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Regeneration cleaning process of combined filter element

A filter element and process technology, which is applied in the field of regenerative cleaning process of combined filter elements, can solve problems such as environmental pollution, non-standard cleaning process, unfavorable large-scale production, etc., and achieve the effect of simple and clear process

Active Publication Date: 2019-11-22
WESTERN BAODE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a regenerative cleaning process for combined filter elements, which solves the problem of incomplete cleaning of long-chain hydrocarbons, oil coke, and mixed stubborn dirt of solid particle impurities, serious environmental pollution, and poor cleaning process in the prior art. Specifications and many other issues that are not conducive to large-scale production

Method used

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  • Regeneration cleaning process of combined filter element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Step 1, pretreatment: the filter element to be cleaned is placed in a solution with a pH value of 6.5 consisting of 2% polyethylene glycol, 5% fatty acid monoglyceride, 0.1% Tween and water in a mass fraction. Treat for 30 minutes at 60°C and ultrasonic frequency 20KHz;

[0045] Step 2. Transition treatment: use 20KHz ultrasonic cleaning to clean the filter element treated in step 1, wherein the water used is purified water filtered through a 5-10 μm filter screen;

[0046] Step 3, conversion treatment: at room temperature, soak the filter element treated in step 2 with an aqueous solution containing 10% sodium hydroxide, that is, the conversion solution, for 5 minutes;

[0047] Step 4. Transition treatment: 40KHz ultrasonic cleaning is used to clean the filter element treated in step 1, wherein the water used is purified water filtered through a 5-10 μm filter screen;

[0048] Step 5, fine treatment: immerse the filter element treated in step 4 into 5% ethylenediamine...

Embodiment 2

[0053] Step 1, pretreatment: the filter element to be cleaned is placed in a solution with a pH value of 7.5 consisting of 3% polyethylene glycol, 1% fatty acid monoglyceride, 3.0% Tween and water in a mass fraction. Treat for 5 minutes at 80°C and ultrasonic frequency 60KHz;

[0054] Step 2. Transition treatment: 60KHz ultrasonic cleaning is used to clean the filter element treated in step 1, wherein the water used is purified water filtered through a 5-10 μm filter screen;

[0055] Step 3, conversion treatment: at room temperature, soak the filter element treated in step 2 with an aqueous solution containing 0.1% sodium hydroxide, that is, the conversion solution, for 10 minutes;

[0056] Step 4. Transition treatment: use 50KHz ultrasonic cleaning to clean the filter element treated in step 1, wherein the water used is purified water filtered through a 5-10 μm filter screen;

[0057] Step 5, fine treatment: immerse the filter element treated in step 4 into 1% ethylenediamin...

Embodiment 3

[0062] Step 1, pretreatment: the filter element to be cleaned is placed in a solution with a pH value of 7.0 consisting of 2.5% polyethylene glycol, 3.0% fatty acid monoglyceride, 1.5% Tween and water in a mass fraction. Treat for 17 minutes at 70°C and ultrasonic frequency 40KHz;

[0063] Step 2. Transition treatment: Use 3MPa high-pressure water to wash the filter element treated in step 1, wherein the water used is purified water filtered through a 5-10 μm filter screen;

[0064] Step 3, conversion treatment: at room temperature, use an aqueous solution containing 5% sodium hydroxide, that is, the conversion solution, to soak the filter element treated in step 2 for 8 minutes;

[0065] Step 4. Transition treatment: use 6MPa high-pressure water to wash the filter element treated in step 1, wherein the water used is purified water filtered through a 5-10 μm filter screen;

[0066] Step 5, fine treatment: immerse the filter element treated in step 4 into 3% ethylenediaminetet...

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Abstract

The invention discloses a regeneration cleaning process of a combined filter element. The regeneration cleaning process comprises the following steps: performing pretreatment in a solution consistingof a dispersing agent, an emulsifying agent, a cosolvent and water; performing ultrasonic treatment or high-pressure water washing as transition treatment; performing conversion treatment in a conversion solution prepared from strongly basic sodium salt; performing ultrasonic treatment or high-pressure water washing as transition treatment; carrying out fine treatment in a solution consisting of achelating agent, a corrosion inhibitor, a surfactant and water; performing ultrasonic treatment or high-pressure water washing as transition treatment; performing post-treatment in an aqueous solution containing a passivator and a brightener; then, performing ultrasonic treatment or high-pressure water washing; and finally drying the filter element. Through the process, the filtering element is cleaned more thoroughly, the filtering performance of the cleaned element is close to that of a new product, the cleaning agent is free of pollution to the environment and can be recycled, the cleaningoperation process is safe, the process is simple and clear, and the process is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of filter cleaning, and in particular relates to a regenerative cleaning process of a combined filter element. Background technique [0002] Filter is a separation device that can realize liquid-solid, gas-solid, gas-solid-liquid separation to meet production requirements. It is widely used in chemical, petroleum, pharmaceutical, electric power, environmental protection and other fields, such as wastewater treatment, reclaimed water reuse, high temperature Dust removal, oil slurry filtration, circulating water treatment, product concentration, recovery of valuable substances, etc., play an extremely important role in industrial production and life. [0003] The filter is composed of housing, filter element, control system and other parts. The material to be filtered enters the shell from the feed port, and driven by the pressure difference, the material with a smaller particle size passes through the filter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D41/04
CPCB01D41/04
Inventor 李虎丛轮刚刘文海刘高建袁英佘勃强张立峰
Owner WESTERN BAODE TECH CO LTD
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