CN218491485U

CN218491485U - Phosphogypsum acid-making purification dilute sulfuric acid defluorination device

Info

Publication number: CN218491485U
Application number: CN202222472690.3U
Authority: CN
Inventors: 李海艳; 马磊; 盛余; 韩维玲; 郭正仙; 王祥碧
Original assignee: Guizhou Shengwei Kaiyang Chemical Co ltd
Current assignee: Guizhou Shengwei Kaiyang Chemical Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-17
Anticipated expiration: 2032-09-19

Abstract

The utility model relates to an acid technical field is made to ardealite, and discloses an acid purification dilute sulfuric acid defluorination device is made to ardealite, including taking off the fluorine pond, the right side that takes off the fluorine pond is equipped with the pressure filter, the right side of pressure filter is equipped with clear liquid pond, the fixed intercommunication of right side wall in clear liquid pond has the guide to be responsible for, the guide is responsible for and is equipped with the clear liquid pump outward, fixed intercommunication has the first passage of same root between clear liquid pond and the pressure filter, the right side wall fixedly connected with filter pump in defluorination pond, the fixed intercommunication of output of filter pump has the right-hand member of second passage and the fixed intercommunication of lateral wall of pressure filter. The utility model discloses can be when carrying out the defluorination to dilute sulphuric acid, the ration is to carrying dilute sulphuric acid in the defluorination pond, makes in dilute sulphuric acid and the defluorination pond calcium oxide fully react, when guaranteeing that the fluoride ion is whole to be purified in the dilute sulphuric acid, has avoided the calcium oxide can remain too much stability, has improved the utilization ratio of calcium oxide.

Description

Phosphogypsum acid-making purification dilute sulfuric acid defluorination device

Technical Field

The utility model relates to an acid technical field is made to the ardealite, especially relates to an acid purification dilute sulfuric acid defluorination device is made to ardealite.

Background

The phosphogypsum mainly comprises gray black and gray white, the particle diameter is generally 5-50 mu m, the content of crystal water is 20-25%, the phosphogypsum is solid waste generated in a wet-process phosphoric acid process, the components of the phosphogypsum are mainly calcium sulfate dihydrate, the composition of the phosphogypsum is complex, besides calcium sulfate, phosphate ore which is not completely decomposed, residual phosphoric acid, fluoride, acid insoluble substances, organic matters and the like are also included, in the production process of preparing sulfuric acid from the phosphogypsum, because the phosphogypsum contains fluorine ions, part of the phosphogypsum is washed in the purification washing stage, in the dilute acid generated in the purification, part of the phosphogypsum exists in a gas phase mode and enters the subsequent working section, the dilute sulfuric acid generated in the preparation of sulfuric acid from the phosphogypsum has the content of about 0.1t/t100%, the dilute sulfuric acid contains the fluorine ions, the weight percentage is about 2%, the amount of the dilute sulfuric acid containing the fluorine ions is large, and the pipeline equipment such as stainless steel is corroded.

The device for removing fluorine from the dilute sulfuric acid for purifying the acid produced by the phosphogypsum comprises a defluorinating agent storage tank, wherein a defluorinating pool is arranged at the lower end of the defluorinating agent storage tank, a screw feeder is connected between the defluorinating agent storage tank and the defluorinating pool, a feeding pipe is connected to the upper end of the defluorinating pool, a filter press connected with a first material guide pipe through a filter pump is arranged at one end of the defluorinating agent storage tank, a circulating pipe is further connected between the defluorinating agent storage tank and the first material guide pipe, a clear liquid pool connected with the filter press through a second material guide pipe is arranged at one end of the filter press, a clear liquid pump is connected to the lower end of the clear liquid pool, a main material guide pipe is connected to the output end of the clear liquid pump, and two sets of material guide branch pipes are connected to the upper end of the main material guide pipe through a tee joint; the device reduces the content of fluoride ions in the purified by-product dilute sulfuric acid to below 50PPM, the removal efficiency is more than 99%, and the corrosion to a conveying pipeline and equipment is eliminated after the purified by-product dilute sulfuric acid is defluorinated; when the device is used, dilute sulfuric acid needs to be conveyed into the defluorination tank through the feeding pipe to react with calcium oxide, the speed of conveying the calcium oxide into the defluorination tank by the screw feeder is fixed, when the amount of the dilute sulfuric acid entering the defluorination tank is too large, the calcium oxide cannot purify all fluoride ions in the dilute sulfuric acid, and when the amount of the dilute sulfuric acid entering the defluorination tank is too small, the calcium oxide can be remained too large, so that the waste of the calcium oxide is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art dilute sulfuric acid defluorinating device when using, need carry dilute sulfuric acid through the filling tube in the defluorinating pond and the calcium oxide reacts, because the speed that screw feeder carried the calcium oxide in to the defluorinating pond makes fixedly, when the dilute sulfuric acid volume was too much in getting into the defluorinating pond, the calcium oxide can not purify whole fluorinion in the dilute sulfuric acid, when getting into the defluorinating pond dilute sulfuric acid volume too little, the calcium oxide can remain too much, cause the extravagant problem of calcium oxide, and the phosphogypsum system acid purification dilute sulfuric acid defluorinating device who proposes.

