CN213475435U - A processing apparatus that is arranged in pyrite system acid dilute sulphuric acid - Google Patents
A processing apparatus that is arranged in pyrite system acid dilute sulphuric acid Download PDFInfo
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- CN213475435U CN213475435U CN202022064475.0U CN202022064475U CN213475435U CN 213475435 U CN213475435 U CN 213475435U CN 202022064475 U CN202022064475 U CN 202022064475U CN 213475435 U CN213475435 U CN 213475435U
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Abstract
The utility model discloses a treatment device for dilute sulfuric acid in pyrite-based sulfuric acid production, which comprises a first collecting tank, a neutralizing tank, a stirrer, a first filter, a second collecting tank and a third collecting tank; the first collecting tank is connected with a first pipeline; the first collecting tank is connected with the neutralizing tank through a second pipeline, and the neutralizing tank is connected with a third pipeline; the stirrer is arranged in the neutralization tank and comprises a driving unit and a stirring unit; the neutralization tank is connected with the first filter through a fourth pipeline, the first filter is used for filtering solid impurities in sulfuric acid, the first filter is connected with the second collection tank through a fifth pipeline, and the first filter is connected with the third collection tank through a sixth pipeline. According to the technical scheme, the first filter filters the residual water into the third collecting tank. The calcium sulfate can be sold as a product, and the water can be recycled by a purification system, so that the problem of environmental pollution is solved, and good economic benefits are achieved.
Description
Technical Field
The utility model relates to the technical field of chemical industry, especially, relate to a processing apparatus that is arranged in dilute sulphuric acid of pyrite system acid.
Background
At present, in the production process of preparing acid from pyrite, about 20 tons of dilute sulfuric acid with the concentration of 10% is generated in the gas purification process every day, and the dilute sulfuric acid contains a certain amount of metals such as iron slag and the like, has low concentration and cannot be directly used. If the part of dilute sulfuric acid is directly discharged, precious sulfur, iron slag and the like are wasted, and serious environmental pollution is caused.
SUMMERY OF THE UTILITY MODEL
Therefore, a treatment device for dilute sulfuric acid in pyrite acid making needs to be provided, and the problem of recovering the dilute sulfuric acid is solved.
In order to achieve the purpose, the utility model provides a treatment device for dilute sulfuric acid in pyrite-based sulfuric acid production, which comprises a first collecting tank, a neutralizing tank, a stirrer, a first filter, a second collecting tank and a third collecting tank;
the first collecting tank is connected with a first pipeline, and the first pipeline is used as a channel for dilute sulfuric acid to flow into the first collecting tank;
the first collecting tank is connected with the neutralization tank through a second pipeline, the neutralization tank is connected with a third pipeline, and the third pipeline is used as a passage for lime solution to flow into the neutralization tank;
the stirrer is arranged in the neutralization pond and comprises a driving unit and a stirring unit, and the driving unit is used for driving the stirring unit to rotate so as to stir the dilute sulfuric acid;
the neutralization pond is connected with the first filter through a fourth pipeline, the first filter is used for filtering solid impurities in sulfuric acid, the first filter is connected with the second collecting pond through a fifth pipeline, the second collecting pond is used for collecting the solid impurities filtered by the first filter, the first filter is connected with the third collecting pond through a sixth pipeline, and the third collecting pond is used for being connected with a purification system through a seventh pipeline.
Further, the first filter is a plate filter.
Further, the driving unit comprises a motor, and the stirring unit comprises a rotating shaft and a rotating head;
the motor sets up one side in the neutralization pond, the output shaft of motor with the one end of pivot is connected, the other end of pivot is provided with the rotating head, the other end of pivot stretches into in the neutralization pond, the rotating head is arranged in the neutralization pond.
Further, the rotary head includes a plurality of fan blades.
Further, the device also comprises an eighth pipeline and a valve;
the eighth pipeline is connected with the first collecting tank, the eighth pipeline is provided with the valve, and the eighth pipeline is used as a channel for flowing out of solid impurities.
