CN210385101U - Phosphogypsum preparation acid-base production line - Google Patents
Phosphogypsum preparation acid-base production line Download PDFInfo
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- CN210385101U CN210385101U CN201920666615.6U CN201920666615U CN210385101U CN 210385101 U CN210385101 U CN 210385101U CN 201920666615 U CN201920666615 U CN 201920666615U CN 210385101 U CN210385101 U CN 210385101U
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Abstract
An acid-base production line for preparing phosphogypsum comprises a reaction tank (50), a three-leg centrifuge (51), a sodium sulfate treatment device, an acid solution pool (54) and an alkali solution pool (55), wherein a sodium hydroxide solution feeding port and a phosphogypsum feeding port are formed in the top of the reaction tank (50), an electric stirring device is arranged in the reaction tank (50), a discharging pipe is arranged at the bottom of the reaction tank (50), the three-leg centrifuge (51) comprises a three-leg support (1), a shell (2), a rotary drum (3), a scraper discharging device and a blocking discharging device, a feeding port is formed in the top of the shell (2), a liquid outlet is formed in the bottom of the shell (2), the shell (2) is installed on the three-leg support (1), and a servo motor (4) is arranged on; the advantages are that: the acid and alkali production speed is high, the filtering performance of the three-leg centrifuge is good, and blockage cannot occur.
Description
Technical Field
The utility model relates to an acid-base production facility field, concretely relates to acid-base production line of ardealite preparation.
Background
At present, on a production line for producing acid and alkali from phosphogypsum, sodium hydroxide and pretreated phosphogypsum are decomposed into sodium sulfate, a byproduct is calcium hydroxide, calcium hydroxide particles are very fine, a common three-leg centrifuge cannot separate out liquid, and the separated sodium sulfate contains impurities to influence the product quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above insufficiency and provides an acid-base production line for phosphogypsum preparation.
The utility model comprises a reaction tank, a three-leg centrifuge, a sodium sulfate treatment device, an acid solution pool and an alkali solution pool,
the top of the reaction tank is provided with a sodium hydroxide solution inlet and a phosphogypsum inlet, the reaction tank is internally provided with an electric stirring device, the bottom of the reaction tank is provided with a discharging pipe,
the three-foot centrifuge comprises a three-foot bracket, a shell, a rotary drum, a scraper discharging device and a blocking discharging device,
the top of the shell is provided with a feeding hole, the bottom of the shell is provided with a liquid outlet, the shell is arranged on a tripod, one side of the shell is provided with a servo motor, the bottom of the rotary drum is provided with a main shaft and is movably arranged on the tripod through the main shaft and a bearing, the servo motor drives the main shaft to rotate through a belt pulley, the rotary drum is positioned in the shell,
a water filtering area is formed between the inner wall of the shell and the outer wall of the rotary drum, a group of cleaning pipelines are arranged on the shell in vertical sequence, the water outlet ends of the cleaning pipelines are communicated with the water filtering area,
the scraper discharging device comprises a screw rod lifter, a first motor and a guide vertical plate,
the top of the shell is provided with a through hole, one end of the screw rod lifter is provided with a guide sliding block, the other end of a screw rod of the screw rod lifter penetrates through the through hole at the top of the shell and is positioned in the rotary drum, the end part of the other end of the screw rod lifter is provided with a scraper, the screw rod lifter is arranged at the top surface of the shell through a screw, a first motor is arranged at the top of the shell through a bracket, a power output shaft of the first motor is in transmission connection with a worm of the screw rod lifter, a guide groove is arranged on a guide vertical plate, the guide vertical plate is fixedly arranged at the top of the,
