On-line gas cleaning method for ceramic filter

Abstract

The invention discloses an on-line gas cleaning method for a ceramic filter. A medium for on-line cleaning is a compressed gas. The on-line gas cleaning system for the ceramic filter adopts the compressed gas as the cleaning medium, has no impurities in the cleaning process, has small resistance in the pipeline, high speed and small pressure oscillation, and has obvious cleaning effect on the ceramic plate so that the attenuation of the ceramic plate can be slower. The working efficiency of the ceramic filter can be improved by 20 to 30 percent. And everyday a mass of cleaning water can be saved.

Description

technical field [0001] The invention relates to an online cleaning method of a ceramic filter. Background technique [0002] Ceramic filter is a new type of solid-liquid separation equipment integrating electromechanical, microporous ceramics, automatic control, ultrasonic cleaning and other high-tech. It is widely used in mineral processing, chemical industry, coal, metallurgy, sewage treatment and other industries. [0003] When the ceramic filter works, microporous ceramics are used as the filter medium, such as figure 1 As shown, after passing through slurry suction zone I, vacuum drying zone II, and unloading zone III, the ceramic plate enters backwash zone IV, which is the online gas cleaning zone. The pipeline, through the pressure adjustment, enters the inner cavity of the ceramic plate from the distribution valve, cleans the micropores of the ceramic plate from the inside out, and at the same time washes down the residual minerals remaining on the surface of the ce...

AI Technical Summary

Problems solved by technology

[0004] However, the use of cleaning water to backwash the ceramic plate requires high water quality for the backwash water, and the impurity content of the backwash water is required to be less than 50ppm, otherwise it will easily cause the blockage of the ceramic plate; Friction and the filter in the pipeline are affected by pollution and blockage, and the pressure loss is large, resulting in unstable backwash water pressure and water volume that finally enters the inner cavity of the ceramic plate, the cleaning effect of the ceramic plate is not obvious, and the attenuation speed is fast; And for the filtration of ultra-fine materials, the effect of backwashing with water is poor, and it is not easy to dredge after the ceramic plate decays

At the same time, while the backwash water cleans the ceramic plate from the inside to the outside, the backwash water also enters the tank of the ceramic filter, thereby diluting the concentration of the pulp in the tank and affecting the working efficiency of the ceramic filter.

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