CN216204454U - Ferrous chloride solution cooling device - Google Patents
Ferrous chloride solution cooling device Download PDFInfo
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- CN216204454U CN216204454U CN202122494634.5U CN202122494634U CN216204454U CN 216204454 U CN216204454 U CN 216204454U CN 202122494634 U CN202122494634 U CN 202122494634U CN 216204454 U CN216204454 U CN 216204454U
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- chloride solution
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Abstract
The utility model relates to a ferrous chloride solution cooling device, and belongs to the field of industrial waste acid treatment equipment. A ferrous chloride solution cooling device comprises a container, a cooling device and a cooling device, wherein the container is empty and has a certain height and is used for dropping a solution; the top and the bottom of the container are respectively provided with a liquid inlet pipe and a liquid outlet pipe; the liquid distribution part is arranged at the top of the container, and pores are arranged on the liquid distribution part and used for guiding out the liquid in the liquid distribution part and falling into the container; and the sealing cover is positioned above the container, is matched with the shape of the container in shape and is used for sealing the upper part of the container so as to seal the whole container. The negative pressure container capable of forming the water curtain is adopted to vacuumize the environment where the ferrous chloride solution is located, the solution is rapidly evaporated and cooled by reducing the pressure and the boiling point, the solution is not required to be cooled by a heat exchanger, and the condition that the heat exchanger is blocked is avoided.
Description
Technical Field
The utility model relates to the field of industrial waste acid treatment equipment, in particular to a treatment device for chemical product production and metallurgical hydrochloric acid pickling waste acid, namely a ferrous chloride solution cooling device.
Background
With the production of large-scale units, the waste acid amount generated by the continuous pickling production line of cold rolled steel is very large. Calculated according to a production line with general specifications, the amount of waste acid generated per hour can reach 8m3The total production of waste acid is about 500m per day3。
In order to treat the waste acid and improve the residual value of the waste acid, the conversion of the waste acid into high-purity ferrous chloride is an important method.
In the ferrous chloride purification process, the following steps are included:
1) firstly, reducing the content of hydrochloric acid, heating the waste acid to be more than 80 ℃, and consuming free hydrochloric acid through scrap iron in a dissolving tank to ensure that the content of hydrochloric acid is lower than 5 g/L;
2) reducing the temperature of the solution to below 45 ℃ by a graphite heat exchanger, raising the pH value by ammonia water, and carrying out aeration oxidation to form ferric hydroxide or aluminum hydroxide;
3) adding a flocculating agent to adsorb impurities, and then sending the mixture to a settling tank for precipitation to obtain high-purity ferrous chloride supernatant.
If the pH value of the solution is directly increased under the high-temperature condition in the step 2), colloids such as ferric hydroxide, aluminum hydroxide and the like can be formed, and then the indirect heat exchanger is used for cooling, so that the heat exchanger is seriously scaled, the performance of the heat exchanger is reduced, and even the function of the heat exchanger is lost.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
The utility model provides a ferrous chloride solution cooling device, aiming at the problem that in the prior art, ammonia water is added under a high-temperature condition to increase the pH value, so that the solution forms colloids such as ferric hydroxide, aluminum hydroxide and the like, and equipment is blocked. As hydrochloric acid in the ferrous chloride solution is converted into ammonium chloride and has no volatile corrosion factors, the temperature of the ferrous chloride solution can be reduced by adopting a vacuum evaporation mode.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A ferrous chloride solution cooling device comprises a container, a cooling device and a cooling device, wherein the container is empty and has a certain height and is used for dropping a solution; the top and the bottom of the container are respectively provided with a liquid inlet pipe and a liquid outlet pipe; the liquid distribution part is arranged at the top of the container, and pores are arranged on the liquid distribution part and used for guiding out the liquid in the liquid distribution part and falling into the container; and the sealing cover is positioned above the container, is matched with the shape of the container in shape and is used for sealing the upper part of the container so as to seal the whole container.
