Preparation method of magnetic antiphase demulsifier

A reversed-phase demulsifier and magnetic technology, applied in magnetic liquids, separation methods, grease/oily substances/floating matter removal devices, etc., can solve the problems of low universality, high dosage, and unsatisfactory oil removal efficiency. , to achieve the effect of easy separation and recovery, reduction of organic content, and high oil-water separation effect

Inactive Publication Date: 2014-02-05
SOUTHEAST UNIV
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Problems solved by technology

[0004] Most of the existing inverse demulsifiers are polyethers and polymer compounds, especially for the complex composition of "three mining" O / W type oily sewage, the degreasing efficiency is not ideal, the dosage is large, and the universality is not high

Method used

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Embodiment 5

[0022] The iron trichloride of embodiment 5.2.00g, the trisodium citrate of 0.70g are dissolved in the ethylene glycol of 70.0g, add the sodium acetate of 3.60g and the polyacrylic acid of 0.12g subsequently, after stirring for 40 minutes, mix the solution Move into a hydrothermal kettle, heat to 210°C and maintain for 12 hours, then cool to room temperature, wash the product with water and ethanol 5 times, disperse in water and store for later use; take 1.0g of ferric oxide, 50.0g of water, 160.0 g of ethanol was added to the reactor, 3.60 g of ammonia water was added, and after stirring for 25 minutes, 0.96 g of tetraethyl orthosilicate was added dropwise and reacted at 30° C. for 8 hours, and then the product was washed with water and ethanol for 4 times, and the Vacuum dry at 90°C for 10 hours to obtain monodisperse core-shell microspheres; take 0.50 g of monodisperse core-shell microspheres into the flask, then add 130 g of toluene, ultrasonically disperse for about 40 min...

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Abstract

The invention discloses a preparation method of a magnetic antiphase demulsifier. The preparation method is characterized by firstly, preparing monodisperse ferroferric oxide magnetic microspheres by a hydrothermal method; secondly, coating a layer of thin silicon dioxide on the surfaces of the monodisperse ferroferric oxide magnetic microspheres, synthesizing magnetic microspheres with nuclear shell structures, performing group functional modification on the nuclear shell magnetic microspheres by using a silane coupling agent KH560; at last, performing grafting reaction by using the activity of functional groups and an antiphase demulsifier to obtain the magnetic antiphase demulsifier; the magnetic antiphase demulsifier prepared by the preparation method can improve the efficiency of original antiphase demulsifiers and has the characteristics of easy separation, high oil removing rate, obvious separation effect to oil-containing sewage, little use amount and high efficiency.

Description

technical field [0001] The invention relates to the field of oily sewage treatment in the process of oil extraction, collection and transportation, in particular to a preparation method and application of a magnetic reverse phase demulsifier. Background technique [0002] In recent years, as my country's crude oil mining has entered a period of high water content, the water content of the produced fluid has reached more than 90%, and more and more sewage needs to be treated for reinjection. At the same time, with the development of "tertiary oil recovery" technology and the application of a large number of polymers, surfactants, and alkalis, the water content of the produced fluid increases, the oil-water separation speed slows down, and even shows a serious emulsification tendency. The oily sewage forms a stable O / W emulsion, and the oil content in the sewage exceeds the standard, which causes considerable difficulty in the treatment of reinjection water; at present, the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/40H01F1/44
Inventor 周建成李树强李乃旭崔黎黎
Owner SOUTHEAST UNIV
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