gases formed as a result of conductive heating of organic raw materials with reaction gas, as well as vent gases after separation of reaction products are used as a gasifying agent, oxidation is carried out with air enriched oxygen, a carbon residue is additionally introduced into the reduction zone with a temperature of 500-550°C containing a selective catalyst. Solid waste after gasification is separated into ash and a selective catalyst for recirculation, and the sensible heat of the exhaust reaction gas is recovered for preliminary drying of the raw material.

EFFECT: increase in the energy efficiency of the process and a reduction in costs in the processing of organic raw materials.

1 cl, 1 dwg