METHOD AND INSTALLATION FOR CONTINUOUSLY PROCESSING HYDROCARBON MATERIALS Russian patent published in 1998 - IPC

Abstract RU 2118291 C1

FIELD: activated carbon production. SUBSTANCE: method includes hydrocarbon material preheating up to 120-150 C, carbonization, activation stages, and directing resultant gas-vapor mixture to solid carbonization product in countercurrent mode. Hydrocarbon material is processed in oxygen-free atmosphere by feeding dry nitrogen to solid carbonization product. Raw material preheating stage and/or carbonization stage are carried out in presence of halogen, metal halide, ammonium halide, or their mixtures (0.5-1 wt. %) and sulfur-containing reagent (4-5 wt.% on conversion to sulfur). Carbonization is performed within temperature range 150-250-600-700 C. Tarry product formed in preheating and carbonization stages is separated, and solid carbonization product is activated with overheated steam and cooled. Displacement of solid product throughout each processing stage is accomplished forcibly with regulated displacement velocity. Activated carbon from ageing stage is discharged and gas-vapor mixture from this stage is directed into preceding stages. Gas-vapor mixture from preheating stage is withdrawn and separated into tar-like product and water- organic condensate. Installation comprises in series connected (through overflow pipes) and stacked up preheating, carbonization, and activation chambers, raw material and overheated steam-supply units, activated carbon discharge mechanism, gas-vapor withdrawal pipe, reaction additives-supply unit, ageing chamber with dry nitrogen inlet pipe concatenated through overflow pipe with activation chamber and located under this, and gas-vapor separation unit with tar-like product and water-organic condensate outlet pipes. Inlet of the latter is connected to gas-vapor discharge pipe disposed on the top part of preheating chamber. The chambers are executed in the form of identical screw-type reactors with drives. Preheating and carbonization chambers are provided with heating jackets, activation and ageing chambers with cooling jackets. Activated carbon discharge mechanism is located at ageing chamber outlet. EFFECT: enabled low-temperature technology and integrated processing of hydrocarbon materials. 16 cl, 3 dwg, 2 tbl

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RU 2 118 291 C1

Authors

Dates

1998-08-27Published

1998-02-26Filed