Further, a valve is arranged on the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline or the sixth pipeline.
Further, a pump is respectively arranged on the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline or the sixth pipeline.
Further, the driving unit comprises a rotating base and a magnetic object, wherein the magnetic object is arranged on the rotating base;
the stirring unit comprises a central shaft, a cross rod and a connecting rod, wherein the central shaft is arranged at the bottom of the neutralization pond, the cross rod is arranged on the central shaft, the connecting rod is rotatably arranged at the end part of the cross rod, the connecting rod is a magnetic connecting rod, and the rotating base is arranged below the connecting rod;
the magnetic object drives the magnetic connecting rod to rotate to stir the dilute sulfuric acid.
Different from the prior art, the technical scheme is that dilute sulfuric acid and calcium hydroxide in lime water are subjected to neutralization reaction in a neutralization pond to generate calcium sulfate and water, a first filter filters the calcium sulfate to a second collection pond, and the first filter filters the rest water to a third collection pond. The calcium sulfate can be sold as a product, and the water can be recycled by a purification system, so that the problem of environmental pollution is solved, and good economic benefits are achieved.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a treatment device for dilute sulfuric acid in pyrite-based sulfuric acid production according to this embodiment.
Description of reference numerals:
1. a first collection tank;
11. a first conduit;
12. an eighth conduit;
2. a neutralization pond;
21. a third pipeline;
3. a stirrer;
31. a motor;
32. a rotating shaft;
33. rotating the head;
4. a first filter;
5. a second collection tank;
6. a third collection tank;
61. a seventh pipe;
7. a pump;
8. a valve;
9. a decontamination system.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the present embodiment provides a treatment apparatus for dilute sulfuric acid in pyrite-based sulfuric acid production, which includes a first collecting tank 1, a neutralizing tank 2, a stirrer 3, a first filter 4, a second collecting tank 5, and a third collecting tank 6. The first collecting tank 1 is connected with a first pipeline 11, and the first pipeline 11 is used as a channel for flowing dilute sulfuric acid into the first collecting tank 1. The first collecting tank 1 is connected with the neutralization tank 2 through a second pipeline, the neutralization tank 2 is connected with a third pipeline 21, and the third pipeline 21 is used as a passage for lime solution to flow into the neutralization tank 2. The stirrer 3 is arranged in the neutralization pond 2, the stirrer 3 comprises a driving unit and a stirring unit, and the driving unit is used for driving the stirring unit to rotate to stir the dilute sulfuric acid, so that the dilute sulfuric acid and the lime solution react more uniformly. The neutralization tank 2 is connected with the first filter 4 through a fourth pipeline, the first filter 4 is used for filtering solid impurities in sulfuric acid, the first filter 4 is connected with the second collecting tank 5 through a fifth pipeline, and the second collecting tank 5 is used for collecting the solid impurities filtered by the first filter 4, namely a port of the first filter 4 for filtering the solid impurities is connected with the second collecting tank 5 through a fifth pipeline. The first filter 4 is connected to the third collecting tank 6 by a sixth pipe, and the third collecting tank 6 is connected to the purification system 9 by a seventh pipe 61, i.e. the port of the first filter 4 filtering out the liquid is connected to the third collecting tank 6 by the sixth pipe.
In the neutralization tank, the dilute sulfuric acid and calcium hydroxide in the lime solution are subjected to neutralization reaction to generate calcium sulfate and water, and the chemical equation of the reaction is as follows: ca (OH)2+H2SO4＝CaSO4↓+2H2And O. The first filter filters out calcium sulfate to the second collection tank, and the first filter filters the remaining water to the third collection tank. The calcium sulfate can be sold as a product, and the water can be recycled by a purification system, so that the problem of environmental pollution is solved, and good economic benefits are achieved.
