METHOD FOR PREPARATION AND COMPOSITION OF ADDITIVE FOR DESULPHURATION OF SULPHUR-CONTAINING FUEL Russian patent published in 2012 - IPC C10L1/12 C10L1/188 

FIELD: chemistry.

SUBSTANCE: invention relates to desulphuration of sulphur-containing fuel and can be used in heat power engineering to reduce content of organic sulphur in liquid hydrocarbon fuel. The method of preparing an additive for desulphuration of fuel involves successive mixing of sodium hydroxide (NaOH), CMC-Na and ground cryolite in water. Bischofite is then added to the obtained mixture in an amount necessary for reaction of 100 wt % NaOH with 10-90 wt % bischofite. Magnesium hydroxide Mg(OH)₂ and sodium chloride NaCl are then formed. The resulting suspension is dispersed. The composition of the obtained additive has the following ratio of components, wt %: bischofite - 4.8-43.2; magnesium hydroxide - 1.9-12.4; sodium chloride - 2.8-24.9; cryolite - 0.1-0.3; CMC-Na - 0.1-0.5; water being the balance.

EFFECT: reduced emission of toxic sulphur dioxide gas into the environment, reduced formation of hard-to-dissolve scale and coke deposits and reduced degree of sulphuric acid corrosion.

2 cl, 3 tbl