CN218221469U

CN218221469U - Filtrate recycling system

Info

Publication number: CN218221469U
Application number: CN202222367343.4U
Authority: CN
Inventors: 张敏; 谢立纲
Original assignee: Gansu Dongfang Titanium Industry Co ltd
Current assignee: Gansu Dongfang Titanium Industry Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-01-06
Anticipated expiration: 2032-09-06

Abstract

The utility model relates to a filtrating recycling system, its characterized in that: a pressing filtrate pipe (2) and a cloth washing filtrate pipe (3) at the bottom of the plate-and-frame filter press (1) are both connected into a filtrate recovery tank (4), a filtrate conveying pipe (5) at the bottom of the filtrate recovery tank (4) is connected with an inlet of a filter (6) through a filtrate conveying pump (15), and a recovery pipe (7) at the bottom of the filter (6) is connected into a slurry recovery tank (8); an overflow pipe (9) is arranged at the upper part of the filter (6), and the overflow pipe (9) is connected into a washing bucket (10). All filtrates generated in the whole operation process of the plate and frame filter press are separated and then recycled, so that automatic control is realized, the water consumption of washing is saved, the energy-saving requirement is met, and the labor cost is not increased.

Description

Filtrate recycling system

Technical Field

The utility model belongs to sulfuric acid process titanium white powder production field, concretely relates to filtrating recycling system.

Background

In the production of titanium dioxide by a sulfuric acid method, in order to remove soluble iron ions in metatitanic acid slurry, most titanium dioxide manufacturers adopt water washing, and the soluble iron ions are dissolved in water and removed through a large amount of water washing. Before the metatitanic acid is calcined, solid-liquid separation is carried out by a plate-and-frame filter press to remove a large amount of water in the metatitanic acid, and then the metatitanic acid is calcined. After the plate-and-frame filter press is separated, the solid content is 45-48%, and after the feeding of each batch of the plate-and-frame filter press is finished, the filter cloth needs to be washed to prolong the service life of the filter cloth and ensure the filtering performance of the filter cloth, and a large amount of cloth washing filtrate is generated at the moment. In actual production, if the two parts of filtrate can be recovered after effective treatment, the consumption of production water can be effectively reduced, energy conservation is realized, and the production cost is reduced.

Disclosure of Invention

The utility model discloses a not enough of prior art is avoided to the purpose, provides a filtrating recycling system.

In order to achieve the above purpose, the technical scheme of the utility model is that: a filtrate recycling system is characterized in that: a pressing filtrate pipe and a cloth washing filtrate pipe at the bottom of the plate-and-frame filter press are both connected to a filtrate recovery tank, a filtrate conveying pipe at the bottom of the filtrate recovery tank is connected with a filter inlet through a filtrate conveying pump, and a recovery pipe at the bottom of the filter is connected to a slurry recovery tank; an overflow pipe is arranged at the upper part of the filter and is connected into a washing bucket.

And control valves are arranged on the squeezing filtrate pipe and the cloth washing filtrate pipe, and the control valves and the filtrate delivery pump are controlled by a plate-and-frame filter press operation control program.

And the filtrate conveying pipe is connected with a forward washing pipe and a forward blowing pipe, and the forward washing pipe and the forward blowing pipe are both provided with control valves which are automatically controlled by the filter operation program.

The overflow pipe is connected with a backwashing pipe and a back flushing pipe, the backwashing pipe and the back flushing pipe are respectively provided with a control valve, and the control valves are automatically controlled by the operation program of the filter.

And liquid level meters are arranged on the filtrate recovery tank and the slurry recovery tank.

The beneficial effects of the utility model are that: scientific and reasonable design, simple structure and convenient operation. All filtrates that produce the whole operation process of plate and frame filter press all retrieve after the separation and recycle, and automatic control can be realized to whole process, with filtrating recycle, the water consumption of saving washing satisfies energy-conserving requirement, and does not increase the cost of labor. Is suitable for the production process of titanium dioxide.