As a possible embodiment, the container is of a square box structure, and the liquid distribution part is formed by horizontally arranging a plurality of strip-shaped pipe grooves.
As a possible embodiment, a surrounding frame is arranged around the upper surface of the container to form a concave primary accommodating groove on the upper surface of the container, and the strip-shaped pipe grooves are arranged at intervals in the primary accommodating groove.
As a possible embodiment, the liquid distribution part is a strip-shaped pipe which is hermetically embedded in the primary accommodating groove; the pore is formed at the lower part of the strip-shaped pipe, and the upper part of the strip-shaped pipe and the primary accommodating groove form a sealing cover together.
As a possible embodiment, the liquid distribution portion is a bar-shaped groove; the pore is arranged at the bottom of the strip-shaped bottom groove; the sealing cover is a frame-shaped cover body and covers the primary accommodating groove and the strip-shaped groove.
As a possible embodiment, the bottom of the primary holding tank is provided with a negative pressure hole for connecting a negative pressure device.
As a possible embodiment, the strip-shaped groove is a secondary accommodating groove embedded in the primary accommodating groove; the upper edge of the side wall of the strip-shaped groove is spliced on the bottom surface of the primary accommodating groove.
As a possible embodiment, the cover is provided with a negative pressure hole for connecting a negative pressure device.
As a possible embodiment, the bottom of the strip-type groove is in a V shape, and the pore is arranged at the bottom of the V-shaped structure and used for centralized drainage.
As a possible embodiment, the apertures are slits for forming the water curtain.
3. Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that: the negative pressure container capable of forming the water curtain is adopted to vacuumize the environment where the ferrous chloride solution is located, the solution is rapidly evaporated and cooled by reducing the pressure and the boiling point, the solution is not required to be cooled by a heat exchanger, and the condition that the heat exchanger is blocked is avoided. Meanwhile, the concentration of the concentrated ferrous chloride solution formed after evaporation is higher, and according to the actual production, the concentrated ferrous chloride solution can be concentrated by 5-10%, so that the preparation of high-purity ferrous chloride supernatant is facilitated.
Drawings
FIG. 1 is a perspective view of embodiment 1 or 2;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a perspective view of embodiment 3;
fig. 4 is an enlarged view of a portion B in fig. 1.
In the figure:
1. a container;
1a, a liquid inlet pipe; 1b, a liquid discharge pipe; 1c, enclosing a frame; 1d, primary accommodating grooves;
2. a liquid distribution portion;
2a, pores; 2b, a strip-shaped pipe; 2c, a strip-shaped groove;
3. sealing the cover;
3a and a negative pressure hole.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the embodiment.
Example 1
As shown in fig. 1-4, a ferrous chloride solution cooling device comprises a container 1 with a square box structure. The top of the container 1 is provided with a liquid distribution part 2 for spraying a water curtain in the container 1 to accelerate the evaporation of the liquid by using the liquid to form the water curtain.
Specifically, the top of the container 1 forms an inwards concave primary accommodating groove 1d, and four side walls of the primary accommodating groove 1d enclose a frame 1c for a plate structure formed around the top of the container 1. The bottom of the primary accommodating groove 1d is provided with a plurality of strip-shaped horizontal plates which are uniformly arranged, and strip-shaped pipe grooves are arranged in the middle of the strip-shaped horizontal plates at intervals. The strip-shaped pipe groove is the liquid distributing part 2. The bar-shaped horizontal plate is used as a middle partition, so that the connection strength of the top of the container 1 can be improved, and impurities can be prevented from falling into the container 1. The end of the strip-shaped pipe groove is connected with the liquid inlet pipe 1a, and the bottom of the strip-shaped pipe groove is provided with a slit for jetting water flow to form a water curtain.
