CN218945796U

CN218945796U - Super-explosive phosphogypsum scrubber

Info

Publication number: CN218945796U
Application number: CN202223545440.4U
Authority: CN
Inventors: 梁玉祥; 谷穗; 郑建国; 杨新亚; 叶蓓红; 龙建; 周斌
Original assignee: Sichuan Guotaiminan Science And Technology Co ltd
Current assignee: Sichuan Guotaiminan Science And Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-02
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to phosphogypsum, in order to clean phosphogypsum more efficiently, a super-explosive phosphogypsum scrubber is provided, which comprises an air supply device and a washing device connected with the air supply device; the air supply device comprises a high-pressure tank, an air compressor, a liquid adding pump connected with the high-pressure tank, a liquid supply pipe connected with the high-pressure tank and a first aeration device arranged in the high-pressure tank; the air compressor is connected with the first aeration device and the first aeration device at the same time; the washing device comprises a washing tank, a discharge pipe arranged at the lower end of the washing tank, a discharge pipe arranged at the upper end of the inside of the washing tank, a feed pipe arranged below the discharge pipe, and a second aeration device arranged in the washing tank; the liquid supply pipe is connected with the second aeration device. The super-explosive phosphogypsum washer can efficiently clean phosphogypsum, and reduce the use of chemical additives.

Description

Super-explosive phosphogypsum scrubber

Technical Field

The utility model relates to the technical field of phosphogypsum, in particular to an ultra-explosive phosphogypsum washer.

Background

Phosphogypsum is a solid waste generated in the wet-process phosphoric acid process, and the component of phosphogypsum is mainly calcium sulfate dihydrate. Phosphogypsum has complex composition, and besides calcium sulfate, phosphorus ore which is not completely decomposed, residual phosphoric acid, fluoride, acid insoluble substances, organic matters and the like, wherein the presence of fluorine and organic matters has the greatest influence on the recycling of phosphogypsum. The random discharge and accumulation of phosphogypsum seriously damages the ecological environment, not only pollutes the underground water resource, but also causes the waste of land resource.

The phosphogypsum is used in the construction industry in the largest utilization scene, but because the phosphogypsum contains a large amount of harmful impurities, the phosphogypsum can be fully utilized after certain treatment, the phosphogypsum is washed by common treatment methods, the impurities in the phosphogypsum are removed by washing for a plurality of times, and phosphoric acid in the phosphogypsum can be recovered, so that the phosphogypsum reaches the standard applicable to the construction industry.

Because a large amount of impurities can be directly attached to the surface of phosphogypsum, when the phosphogypsum is washed, certain stirring oscillation is needed, the impurities can be separated from the surface of the phosphogypsum through vibration, in order to be better removed, the pH value is regulated, an active agent and the like are added into a washing liquid, and the conventional stirring is quite often carried out, so that the impurities cannot be well removed, a large amount of active agent is needed to be added into the washing liquid, the phosphogypsum is polluted to a certain extent due to the addition of the excessive active agent, the difficulty of subsequent wastewater treatment is improved, and the environment is polluted.

Therefore, the device capable of efficiently washing the phosphogypsum is designed, so that the washing efficiency of the phosphogypsum can be improved to a certain extent, and the use of chemical reagents is reduced.

Disclosure of Invention

The utility model aims to provide an ultra-explosive phosphogypsum scrubber which can efficiently clean phosphogypsum and reduce the use of chemical additives.

The embodiment of the utility model is realized by the following technical scheme: the ultra-explosive phosphogypsum scrubber comprises an air supply device and a washing device connected with the air supply device; the air supply device comprises a high-pressure tank, an air compressor, a liquid adding pump connected with the high-pressure tank, a liquid supply pipe connected with the high-pressure tank and a first aeration device arranged in the high-pressure tank; the air compressor is connected with the first aeration device and the first aeration device at the same time; the washing device comprises a washing tank, a discharge pipe arranged at the lower end of the washing tank, a discharge pipe arranged at the upper end of the inside of the washing tank, a feed pipe arranged below the discharge pipe, and a second aeration device arranged in the washing tank; the liquid supply pipe is connected with the second aeration device.

