RUBBER-CONTAINING WASTE PROCESSING Russian patent published in 2005 - IPC

FIELD: rubber industry.

SUBSTANCE: invention, in particular, relates to reusing worn out motor car tires and mechanical rubber ware by processing them into fuel oil and liquid and solid matters that can be used as raw material for various production processes. Processing of rubber-containing waste comprises fluidization of waste in hydrocarbon solvent (benzene) at 280-320°C, separation of liquid fraction, and distillation thereof to produce desired products. According to invention, prior to be fluidized, waste is treated, in atmosphere of gas, which is inert to initial waste, with destruction products in excess benzene until complete swelling is attained, after which excess benzene is separated and recycled to the head of process. Thermal fluidization is conducted in the same gas atmosphere, while simultaneously separating liquid fraction and obtaining fuel oil as target product and benzene, a part of which being returned into process. Inert gas is preferably carbon dioxide and heating to 280-320°C is provided by high-frequency currents at thermal fluidization pressure up to 2 atm.

EFFECT: reduced expenses and improved environmental safety of processing due to wasteless technology.

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