the blocking and discharging device comprises a baffle and a return spring, the bottom surface of the rotary drum is provided with a chute, a deslagging hole is arranged in the chute, the bottom of the baffle is provided with a first spring connecting plate, the baffle is slidably arranged in the chute and is positioned below the deslagging hole, the bottom surface of the rotary drum positioned at one side of the chute is provided with a second connecting plate, the first spring connecting plate is connected with the second connecting plate through the return spring,
the sodium sulfate treatment device comprises an adjusting oxidation tank, a flocculation sedimentation tank, a resin adsorption tank and an electrolytic tank,
the top of the adjusting oxidation pond is connected with a sodium sulfate water inlet pipe and an oxidant liquid inlet pipe, a first stirrer is further arranged in the adjusting oxidation pond, the oxidant liquid inlet pipe penetrates through the top of the adjusting oxidation pond and extends towards the bottom of the adjusting oxidation pond, the lower end of the oxidant liquid inlet pipe is communicated with a horizontal annular round pipe, the horizontal annular round pipe is fixedly connected with the bottom of the adjusting oxidation pond through a support rod, a plurality of oxidant discharge holes are uniformly formed in the horizontal annular round pipe and face the bottom of the adjusting oxidation pond, and the upper part of the adjusting oxidation pond is connected with the top of the flocculation sedimentation pond through a liquid conveying pipeline;
a PAM feeding device is arranged on the flocculation sedimentation tank, a second stirrer is arranged in the flocculation sedimentation tank, and the tank water discharged from the flocculation sedimentation tank flows through the sedimentation tank and the resin adsorption tank in sequence and enters the electrolytic tank;
the electrolytic cell comprises a cell body, an anode, a cathode, a cation exchange membrane and an anion exchange membrane, wherein the cell body is divided into a cathode chamber, a liquid inlet chamber and an anode chamber by the anion exchange membrane and the cation exchange membrane, the cathode chamber is internally provided with the cathode, the anode chamber is internally provided with the anode, and the top of the liquid inlet chamber is provided with cell waterA liquid inlet, a first gas outlet arranged at the top of the cathode chamber, a NaOH solution outlet arranged at the lower part of the cathode chamber, a second gas outlet arranged at the top of the anode chamber, and H arranged at the lower part of the anode chamber2SO4A solution outlet is arranged at the bottom of the container,
the discharge pipe of the reaction tank is communicated with the feed inlet of the shell, the liquid outlet of the shell is communicated with the sodium sulfate inlet pipe, the NaOH solution outlet is communicated with the alkaline solution pool, and H2SO4The solution outlet is communicated with the acid solution pool.
The inlet end of the oxidant liquid inlet pipe is communicated with a hydrogen peroxide storage tank.
The horizontal annular circular pipe is arranged below the stirring blade of the first stirrer.
The anode and the cathode are both graphite electrodes or titanium alloy electrodes or titanium electrodes.
The outer wall of the rotary drum is made of a stainless steel sintering net.
The blade of the scraper is in clearance fit with the inner wall of the rotary drum.
An O-shaped sealing ring used for sealing the top surface of the baffle is arranged on the discharge hole of the slag discharge hole.
The utility model has the advantages that: the acid and alkali production speed is high, the filtering performance of the three-leg centrifuge is good, and blockage cannot occur.
Description of the drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the three-leg centrifuge of the present invention.
Fig. 3 is a schematic top view of the three-leg centrifuge of the present invention.
Fig. 4 is a schematic sectional view of a-a of fig. 3 according to the present invention.
Fig. 5 is a schematic diagram of a partially enlarged structure of fig. 4 according to the present invention.
Fig. 6 is a schematic view of the drum in a bottom view.
Fig. 7 is a schematic structural diagram of the sodium sulfate treatment device of the present invention.
Fig. 8 is a schematic structural view of a horizontal circular tube.
FIG. 9 is a schematic view of the structure of the electrolytic cell.
