Highly efficient anti-phase emulsion breaker for thick oil pollution water processing

A technology of inverse demulsifier and heavy oil sewage, applied in chemical/physical processes, dissolution, chemical instruments and methods, etc., can solve the problems of difficult control of the production process, difficult to achieve synthesis conditions, high production costs, and achieve demulsification efficiency. The effect of high, low production cost and fast separation of oil and water

Inactive Publication Date: 2007-05-23
YANGTZE UNIVERSITY
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AI Technical Summary

Problems solved by technology

The first method is difficult to achieve synthesis conditions due to the high pressure required for the reaction
The second method has a better demulsification effect, but the production cost is high and the production process is not easy to control
For example, the LH-005 heavy oil sewage demulsifier developed by Tianjin University Chemical Experiment Center is mainly aimed at the advanced treatment of heavy oil sewage. The treated water is used in thermal recovery boilers. It is a copolymer of acrylamide and its derivatives. It is compounded with polyquaternium, ethylene oxide and propylene oxide block copolymers, and coagulant aids with different properties are added, which has certain universality, but the cost is relatively high

Method used

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  • Highly efficient anti-phase emulsion breaker for thick oil pollution water processing
  • Highly efficient anti-phase emulsion breaker for thick oil pollution water processing
  • Highly efficient anti-phase emulsion breaker for thick oil pollution water processing

Examples

Experimental program
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Embodiment Construction

[0020] 1. Synthesis of Propylene Glycol Polyether

[0021] In a clean and dry three-necked flask, add 0.5mol of propylene glycol starter, then add 0.7g (about 2%) of catalyst KOH, replace with nitrogen 4 times, heat to 100°C under stirring, vacuumize and remove moisture, then Add 2.0mol propylene oxide and 2.0mol ethylene oxide to the three-necked flask successively, keep the temperature at 100°C, react for 6 hours, lower the temperature, clean the reaction with nitrogen, then discharge, wash with absolute ethanol 4 times, and then After drying at 120°C for 24 hours, the obtained white solid product is propylene glycol polyether.

[0022] 2. Synthesis of alkylphenol polyoxyethylene ether

[0023] Add 0.5mol of nonylphenol initiator and 4.8g (about 2%) of catalyst KOH into a clean and dry autoclave, and after installing the autoclave, use nitrogen to purge the pipeline several times, and heat to 100°C- 110°C, vacuumize to remove moisture, then inject nitrogen into the autocla...

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Abstract

The invention relates to a dense oil sewage treatment reverse-phase demulsifying agent, wherein the invention is characterized in that: it uses methyl glycol as initial agent, via catalyst, to process oxypropylation reaction, and process aggregation with epoxyethane, to generate methyl glycol polyether; uses nonyl phenol as initial agent, via catalyst, to react with epoxyethane to generate nonyl phenol ethoxy compound, then to be aggregated with epoxypropane, to generate alkyl phenol polyvinyl ether; then mixing two products, to process esterification with acroleic acid under acid condition, via initiator to process free group aggregation, to generate esterified product, then uses maleic acid to seal end, to generate acroleic acid modified macromolecule demulsifying agent. The invention has simple process, warm reaction, and high efficiency.

Description

Technical field: [0001] The invention relates to a high-efficiency reverse-phase demulsifier for heavy oil sewage treatment, which belongs to the field of chemical treatment agent design for oilfields. Background technique: [0002] At present, in the oilfield sewage treatment agent system, there are many varieties of polymer reverse phase demulsifiers, and there are basically three synthesis methods: 1. Using new catalysts, such as bimetallic catalysts, can directly synthesize molecular weights from 10,000 to hundreds of thousands 2. Use chain extenders such as epoxy resin or isocyanate to react with polyalkoxy ether to increase the molecular weight of polyether; 3. Introduce polymerizable monomers such as acrylic acid into the polyether molecular chain, The molecular weight of polyether is increased by polymerization reaction. The first method is difficult to achieve synthesis conditions due to the high pressure required for the reaction. The second method has a better d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/42B01D17/05C09K23/42
Inventor 赵林马超王贯中熊成香
Owner YANGTZE UNIVERSITY
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