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Sintered filter core cleaning device and method

A technology of sintered filter elements and cleaning devices, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of reducing equipment service life, affecting filtration efficiency, and high degree of impurity adhesion, so as to extend the cycle of off-line cleaning , optimize the treatment process, improve the effect of service life

Inactive Publication Date: 2014-07-09
DALIAN KANGSAIPU TECH DEV
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Problems solved by technology

[0002] The pre-spinning filter used for viscose fiber generally adopts high-precision metal sintered filter elements. After a period of use, impurities in the polymer melt will gradually block the filter element gap, increase the filtration pressure difference, and affect the filtration efficiency. , it is necessary to eliminate the clogging phenomenon caused by impurities inside the pores of the filter element, so that the filter element can be regenerated to restore the filtration performance
At present, the conventional online backwashing method is used to clean the filter element. Due to the high degree of adhesion of impurities, the effect of backwashing is limited. service life

Method used

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  • Sintered filter core cleaning device and method

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Embodiment Construction

[0017] Such as figure 1 Shown, the specific embodiment of the present invention mainly comprises the following steps: soaking with solvent dimethylacetamide is full of solvent tank, the metal powder sintered filter core of viscose spinning is taken out from filter and puts into solvent tank to soak 12-24 hours, the temperature is controlled at 90°C, so that the viscose on the surface of the filter element and in the pores is fully dissolved, soaked and dried naturally. Put the filter element into the heating furnace, slowly heat up at 100-350°C, control the baking time at 2-4 hours, remove organic dirt, carbonize the polymer in the micropores, and take it out after cooling down. Put the filter element into the lye tank of 5-15% sodium hydroxide solution, boil it, and soak in lye for 2-4 hours. Take out the filter element from the lye tank, use a high-pressure water gun to repeatedly rinse the filter element from the outside to the inside, and from the inside to the outside of...

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Abstract

The invention discloses a sintered filter core cleaning device and method. The device includes a solvent tank, a heating furnace, an alkali liquor tank, a swashing tank and a cleaning tank. The method comprises soaking, baking, alkali cleaning, high-pressure water cleaning, ultrasonic cleaning and high-pressure water cleaning. On a principle of not destroying a sintered filter core material and structure, and aiming at defects and weaknesses existing in a conventional sintered filter core cleaning device, improvement and reinforcement are carried out; and through optimization of a control method of the conventional device, the whole device has good regeneration effect, the filter core off-line cleaning period is prolonged, the off-line backwashing frequency is reduced, the service life of a filter core and equipment are improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a filter element regeneration technology, in particular to a cleaning device and method for a viscose fiber pre-spinning filter sintered filter element. Background technique [0002] The pre-spinning filter used for viscose fiber generally adopts high-precision metal sintered filter elements. After a period of use, impurities in the polymer melt will gradually block the filter element gap, increase the filtration pressure difference, and affect the filtration efficiency. , It is necessary to eliminate the clogging phenomenon caused by impurities inside the pores of the filter element, so that the filter element can be regenerated to restore the filtration performance. At present, the conventional online backwashing method is used to clean the filter element. Due to the high degree of adhesion of impurities, the effect of backwashing is limited. service life. Contents of the invention [0003] The purpose of the present inve...

Claims

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Application Information

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IPC IPC(8): B01D41/04
Inventor 方秀兵
Owner DALIAN KANGSAIPU TECH DEV
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