Detailed Description
As shown in the attached drawing, the utility model comprises a reaction tank 50, a three-leg centrifuge 51, a sodium sulfate treatment device, an acid solution pool 54 and an alkali solution pool 55,
the top of the reaction tank 50 is provided with a sodium hydroxide solution inlet and a phosphogypsum inlet, an electric stirring device is arranged in the reaction tank 50, the bottom of the reaction tank 50 is provided with a discharging pipe,
the three-leg centrifuge 51 comprises a three-leg bracket 1, a shell 2, a rotary drum 3, a scraper discharging device and a blocking discharging device,
the top of the shell 2 is provided with a feeding hole, the bottom of the shell 2 is provided with a liquid outlet, the shell 2 is arranged on the tripod bracket 1, one side of the shell 2 is provided with a servo motor 4, the bottom of the rotary drum 3 is provided with a main shaft and is movably arranged on the tripod bracket 1 through the main shaft and a bearing, the servo motor 4 drives the main shaft to rotate through a belt pulley, the rotary drum 3 is positioned in the shell 2,
a water filtering area is formed between the inner wall of the shell 2 and the outer wall of the rotary drum 3, a group of cleaning pipelines 5 are arranged on the shell 2, the group of cleaning pipelines 5 are vertically arranged in sequence, the water outlet end of each cleaning pipeline 5 is communicated with the water filtering area,
the scraper discharging device comprises a screw rod lifter 7, a first motor 8 and a guide vertical plate 9,
the top of the shell 2 is provided with a through hole, one end of a screw rod elevator 7 is provided with a guide sliding block 10, the other end of a screw rod of the screw rod elevator 7 penetrates through the through hole at the top of the shell 2 and is positioned in the rotary drum 3, the end part of the other end of the screw rod elevator 7 is provided with a scraper 11, the screw rod elevator 7 is arranged on the top surface of the shell 2 through a screw, a first motor 8 is arranged at the top of the shell 2 through a bracket, a power output shaft of the first motor 8 is in transmission connection with a worm of the screw rod elevator 7, a guide groove is arranged on a guide vertical plate 9, the guide vertical plate 9 is fixedly arranged at the top of the shell 2 and is,
the blocking and discharging device comprises a baffle 12 and a return spring 13, a chute 14 is arranged on the bottom surface of the rotary drum 3, a deslagging hole 15 is arranged in the chute 14, a first spring connecting plate 16 is arranged at the bottom of the baffle 12, the baffle 12 is slidably arranged in the chute 14 and is positioned below the deslagging hole 15, a second connecting plate 17 is arranged on the bottom surface of the rotary drum 3 at one side of the chute 14, the first spring connecting plate 16 is connected with the second connecting plate 17 through the return spring 13,
the sodium sulfate treatment device comprises a regulating oxidation pond 61, a flocculation sedimentation pond 62, a sedimentation pond 63, a resin adsorption tank 64 and an electrolytic cell 65,
the top of the adjusting oxidation pond 61 is connected with a sodium sulfate water inlet pipe 66 and an oxidant liquid inlet pipe 67, a first stirrer 68 is further arranged in the adjusting oxidation pond 61, the oxidant liquid inlet pipe 67 penetrates through the top of the adjusting oxidation pond 61 and extends towards the bottom of the adjusting oxidation pond 61, the lower end of the oxidant liquid inlet pipe 67 is communicated with a horizontal annular circular pipe 69, the horizontal annular circular pipe 69 is fixedly connected with the bottom of the adjusting oxidation pond 61 through a support rod 70, a plurality of oxidant discharge holes 71 are uniformly formed in the horizontal annular circular pipe 69 and towards the bottom of the adjusting oxidation pond 61, and the upper part of the adjusting oxidation pond 61 is connected with the top of the flocculation sedimentation pond 62 through a liquid conveying pipeline;
a PAM feeding device 73 is arranged on the flocculation sedimentation tank 62, a second stirrer 72 is arranged in the flocculation sedimentation tank 62, and the tank water discharged from the flocculation sedimentation tank 62 flows through the sedimentation tank 63 and the resin adsorption tank 64 in sequence and enters the electrolytic tank 65;
the discharge pipe of the reaction tank 50 is communicated with the feed inlet of the shell 2, the liquid outlet of the shell 2 is communicated with the sodium sulfate inlet pipe 66, the NaOH solution outlet 84 is communicated with the alkaline solution pool 55, and H2SO4The solution outlet 85 communicates with the acid solution reservoir 54.