In order to realize the purpose, the utility model adopts the following technical scheme:

the device comprises a defluorination tank, wherein a filter press is arranged on the right side of the defluorination tank, a clear liquid tank is arranged on the right side of the filter press, a guide main pipe is fixedly communicated with the right side wall of the clear liquid tank, a clear liquid pump is arranged outside the guide main pipe, the clear liquid tank and the filter press are fixedly communicated with one another through a first guide pipe, a filter pump is fixedly connected to the right side wall of the defluorination tank, the output end of the filter pump is fixedly communicated with a second guide pipe, the right end of the second guide pipe is fixedly communicated with the side wall of the filter press, the defluorination tank and the filter press are fixedly communicated with one another through a circulating pipe, a vertical pipe is fixedly communicated with the upper side wall of the defluorination tank, a screw feeder is fixedly communicated with the upper end of the vertical pipe, a defluorination agent storage tank is fixedly communicated with the upper side wall of the screw feeder, a weighing cylinder is arranged above the defluorination tank, the weighing cylinder is fixedly communicated with one liquid inlet pipe and is arranged outside the liquid inlet pipe, a solenoid valve is fixedly communicated with the weighing cylinder, a water level sensor is fixedly connected with the upper side wall of the weighing cylinder, a lower pipe is fixedly communicated with a partition plate, and a partition plate is connected with a liquid outlet, and a partition plate is connected with a partition mechanism, and a partition plate is connected with a liquid storage mechanism, the upper partition plate.

Preferably, actuating mechanism connects at the screw thread section of thick bamboo that separates a section of thick bamboo right side including rotating, the fixed cover of outer wall of screw thread section of thick bamboo is equipped with the bevel gear ring, separate the lower lateral wall fixedly connected with bent plate of a section of thick bamboo, the last lateral wall fixedly connected with motor of bent plate, the output fixedly connected with of motor and the bevel gear that the bevel gear ring matches each other, the screw thread section of thick bamboo internal thread has cup jointed the threaded rod, the left end of threaded rod be located separate a section of thick bamboo and with baffle fixed connection, control about the spacer block is conveniently controlled.

Preferably, separate the equal fixedly connected with locating plate of the upper and lower side inner wall of a section of thick bamboo, the constant head tank that matches each other with the locating plate is seted up to the pole wall of threaded rod, through mutually supporting of locating plate and constant head tank, avoids the threaded rod rotatory, makes the threaded rod only can remove about the horizontal direction, avoids the baffle to have the pivoted trend to make the baffle and separate the gap to appear between the section of thick bamboo.

Preferably, the upper side wall and the lower side wall of the partition board are both fixedly connected with sealing gaskets, so that the sealing performance of the partition board is improved.

Preferably, the upper port of the liquid outlet is of a bucket-shaped structure, so that the dilute sulfuric acid is conveniently gathered and collected.

Preferably, the inner wall of the defluorination pool is sprayed with an anti-corrosion layer, so that the anti-corrosion capability of the inner wall of the defluorination pool is improved.

Compared with the prior art, the utility model provides a phosphogypsum system acid purifies dilute sulfuric acid defluorination device possesses following beneficial effect:

this phosphogypsum system acid purifies dilute sulfuric acid defluorination device, through the defluorination pond that sets up, the pressure filter, the clear solution pond, the guide is responsible for, the clear solution pump, first passage, the filtration pump, the second passage, the circulating pipe, the standpipe, the screw feeder, the defluorination agent storage tank, the weighing cylinder, the feed liquor pipe, level sensor, the partition cylinder, the stock solution storehouse, the baffle, the liquid outlet, can be when defluorinating dilute sulfuric acid, ration is to carrying dilute sulfuric acid in the defluorination pond, make dilute sulfuric acid and the interior calcium oxide of defluorination pond fully react, when guaranteeing that the fluoride ion is whole to be purified in the dilute sulfuric acid, avoided the calcium oxide can remain too much stability, the utilization ratio of calcium oxide has been improved.

