CN210596272U - Steel pickling waste acid separation regeneration utilizes device - Google Patents
Steel pickling waste acid separation regeneration utilizes device Download PDFInfo
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- CN210596272U CN210596272U CN201921499742.8U CN201921499742U CN210596272U CN 210596272 U CN210596272 U CN 210596272U CN 201921499742 U CN201921499742 U CN 201921499742U CN 210596272 U CN210596272 U CN 210596272U
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Abstract
The utility model discloses a steel pickling spent acid separation recycle device, including the first jar of body and the second jar of body, first jar of body bottom height is greater than second jar of body top height, be fixed with on the first jar of body lateral wall advance sour pipe and go out sour pipe with first jar of body intercommunication, first jar of internal fixation has the inner tube, first jar of body top is fixed with the first honeycomb duct that stretches into the inner tube inside, first jar of body bottom is fixed with and is used for leading-in the internal second honeycomb duct of second jar with the solid-liquid mixture in the inner tube, install on the second jar of body and be used for the centrifugal subassembly with solid-liquid separation. In the utility model, during crystallization, workers only need to communicate the acid outlet pipe, the acid inlet pipe and the refrigerating fluid circulating system, so that refrigerating fluid circulation is formed between the outer wall of the inner cylinder and the inner wall of the first tank body, and ferrous sulfate in the pickling waste acid is crystallized and separated out; after ferrous sulfate crystals are separated out, the electromagnetic valve is opened, so that waste acid is led into the second tank body, and the waste acid is centrifuged by the centrifugal assembly, so that solid-liquid separation is realized.
Description
Technical Field
The utility model relates to a cracker technical field especially relates to a steel pickling spent acid separation regeneration utilizes device.
Background
At present, the waste acid in China has huge production amount, relatively extensive resource utilization, unobvious technical progress, unclear business model and huge challenge on resource utilization. In the metal processing process, due to the requirements of the production process, the metal surface needs to be subjected to acid pickling treatment, dilute sulfuric acid with the initial concentration of less than 25% is generally adopted, but the sulfuric acid concentration is continuously reduced along with the acid pickling process, and the waste acid solution with the concentration of less than 5% is generally not used when the ferrous sulfate content is more than 280 g/L. The unusable acid solution is called waste acid, and the treatment of the waste acid brings great difficulty and cost to enterprises, so that the enterprises are suffering from the waste acid.
The patent reference CN207483852U published in the Chinese application discloses a steel pickling waste acid cracking regeneration device, which comprises a waste acid tank, an acid filter, a preconcentrator, a Venturi scrubber, a roasting furnace, an absorption tower, a tail gas processor, a storage bin and a regenerated acid collecting tank, wherein the acid filter is respectively connected with the waste acid tank and the preconcentrator through pipelines, the preconcentrator is connected with the Venturi scrubber through pipelines, the Venturi scrubber is respectively connected with the roasting furnace and a first absorption tower through pipelines, the roasting furnace is respectively connected with the storage bin and the other section of the Venturi scrubber through pipelines, the middle lower end of the first absorption tower is respectively connected with a second absorption tower and the regenerated acid collecting tank through pipelines, and the upper end and the lower end of the second absorption tower are respectively connected with the tail gas processor and the regenerated acid collecting tank through pipelines.
The steel pickling waste acid separation and regeneration device in the technical scheme can recycle the steel pickling waste acid, and reduces the waste acid treatment cost. However, the waste acid treatment process in the technical scheme is complicated, more equipment is needed, and the equipment capital investment is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a steel pickling spent acid separation regeneration utilizes device, the processing procedure is simple, and required equipment is less, has reduced the equipment fund input.
The utility model discloses a following technical scheme realizes: the utility model provides a steel pickling spent acid separation regeneration utilizes device, includes the first jar of body and the second jar of body, first jar of body bottom highly is greater than the second jar of body top height, be fixed with on the first jar of body lateral wall and advance sour pipe and go out sour pipe with the first jar of body intercommunication, the first jar of internal fixation has the inner tube, first jar of body top is fixed with the first honeycomb duct that stretches into the inner tube inside, first jar of body bottom is fixed with and is used for pouring the solid-liquid mixture in the inner tube into the internal second honeycomb duct of second jar, install the solenoid valve that is used for controlling it to switch on the second honeycomb duct, install the centrifugal component who is used for solid-liquid separation on the second jar body.
By the technical scheme, when the steel pickling waste acid needs to be cracked and regenerated, workers only need to pour the overheated waste acid into the inner cylinder from the first guide pipe, communicate the acid outlet pipe with an external cooling device, and then communicate the acid inlet pipe with a water outlet of the cooling device, so that refrigerating fluid circulation is formed between the outer wall of the inner cylinder and the inner wall of the first tank body, and the overheated pickling waste acid is cooled, so that ferrous sulfate in the pickling waste acid is crystallized and separated out; after ferrous sulfate crystals are separated out, the electromagnetic valve is opened, so that solid-liquid mixed liquid containing ferrous sulfate crystals is guided into the second tank body through the second guide pipe and is centrifuged through the centrifugal assembly in the second tank body, so that solid-liquid separation is realized, the treatment process is simple, required equipment is few, and the equipment capital investment is reduced.