The inlet end of the oxidant liquid inlet pipe 67 is communicated with a hydrogen peroxide storage tank 86.
The horizontal annular circular tube 69 is disposed below the stirring blade of the first stirrer 68.
The anode 74 and the cathode 75 are both graphite electrodes or titanium alloy electrodes or titanium electrodes.
The outer wall of the rotary drum 3 is made of stainless steel sintering net.
The blade of the scraper 11 is in clearance fit with the inner wall of the rotary drum 3.
An O-shaped sealing ring for sealing the top surface of the baffle plate 12 is arranged on the discharge hole of the slag discharge hole 15.
The working mode is as follows: adding sodium hydroxide solution and phosphogypsum into a reaction tank 50, stirring and mixing to decompose into mixed solution of sodium sulfate and calcium hydroxide, separating calcium hydroxide from the mixed solution of sodium sulfate and calcium hydroxide by a three-leg centrifuge 51,
calcium hydroxide solution is added into the rotary drum 3 from a feeding hole at the top of the shell 2, the servo motor 4 drives the rotary drum 3 to rotate, the baffle plate 12 slides along the chute 14 to block the slag discharge hole 15 under the action of centrifugal force, water is discharged into a water filtering area through meshes of the stainless steel sintering net and then is discharged from a water discharge pipe of the water filtering area, calcium hydroxide is remained in the rotary drum 3 after the filtration is finished, the rotary drum 3 is changed from high-speed rotation to low-speed rotation, the baffle plate 12 is pulled back by the reset spring 13, the slag discharge hole 15 is opened, and the calcium hydroxide in the rotary drum 3 is discharged,
the screw rod of the screw rod lifter 7 is driven by the first motor 8 to slide downwards along the guide vertical plate 9, and the scraper 11 scrapes off calcium hydroxide attached to the inner wall of the rotary drum 3.
When the rotary drum 3 needs to be cleaned, water is sprayed towards the rotary drum 3 through the group of cleaning pipelines 5 to wash the outer wall of the rotary drum 3, and the rotary drum 3 slowly rotates in the cleaning process until the cleaning is finished.
After being sequentially treated in an adjusting oxidation tank 61, a flocculation sedimentation tank 62, a sedimentation tank 63 and a resin adsorption tank 64 through a liquid conveying pipeline, a sodium sulfate solution enters an electrolytic tank 65 from a tank water inlet 81 at the top of a liquid inlet chamber, and Na + in the sodium sulfate solution enters a cathode chamber 78 and an OH & lt- & gt through a cation exchange membrane 76 to form a NaOH solution; in the anode chamber 80, due to OH-The OH-concentration is reduced and the ionization balance of the water is shifted in the direction of H + and OH-formation, SO that anode compartment 80 is enriched with a large amount of H +, SO 42-in the sodium sulfate solution added permeates anion exchange membrane 77 into cathode compartment 78 and H + forms H-2SO4The solution of (1). Electrolyzing to a certain extent, discharging NaOH solution from NaOH solution outlet 84 of cathode chamber 78, H from anode chamber 802SO4Solution outlet 85 discharges H2SO4And (3) solution. Can be measured by NaOH solution or H2SO4Further calculating the density of the solution to obtain NaOH solution or H2SO4The concentration of the solution determines the flow rate of the solution discharged during the production process.
NaOH is discharged into an alkali solution tank 55, H2SO4And discharged into the acid solution pool 54.
