Heavy oil emulsifier and preparation method thereof

Abstract

The invention discloses a heavy oil emulsifier and a preparation method thereof. The heavy oil emulsifier is prepared from the raw materials in parts by weight: 10 to 12 parts of span-80, 10 to 12 parts of tween-60, 6 to 9 parts of alkylphenol ethoxylates, 6 to 9 parts of alkyl benzene sulfonic acid, 4 to 6 parts of dicarboxyl sulfuric acid betaine type zwitter-ion dimeric surfactant, 0.5 to 1.5 parts of urea, 4 to 8 parts of glycerol, 5 to 8 parts of stearic acid, and 20 to 30 parts of deionized water. According to the heavy oil emulsifier provided by the invention, the oil / water interface tension can be remarkably reduced, so that water drops are stably dispersed into heavy oil for a long term so as to form a stable microemulsion system; the heavy oil viscosity is greatly diluted, so that the fluidity is improved, and the heavy oil emulsifier can be widely applied to the fields such as thickened oil recovery and transportation, industrial burnup, heavy oil fluid catalytic cracking and casting techniques, and has a broad market prospect.

Description

technical field [0001] The invention belongs to the field of heavy oil emulsifiers, in particular to a heavy oil emulsifier and a preparation method thereof. Background technique [0002] Heavy oil, also called residual oil, is the remaining heavy oil after gasoline and diesel oil are extracted from crude oil. It is characterized by large molecular weight, high viscosity and complex composition. Due to the complex composition of heavy oil, which contains a variety of harmful substances (such as sulfur, sodium, vanadium, etc.), heavy oil will cause serious corrosion to metal equipment when it is burned. [0003] In the past, physical and chemical methods were used to make viscous heavy oil into a fluid with good fluidity at room temperature, so as to achieve the purpose of heavy oil production, transportation and industrial combustion without steam heating and heat tracing. However, traditional physical or chemical methods are costly. At present, heavy oil emulsification tec...

AI Technical Summary

Problems solved by technology

The surfactants used in traditional emulsifiers are mostly petroleum sulfonates, amphoteric surfactants, nonionic surfactants, anion-nonionic surfactants and anion / cation composite surfactants, but each of them has corresponding Defects, such as petroleum sulfonate is easy to adsorb with clay, resulting in a large loss; nonionic surfactants have poor compatibility and thermal stability in the formation; amphoteric surfactants, anion-nonionic surfactants and anion / cation The price of complex surfactants is not only high, some are only in the research and development stage

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