CN212050542U

CN212050542U - Wet process phosphoric acid edulcoration device

Info

Publication number: CN212050542U
Application number: CN202020568392.2U
Authority: CN
Inventors: 彭亮
Original assignee: Yichang Ezhong Ecological Engineering Co ltd
Current assignee: Yichang Ezhong Ecological Engineering Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-01
Anticipated expiration: 2030-04-16

Abstract

A wet-process phosphoric acid impurity removal device comprises a body, wherein the top of the body is provided with an automatic liquid inlet mechanism, and two sides of the body are respectively provided with an automatic feeding mechanism; the automatic liquid feeding mechanism comprises a wet-process phosphoric acid liquid storage tank, a quantitative barrel is arranged below the wet-process phosphoric acid liquid storage tank, the bottom end of the wet-process phosphoric acid liquid storage tank is connected with the bottom end of the quantitative barrel through a first pipeline, a pressing plate is arranged in the quantitative barrel and driven by a first air cylinder, the lower end of the pressing plate is opposite to a second pipeline at the bottom of the quantitative barrel, and the other end of the second pipeline is communicated with the body; the automatic feeding mechanism comprises a storage tank, the bottom of the storage tank is connected with the quantitative tank through a first discharger, the bottom of the quantitative tank is connected with the discharge pipe through a second discharger, and the other end of the discharge pipe is communicated with the air blower. The utility model provides a pair of wet process phosphoric acid edulcoration device can improve the automatic level of edulcoration.

Description

Wet process phosphoric acid edulcoration device

Technical Field

The utility model belongs to the technical field of the chemical fertilizer processing technique and specifically relates to a wet process phosphoric acid edulcoration device.

Background

The wet process phosphoric acid production process adopted by the existing company is a dihydrate process, phosphoric acid P₂O₅The concentration is about 20 percent, the solid content of suspended solids is about 1-5 percent, a large amount of cation impurities in the phosphorite react with sulfuric acid and then enter wet-process phosphoric acid to contain a large amount of iron, aluminum, magnesium, organic substances and other impurities, and a plurality of chemical reactions occur in the ammoniation reaction process to generate precipitation with most of phosphoric acidThe precipitation affects the water solubility and quality of ammonium phosphate or compound fertilizer products, and part of phosphorus in the products is invalidated, which has great influence on the quality of the fertilizer, is very unfavorable for recycling water-soluble phosphorus, and seriously restricts the yield of water-soluble phosphate fertilizer.

The patent with the application number of 201520329986.7 discloses a wet-process phosphoric acid impurity removal device which is used for removing magnesium ions and sulfate radicals, but the whole device adopts manual addition, and the mode is only suitable for laboratories and is not suitable for mass production of fertilizers in factories.

Disclosure of Invention

The utility model aims to solve the technical problem that a wet process phosphoric acid edulcoration device is provided, oyster shell powder, sodium carbonate and wet process phosphoric acid are carried to automatic ration, provide the feasibility for industrial production.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a wet-process phosphoric acid impurity removal device comprises a body, wherein the top of the body is provided with an automatic liquid inlet mechanism, and two sides of the body are respectively provided with an automatic feeding mechanism;

the automatic liquid feeding mechanism comprises a wet-process phosphoric acid liquid storage tank, a quantitative barrel is arranged below the wet-process phosphoric acid liquid storage tank, the bottom end of the wet-process phosphoric acid liquid storage tank is connected with the bottom end of the quantitative barrel through a first pipeline, a pressing plate is arranged in the quantitative barrel and driven by a first air cylinder, the lower end of the pressing plate is opposite to a second pipeline at the bottom of the quantitative barrel, and the other end of the second pipeline is communicated with the body;

the automatic feeding mechanism comprises a storage tank, the bottom of the storage tank is connected with the quantitative tank through a first discharger, the bottom of the quantitative tank is connected with the discharge pipe through a second discharger, and the other end of the discharge pipe is communicated with the air blower.

And a proximity switch is arranged in the quantitative barrel at the upper end of the pressure plate.

And the first pipeline is provided with an electromagnetic one-way valve.

And material level meters are arranged on the storage tank and the quantitative tank.

First tripper, second tripper all include the casing, are equipped with the pivot in the casing, and the rotating electrical machines drive is passed through in the pivot, a plurality of baffles have been arranged to circumference in the pivot, and the baffle outward flange is laminated with casing both sides arc inner wall.

The utility model relates to a phosphoric acid edulcoration device of wet process has following technological effect:

1) through changing the feeding section of thick bamboo in former application into automatic feed mechanism, change the feed liquor pipe into automatic feed mechanism, can realize automatic reinforced like this, can improve the precision and the efficiency of ratio in process of production.

