METHOD OF CLARIFICATION OF PETROLEUM, GAS CONDENSATE AND PETROLEUM PRODUCTS FROM HYDROGEN SULFIDE AND / OR LOW-MOLECULAR MERCAPTANS Russian patent published in 2003 - IPC

FIELD: petrochemistry, petroleum, gas, oil-and-gas refining industry, petrochemical and other industries. SUBSTANCE: invention relates to petrochemistry, in particular to methods of petroleum, gas condensate and petroleum derivatives as well as water-petroleum emulsions clarification from hydrogen sulfide and / or low- molecular mercaptans. The method may be used in petroleum, gas, oil-and-gas refining industry, petrochemical and other industries. Petroleum, gas condensate and petroleum derivatives refining from hydrogen sulfide and-or low molecular weight mercaptans is exercised by treatment of the feed stock with aminotriformal (ATF) of the over-all formula: : where: R - alkyl or oxialkyl, taken in amount of 0.5- 2 mole to 1 grammemolecule of hydrogen sulfide and / or C1- C4 mercaptans- At that ATF is used as an aqueous solution previously received from interaction of primary alkylamine or alkanolamine with about 37 %- aqueous solution of formaldehyde (formalin), taken in a molar ratio of primary amine : formaldehyde, equal to 1 : (2.5- 3.5), preferably the ratio should be 1 : 3. Besides the treatment of the a feed stock is carried out under the temperature of 15-85 C. EFFECT: the method allows to increase considerably the degree of a feed stock clarification in comparison with known methods. 4 cl, 5 ex