Further, the first aeration device comprises a first aeration pipe and a plurality of first aeration heads connected with the first aeration pipe; and the outlet end of the air compressor is connected with the first aeration pipe.

Further, the second aeration device comprises a second aeration pipe and a plurality of second aeration heads connected with the second aeration pipe.

Further, the washing device further comprises a high-frequency oscillator arranged in the washing tank; the high-frequency oscillator is arranged below the discharge pipe.

Further, the washing device further comprises a sedimentation device arranged below the second aeration device, and the sedimentation device comprises a plurality of sedimentation plates distributed along the horizontal direction.

Further, the section of the sedimentation plate along the vertical direction is L-shaped.

Further, the washing device also comprises a 5-piece static device arranged between the liquid discharge pipe and the feed pipe, and the static device comprises a plurality of static pipes which are closely connected; axes of a plurality of said stationary pipes

The directions are all vertical directions.

Further, the washing device further comprises a defoaming device arranged in the washing tank, and the defoaming device is arranged above the liquid discharge pipe.

Further, the demister comprises a wire mesh.

0, the washing device further comprises a pressure equalizing pipe arranged outside the washing tank, one end of the pressure equalizing pipe is connected with the upper end of the washing tank, and the other end of the pressure equalizing pipe is communicated with the liquid discharge pipe.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects: the super-explosive phosphogypsum scrubber of the utility model pumps air into the high-pressure tank when in use, so that

The inside forms high pressure, then a liquid adding pump pumps cleaning liquid (containing active agent) into the high pressure tank, at the moment, the other air outlet of the 5 air compressor pumps high pressure gas into the first aeration device, and then enters into the cleaning liquid

In the washing liquid, when the air pressure in the high-pressure tank (the air pressure above the liquid level) is higher than the air pressure pressed into the first aeration device by the air compressor, the air exposed from the first aeration device is compressed under high pressure and is not broken, so that the washing liquid forms a super-exposure state, and then the air-liquid mixture is fed through the liquid feeding pipe

The phosphogypsum is put into the washing tank, and the washing tank is in a normal pressure state, so that compressed gas in the liquid can be rapidly expanded and burst in the process of 0 liter, impurities on the surface of the phosphogypsum are efficiently removed under the cooperation of an active agent, the impurities continue to rise along with the airflow (namely air floatation washing), and finally the phosphogypsum is discharged through a liquid discharge pipe, and the phosphogypsum is discharged through a discharge pipe below. By the method, phosphogypsum can be cleaned on line in real time, after phosphogypsum is produced, phosphogypsum can be continuously cleaned, the cleaning efficiency is high, fewer chemical substances are used, and the method is more environment-friendly and energy-saving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a construction of an ultra-explosive phosphogypsum scrubber provided by an embodiment of the present utility model;

fig. 2 is a schematic structural view of a first aeration device according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a second aeration device according to an embodiment of the present utility model.

Icon: 10-air supply device, 11-high-pressure tank, 12-air compressor, 13-liquid feeding pump, 14-liquid feeding pipe, 15-first aeration pipe, 16-first aeration head, 20-washing device, 21-washing tank, 22-discharge pipe, 23-discharge pipe, 24-feeding pipe, 25-second aeration pipe, 26-second aeration head, 27-high-frequency oscillator, 28-sedimentation plate, 29-fine stop pipe, 210-wire mesh and 211-equalizing pipe.

