METHOD OF ORGANIC WASTE PROCESSING (VERSIONS) Russian patent published in 2008 - IPC C10J3/16 B09B3/00 C02F11/00 

FIELD: chemistry.

SUBSTANCE: invention concerns organic waste utilisation, particularly sediments of urban sewage, by gasification and further catalytic transformation of the obtained synthesis gas into fluid motor fuel and/or valuable chemicals. The invention claims variants of organic waste treatment including gasification stage with obtainment of synthesis gas and solid non-organic products, and catalytic treatment of synthesis gas with or without fluid organic waste with obtainment of gaseous or fluid hydrocarbons. The first and second variants involve water vapour or oxygen or oxygen with water vapour as gasifying agent. According to the first variant, combustible gas is divided into several parts at the gasification stage. One part of combustible gas with gasifying agent is fed to a plasmatron, another part with waste and gasifying agent is fed to plasma jet of the plasmatron, and the rest of combustible gas is fed to catalytic steam reforming reactor with obtainment of hydrogen-enriched synthesis gas and further mixing with the major flow of synthesis gas obtained by gasification, followed by catalytic processing in two reaction areas. The first reaction area holds a catalyst with mixed or separate combination of its oxide and acid components, while the second reaction area includes an acid catalyst containing zeolite with ZSM-5 or ZSM-11 structure. According to the second variant, combustible gas is divided into two parts, with one part of combustible gas with gasifying agent fed together to plasmatron and the other part of combustible gas together with waste and gasifying agent is fed to plasma jet of the plasmatron, the synthesis gas obtained by gasification undergoes catalytic processing in two reaction areas. The first reaction area holds a catalyst with mixed or separate combination of its oxide and acid components, while the second reaction area includes an acid catalyst containing zeolite with ZSM-5 or ZSM-11 structure.

EFFECT: improved consumer properties of hydrocarbons, increased yield of target products, recuperation of physical heat of high-temperature gas flow.

22 cl, 2 dwg, 7 ex