Claims (7)
1. The production line for preparing acid and alkali by phosphogypsum is characterized by comprising a reaction tank (50), a three-leg centrifuge (51), a sodium sulfate treatment device, an acid solution pool (54) and an alkali solution pool (55),
the top of the reaction tank (50) is provided with a sodium hydroxide solution inlet and a phosphogypsum inlet, an electric stirring device is arranged in the reaction tank (50), the bottom of the reaction tank (50) is provided with a discharging pipe,
the three-leg centrifuge (51) comprises a three-leg bracket (1), a shell (2), a rotary drum (3), a scraper discharging device and a blocking discharging device,
the top of the shell (2) is provided with a feeding hole, the bottom of the shell (2) is provided with a liquid outlet, the shell (2) is arranged on the tripod bracket (1), one side of the shell (2) is provided with a servo motor (4), the bottom of the rotary drum (3) is provided with a main shaft and is movably arranged on the tripod bracket (1) through the main shaft and a bearing, the servo motor (4) drives the main shaft to rotate through a belt pulley, the rotary drum (3) is positioned in the shell (2),
a water filtering area is formed between the inner wall of the shell (2) and the outer wall of the rotary drum (3), a group of cleaning pipelines (5) are arranged on the shell (2), the group of cleaning pipelines (5) are vertically and sequentially arranged, the water outlet end of each cleaning pipeline (5) is communicated with the water filtering area,
the scraper discharging device comprises a screw rod lifter (7), a first motor (8) and a guide vertical plate (9),
the top of the shell (2) is provided with a through hole, one end of a screw rod elevator (7) is provided with a guide sliding block (10), the other end of a screw rod of the screw rod elevator (7) penetrates through the through hole at the top of the shell (2) and is positioned in the rotary drum (3), the end part of the other end of the screw rod elevator (7) is provided with a scraper (11), the screw rod elevator (7) is arranged on the top surface of the shell (2) through a screw, a first motor (8) is arranged on the top of the shell (2) through a bracket, a power output shaft of the first motor (8) is connected with a worm of the screw rod elevator (7) in a transmission way, a guide groove is formed in the guide vertical plate (9), the guide vertical plate (9) is fixedly arranged at the top of the shell (2) and is positioned at one side of the,
the material blocking and discharging device comprises a baffle (12) and a return spring (13), a chute (14) is arranged on the bottom surface of the rotary drum (3), a slag discharge hole (15) is formed in the chute (14), a first spring connecting plate (16) is arranged at the bottom of the baffle (12), the baffle (12) is slidably mounted in the chute (14) and is positioned below the slag discharge hole (15), a second connecting plate (17) is arranged on the bottom surface of the rotary drum (3) positioned on one side of the chute (14), the first spring connecting plate (16) is connected with the second connecting plate (17) through the return spring (13),
the sodium sulfate treatment device comprises an adjusting oxidation tank (61), a flocculation sedimentation tank (62), a sedimentation tank (63), a resin adsorption tank (64) and an electrolytic tank (65),
the top of the adjusting oxidation pond (61) is connected with a sodium sulfate water inlet pipe (66) and an oxidant liquid inlet pipe (67), a first stirrer (68) is further arranged in the adjusting oxidation pond (61), the oxidant liquid inlet pipe (67) penetrates through the top of the adjusting oxidation pond (61) and extends towards the bottom of the adjusting oxidation pond (61), the lower end of the oxidant liquid inlet pipe (67) is communicated with a horizontal annular circular pipe (69), the horizontal annular circular pipe (69) is fixedly connected with the bottom of the adjusting oxidation pond (61) through a support rod (70), a plurality of oxidant discharge holes (71) are uniformly formed in the horizontal annular circular pipe (69) towards the bottom of the adjusting oxidation pond (61), and the upper part of the adjusting oxidation pond (61) is connected with the top of the flocculation sedimentation pond (62) through a liquid conveying pipeline;
a PAM feeding device (73) is arranged on the flocculation sedimentation tank (62), a second stirrer (72) is arranged in the flocculation sedimentation tank (62), and the tank water discharged from the flocculation sedimentation tank (62) flows through the sedimentation tank (63) and the resin adsorption tank (64) in sequence and enters the electrolytic tank (65);
electrolytic cell (65) includes cell body, positive pole (74), negative pole (75), cation exchange membrane (76) and anion exchange membrane (77), anion exchange membrane (77) and cation exchange membrane (76) divide the cell body into cathode chamber (78), feed liquor chamber (79) and anode chamber (80), are equipped with in cathode chamber (78) negative pole (75), be equipped with in anode chamber (80) positive pole (74), the top of feed liquor chamber is equipped with pond water inlet (81), and the top of cathode chamber (78) is equipped with first gas outlet (82), the lower part is equipped with NaOH solution outlet (84), and the top of anode chamber (80) is equipped with second gas outlet (83), the lower part is equipped with H solution outlet (84)2SO4A solution outlet (85),
a discharge pipe of the reaction tank (50) is communicated with a feed inlet of the shell (2), a liquid outlet of the shell (2) is communicated with a sodium sulfate inlet pipe (66), a NaOH solution outlet (84) is communicated with an alkali solution pool (55), and H2SO4The solution outlet (85) is communicated with the acid solution pool (54).