2) The materials can be scattered by blowing the materials by adopting the air blower, and the reaction process can be accelerated at the later stage; through setting up the tripper, the discharge gate can also be closed simultaneously to the tripper can be unloaded, also can prevent in addition that jar body below from blockking up.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is an overall schematic view of the present invention.

Fig. 2 is a schematic diagram of the automatic liquid feeding mechanism of the present invention.

Fig. 3 is a schematic structural view of the automatic feeding mechanism of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a of fig. 3.

In the figure: the device comprises a body 1, an automatic liquid inlet mechanism 2, an automatic feeding mechanism 3, a shell 4, a rotating shaft 5, a partition plate 6, a wet-process phosphoric acid liquid storage tank 2-1, a quantitative barrel 2-2, a first pipeline 2-3, a pressing plate 2-4, a first air cylinder 2-5, a second pipeline 2-6, a proximity switch 2-7, an electromagnetic one-way valve 2-8, a material storage tank 3-1, a first discharger 3-2, a quantitative tank 3-3, a second discharger 3-4, a discharge pipe 3-5, an air blower 3-6 and a material level meter 3-7.

Detailed Description

As shown in figure 1, the wet-process phosphoric acid impurity removal device comprises a body 1, wherein the body 1 adopts a main structure in 'a wet-process phosphoric acid impurity removal device' in the patent with the application number of '201520329986.7'.

As shown in figure 1, the feeding aspect is changed into automatic feeding, specifically, the top of the body 1 is provided with an automatic liquid feeding mechanism 2, and the two sides of the body 1 are respectively provided with an automatic feeding mechanism 3.

As shown in figure 2, the automatic liquid feeding mechanism 2 comprises a wet-process phosphoric acid liquid storage tank 2-1, and wet-process phosphoric acid is filled in the wet-process phosphoric acid liquid storage tank 2-1. A quantitative barrel 2-2 is arranged below the wet-process phosphoric acid liquid storage tank 2-1, and the capacity of the quantitative barrel 2-2 which can be stored is consistent with the amount of the wet-process phosphoric acid which needs to be added. The bottom end of the wet-process phosphoric acid liquid storage tank 2-1 is connected with the bottom end of the quantitative barrel 2-2 through a first pipeline 2-3, and in addition, an electromagnetic one-way valve 2-8 is arranged on the first pipeline 2-3. As the quantitative barrel 2-2 is arranged below the wet-process phosphoric acid liquid storage tank 2-1, according to the communication principle, after the electromagnetic one-way valve 2-8 is opened, the wet-process phosphoric acid enters the quantitative barrel 2-2 through the first pipeline 2-3 and is filled. The electromagnetic check valves 2-8 are provided, so that the reverse flow can be avoided.

The wet-process phosphoric acid storage tank 2-1 is provided with a high level liquid level meter and a low level liquid level meter, and the amount of wet-process phosphoric acid in the wet-process phosphoric acid storage tank 2-1 is monitored by the two liquid level meters.

A pressure plate 2-4 is arranged in the quantitative barrel 2-2, and the pressure plate 2-4 is driven by a first air cylinder 2-5. And a proximity switch 2-7 is arranged in the quantitative barrel 2-2 at the upper end of the pressure plate 2-4, and the proximity switch 2-7 is used for controlling the ascending position of the pressure plate 2-4.

The lower end of the pressure plate 2-4 is opposite to the second pipeline 2-6 at the bottom of the quantitative barrel 2-2, and the other end of the second pipeline 2-6 is communicated with the body 1.

When wet-process phosphoric acid needs to be added, the first air cylinder 2-5 is started, the first air cylinder 2-5 drives the pressing plate 2-4 to move downwards, the wet-process phosphoric acid in the quantitative barrel 2-2 can be pressed out and enters the body 1, then the first air cylinder 2-5 drives the pressing plate 2-4 to move upwards, and when the first air cylinder 2-5 is close to the proximity switch 2-7, the controller controls the first air cylinder 2-5 to stop moving. Meanwhile, the wet-process phosphoric acid automatically enters the quantitative barrel 2-2 through the first pipeline 2-3, is filled, and waits for next liquid outlet.

As shown in figure 3, the automatic feeding mechanism 3 comprises a storage tank 3-1, a high level indicator and a low level indicator are arranged in the storage tank 3-1, and two impurity-removing raw materials, namely oyster shell powder or sodium carbonate, in the storage tank 3-1 are monitored through the two level indicators 3-7.