Drawings

Fig. 1 is a schematic structural diagram of a device for purifying dilute sulfuric acid and defluorinating in acid production from phosphogypsum provided by the utility model;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

In the figure: 1. a defluorination tank; 2. a filter press; 3. a clear liquid pool; 4. a material guide main pipe; 5. a clear liquid pump; 6. a first material guide pipe; 7. a filter pump; 8. a second material guide pipe; 9. a circulation pipe; 10. a vertical tube; 11. a screw feeder; 12. a defluorinating agent storage tank; 13. a weighing cylinder; 14. a liquid inlet pipe; 15. a water level sensor; 16. a separating cylinder; 17. a liquid storage bin; 18. a partition plate; 19. a liquid outlet; 20. a threaded barrel; 21. a bevel gear ring; 22. bending a plate; 23. a motor; 24. a bevel gear; 25. a threaded rod; 26. positioning a plate; 27. positioning a groove; 28. and a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a defluorination device for purifying dilute sulfuric acid by using phosphogypsum to prepare acid comprises a defluorination tank 1, wherein an anti-corrosion layer is sprayed on the inner wall of the defluorination tank 1, the anti-corrosion capability of the inner wall of the defluorination tank 1 is improved, a filter press 2 is arranged on the right side of the defluorination tank 1, a clear liquid tank 3 is arranged on the right side of the filter press 2, a main guide pipe 4 is fixedly communicated with the right side wall of the clear liquid tank 3, a clear liquid pump 5 is arranged outside the main guide pipe 4, the same first guide pipe 6 is fixedly communicated between the clear liquid tank 3 and the filter press 2, a filter pump 7 is fixedly connected with the right side wall of the defluorination tank 1, a second guide pipe 8 is fixedly communicated with the output end of the filter pump 7, the right end of the second guide pipe 8 is fixedly communicated with the side wall of the filter press 2, the same circulating pipe 9 is fixedly communicated between the defluorination tank 1 and the filter press 2, a vertical pipe 10 is fixedly communicated with the upper side wall of the defluorination tank 1, a screw feeder 11 is fixedly communicated with the upper end of the vertical pipe 10, the upper side wall of the screw feeder 11 is fixedly communicated with a defluorinating agent storage tank 12, a weighing cylinder 13 is arranged above the defluorinating pool 1, the weighing cylinder 13 is fixedly communicated with the defluorinating pool 1 through a same liquid inlet pipe 14, an electromagnetic valve is arranged outside the liquid inlet pipe 14, a water level sensor 15 is fixedly connected inside the weighing cylinder 13, the type of the water level sensor 15 is JZM5260/19W50, the upper side wall of the weighing cylinder 13 is fixedly communicated with a separation cylinder 16 through a lower pipe, the upper side wall of the separation cylinder 16 is communicated with a liquid storage bin 17 through an upper pipe, a partition plate 18 is slidably connected inside the separation cylinder 16, sealing gaskets 28 are fixedly connected on the upper side wall and the lower side wall of the partition plate 18, the sealing performance of the partition plate 18 is improved, a liquid outlet 19 is formed in the side wall of the partition plate 18, the upper port of the liquid outlet 19 is of a bucket structure, gathering and collecting of dilute sulfuric acid is facilitated, and the partition plate 18 is connected with a driving mechanism.

Actuating mechanism is including rotating the threaded cylinder 20 of connection on separating a section of thick bamboo 16 right side, the fixed cover of outer wall of threaded cylinder 20 is equipped with awl ring gear 21, separate the lower lateral wall fixedly connected with bent plate 22 of a section of thick bamboo 16, the last lateral wall fixedly connected with motor 23 of bent plate 22, the output fixedly connected with of motor 23 and the bevel gear 24 of awl ring gear 21 mutual matching, threaded rod 25 has been cup jointed to threaded cylinder 20 internal thread, the left end of threaded rod 25 is located separate a section of thick bamboo 16 and with baffle 18 fixed connection, conveniently control and remove about spacer 18.

Separate the equal fixedly connected with locating plate 26 of a section of thick bamboo 16's upper and lower side inner wall, the constant head tank 27 that matches each other with locating plate 26 is seted up to the pole wall of threaded rod 25, through mutually supporting of locating plate 26 and constant head tank 25, avoids threaded rod 25 rotatory, makes threaded rod 25 only can remove about the horizontal direction, avoids baffle 18 to have the pivoted trend to make baffle 18 and separate the appearance gap between a section of thick bamboo 16.