Detailed Description

Examples

As further described below with reference to the specific embodiments, as shown in fig. 1 to 3, the ultra-explosive phosphogypsum scrubber of the present embodiment includes a gas supply device 10, and a scrubbing device 20 connected to the gas supply device 10; the air supply device 10 comprises a high-pressure tank 11, an air compressor 12, a liquid adding pump 13 connected with the high-pressure tank 11, a liquid supply pipe 14 connected with the high-pressure tank 11, and a first aeration device arranged inside the high-pressure tank 11; the air compressor 12 is connected with the first aeration device and the first aeration device at the same time; the washing device 20 comprises a washing tank 21, a discharge pipe 22 arranged at the lower end of the washing tank 21, a discharge pipe 23 arranged at the upper end of the inside of the washing tank 21, a feed pipe 24 arranged below the discharge pipe 23, and a second aeration device arranged in the washing tank 21; the liquid supply pipe 14 is connected to the second aeration device. Specifically, when in use, air is pumped into the high-pressure tank 11 by the air compressor 12 to form high pressure therein, then a cleaning liquid (containing active agent) is pumped into the high-pressure tank 11 by the liquid pump 13, at this time, the other air outlet of the air compressor 12 pumps high-pressure air into the first aeration device and then into the cleaning liquid, at this time, the air pressure (the air pressure above the liquid level) in the high-pressure tank 11 is greater than the air pressure pressed into the first aeration device by the air compressor 12, then the air exposed from the first aeration device is compressed under high pressure and is not broken, so that the cleaning liquid forms a high-exposure state, then the air-liquid mixture enters the washing tank 21 through the liquid adding pipe, and because the washing tank 21 is in a normal pressure state, the compressed air in the liquid expands and bursts rapidly in the process of rising, under the cooperation of the active agent, impurities on the surface of phosphogypsum are removed efficiently, the impurities continue rising (i.e. air floatation washing) and finally, the phosphogypsum is discharged through the liquid discharging pipe 22 below. Through the cleaning device and the cleaning method, the phosphogypsum can be cleaned on line in real time, after the phosphogypsum is produced, the phosphogypsum can be continuously cleaned, the cleaning efficiency is high, the used chemical substances are fewer, and the device is more environment-friendly and energy-saving.

The first aeration device in the present embodiment includes a first aeration pipe 15, and a plurality of first aeration heads 16 connected to the first aeration pipe 15; the outlet end of the air compressor 12 is connected with a first aerator pipe 15. The second aeration device comprises a second aeration pipe 25 and a plurality of second aeration heads 26 connected with the second aeration pipe 25. Specifically, the first aeration device and the second aeration device have basically the same structure and are composed of pipelines and aeration heads, and the difference is that the second aeration pipe 25 and the second aeration head 26 are obviously more in number, and the gas is sprayed out through the very tiny holes on the aeration heads (also called air bubble stones), so that the gas can be fully dispersed in the solution, the contact area of the gas and the solution is improved, the contact area of the gas and phosphogypsum is also improved, and the cleaning efficiency of phosphogypsum is improved.

The washing apparatus 20 in the present embodiment further includes a high-frequency oscillator provided in the washing tank 21; a high frequency oscillator is provided below the discharge pipe 22. Specifically, the high-frequency oscillator is mainly an ultrasonic oscillator, which is mainly used for scattering phosphogypsum, so that phosphogypsum can be sufficiently dispersed in the solution, and can be sufficiently contacted with bubbles.

The washing apparatus 20 in this embodiment further comprises a sedimentation device comprising a plurality of sedimentation plates 28 distributed in the horizontal direction, which is provided below the second aeration device. The sedimentation plate 28 is L-shaped in cross section in the vertical direction. Specifically, the sedimentation device is mainly used for promoting the phosphogypsum after cleaning to be settled to the bottom, and through arranging a plurality of sedimentation plates 28, the phosphogypsum can enter between the sedimentation plates 28, the fluidity of the solution between the sedimentation plates 28 is lower, the liquid is not easy to stir, and the like, so that the phosphogypsum particles are easy to sediment.

The washing apparatus 20 of this embodiment further comprises a stationary member disposed between the drain pipe 23 and the feed pipe 24, the stationary member comprising a plurality of stationary pipes closely connected; the axis direction of the static pipes is vertical. In particular, the static device can make the liquid which is continuously stirred smooth, and is similar to the principle of a sedimentation device, when the liquid and the gas are contacted and enter the interior of the static tube, the movement of the liquid can be effectively reduced, so that the liquid (containing the washed impurities) can be more stably introduced into the liquid discharge tube 23 for discharge.

