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Device and method for separating and refining mixed liquids by using high-pressure plasma

A plasma and liquid technology, applied in the direction of electric separation of liquids, etc., can solve problems such as failure to achieve separation effect, unmaintainable electric field strength, decomposition of oil-water mixture, etc., and achieve low cost, low maintenance cost, and simple installation.

Inactive Publication Date: 2020-02-14
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this technology is used to treat oil-water mixtures with high water content, electrical breakdown will inevitably occur, which not only leads to the failure of the electric field strength, but also causes the oil-water mixture to decompose, resulting in separation failure
Limited by this, this type of technology can only deal with oil-water mixtures with low water content (the maximum water content cannot exceed 40%), and cannot handle oil-water mixtures with high water content at all.
Moreover, even when dealing with oil-water mixtures with low water content, this type of technology still cannot achieve a good separation effect

Method used

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  • Device and method for separating and refining mixed liquids by using high-pressure plasma
  • Device and method for separating and refining mixed liquids by using high-pressure plasma
  • Device and method for separating and refining mixed liquids by using high-pressure plasma

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Effect test

Embodiment 1

[0037] Such as figure 1As shown, the device 10 for separating and refining mixed liquid by using high-pressure plasma includes a liquid container 11, a high-voltage power supply 12, a plasma generating part 13, a conductive liquid discharge part 14, a non-conductive liquid discharge part 15, and a mixed liquid supply part 16 .

[0038] The liquid container 11 is used to contain the mixed liquid to be separated, and a conductive plate 11a of a ground electrode is provided at the bottom. In this embodiment, the liquid container 11 is made of a transparent acrylic plate; the mixed liquid is an oil-water mixture, and the conductive plate 11a is a copper plate.

[0039] The high-voltage power supply 12 is a DC high-voltage power supply with a voltage of 6000-10000V.

[0040] The plasma generator 13 is connected to the high-voltage power supply 12, includes at least one needle point 13a, and is vertically suspended directly above the mixed liquid. After electrification, the needl...

Embodiment 2

[0065] Such as Figure 4 As shown, the device 20 for separating and refining mixed liquids using high-pressure plasma includes a liquid storage container 21, a liquid separation platform 22, a liquid supply part 23, a high-voltage power supply 24, a plasma generation part 25, a non-conductive liquid collection part 26, a conductive Liquid collection part 27 and auxiliary separation part 28.

[0066] Water diversion openings 21 a and oil diversion openings 21 b are respectively provided on the left and right side walls of the liquid storage container 21 . The side wall provided with the water guide port 21a is marked as the first container wall 21c, and the side wall provided with the oil guide port 21b is marked as the second container wall 21d.

[0067] Such as Figure 4 and 5 As shown, the liquid separation platform 22 includes a first flow drainage plate 221 , a second flow drainage plate 222 and a plurality of conductive flow drainage areas 223 . The cross-sectional sh...

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Abstract

The invention provides a device and method for separating and refining mixed liquid by using high-pressure plasma. Efficient separation of conductive liquid and non-conductive liquid can be realized,moreover, the process is simple, the cost is low, and the energy consumption is also low. The device for separating and refining the mixed liquid by using the high-pressure plasma is characterized bycomprising a liquid container, a high-voltage power supply, a plasma generation portion, a conductive liquid drainage portion and a non-conductive liquid drainage portion, wherein the liquid containeris used for containing mixed liquid to be separated, and the bottom of the liquid container is provided with a conductive plate of a grounding electrode; the plasma generation portion is connected with the high-voltage power supply and comprises at least one needle tip suspended above the mixed liquid, the needle tip discharges to generate plasma after being electrified, the conductive liquid andthe non-conductive liquid in the mixed liquid are separated, and thus, the conductive liquid and the non-conductive liquid are layered and gathered; the conductive liquid drainage portion is arrangedon the liquid container and used for draining the layered conductive liquid; and the non-conductive liquid drainage portion is arranged on the liquid container and used for draining the layered non-conductive liquid.

Description

technical field [0001] The invention belongs to the technical field of liquid separation and refining, and in particular relates to a device for separating and refining mixed liquids by using high-pressure plasma, and a method for liquid separation and refining by using the device. Background technique [0002] With the increase of oil field production time, especially the production of shale gas, the water content in the produced fluid increases year by year, which brings new challenges to the existing treatment processes. In order to solve these problems, it is urgent to develop new oil-water separation technology to solve the bottleneck encountered by traditional technology. [0003] Currently known oil-water separation methods mainly include: gravity separation, centrifugal separation, distillation separation, adsorption separation (using the hydrophilicity of solid surface to promote oil-water separation), air flotation separation, etc., among which gravity separation, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/06
CPCB01D17/06
Inventor 汤朝晖汤强胡瑞恒苏凯
Owner WUHAN UNIV