Sodium Methylene Dinaphthalene Sulfonate Osmotic Powerful Demulsifier

Abstract

The invention discloses a disodium methylene dinaphthalenesulfonate infiltration strong demulsifying agent. The disodium methylene dinaphthalenesulfonate infiltration strong demulsifying agent is characterized by comprising the following materials in parts by weight: 20-30 parts of water-soluble sodium sulfonate soap, 45-60 parts of disodium methylene dinaphthalenesulfonate, 20-30 parts of castor oil, 4-8 parts of soya-bean oil, 25-50 parts of naphtha, 4-8 parts of triethanolamine and 2-5 parts of 3% ammonia water. All the materials are mixed to carry out stirring and reaction for 2-5 hours at the temperature of 75-90 DEG C so as to obtain the product. The disodium methylene dinaphthalenesulfonate infiltration strong demulsifying agent has the advantages of available raw materials, low cost, environmental protection and excellent effect, and is convenient to use.

Description

technical field [0001] The invention belongs to an oilfield chemical, in particular to an oilfield auxiliary. Background technique [0002] Oilfield additives include degreaser, clear water agent, inverse demulsifier, sewage clarifier, demulsifier, calcium magnesium iron ion remover. In the process of tertiary oil recovery, with the widespread promotion of polymer flooding and polymer surface flooding in oilfields, the accompanying problems of produced water treatment have become increasingly acute. Traditional oily sewage degreasers are generally inorganic polymers. Aluminum flocculants, this type of flocculants have better treatment effect on general oily sewage, but cannot meet the expected treatment requirements for sewage containing polymers. The use of inorganic polyaluminum has three unfavorable factors: (1) The introduction of high-priced inorganic ions increases the corrosion of the water system to the equipment. (2) The oil separated from the water station contai...

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Problems solved by technology

Due to the introduction of high-valent cations, the conductivity of the system is increased, which can easily cause the breakdown of the two high-voltage plates of the electric dehydrator, and the high-voltage electric field cannot be established, which affects the normal operation of production.

(3) For sewage containing polymers, polymerized aluminum flocculants react with polymers to form viscous large flocs, which cause serious blockage in sewage treatment filter devices, pollute filter materials, and reduce production efficiency

[0003] After searching for Chinese published patents, no solution identical to this patent application was found

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