When the acid pickling line is used, waste acid discharged from the acid pickling line is heated to 90 ℃ and is continuously sent into a dissolving tank, and iron reacts with HCl in the dissolving tank to replace elements with positive potential compared with iron. And (4) finishing primary impurity removal and HCl content reduction in the dissolving tank, and enabling the solution to flow out of the dissolving tank. The temperature of the ferrous chloride solution flowing out of the dissolving tank is above 80 ℃, and the HCl content is less than 5 g/L. Then adjusting the pH value of the solution to be more than 3.5 by using an alkaline substance. Then aerating and oxidizing to form ferric hydroxide or aluminum hydroxide colloid, finally introducing the ferrous chloride solution into the negative pressure cooling device, reducing the boiling point of the solution by reducing the pressure, accelerating the volatilization and concentration of the ferrous chloride solution, reducing the waste liquid amount and reducing the temperature. Specifically, the air pressure in the container 1 needs to be reduced before the water curtain is formed. In this embodiment, because one-level holding tank 1d indent, the strip pipe socket sets up in one-level holding tank 1d, and 1 upper portion of container is comparatively level and smooth, can cover flat-plate-shaped closing cap 3. The lid 3 is provided with a negative pressure hole 3a so that the negative pressure machine can draw air from the negative pressure hole 3a to reduce the internal pressure of the entire container 1. Then the ferrous chloride solution is led into the strip-shaped pipe groove from the liquid inlet pipe 1a, and the solution falls from the bottom holes 2a of the strip-shaped pipe grooves and enters the container 1. The aperture 2a is preferably a slit. The container 1 has a considerable height which is enough to form a larger area of water curtain for the solution, thereby increasing the specific surface area of the solution and accelerating the volatilization of the solution. After the solution fell on the bottom of the container 1, the solution was discharged from a drain pipe 1b at the bottom.
Because the container 1 is a square box structure, a plurality of strip-shaped pipe grooves with the same size are conveniently arranged in parallel at the top, and the uniformity of liquid discharge efficiency and the uniformity of internal pressure are improved.
Example 2
As shown in fig. 1 and 2, on the basis that other technical solutions of embodiment 1 remain unchanged, in this embodiment, the strip-shaped pipe groove specifically adopts a groove structure, i.e., a strip-shaped groove 2 c. The strip-shaped groove 2c is a secondary accommodating groove embedded in the primary accommodating groove 1d, and the upper edge of the side wall of the strip-shaped groove 2c is hermetically spliced on the bottom surface of the primary accommodating groove 1 d.
In use, the strip-shaped groove 2c is hermetically formed in the primary holding tank 1d, so that the liquid in the liquid inlet pipe 1a can be directly introduced into the primary holding tank 1 d. And then overflows into the strip-shaped groove 2c which is more concave relative to the primary accommodating groove 1d, and finally falls down from the pore 2a in the strip-shaped groove 2c to form a water curtain.
Because the strip-shaped pipe groove in the embodiment is of a groove structure, the bottom of the strip-shaped groove 2c is of a V shape, and the hole 2a is formed in the bottom of the V-shaped structure and used for centralized drainage.
Example 3
As shown in fig. 3 and 4, on the basis that the other technical solutions of embodiment 1 remain unchanged, in this embodiment, the strip-type pipe groove specifically adopts a pipe structure, i.e., a strip-type pipe 2 b. The strip-shaped pipe 2b is embedded in the primary accommodating groove 1d in a sealing manner. The pore 2a is formed at the lower part of the strip pipe 2b, and the semicircular pipe structure at the upper part of the strip pipe 2b and the primary accommodating groove 1d together form the sealing cover 3, so that the container 1 in the embodiment does not adopt a separate sealing cover 3. A negative pressure hole 3a as a vacuum pumping is provided on the bottom surface of the primary accommodation groove 1 d.
