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A kind of clay mineral demulsifier and its preparation method, application and recycling method

A technology of clay minerals and demulsifiers, which is applied in the fields of new clay mineral demulsifiers and their preparation, demulsification treatment of oil-in-water emulsions, and recycling. Stable operation of the dehydration system and other issues, to achieve high dehydration efficiency, better demulsification effect, and good demulsification effect

Active Publication Date: 2020-11-06
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While consuming a lot of energy, a large number of extremely stable and difficult to handle floc transitional layers appeared in the settling tank, which seriously affected the normal and stable operation of the crude oil dehydration system
Although many important research progresses have been made at home and abroad, under the new situation, it is necessary to develop a universal (containing different water content, different pH value, different impurity and different origin of crude oil), efficient, fast and economical Practical demulsification technology is still a long-term and arduous task

Method used

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  • A kind of clay mineral demulsifier and its preparation method, application and recycling method
  • A kind of clay mineral demulsifier and its preparation method, application and recycling method
  • A kind of clay mineral demulsifier and its preparation method, application and recycling method

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Experimental program
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Effect test

Embodiment 1

[0048] The method of preparing the novel concave rod adhesive break of the emulsion, the method comprising the steps of:

[0049] (1) Tipping of the diffusing rod clay: Brave the uneven ore mine, over 200 mesh sieve. 1 kg of uneven clay was added to 50 L of water, and 6 g of sodium hexaphyphosphate was added, under 3000 rpm conditions, mechanically stirred for 2 h; standing for 2 to 8 h, using a siphoni, remove the upper clay mineral, 50 rpm centrifuge, freeze dry. Remove the purified concave clay clay which removes impurities such as quartz.

[0050] (2) Acidification treatment of embossing clay clay: 100 g of purified concave rod clay mineral addition of 500 mL of deionized water, ultrasonic scaling, adding dispersed suspension to the reaction vessel, add 1 mol / L of dilute hydrochloric acid, 60 ° C reaction After 1 h, after the reaction was completed, the centrifugal concave rut was washed three times with deionized water, and the frozen dried, thereby obtaining an acidified m...

Embodiment 2

[0054] The preparation method of the novel concave rod adhesive breaks the emulsion, the method is substantially the same, and the difference is only: Step (4) New clay mineral seedlings solvent thermal synthesis: 1 g of iron chloride is dissolved in 20 ml In the ethylene glycol solution, then 1 g of step (3) obtained by means of a modified uneven bobbine, 3 g sodium citrate and 0.5 g of polyethylene glycol, stirred for two minutes, with ultrasound cleaning gauge ultrasonic dispersion of 10 min, stir well The mixture was transferred to a hydrothermal synthetic reaction kettle, and the constant temperature was reacted at 200 ° C for 28 h, remove the product, centrifugal, washed, and the new uneven stick cucumber was broken.

Embodiment 3

[0056] The method for breaking the emulsion in the present embodiment, the method is substantially identical to the first embodiment, and the difference is only: Step (4) New clay mineral seedlings solvent thermal synthesis: 2 g of iron chloride dissolved in 60 mL In the ethylene glycol solution, then 1 g of step (3) obtained by means of a modified embossed bump clay, 4 g sodium citrate and 2 g of polyethylene glycol, stirred for two minutes, using ultrasound cleaning gauges to disperse 10 min, stir even after stirring The mixture was transferred to a hydrothermal synthesis of the reaction kettle, and the constant temperature was reacted at 240 ° C for 20 h, remove the product, centrifugal, washed, and obtained a new type of iris sticky soil.

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Abstract

The invention relates to a novel clay mineral demulsifier, a preparation method thereof, and a method for demulsifying and recycling an oil-in-water crude oil emulsion. The preparation method comprises the following steps: mixing pretreated clay mineral with iron chloride, sodium citrate, ethylene glycol and polyethylene glycol, performing ultrasonic dispersing to uniformity, placing the obtainedmixture in a reactor with a PTFE lining, raising the reaction temperature in the reactor to 200-240 DEG C, carrying out a constant temperature reaction for 20-28 h, and cooling the obtained reaction product to obtain the demulsifier. The novel clay mineral demulsifier prepared in the invention is used for the demulsification and dehydration treatment of the oil-in-water crude oil emulsion, the demulsification efficiency on the water-in-oil crude oil emulsion reaches up to 99.0% or more, and the water content of removed water is less than 10 mg / L, and basically meets the discharge standards ofsecondary water. The demulsifier provides an inexpensive and efficient method for the demulsification and dehydration treatment of the oil-in-water crude oil emulsion, and has an excellent applicationprospect.

Description

Technical field [0001] The present invention is in crude oil, heavy oil demulsification processing art Viscosity Reducing the crude oil emulsion, clay minerals and particularly relates to a novel method for its preparation and a demulsifier for breaking water-in-oil type process emulsion, recycled method. Background technique [0002] Oil flooding water / steam flooding mining, mining process heavy oil emulsified viscosity reduction, oil sands and oil shale water based extraction method of hydraulic fracturing or steam injection methods are used a large amount of water or water vapor for processing. Water treatment technology is becoming one of the important strategies of traditional and unconventional oil and gas resources to enhance oil recovery. However, water treatment method, and the subsequent process of gathering a large amount of oil and water emulsions inevitable. Oil-water emulsion exists, first, increasing the burden on storage; Second, since the oil-water emulsion con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04
Inventor 刘娟陈志文李小成刘俊廖晓锋任嗣利
Owner JIANGXI UNIV OF SCI & TECH
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