The bottom of the material storage tank 3-1 is connected with the quantitative tank 3-3 through a first discharger 3-2. A high-level material level meter is arranged in the quantitative tank 3-3, and the discharged material amount is controlled in a quantitative mode through the material level meter. The bottom of the quantitative tank 3-3 is connected with a discharge pipe 3-5 through a second discharger 3-4, and the other end of the discharge pipe 3-5 is communicated with an air blower 3-6. The materials are blown out by the air blowers 3-6, so that scattering and mixing are facilitated, and the reaction efficiency is improved.

As shown in fig. 4, each of the first discharger 3-2 and the second discharger 3-4 includes a housing 4, a rotating shaft 5 is disposed in the housing 4, the rotating shaft 5 is driven by a rotating motor, a plurality of partition plates 6 are circumferentially disposed on the rotating shaft 5, and outer edges of the partition plates 6 are attached to arc-shaped inner walls of two sides of the housing 4. As can be seen, the left two partitions 6 or the right two partitions 6 can form a closed space with the left or right side walls. In the process of rotating the rotating shaft 5, the materials falling from the upper part are blocked by the partition plate 6 and gradually fall. The discharger not only can play the role of active discharging, but also can avoid the blockage of the bottoms of the storage tank and the quantitative tank; in addition, the discharger can also play a role in closing the valve.

When oyster shell powder or sodium carbonate need be added quantitatively, first tripper 3-2 is opened, the material falls into quantitative jar 3-3, when reaching the default value, level indicator 3-7 detects the signal, and the controller control first tripper 3-2 stops moving, and second tripper 3-4 moves, and the material gradually gets into discharging pipe 3-5, starts air-blower 3-6, utilizes the air-blower to blow in oyster shell powder or sodium carbonate to body 1.

The operation and control cabinet is additionally arranged on the working platform on one side of the body 1 and mainly comprises a cabinet body and electrical components. The cabinet body is internally provided with a PLC, an alternating current contactor, a circuit breaker, a thermal relay, an intermediate relay, a fuse and the like.

During operation, quantitative oyster shell powder, sodium carbonate and wet-process phosphoric acid can be automatically added into the body 1 through the automatic liquid feeding mechanism 2 and the automatic feeding mechanism 3. And starting the stirrer in the body 1, starting the heating pipe 8 to heat the wet-process phosphoric acid to be subjected to impurity removal to 50-70 ℃, carrying out chemical precipitation and impurity removal reaction, and filtering to obtain a wet-process phosphoric acid product subjected to impurity removal after the reaction is finished.

Claims

1. The utility model provides a phosphoric acid edulcoration device by wet process, includes body (1), its characterized in that: the top of the body (1) is provided with an automatic liquid inlet mechanism (2), and two sides of the body (1) are respectively provided with an automatic feeding mechanism (3);

the automatic liquid feeding mechanism (2) comprises a wet-process phosphoric acid liquid storage tank (2-1), a quantitative barrel (2-2) is arranged below the wet-process phosphoric acid liquid storage tank (2-1), the bottom end of the wet-process phosphoric acid liquid storage tank (2-1) is connected with the bottom end of the quantitative barrel (2-2) through a first pipeline (2-3), a pressing plate (2-4) is arranged in the quantitative barrel (2-2), the pressing plate (2-4) is driven by a first air cylinder (2-5), the lower end of the pressing plate (2-4) is opposite to a second pipeline (2-6) at the bottom of the quantitative barrel (2-2), and the other end of the second pipeline (2-6) is communicated with the body (1);

the automatic feeding mechanism (3) comprises a storage tank (3-1), the bottom of the storage tank (3-1) is connected with the quantifying tank (3-3) through a first discharger (3-2), the bottom of the quantifying tank (3-3) is connected with a discharge pipe (3-5) through a second discharger (3-4), and the other end of the discharge pipe (3-5) is communicated with an air blower (3-6).

2. The impurity removing device for wet-process phosphoric acid according to claim 1, characterized in that: a proximity switch (2-7) is arranged in the quantitative barrel (2-2) at the upper end of the pressure plate (2-4).

3. The impurity removing device for wet-process phosphoric acid according to claim 1, characterized in that: an electromagnetic one-way valve (2-8) is arranged on the first pipeline (2-3).

4. The impurity removing device for wet-process phosphoric acid according to claim 1, characterized in that: the material storage tank (3-1) and the quantitative tank (3-3) are both provided with a material level meter (3-7).

5. The impurity removing device for wet-process phosphoric acid according to claim 1, characterized in that: first tripper (3-2), second tripper (3-4) all include casing (4), are equipped with pivot (5) in casing (4), and pivot (5) are through the rotating electrical machines drive, a plurality of baffles (6) have been arranged to circumference on pivot (5), and baffle (6) outward flange and casing (4) both sides arc inner wall laminating.