The washing device 20 in this embodiment further includes a defoaming device provided in the washing tank 21, and the defoaming device is provided above the drain pipe 23. The demister includes a wire mesh 210. In particular, the wire mesh 210 can effectively eliminate foam, avoiding a large amount of foam from accumulating above the wash tank 21.

The washing apparatus 20 in this embodiment further includes a pressure equalizing pipe 211 provided outside the washing tank 21, one end of the pressure equalizing pipe 211 is connected to the upper end of the washing tank 21, and the other end is communicated with a drain pipe 23. Specifically, the pressure equalizing pipe 211 is mainly used for exhausting gas and keeping the pressure in the washing tank 21 stable. A large amount of liquid can be prevented from being discharged from the liquid discharge pipe 23.

In summary, the ultra-explosive phosphogypsum scrubber of the embodiment is cleaned by the cleaning device and the corresponding cleaning

The method can realize real-time online cleaning of phosphogypsum, and after phosphogypsum is produced, the phosphogypsum can be continuously cleaned by 5 times, and the method has high cleaning efficiency, uses fewer chemical substances, and is more environment-friendly and energy-saving.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. All at this point

Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An ultra-explosive phosphogypsum scrubber is characterized in that: comprises an air supply device and a washing device connected with the air supply device;

the air supply device comprises a high-pressure tank, an air compressor, a liquid adding pump connected with the high-pressure tank, a liquid supply pipe connected with the high-pressure tank and a first aeration device arranged in the high-pressure tank; the air compressor is connected with the first aeration device and the first aeration device at the same time;

the washing device comprises a washing tank, a discharge pipe arranged at the lower end of the washing tank, a discharge pipe arranged at the upper end of the inside of the washing tank, a feed pipe arranged below the discharge pipe, and a second aeration device arranged in the washing tank; the liquid supply pipe is connected with the second aeration device.

2. The ultra-explosive phosphogypsum scrubber of claim 1, wherein: the first aeration device comprises a first aeration pipe and a plurality of first aeration heads connected with the first aeration pipe;

and the outlet end of the air compressor is connected with the first aeration pipe.

3. The ultra-explosive phosphogypsum scrubber of claim 1, wherein: the second aeration device comprises a second aeration pipe and a plurality of second aeration heads connected with the second aeration pipe.

4. The ultra-explosive phosphogypsum scrubber of claim 1, wherein: the washing device also comprises a high-frequency oscillator arranged in the washing tank; the high-frequency oscillator is arranged below the discharge pipe.

5. The ultra-explosive phosphogypsum scrubber of claim 1, wherein: the washing device further comprises a sedimentation device arranged below the second aeration device, and the sedimentation device comprises a plurality of sedimentation plates distributed along the horizontal direction.

6. The ultra-explosive phosphogypsum scrubber of claim 5, wherein: the section of the sedimentation plate along the vertical direction is L-shaped.

7. The ultra-explosive phosphogypsum scrubber of claim 1, wherein: the washing device also comprises a static device arranged between the liquid discharge pipe and the feed pipe, and the static device comprises a plurality of static pipes which are closely connected; the axial directions of the static pipes are all vertical directions.

8. The ultra-explosive phosphogypsum scrubber of claim 1, wherein: the washing device further comprises a defoaming device arranged in the washing tank, and the defoaming device is arranged above the liquid discharge pipe.

9. The ultra-explosive phosphogypsum scrubber of claim 8, wherein: the defoaming device comprises a silk screen.

10. The ultra-explosive phosphogypsum scrubber of claim 1, wherein: the washing device further comprises a pressure equalizing pipe arranged outside the washing tank, one end of the pressure equalizing pipe is connected with the end part of the upper end of the washing tank, and the other end of the pressure equalizing pipe is communicated with the liquid discharge pipe.