In the present embodiment, the driving unit includes a motor 31, and the stirring unit includes a rotating shaft 32 and a rotating head 33. The motor 31 may be a stepping motor, the motor 31 may be disposed at one side of the neutralization tank 2, and the motor may be disposed above, below, or inside the neutralization tank 2. The output shaft of motor with the one end of pivot 32 is connected, the other end of pivot 32 is provided with rotating head 33, the other end of pivot 32 stretches into in the neutralization pond 2, rotating head 33 is arranged in neutralization pond 2. The motor drives the rotating shaft to rotate, so that the rotating head is driven to stir the dilute sulfuric acid in the neutralization tank, the dilute sulfuric acid and the lime solution are uniformly reacted, and the influence on the quality due to incomplete reaction of the dilute sulfuric acid and the lime solution is avoided.
In this embodiment, the rotating head includes a plurality of blades, and the plurality of blades are disposed around the center of the rotating head, such as the blades of a fan. Alternatively, in some embodiments, the rotating head is helical, which may also adequately agitate the solution. Even the rotating shaft may have a spiral or concave-convex structure, so as to sufficiently stir the solution.
In some embodiments, the driving unit includes a rotating base and a magnetic object, the rotating base includes a rotating motor and a base, a rotating shaft of the rotating motor is connected to a bottom surface of the base, the rotating motor drives the base to rotate, and the magnetic object is disposed on a top surface of the base. The stirring unit comprises a central shaft, a cross rod and a connecting rod, the central shaft is arranged at the bottom of the neutralization pond, the cross rod is arranged at the top of the central shaft, the connecting rod is rotatably arranged at the end part of the cross rod, and the connecting rod is a magnetic connecting rod. The driving unit is arranged below the connecting rod, when the rotating base rotates, the position of the magnetic object changes, and the magnetic object attracts the connecting rod to rotate, so that the connecting rod stirs dilute sulfuric acid.
Preferably, the number of the connecting rods is two, and the two connecting rods are respectively arranged at one end of the cross rod. Preferably, the number of the driving units is two, and one driving unit is arranged below one connecting rod. The two stirrers improve the stirring efficiency and shorten the reaction time to a certain extent.
It is noted that the connecting rod is connected at the ends of the cross bars by a universal joint, so that the connecting rod can be rotated over a wide range.
It should be noted that the magnetism of the magnetic object and the magnetism of the connecting rod may be the same, and the connecting rod is driven to rotate according to the principle of the same magnetic attraction. Or the magnetism of the magnetic object and the magnetism of the connecting rod can be opposite, and the connecting rod is driven to rotate according to the principle that the opposite magnetism repels each other.
In this embodiment, in order to reduce the impurities in the dilute sulfuric acid solution, iron slag or other solid impurities contained in the dilute sulfuric acid solution may be discharged. The processing means comprise an eighth conduit 12 and a valve. The eighth pipe is used for discharging the iron slag. Because the iron slag in the dilute sulfuric acid is heavier, the iron slag can gradually settle to the bottom of the tank and then be discharged through an eighth pipeline.
In order to better discharge the iron slag, a second filter is also arranged. The second filter is connected with the first collecting tank 1 through the eighth pipeline 12, and the eighth pipeline 12 is provided with the valve. The second filter is used for filtering solid impurities in the first collecting tank 1, and the eighth pipeline 12 is used as an outflow channel of the solid impurities filtered by the second filter.
In a preferred embodiment, in order to control whether the liquid flows into the pipes or not, a valve 8 is arranged on the first pipe 11, the second pipe, the third pipe 21, the fourth pipe, the fifth pipe, the sixth pipe and/or the seventh pipe. The inflow or non-inflow of dilute sulphuric acid or lime solution in the pipeline is controlled by opening and closing the valve.
In a preferred embodiment, a pump 7 is provided on each of the first, second, third, fourth, fifth or sixth and/or seventh pipes 11, 21, for controlling the liquid in the pipes.
