METHOD OF PREPARING SORBENT FOR ORGANIC COMPOUNDS Russian patent published in 2006 - IPC C01B31/10 

FIELD: sorbents.

SUBSTANCE: invention relates to preparing sorbent for organic compounds from carbon residue formed during pyrolysis of rubber-containing waste, including worn-out tires. After termination of pyrolysis process, steam originated from an exterior source is first fed directly into pyrolysis chamber for at least 10 min and then cooling water is fed stepwise with intervals at least 10 min, amount of added water being not larger than 0.12 L per 1 kg carbon residue. Received steam preliminarily activates carbon residue and stepwise feed of cooling water fulfills two functions: increase of porous structure of carbon residue and gradual temperature drop in the chamber to 150-200°C. During each interval between water supply step, carbon residue undergoes gradual activation caused by steam formed in preceding cooling step. Summary amount of water supplied in all cooling steps does not exceed 0.5 L per 1 kg carbon residue.

EFFECT: simplified method of preparing sorbent having high oil-sorption capacity.

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