In order to ensure that the ferrous chloride solution in the container 1 flows out smoothly under the negative pressure condition, a liquid pump is added at the position of the liquid discharge pipe 1b to resist the backflow of the solution caused by the internal negative pressure.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which shall fall within the scope of the claimed invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a ferrous chloride solution cooling device which characterized in that: comprises that
A container (1) having a certain height and empty inside for dropping a solution; the top and the bottom of the container (1) are respectively provided with a liquid inlet pipe (1a) and a liquid outlet pipe (1 b);
the liquid distribution part (2) is arranged at the top of the container (1), and is provided with a pore (2a) for leading out the liquid in the liquid distribution part (2) and dropping into the container (1);
and the sealing cover (3) is positioned above the container (1) and is matched with the container (1) in shape, and is used for sealing the upper part of the container (1) so as to seal the container (1) integrally.
2. The ferrous chloride solution cooling device of claim 1, wherein:
the container (1) is of a square box body structure, and the liquid distribution part (2) is formed by horizontally arranging a plurality of strip-shaped pipe grooves.
3. The ferrous chloride solution cooling device of claim 2, wherein:
the periphery of the upper surface of the container (1) is provided with a surrounding frame (1c) so as to form an inwards concave primary accommodating groove (1d) in the upper surface of the container (1), and the strip-shaped pipe grooves are arranged in the primary accommodating groove (1d) at intervals.
4. A ferrous chloride solution cooling device as claimed in claim 3, wherein:
the liquid distribution part (2) is a strip-shaped pipe (2b) and is embedded in the primary accommodating groove (1d) in a sealing way; the pore (2a) is formed at the lower part of the strip-shaped pipe (2b), and the upper part of the strip-shaped pipe (2b) and the primary accommodating groove (1d) jointly form a sealing cover (3).
5. A ferrous chloride solution cooling device as claimed in claim 3, wherein:
the liquid distribution part (2) is a strip-shaped groove (2 c); the pore (2a) is arranged at the bottom of the strip-shaped groove (2 c); the sealing cover (3) is a frame-shaped cover body and covers the primary accommodating groove (1d) and the strip-shaped groove (2 c).
6. The ferrous chloride solution cooling device of claim 4, wherein:
and the bottom of the primary accommodating groove (1d) is provided with a negative pressure hole (3a) for connecting negative pressure equipment.
7. The ferrous chloride solution cooling device of claim 5, wherein:
the strip-shaped groove (2c) is a secondary accommodating groove embedded in the primary accommodating groove (1 d); the upper edge of the side wall of the strip-shaped groove (2c) is spliced on the bottom surface of the primary accommodating groove (1 d).
8. The ferrous chloride solution cooling device of claim 5, wherein:
the sealing cover (3) is provided with a negative pressure hole (3a) for connecting negative pressure equipment.
9. The ferrous chloride solution cooling device of claim 5, wherein:
the bottom of the strip-shaped groove (2c) is V-shaped, and the pore (2a) is arranged at the bottom of the V-shaped structure and used for centralized drainage.
10. The ferrous chloride solution cooling device of claim 1, wherein:
the apertures (2a) are slits for forming a water curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122494634.5U CN216204454U (en) | 2021-10-15 | 2021-10-15 | Ferrous chloride solution cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122494634.5U CN216204454U (en) | 2021-10-15 | 2021-10-15 | Ferrous chloride solution cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216204454U true CN216204454U (en) | 2022-04-05 |
Family
ID=80882819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122494634.5U Active CN216204454U (en) | 2021-10-15 | 2021-10-15 | Ferrous chloride solution cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216204454U (en) |
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2021
- 2021-10-15 CN CN202122494634.5U patent/CN216204454U/en active Active
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Effective date of registration: 20220629 Address after: 230000 Hefei Demonstration Park of Circular Economy in Anhui Province Patentee after: MAGANG Group HOLDING COMPANY L Address before: 231600 East Jingliu road and South Weiwu Road, Hefei Circular Economy Demonstration Park, Anhui Province Patentee before: MAGANG (HEFEI) SHEET Co.,Ltd. |