2. The production line for preparing acid and alkali by phosphogypsum according to claim 1, which is characterized in that the inlet end of the oxidant inlet pipe (67) is communicated with a hydrogen peroxide storage tank (86).
3. The production line for producing acid and alkali by phosphogypsum according to claim 1, characterized in that the horizontal circular pipe (69) is arranged below the stirring blade of the first stirrer (68).
4. The production line for preparing acid and alkali by phosphogypsum according to claim 1, characterized in that the anode (74) and the cathode (75) are both graphite electrodes or titanium alloy electrodes or titanium electrodes.
5. The production line for preparing acid and alkali by phosphogypsum according to claim 1 is characterized in that the outer wall of the rotary drum (3) is made of stainless steel sintering mesh.
6. The production line for preparing acid and alkali by phosphogypsum according to claim 1 is characterized in that the blade of the scraper (11) is in clearance fit with the inner wall of the rotary drum (3).
7. The production line for preparing acid and alkali by phosphogypsum according to claim 1 is characterized in that an O-shaped sealing ring for sealing the top surface of the baffle plate (12) is arranged on a discharge hole of the slag discharge hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920666615.6U CN210385101U (en) | 2019-05-10 | 2019-05-10 | Phosphogypsum preparation acid-base production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920666615.6U CN210385101U (en) | 2019-05-10 | 2019-05-10 | Phosphogypsum preparation acid-base production line |
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| Publication Number | Publication Date |
|---|---|
| CN210385101U true CN210385101U (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920666615.6U Expired - Fee Related CN210385101U (en) | 2019-05-10 | 2019-05-10 | Phosphogypsum preparation acid-base production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210385101U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742613A (en) * | 2020-12-16 | 2021-05-04 | 安徽天祥药业有限公司 | Horizontal spiral sedimentation centrifuge |
| CN117358674A (en) * | 2023-11-07 | 2024-01-09 | 湖北美辰环保股份有限公司 | Phosphogypsum composite pickling equipment and process |
| CN117658394A (en) * | 2024-02-01 | 2024-03-08 | 山东轻工职业学院 | Pharmaceutical wastewater recycling device |
-
2019
- 2019-05-10 CN CN201920666615.6U patent/CN210385101U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742613A (en) * | 2020-12-16 | 2021-05-04 | 安徽天祥药业有限公司 | Horizontal spiral sedimentation centrifuge |
| CN112742613B (en) * | 2020-12-16 | 2021-09-17 | 安徽天祥药业有限公司 | Horizontal spiral sedimentation centrifuge |
| CN117358674A (en) * | 2023-11-07 | 2024-01-09 | 湖北美辰环保股份有限公司 | Phosphogypsum composite pickling equipment and process |
| CN117358674B (en) * | 2023-11-07 | 2024-04-19 | 湖北美辰环保股份有限公司 | Phosphogypsum composite pickling equipment and process |
| CN117658394A (en) * | 2024-02-01 | 2024-03-08 | 山东轻工职业学院 | Pharmaceutical wastewater recycling device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 Termination date: 20210510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |