METHOD OF INCREASING EFFICIENCY OF DRY PREPARATION OF PETROLEUM COKE Russian patent published in 2018 - IPC C10L9/10 C10L5/36 C21B3/04 C21B5/00 C22B7/04 C04B7/44 C10L5/10 

FIELD: chemistry.

SUBSTANCE: invention discloses a method for dry grinding of petroleum coke, including the addition of additives to petroleum coke and dry grinding of petroleum coke together with these additives, characterized in that a combination of at least one organic additive is used as said additives, selected from the group consisting of alkanolamines, such as tripropanolamine, polyols, such as diethylene glycol, polyamides, polyesters, polyethers, polycarboxylate esters, polycarboxylate ethers, sodium polyoxyalkylene alkylcarbonate, amine salts, polyol salts, and combinations thereof, and at least one inorganic additive selected from the group consisting of limestone, dolomitic limestone, fly ash, slag, clay, laterite, bauxite, iron ore, sandstone and their combinations, the additives are added to petcoke in the amount of from 0.51 to 10 % of the mass by weight of petcoke.

EFFECT: technical result consists in reducing the energy consumption for grinding petroleum coke to a predetermined grinding fineness, which in turn provides a reduction in SO₂ emissions, which are formed during the combustion of petroleum coke.

4 cl, 5 dwg, 28 ex