Intelligent ash removal control method of bag type dust removing device

Abstract

The invention discloses an intelligent ash removal control method of a bag type dust removing device. According to the method, an ash removal procedure, dust removing device outlet discharge and overall dust removing device resistance are associated; a pressure difference transmitter is arranged to monitor the pressure difference balance condition of a bag chamber, such that the pressure difference of a bag type dust removing device is stable and small in fluctuation, the times of impacting on the filtering bag by compressed air are reduced, and the service life of the filtering bag is substantially prolonged; and according to the concentration of the dust real-timely collected at the air outlet, the upper and lower limit values of the pressure difference and the interval ash removal timeare adjusted so as to avoid the excessive ash removal action, protect the dust layer on the surface of the filtering bag, reduce the escape of ultrafine dust and the system energy consumption, prolongthe service life of the filtering bag, reduce the emission caused by ash removal to the maximum extent, and achieve the ultralow-concentration dust emission at the outlet.

Description

technical field [0001] The invention relates to the field of bag dust collectors, in particular to an intelligent dust removal control method for bag dust collectors. Background technique [0002] The working principle of the bag filter is "filtering-cleaning-filtering". Filtration is to achieve gas-solid separation through the filter bag and remove dust particles in the dusty gas. Dust cleaning is to remove the accumulated dust on the filter bag through pulsed compressed air. Restore the filter performance of the filter bag. The cleaning process includes: closing the off-line valve of a certain cleaning unit, spraying compressed air into the inside of the filter bag to remove the accumulated dust on the outer surface of the filter bag, opening the off-line valve, and the cleaning unit returns to the filtering state again. Most of the traditional dust cleaning is timing cleaning, and the cleaning action of each unit is completed according to the set cleaning cycle or unit i...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an intelligent dust removal control method for bag filter, which solves the defects of traditional timing dust removal, stable pressure difference, small fluctuation, and reduces the number of times the filter bag is impacted by compressed air. Bag life greatly extended

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