SORBENT, METHOD OF PREPARING SAID SORBENT AND METHOD OF DRYING HYDROCARBONS Russian patent published in 2010 - IPC B01J20/08 B01J20/30 B01D53/28 

FIELD: chemistry.

SUBSTANCE: invention relates to drying hydrocarbons through sorption and can be used in oil refining and petrochemical industries. A calcium chloride based sorbent is proposed, which is placed in pores of a solid body - matrix, which is a composition of aluminium, calcium and boron oxides, with the following content of components of the sorbent, wt %: AI₂O₃ - 50-80; B₂O₃ -5-30; CaO - 10-11; CaCl₂ - 5-30, with total concentration of Broensted and Lewis acid sites on the surface of the sorbent of not more than 7 mcmol/g. The sorbent for drying hydrocarbons is obtained by simultaneously mixing a hydrate of aluminium oxide with pseudo-boehmite structure with orthoboric acid and calcium chloride, granulation, drying and calcination. The method of drying hydrocarbons involves bringing hydrocarbons into contact with the proposed sorbent at temperature 0-40°C and regeneration of the sorbent at temperature 150-200°C in the current of a gas consisting of C₁-C₄ hydrocarbons, hydrogen, nitrogen.

EFFECT: invention enables efficient drying of hydrocarbons, particularly pyrolysis gas; the sorbent is characterised by high stability of drying properties during repeated use in drying-regeneration cycles.

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