CN216092477U

CN216092477U - Pressure filter for titanium dioxide water washing process production

Info

Publication number: CN216092477U
Application number: CN202122287220.5U
Authority: CN
Inventors: 吴争鸣; 董海瑞; 吴颖慧
Original assignee: Nanjing Yimin New Material Technology Co ltd
Current assignee: Nanjing Yimin New Material Technology Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-03-22
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a pressure filter for titanium dioxide water washing process production, which comprises a micropore device, wherein the micropore device comprises a micropore filter pipe, a cavity is arranged in the micropore filter pipe, a plurality of micropores are arranged on the pipe wall of the micropore filter pipe, the micropores are connected with the cavity, the micropore device is inserted into a solid-liquid separation tank from top to bottom, and the solid-liquid separation tank is connected with a chemical infusion pump and a gas compressor; compared with the traditional microporous filter pipe, the microporous filter pipe is made of special nonmetal high-temperature-resistant acid-resistant materials, so that the service life of the microporous filter pipe is prolonged, the running cost of a machine is reduced, and the washing efficiency of titanium dioxide is improved; compared with the traditional washing process, the utility model adopts special microporous equipment to replace the traditional vacuum leaf filter, thereby saving a large amount of clean water.

Description

Pressure filter for titanium dioxide water washing process production

Technical Field

The utility model relates to a pressure filter for titanium dioxide water washing process production.

Background

The purpose of water washing in the production of titanium dioxide by a sulfuric acid method is to carry out liquid-solid separation by utilizing the water insolubility of metatitanic acid and the water solubility of impurity ions, thereby removing a large amount of non-titanium soluble impurities and free sulfuric acid in mother liquor except for metatitanic acid and obtaining pure metatitanic acid.

Most of the existing impurity removal processes still adopt the impurity removal processes of the last century, and the water washing filtration is carried out on the metatitanic acid by adopting a mode of matching a vacuum leaf filter with filter cloth.

When the filter cloth is used for filtering operation, the filter cloth can expand, deform or be damaged after being used for many times, and the pore diameter of the filter cloth can be changed, so that the phenomenon of filter penetration is generated. Therefore, the filter cloth needs to be replaced in time after being used for many times, otherwise the filtering effect is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides the pressure filter for titanium dioxide water washing process production.

The utility model provides a pressure filter for titanium white powder washing process production, includes that the micropore is equipped, the micropore equip including the millipore filtration pipe, the inside of millipore filtration pipe is equipped with the cavity, is equipped with a plurality of micropore on the pipe wall of millipore filtration pipe, the micropore links to each other with the cavity, the micropore equip from last inside to inserting the solid-liquid separation jar down, the tank deck of solid-liquid separation jar link to each other with gas compressor, the bottom side links to each other with the head tank through inserting chemical pump.

As a further improvement, the microporous filter pipe is made of a non-metal high-temperature-resistant material.

As a further improvement, the microporous filter tube is in an annular array.

As a further improvement, the upper part of the solid-liquid separation tank is cylindrical, the lower part of the solid-liquid separation tank is conical, and the bottom of the solid-liquid separation tank is provided with a discharge valve.

As a further improvement, the micropore filter tube is formed by micropores formed by sintering.

As a further improvement, the solid-liquid separation tank is connected with an air compressor through a compressed air main pipe.

As a further improvement, the solid-liquid separation tank is connected with a metatitanic acid raw material tank through a chemical infusion pump.

Has the advantages that:

1. compared with the traditional microporous filter pipe, the microporous filter pipe is made of special nonmetal high-temperature-resistant acid-resistant materials, so that the service life of the microporous filter pipe is prolonged, the running cost of a machine is reduced, and the washing efficiency of titanium dioxide is improved.

2. Compared with the traditional washing process, the utility model adopts special microporous equipment to replace the traditional vacuum leaf filter, and a vacuum pump system is not required, thereby saving energy.

3. Compared with the traditional washing process, the utility model completes the acid separation of the hydrolyzed metatitanic acid and the impurity removal process of the metatitanic acid after the acid separation in a sealed tank body. A plurality of metatitanic acid square pools and water washing square pools are saved, and the clean and civilized production environment is improved.

4. Compared with the vacuum leaf filter, the vacuum leaf filter needs to be frequently lifted and moved to square ponds with different functions to complete different processes when the water washing process is completed. The pressure filter is stationary in the production process of the titanium dioxide washing process, so that the running cost is saved.