In the present embodiment, the first filter 4 may be a cyclone, a high-speed tube centrifuge, an FBL filter, or a plate filter (also referred to as a plate-and-frame filter press). Preferably, the first filter is a plate filter.
One end of the first pipeline is connected to a production device of dilute sulfuric acid in pyrite-based sulfuric acid production, and the other end of the first pipeline is connected to the first collecting tank.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (8)
1. A treatment device for dilute sulfuric acid in pyrite-based sulfuric acid production is characterized by comprising a first collecting tank, a neutralizing tank, a stirrer, a first filter, a second collecting tank and a third collecting tank;
the first collecting tank is connected with a first pipeline, and the first pipeline is used as a channel for dilute sulfuric acid to flow into the first collecting tank;
the first collecting tank is connected with the neutralization tank through a second pipeline, the neutralization tank is connected with a third pipeline, and the third pipeline is used as a passage for lime solution to flow into the neutralization tank;
the stirrer is arranged in the neutralization pond and comprises a driving unit and a stirring unit, and the driving unit is used for driving the stirring unit to rotate so as to stir the dilute sulfuric acid;
the neutralization pond is connected with the first filter through a fourth pipeline, the first filter is used for filtering solid impurities in sulfuric acid, the first filter is connected with the second collecting pond through a fifth pipeline, the second collecting pond is used for collecting the solid impurities filtered by the first filter, the first filter is connected with the third collecting pond through a sixth pipeline, and the third collecting pond is used for being connected with a purification system through a seventh pipeline.
2. The apparatus for treating dilute sulfuric acid in pyrite-based sulfuric acid production according to claim 1, wherein said first filter is a plate filter.
3. The apparatus for treating dilute sulfuric acid in pyrite-based sulfuric acid production according to claim 1, wherein said driving unit comprises a motor, said stirring unit comprises a rotating shaft and a rotating head;
the motor sets up one side in the neutralization pond, the output shaft of motor with the one end of pivot is connected, the other end of pivot is provided with the rotating head, the other end of pivot stretches into in the neutralization pond, the rotating head is arranged in the neutralization pond.
4. The apparatus as claimed in claim 3, wherein the rotating head includes a plurality of blades.
5. The apparatus for treating dilute sulfuric acid in pyrite-based sulfuric acid production according to claim 1, further comprising an eighth pipeline and a valve;
the eighth pipeline is connected with the first collecting tank, the eighth pipeline is provided with the valve, and the eighth pipeline is used as a channel for flowing out of solid impurities.
6. The apparatus according to claim 1, wherein a valve is arranged on the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline or the sixth pipeline.
7. The apparatus according to claim 1, wherein the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline or the sixth pipeline are respectively provided with a pump.
8. The apparatus for treating dilute sulfuric acid in pyrite-based sulfuric acid production according to claim 1, wherein said driving unit comprises a rotating base and a magnetic object, said magnetic object being disposed on said rotating base;
the stirring unit comprises a central shaft, a cross rod and a connecting rod, the central shaft is arranged at the bottom of the neutralization pond, the cross rod is arranged on the central shaft, the connecting rod is rotatably arranged at the end part of the cross rod, the connecting rod is a magnetic connecting rod, and the rotating base is arranged below the connecting rod;
the magnetic object drives the magnetic connecting rod to rotate to stir the dilute sulfuric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022064475.0U CN213475435U (en) | 2020-09-18 | 2020-09-18 | A processing apparatus that is arranged in pyrite system acid dilute sulphuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022064475.0U CN213475435U (en) | 2020-09-18 | 2020-09-18 | A processing apparatus that is arranged in pyrite system acid dilute sulphuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213475435U true CN213475435U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022064475.0U Active CN213475435U (en) | 2020-09-18 | 2020-09-18 | A processing apparatus that is arranged in pyrite system acid dilute sulphuric acid |
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|---|---|
| CN (1) | CN213475435U (en) |
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2020
- 2020-09-18 CN CN202022064475.0U patent/CN213475435U/en active Active
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