FIELD: petroleum processing. SUBSTANCE: total acid number of crude oil is lowered when crude oil is heated at 204 C at pressure from 0.1 to 100 atm while simultaneously removing water vapors inhibiting total acid number lowering by blowing crude oil with gas at flow velocity from 0.178 to 356 cu. m/cu.m. EFFECT: facilitated crude oil neutralization. 19 cl, 1 dwg, 4 tbl, 4 ex
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