5. Compared with a vacuum leaf filter, when the microporous filter is used for filtering and washing, the self-cleaning of the microporous filter can be carried out together with the falling of materials, so that the working procedures are saved, the washing efficiency is improved, and the production cost is reduced.

6. Compared with the frequent replacement of filter cloth in a vacuum leaf filter, the micropore in the micropore equipment used in the process can not change the aperture after being used for many times, so the micropore device can be used for many times, can still maintain stable filtering capacity after being chemically cleaned, and has longer service life.

Drawings

FIG. 1 is a schematic diagram of the general structure of a pressure filter for titanium dioxide water washing process production;

1. microporous filter pipe 2 solid-liquid separation tank

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

As shown in figure 1, the pressure filter for titanium dioxide water washing process production comprises a microporous filter pipe 1 and a solid-liquid separation tank 2.

The utility model provides a pressure filter for titanium white powder washing process production, includes a pressure filter who is used for titanium white powder washing process production, including the micropore equipment, the micropore equipment include microporous filter pipe 1, microporous filter pipe 1's inside is equipped with the cavity, is equipped with a plurality of micropore on microporous filter pipe 1's the pipe wall, the micropore links to each other with the cavity, the micropore equipment from last inside to inserting solid-liquid separation jar 2 down, solid-liquid separation jar 2 link to each other with gas compressor, microporous filter pipe 1 is nonmetal high temperature resistant material, microporous filter pipe 1 is annular permutation, 2 upper portions of solid-liquid separation jar are conical for cylindrical lower part, microporous filter pipe 1 forms the micropore through the sintering, solid-liquid separation jar 2 links to each other with air compressor through compressed air house steward, is connected with metatitanic acid raw material jar through the transfer pump.

When the device is used, the hydrolyzed metatitanic acid is placed in a metatitanic acid storage tank, the metatitanic acid is conveyed from the left side of the bottom of the solid-liquid separation tank to the inside of the solid-liquid separation tank through a chemical infusion pump for solid-liquid separation, when the metatitanic acid solid accumulated on the surface of the microporous filter pipe reaches a certain thickness, the infusion pump is stopped to work, compressed gas is conveyed from an air inlet on the left side of the top of the solid-liquid separation tank, and the liquid metatitanic acid in the tank is pressed back to a metatitanic acid raw material tank. And then washing water is conveyed to the inside of the solid-liquid separation tank body through a right water inlet at the bottom of the solid-liquid separation tank to wash metatitanic acid adsorbed on the pipe wall of the microporous filter pipe, when Fe +2 ions are reduced to a certain degree by washing, the water inlet of the washing water is closed, finally, clear water is input into the microporous filter pipe from the inside to the outside through a water inlet at the right side of the top of the solid-liquid separation tank to carry out shedding treatment on titanium dioxide on the pipe wall of the microporous filter pipe, the metatitanic acid after shedding is discharged from the bottom of the solid-liquid separation tank and conveyed to a bleaching process, the pressure when metatitanic acid is injected into the solid-liquid separation tank is controlled to be 0.08-0.1 MPA, and the washing effect is better when the water supply pressure is controlled to be 0.3MPa in the washing process.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a pressure filter for titanium white powder washing process production, a serial communication port, includes that the micropore is equipped, the micropore equip including the microfiltration pipe, the inside of microfiltration pipe is equipped with the cavity, is equipped with a plurality of micropore on the pipe wall of microfiltration pipe, the micropore links to each other with the cavity, the micropore equip from last inside to inserting the solid-liquid separation jar down, the tank deck of solid-liquid separation jar link to each other with gas compressor, the bottom side links to each other with the head tank through inserting chemical pump.

2. The pressure filter for titanium dioxide water washing process production according to claim 1, wherein the microporous filter tube is made of non-metal high temperature resistant material.

3. The pressure filter for titanium dioxide water washing process production according to claim 1, wherein said microporous filter tubes are in an annular array.

4. The pressure filter for titanium dioxide water washing process production according to claim 1, wherein the solid-liquid separation tank is cylindrical at the upper part and conical at the lower part, and a discharge valve is arranged at the bottom.

5. The pressure filter for titanium dioxide water washing process production according to claim 1, wherein the microporous filter tube is microporous by sintering.

6. The pressure filter for titanium dioxide water washing process production according to claim 1, wherein the solid-liquid separation tank is connected with an air compressor through a compressed air main pipe.

7. The pressure filter for titanium dioxide water washing process production according to claim 1, wherein the solid-liquid separation tank is connected with a metatitanic acid raw material tank through a chemical liquid transfer pump.