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Method for cleaning filter bag for cloth-bag or electric-bag dust collector

A dust collector and filter bag technology, which is applied in the cleaning field of filter bags for cloth bags or electric bag dust collectors, can solve the problems affecting the service life of filter bags, the stable operation of dust collectors, the increase of dust removal resistance/pressure difference of filter bags, and the surface area of ​​filter bags. Too much dust and other problems, to shorten the cleaning cycle, reduce energy consumption, and restore the effect of air permeability

Active Publication Date: 2013-10-30
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual use of the filter bag, there will be a series of problems, such as: too much dust on the surface of the filter bag, soot compaction, etc., which will not only increase the resistance / pressure difference of the filter bag to clean the dust, but also shorten the cleaning cycle and increase the energy. In severe cases, it will even affect the service life of the filter bag and the stable operation of the dust collector

Method used

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  • Method for cleaning filter bag for cloth-bag or electric-bag dust collector
  • Method for cleaning filter bag for cloth-bag or electric-bag dust collector
  • Method for cleaning filter bag for cloth-bag or electric-bag dust collector

Examples

Experimental program
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Effect test

Embodiment 1

[0016] A method for cleaning a filter bag for a cloth bag or an electric bag filter, comprising the following steps:

[0017] ① Cut out old filter bags of suitable size for fracture strength test (test method adopts GB / T3923.1-1997), the results are shown in Table 1. It can be seen from Table 1 that the radial and latitudinal fracture strengths are not less than 400N, then The next test step can be carried out.

[0018]

[0019] ②Cut 100cm 2 The sample of the above-mentioned filter bag was cleaned with a vacuum cleaner until there was no obvious dust on the surface, then soaked in 250ml of water, and the pH value and ion concentration of the soaking solution were measured (the ion concentration was measured by plasma emission spectrometer-ICP). The results are shown in Table 2. From the analysis results, it can be seen that, except for Cl - In addition, if all other components are out of the specified range, it is determined that the filter bag needs to be cleaned. The p...

Embodiment 2

[0025] A method for cleaning a filter bag for a cloth bag or an electric bag filter, comprising the following steps:

[0026] ①Intercept old filter bags of suitable size for fracture strength test (test method adopts GB / T3923.1-1997), the results are shown in Table 4, it can be seen from Table 4 that the radial and latitudinal fracture strengths are not less than 400N, then The next test step can be carried out.

[0027]

[0028] ②Cut 50cm 2 The sample of the above-mentioned filter bag was cleaned with a vacuum cleaner until there was no obvious dust on the surface, then soaked in 125ml of water, and the pH value and ion concentration of the soaking solution were measured (the ion concentration was tested by plasma emission spectrometer-ICP). The results are shown in Table 5. From the analysis results, it can be seen that, except for Cl - In addition, if all other components are out of the specified range, it is determined that the filter bag needs to be cleaned. The pH ...

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Abstract

The invention relates to a method for cleaning a filter bag for a cloth-bag or electric-bag dust collector, which comprises the following steps: (1) clearing surface dust of the filter bag of which the breaking strength is not less than 400N, then, soaking an intercepted small sample into water, measuring the pH value and the ion concentration of soak solution, and if the pH value of the soak solution is less than 5 or in gteater than 9, or F<-> is greater than 2.0mg / l, Cl<-> is greater than 250mg / l, NO3<-> is greater than 30mg / l, SO42<-> is greater than 350mg / l and PO43<-> is greater than 3mg / l in the soak solution, judging that the filter bag needs to the cleaned; (2) firstly, clearing a surface pressed powder layer of the complete filter bag by using compressed air, then, clearing the surface dust by using the dust collector, then, shifting the filter bag into an ultrasonic instrument holding detergent solution for cleaning, washing with the water after the cleaning is completed, and drying in a drying oven. After being cleaned by adopting the method, the filter bag can be recovered in air permeability, the dust clearing period is shortened, corrosive ions remaining in the filter bag are removed, and the service life of the filter bag is prolonged.

Description

technical field [0001] The invention relates to a cleaning method of a filter bag for a cloth bag or an electric bag dust collector, in particular to a cleaning method including the steps of preliminary judgment of the performance of the filter bag, analysis of the properties of the filter material, selection of cleaning agent, cleaning, drying, and analysis and evaluation of the washing effect. The cleaning process is widely applicable to the cleaning of various cloth bags or filter bags of electric bag dust collectors. Background technique [0002] With the country's emphasis on energy conservation and emission reduction, the country's strict and specific emission standards for air pollutants in various industries, a series of policies have begun to be issued frequently. At the end of 2003, the State Environmental Protection Administration issued the newly revised pollutant discharge standard GB13223-2003 "Emission Standard of Air Pollutants for Thermal Power Plants", whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B3/12
Inventor 李东梅郭阳董雪峰吴文龙周晓湘
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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