DESULPHURATION AND NOVEL DESULPHURATION METHOD Russian patent published in 2010 - IPC B01J23/80 B01J21/12 B01J37/04 B01J37/08 B01J37/16 C10G45/06 C10G29/16 B01J20/06 

FIELD: chemistry.

SUBSTANCE: present invention relates to removal of sulphur from hydrocarbon streams, to a composition which is suitable for use in desulphuration of streams of cracked petrol and diesel fuel, and a method of preparing the said composition. A method of preparing a composition for removing sulphur from hydrocarbon streams involving the following is described: (a) mixing: 1) a liquid, 2) first metal formate, 3) material containing silicon dioxide, 4) aluminium oxide and 5) second metal formate, to form a mixture of the said components; (b) drying the said mixture to form a dried mixture; (c) calcination of the dried mixture; and (d) reduction of the calcined mixture with a reducing agent under reduction conditions to form a composition which contains a low valency activator, (e) separation of the obtained composition, where the said calcined reduced mixture facilitates removal of sulphur from a stream of hydrocarbons under desulphuration conditions, and where the said liquid is ammonia, and the composition obtained using the method described above. A method of removing sulphur from a stream of hydrocarbons involving the following is described: (a) bringing the stream of hydrocarbons into contact with the composition obtained using the method described above in a desulphuration zone under conditions which facilitate formation of a desulphurated stream of hydrocarbons from the said sulphonated composition and formation of a separate desulphurated stream of hydrocarbons and a separate sulphonated composition; (c) regeneration of at least a portion of the said separate sulphonated composition in the regeneration zone to remove at least a portion of sulphur contained in it and/or on it and formation of a regenerated composition as a result, (d) reduction of the said regenerated composition in an activation zone to form a composition containing a low valency activator which facilitates removal of sulphur from the stream of hydrocarbons when it touches such a composition, and e) subsequent return of at least a portion of the said reduced composition to the said desulphuration zone. Cracked petrol and diesel fuel obtained using the method described above are described.

EFFECT: more stable removal of sulphur from streams of hydrocarbons during desulphuration.

26 cl, 8 tbl, 17 ex