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Forward and reverse alternating filtering and separating device

A filter separation, forward and reverse technology, applied in the separation and purification of gas-liquid and gas-solid-liquid, solid-liquid, gas-solid fields, can solve the problems of increased investment costs, error-prone, large floor space, etc., to improve operating efficiency, The effect of prolonging the service life and reducing the investment cost

Pending Publication Date: 2019-09-10
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of the above two cleaning solutions, the former needs to disassemble the filter element, which is a cumbersome process; the latter needs to be equipped with cumbersome external pipelines, and the switching operation of multiple valves is cumbersome and error-prone, which increases construction and maintenance costs
The problem of clogging in the actual filtration process has not been solved well
Use the method of sedimentation to remove particulate matter, but because the sedimentation velocity of general particulate matter is very low, the settling tank required to be designed often needs to be very large, resulting in unfavorable factors such as large footprint and increased investment costs.

Method used

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  • Forward and reverse alternating filtering and separating device
  • Forward and reverse alternating filtering and separating device

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The first preferred embodiment of the forward and reverse alternate filtration and separation device of the present invention includes an inlet, an outlet, and at least one pair of separation assemblies; each pair of separation assemblies includes a forward feed liquid inlet control valve K1, a first separation Column 1, reverse filtrate outlet control valve K3, forward filtrate outlet control valve K4, second separation column 2, and reverse feed liquid inlet control valve K2; the first separation column includes a first hollow cylinder 11, a In the first hollow cylinder 11 and the first filter cartridge 12 with the bottom opening facing upward, and the first inverted T-shaped pipeline 13 extending into the first filter cartridge 12 at the top; The cylinder 12 is used to divide the first hollow cylinder 11 into upper and lower parts, wherein the upper part is the first filtrate area, and the lower part is the first filter residue area; the bottom of the first filter res...

Embodiment 2

[0044] figure 2 Shown is the second embodiment of the forward and reverse alternate filtration separation device of the present invention, and the separation device is composed of a pair of basic separation components. The only difference from Embodiment 1 is that the positions of the first filtrate outlet 16 and the second filtrate outlet 26 are respectively arranged on the upper part of the first filtrate area and the second filtrate area, and in the first filtrate area and the second filtrate area The top is respectively provided with a first exhaust port 17 and a second exhaust port 27 . The basic operating principle is generally the same as that of Example 1, except that the exhaust port is added as a gas outlet, and the gas is discharged from the top, so that the separation device described in this example can be used for the separation of solid-liquid-gas three-phase mixture, such as Defoaming process.

Embodiment 3

[0046] The third embodiment of the forward and reverse alternating filtration and separation device of the present invention includes more than two pairs of filters with different membrane apertures such as figure 1 or figure 2 The separation assembly of the structure shown; the separation assembly is serially connected in series according to the order of filter membrane aperture from large to small; and the filter membrane aperture of the first pair of separation assemblies connected to the inlet is the largest, and the The last pair of separation components connected to the outlet has the smallest filter mesh membrane pore size, thereby realizing graded filtration.

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PUM

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Abstract

The invention discloses a forward and reverse alternating filtering and separating device, which comprises an inlet, an outlet and at least one pair of separating assemblies. Each pair of the separating assemblies includes a forward material liquid inlet control valve, a first separation column, a reverse filtrate outlet control valve, a forward filtrate outlet control valve, a second separation column, and a reverse material liquid inlet control valve; the inlet communicates with the forward material liquid inlet control valve and the reverse material liquid inlet control valve; the outlet communicates with the forward filtrate outlet control valve and the reverse filtrate outlet control valve. The forward and reverse alternating filtering and separating device can make full use of the forward and reverse filtering surfaces of the filter net film through the forward and reverse alternating feeding so as to achieve the purpose of backwashing while filtering and avoid clogging of the filter net film.

Description

technical field [0001] The invention relates to the technical field of separation and purification of gas-solid, solid-liquid, gas-liquid and gas-solid-liquid, in particular to a forward and reverse alternate filtration separation device. Background technique [0002] Filtration and sedimentation are common means of sewage treatment. Common filtration methods are: Dalton clarifier, sand filter, hydrocyclone separator, bag filter, inclined plate settler, tubular membrane or hollow fiber membrane filter, ceramic membrane filter, etc. The commonly used filtration process in industry generally adopts one or a simple combination of the above filtration forms. When the filter device runs for a period of time, the insoluble impurities will automatically form a filter cake on the filter surface, that is, a self-generated dynamic film. This self-generating dynamic membrane has both good and bad aspects for the filtration process. The good side is to improve the filtration accuracy...

Claims

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Application Information

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IPC IPC(8): B01D36/04B01D50/00
CPCB01D36/04B01D50/20
Inventor 袁军王存文程健郭嘉贾丽慧张富青
Owner WUHAN INSTITUTE OF TECHNOLOGY
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