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A kind of demulsification method of w/o emulsion

An emulsion and demulsification technology, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of difficult recovery, large equipment volume, and high cost, and achieve wide application prospects, large process capacity, and low processing costs. low effect

Active Publication Date: 2022-02-18
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment required for the gravity method is large, and it takes a long time and low efficiency to settle by gravity; the adsorption method, the flotation method and the chemical method all need to add chemical reagents, which is difficult to recycle, and is likely to cause secondary pollution to the environment; the biological oxidation method is harmful to the environment. Harsh requirements, unstable strains and high cost

Method used

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  • A kind of demulsification method of w/o emulsion
  • A kind of demulsification method of w/o emulsion
  • A kind of demulsification method of w/o emulsion

Examples

Experimental program
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Effect test

Embodiment 1

[0034] This embodiment discloses a demulsification device for the demulsification method of a W / O emulsion, such as figure 1 As shown, during use: put the abrasive particles and the W / O emulsion in the storage tank 15 before starting, and stir and mix them evenly with the agitator 16 . The positive pole and the negative pole of the power generating device 1 are connected to the first insulated electrode 3 and the second insulated electrode 4 respectively through the insulated wire 2, and the first insulated electrode 3 is inserted into the annular gap 21 through the socket 20 to the bottom end of the annular gap 21. The bracket 6 is fixed, and the second insulated electrode 4 is inserted into the cyclone device through the oil outlet 5 to the bottom of the small cone section 19 and fixed by the bracket 6 . Close the valve of the liquid outlet 10 , inject the electrolyte solution into the annular gap 21 from the liquid inlet 7 and fill the annular gap 21 . The demulsification ...

Embodiment 2

[0036] This embodiment discloses a method for demulsifying a W / O emulsion. The demulsification operation steps for a W / O emulsion include:

[0037] (1) Use a stirrer to evenly distribute the abrasive particles in the W / O emulsion. The speed of the stirrer is 50-100r / min, and the W / O emulsion is stirred at a speed of 50-100r / min. On the one hand, in order to avoid the further emulsification effect of the W / O emulsion, on the other hand, the abrasive particles can be fully and evenly distributed in the W / O emulsion, and the abrasive particles are particles of hydrophilic and oleophobic materials. The hydrophilic and oleophobic material is silica material or zeolite material. The abrasive particles of this material can promote the full phase separation of oil and water; the particle size of the abrasive particles is 0.5mm-8mm, and the abrasive particles The diameter of the abrasive particle should not be too large or too small. If the particle size of the abrasive particle is too...

Embodiment 3

[0042] This example discloses a method for demulsifying a W / O emulsion based on Example 1 or Example 2. The specific steps are: abrasive particles: silicon dioxide particles; the W / O emulsion is : The organic phase is 2000 mL of kerosene + 3000 mL of tributyl phosphate, the internal water phase is 1000 mL of wet-process phosphoric acid, and the volume ratio of oil and water is 5:1; the feed volume flow rate of W / O emulsion is 14.5 L / min; NaCl solution was injected into the gap; the pulse electric field strength and frequency were 5 kV / cm and 700 Hz, respectively. The demulsification experiment was carried out under the above experimental conditions. After the demulsification, the oil-water two phases were respectively connected to a measuring cylinder through the hoses connected to the oil outlet and the water outlet, and the volumes of the oil-water two phases were read. The experimental results are shown in the table below. It can be seen from the table that the demulsificat...

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Abstract

The invention discloses a demulsification method for W / O emulsion. The operation method for demulsification of W / O emulsion comprises: uniformly distributing hydrophilic and oleophobic abrasive particles in the W / O emulsion through a stirrer; Using a swirl device to generate a swirl field in the mixture of abrasive particles and W / O emulsion; using a power generating device to generate an electrostatic field in the mixture of abrasive particles and W / O emulsion; Under the synergistic action with abrasive particles, collisions occur between water droplets, between water droplets and abrasive particles, and between abrasive particles and abrasive particles. The water phase and the continuous oil phase gather at the axis of the cyclone to form an oil core, and finally realize the oil-water phase. The beneficial effects of the invention are that no special harsh conditions are used, the work is reliable, the processing capacity is large, the processing cost is low, and the processing can be continuously processed; the abrasive particles are cheap and easy to obtain, easy to separate from the water phase, and can be recycled, and has wide application prospects .

Description

technical field [0001] The invention relates to the field of heterogeneous phase separation, oil-water two-phase separation technology, in particular to a method for accelerating the demulsification of W / O emulsion through the synergistic effect of a swirling field, an electrostatic field and abrasive particles. Background technique [0002] At present, a large amount of W / O emulsion will be produced in industrial fields such as crude oil extraction and refining, aviation fuel production, food processing, and mechanical processing. If left untreated, it will reduce the quality of crude oil, corrode and damage pipelines and mechanical equipment, and direct discharge will seriously damage the environment and ecology. Effectively remove the water in the oil body and refine the oil products is always the goal pursued by researchers. [0003] Traditional demulsification methods include: gravity method, adsorption method, flotation method, biological oxidation method, chemical me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/04B01D17/06B01D17/05
CPCB01D17/047B01D17/041B01D17/06
Inventor 曹语晴金央李军周堃
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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