Drawings

FIG. 1 is a schematic view of the present invention;

in the figure: 1-plate-and-frame filter press, 2-squeezed filtrate pipe, 3-cloth washing filtrate pipe, 4-filtrate recovery tank, 5-filtrate delivery pipe, 6-filter, 7-recovery pipe, 8-slurry recovery tank, 9-overflow pipe, 10-washing water bucket, 11-forward washing pipe, 12-forward blowing pipe, 13-backwash pipe, 14-backwash pipe and 15-filtrate delivery pump.

Detailed Description

See fig. 1, a filtrate recycling system, its characterized in that: a pressing filtrate pipe 2 and a cloth washing filtrate pipe 3 at the bottom of the plate-and-frame filter press 1 are both connected to a filtrate recovery tank 4, a filtrate conveying pipe 5 at the bottom of the filtrate recovery tank 4 is connected with an inlet of a filter 6 through a filtrate conveying pump 15, and a recovery pipe 7 at the bottom of the filter 6 is connected to a slurry recovery tank 8; the upper part of the filter 6 is provided with an overflow pipe 9, and the overflow pipe 9 is connected into a washing water barrel 10.

And control valves are arranged on the squeezing filtrate pipe 2 and the cloth washing filtrate pipe 3, and the control valves and the filtrate delivery pump 15 are controlled by an operation control program of the plate-and-frame filter press 1.

And the filtrate conveying pipe 5 is connected with a forward washing pipe 11 and a forward blowing pipe 12, and both the forward washing pipe 11 and the forward blowing pipe 12 are provided with control valves which are automatically controlled by the operating program of the filter 6.

The overflow pipe 9 is connected with a backwashing pipe 13 and a back flushing pipe 14, and the backwashing pipe 13 and the back flushing pipe 14 are both provided with control valves which are automatically controlled by the operation program of the filter 6.

And liquid level meters are arranged on the filtrate recovery tank 4 and the slurry recovery tank 8.

The working process is as follows: the squeezing filtrate generated by the plate and frame filter press 1 in the working process enters a filtrate recovery tank 4 through a squeezing filtrate pipe 2, the cloth washing filtrate enters the filtrate recovery tank 4 through a cloth washing filtrate pipe 3, the recovered filtrate is conveyed to a filter 6 through a filtrate conveying pipe 5 by a filtrate conveying pump 15, and after being treated by the filter 6, the slurry is conveyed to a slurry recovery tank 8 through a recovery pipe 7 and is recycled to a hydrolysis process through a slurry conveying pump. The clear liquid recovered by the filter 6 overflows to a washing water tank 10 through an overflow pipe 9 and is used for washing through a washing water pump.

Claims

1. A filtrate recycling system is characterized in that: a pressing filtrate pipe (2) and a cloth washing filtrate pipe (3) at the bottom of the plate-and-frame filter press (1) are both connected into a filtrate recovery tank (4), a filtrate conveying pipe (5) at the bottom of the filtrate recovery tank (4) is connected with an inlet of a filter (6) through a filtrate conveying pump (15), and a recovery pipe (7) at the bottom of the filter (6) is connected into a slurry recovery tank (8); an overflow pipe (9) is arranged at the upper part of the filter (6), and the overflow pipe (9) is connected into a washing bucket (10).

2. The filtrate recycling system of claim 1, wherein: and control valves are arranged on the squeezing filtrate pipe (2) and the cloth washing filtrate pipe (3), and the control valves and the filtrate delivery pump (15) are controlled by an operation control program of the plate-and-frame filter press (1).

3. The filtrate recycling system of claim 1, wherein: and the filtrate conveying pipe (5) is connected with a forward washing pipe (11) and a forward blowing pipe (12), and the forward washing pipe (11) and the forward blowing pipe (12) are respectively provided with a control valve which is automatically controlled by the operation program of the filter (6).

4. The filtrate recycling system of claim 1, wherein: and the overflow pipe (9) is connected with a backwashing pipe (13) and a back flushing pipe (14), the backwashing pipe (13) and the back flushing pipe (14) are respectively provided with a control valve, and the control valves are automatically controlled by the operation program of the filter (6).

5. The filtrate recycling system of claim 1, wherein: and liquid level meters are arranged on the filtrate recovery tank (4) and the slurry recovery tank (8).