The utility model discloses in, during the use, starter motor 23 work, motor 23 passes through the mutually supporting drive of bevel gear 24 and bevel gear ring 21, bevel gear ring 21 can drive screw cylinder 20 rotatory, remove about screw-thread fit drive threaded rod 25, threaded rod 25 drives baffle 18 and removes left, thereby make liquid outlet 19 aim at top tube and low tube, thereby make dilute sulfuric acid in the stock solution storehouse 17 flow to in the weighing cylinder 13, when dilute sulfuric acid liquid level touches and touches level sensor 15, control baffle 18 removes to the right side, the top of symmetry cylinder 13 seals, then open the solenoid valve on feed liquor pipe 14, make dilute sulfuric acid get into defluorinating pond 1, simultaneously a certain amount of calcium oxide can be carried by screw feeder 11 and take off a defluorinating pond 1 interior individual dilute sulfuric acid and react in defluorinating agent storage tank 12, the device can be when defluorinating dilute sulfuric acid, ration is to carrying dilute sulfuric acid in the defluorinating pond, make dilute sulfuric acid and defluorinating pond internal calcium oxide fully react, when guaranteeing that the whole purifications of dilute sulfuric acid, the stability that calcium oxide can remain, the utilization ratio has been improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The device for purifying dilute sulfuric acid by using phosphogypsum to prepare acid comprises a defluorination tank (1) and is characterized in that a filter press (2) is arranged on the right side of the defluorination tank (1), a clear liquid tank (3) is arranged on the right side of the filter press (2), a guide main pipe (4) is fixedly communicated with the right side wall of the clear liquid tank (3), a clear liquid pump (5) is arranged outside the guide main pipe (4), a same first guide pipe (6) is fixedly communicated between the clear liquid tank (3) and the filter press (2), a filter pump (7) is fixedly connected with the right side wall of the defluorination tank (1), a second guide pipe (8) is fixedly communicated with the output end of the filter pump (7), the right end of the second guide pipe (8) is fixedly communicated with the side wall of the filter press (2), a same vertical pipe (9) is fixedly communicated between the defluorination tank (1) and the filter press (2), a vertical pipe (10) is fixedly communicated with the upper side wall of the defluorination tank (1), a spiral feed liquor feeding pipe (11) is fixedly communicated with a spiral feeding tank (13), a spiral feeding pipe (13) is communicated with a spiral feeding tank (12) and a spiral feeding tank (13) is fixedly communicated with the defluorination tank (13), the utility model discloses a scale, including weighing cylinder (13), the interior fixedly connected with level sensor (15) of distinguishing, the last lateral wall of weighing cylinder (13) has through low tube fixed communication and separates a section of thick bamboo (16), the last lateral wall that separates a section of thick bamboo (16) has stock solution storehouse (17) through the upper tube intercommunication, sliding connection has baffle (18) in separating a section of thick bamboo (16), liquid outlet (19) have been seted up to the lateral wall of baffle (18), baffle (18) and actuating mechanism connect.

2. The device for purifying dilute sulfuric acid and defluorinating in acid production by phosphogypsum as claimed in claim 1, wherein the driving mechanism comprises a threaded cylinder (20) rotatably connected to the right side of the separating cylinder (16), a bevel gear ring (21) is fixedly sleeved on the outer wall of the threaded cylinder (20), a bent plate (22) is fixedly connected to the lower side wall of the separating cylinder (16), a motor (23) is fixedly connected to the upper side wall of the bent plate (22), a bevel gear (24) mutually matched with the bevel gear ring (21) is fixedly connected to the output end of the motor (23), a threaded rod (25) is sleeved in the threaded cylinder (20), and the left end of the threaded rod (25) is located in the separating cylinder (16) and is fixedly connected with the partition plate (18).

3. The device for removing fluorine from dilute sulfuric acid in the acid production from phosphogypsum according to claim 2, characterized in that the inner walls of the upper and lower sides of the partition cylinder (16) are fixedly connected with positioning plates (26), and the wall of the threaded rod (25) is provided with positioning grooves (27) matched with the positioning plates (26).

4. The device for purifying dilute sulfuric acid from phosphogypsum acid production according to claim 1, characterized in that the upper and lower side walls of the partition plate (18) are fixedly connected with sealing gaskets (28).

5. The device for purifying dilute sulfuric acid and removing fluorine in phosphogypsum acid production according to claim 1, characterized in that the upper port of the liquid outlet (19) is of a bucket-shaped structure.

6. The device for removing fluorine from dilute sulfuric acid for purifying acid produced by phosphogypsum according to claim 1, wherein the inner wall of the defluorination pool (1) is coated with an anti-corrosion layer.