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Cleaning agent for ceramic filter plate and cleaning method thereof

A cleaning agent and filter plate technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve problems ranging from a few days to less than a month, ineffective, expensive, etc., to reduce cleaning frequency , restore the filtration flux, and reduce the effect of concentration polarization

Inactive Publication Date: 2013-02-27
TONGLING HUAXING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the equipment is designed with nitric acid cleaning, ultrasonic cleaning, and clean water backwashing devices, and is used every 8-10 hours, a set of ceramic filter plates will be discarded due to complete blockage
And trying all kinds of ceramic plate cleaning techniques that are currently available are ineffective
The publication number of the Chinese patent document is CN1978616A, and the name is a cleaning agent for cleaning the ceramic filter plate> It is exactly this type of problem to try to solve, but the effect is also unsatisfactory
In the process of incomplete clogging, the filtration output is greatly affected, and the cost of replacing a set of ceramic filter plates is expensive, with an average of more than 5,000 yuan per square meter

Method used

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  • Cleaning agent for ceramic filter plate and cleaning method thereof
  • Cleaning agent for ceramic filter plate and cleaning method thereof
  • Cleaning agent for ceramic filter plate and cleaning method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Cleaning step one:

[0019]

[0020] the rest is water;

[0021] Cleaning: Use a pump to send component A of the cleaning agent to the tank of the filter until it is 5cm below the overflow port, start the filter rotor, drive the filter plate to rotate, the ceramic filter plate passes through the tank periodically, and start the ultrasonic waves intermittently The cleaning device cleans, the intermittent time can be set to 20min / h, and component A is discharged after cleaning for 0.5-1h;

[0022] Cleaning step two:

[0023]

[0024]

[0025] the rest is water;

[0026] Cleaning: Use the pump to send the component B of the cleaning agent to the tank of the filter until it is 5cm below the overflow port, start the rotor of the filter, drive the filter plate to rotate, the ceramic filter plate passes through the tank periodically, and enable joint cleaning, The intermittent time can be set to 20min / h, after cleaning for 1-1.5h, component B is discharged, and the...

Embodiment 2

[0028] Cleaning step one:

[0029]

[0030] the rest is water;

[0031] Cleaning method: Use a pump to send component A of the cleaning agent to the tank of the filter until it is 5cm below the overflow port, start the rotor of the filter, drive the filter plate to rotate, and the ceramic filter plate passes through the tank periodically and starts intermittently Ultrasonic cleaning device cleaning, the intermittent time can be set to 20min / h, and component A is discharged after cleaning for 0.5-1h;

[0032] Cleaning step two:

[0033]

[0034]

[0035] Cleaning: Use the pump to send the component B of the cleaning agent to the tank of the filter until it is 5cm below the overflow port, start the rotor of the filter, drive the filter plate to rotate, the ceramic filter plate passes through the tank periodically, and enable joint cleaning, The intermittent time can be set to 20min / h, and component B is discharged after cleaning for 1-1.5h; the whole cleaning is compl...

Embodiment 3

[0037] Cleaning step one:

[0038]

[0039] the rest is water;

[0040] Cleaning: Use a pump to send component A of the cleaning agent to the tank of the filter until it is 5cm below the overflow port, start the filter rotor, drive the filter plate to rotate, the ceramic filter plate passes through the tank periodically, and start the ultrasonic waves intermittently The cleaning device cleans, the intermittent time can be set to 20min / h, and component A is discharged after cleaning for 0.5-1h;

[0041] Cleaning step two:

[0042]

[0043] the rest is water;

[0044] Cleaning method: use the pump to send the component B of the cleaning agent to the tank of the filter until it is 5cm below the overflow port, start the rotor of the filter, drive the filter plate to rotate, the ceramic filter plate passes through the tank periodically, and enable combined cleaning , the intermittent time can be set to 20min / h, after cleaning for 1-1.5h, component B is discharged; the whol...

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Abstract

The invention discloses a cleaning agent for a ceramic filter plate and a cleaning method thereof. The cleaning agent comprises two parts of an A component and a B component, wherein the A component is formed by dissolving the following components in percentage by weight: 5-20% of industrial sulfuric acid, 0.5-4% of 40% hydrofluoric acid, 0.01-0.05% of hexamethylene tetramine, 0.0001-0.001% of sodium metavanadate, and the remaining of water; and the B component is formed by dissolving the following components in percentage by weight: 1-5% of oxalic acid, 0.1-0.2% of 40% hydrofluoric acid, 0.001-0.005% of hexamethylene tetramine, and the remaining of water. In the invention, the concentration polarization of a membrane surface is greatly reduced; the cleaning frequency of the ceramic filter plate is reduced; the filtration flux of the ceramic filter plate is restored; a system is regenerated; and the service life of the ceramic filter plate is prolonged.

Description

technical field [0001] The invention relates to a cleaning agent and a cleaning method for a ceramic filter plate. Background technique [0002] Ceramic filter is a new type of equipment that uses capillary principle to separate solid and liquid. The size of ceramic micropores is generally 0.1-10um. During the production process, the filter cake is adsorbed on the surface of the ceramic filter plate, and the filtrate is sucked away through the microspace of the ceramic filter plate, and the cycle is repeated. [0003] When the ceramic filter is used in the solid-liquid separation of the slurry after magnetic gravity separation of sulfuric acid slag, part of the gangue minerals in the sulfur concentrate will usually be converted into water-soluble salts during the boiling roasting process, such as FeSO 4 , CaSO 4 , AL 2 (SO 4 ) 3 , MnSO 4 and soluble SiO 2 and other compounds, so the composition of the slurry liquid is complex, and the content of metal impurity ions is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D29/66B01D33/48
Inventor 张健潘健罗自力叶丽君
Owner TONGLING HUAXING CHEM
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