PROCEDURE FOR PREPARING HEAVY HYDROCARBON RAW STOCK FOR THERMAL OR CATALYTIC THERMAL DECOMPOSITION Russian patent published in 2011 - IPC C10G9/00 C10G11/00 B82B1/00 

FIELD: oil and gas production.

SUBSTANCE: invention refers to procedure for preparing heavy hydrocarbon raw stock for thermal or catalytic thermal decomposition. The procedure consists in stages of preliminary homogenisation of raw stock in mixture with modifier and surface active substance at temperature not exceeding modifier boiling point and in dispersing produced mixture to formation of dispersion with average diametre of particles of disperse phase equal to 150-700 nm. Also, as modifier there are used oil fractions with contents of poly-nucleus thermal stable aromatic hydrocarbons not less, than 60 wt % taken at amount of 0.5-8.0 wt % relative to total weight of raw stock. As surface active substances there are used lecithin, and (bis-(2 ethylhexyl) sodium sulphoxynate) taken at amount of 1.0-0.001 wt % over total weight of raw stock for stabilisation of high degree of dispersion of colloid structure of heavy hydrocarbon raw stock.

EFFECT: increased output of tops and reduced output of coke due to diminished structural viscosity and increased degree of dispersion of colloid structure of heavy hydrocarbon stock.

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