As a further improvement of the above scheme, a stirring assembly is mounted on the first tank body, the stirring assembly includes a first motor and a stirring blade, the first motor is fixed on the top of the first tank body, a first output shaft of the first motor extends into the first tank body and is rotatably connected with the bottom of the first inner cylinder, and the stirring blade is fixed on the first output shaft.
Through setting up above-mentioned technical scheme, at the in-process to pickling spent acid cooling crystallization, open first motor and adjust first motor low-speed rotation, first motor drives the stirring leaf and rotates to the spent acid in the inner tube stirs, in order to keep the even state of spent acid and each composition for crystallization fractionation speed.
As a further improvement of the above scheme, the centrifugal assembly includes a second motor, a fixing rod and a filter screen cylinder, the second motor is fixed to the top of the second tank, the fixing rod is fixed to a second output shaft of the second motor, the filter screen cylinder and the fixing rod are fixed to one end far away from the second output shaft, and the top of the filter screen cylinder is located below the second flow guide pipe.
Through setting up above-mentioned technical scheme, when carrying out solid-liquid separation to the spent acid that contains the ferrous sulfate crystallization, the staff only need open the second motor, drives dead lever and filter screen cylinder through the second motor and rotates for solid-liquid fully separates, and the ferrous sulfate crystallization remains in the filter screen cylinder.
As a further improvement of the above scheme, a third flow guide pipe and a discharge pipe are fixed at the bottom of the second tank body, one end of the third flow guide pipe, which is far away from the bottom of the second tank body, is rotatably connected with the bottom of the filter screen cylinder, and a first plug body which is in plug-in fit with the third flow guide pipe is installed in the third flow guide pipe; and a second plug body in plug-in fit with the discharge pipe is arranged in the discharge pipe.
Through setting up above-mentioned technical scheme, set up third honeycomb duct and discharging pipe at second jar body bottom to discharge the ferrous sulfate crystallization in the filter screen section of thick bamboo, and discharge spent acid from the discharging pipe.
As a further improvement of the scheme, the bottom of the filter screen cylinder is funnel-shaped.
Through setting up above-mentioned technical scheme, filter screen cylinder bottom is the infundibulate to this is convenient for discharge the crystallization of filter screen cylinder bottom.
As a further improvement of the above scheme, an annular expansion water stop is fixed on the outer wall of the third flow guide pipe.
Through setting up above-mentioned technical scheme, be fixed with annular inflation waterstop on the third honeycomb duct outer wall, the inflation waterstop meets water inflation back, can fully fill up the clearance between the third honeycomb duct outer wall and the jar body bottom of second to reinforcing third honeycomb duct and the jar body between the connection leakproofness of second, avoided the spent acid to discharge from the clearance between the third honeycomb duct and the second jar body.
As a further improvement of the scheme, the bottom of the first tank body and the bottom of the inner cylinder are both obliquely arranged.
Through setting up above-mentioned technical scheme, first jar body bottom and inner tube bottom are the slope setting to this is convenient for contain the interior sour leading-in second jar of fully of the waste acid of crystallization in with the inner tube.
The utility model has the advantages that:
1. in the scheme, when the steel pickling waste acid needs to be cracked and regenerated, workers only need to pour the overheated waste acid into the inner cylinder from the first guide pipe, communicate the acid outlet pipe with an external cooling device, and then communicate the acid inlet pipe with a water outlet of the cooling device, so that refrigerating fluid circulation is formed between the outer wall of the inner cylinder and the inner wall of the first tank body, and the overheated pickling waste acid is cooled, so that ferrous sulfate in the pickling waste acid is crystallized and precipitated; after the ferrous sulfate crystals are completely separated out, the electromagnetic valve is opened, so that the solid-liquid mixed liquid containing the ferrous sulfate crystals is guided into the second tank body through the second guide pipe and is centrifuged through the centrifugal assembly in the second tank body, so that solid-liquid separation is realized, the treatment process is simple, the required equipment is less, and the equipment capital investment is reduced;
2. in the scheme, in the process of cooling and crystallizing the pickling waste acid, the first motor is started and is adjusted to rotate at a low speed, the first motor drives the stirring blades to rotate, and the waste acid in the inner cylinder is stirred so as to keep the uniform state of the waste acid and each component and accelerate the crystallization and fractionation speed;
3. in this scheme, be fixed with annular inflation waterstop on the third honeycomb duct outer wall, the inflation waterstop meets water inflation back, can fully fill up the clearance between the third honeycomb duct outer wall and the jar body bottom of second to reinforcing third honeycomb duct and the jar body between the connection leakproofness of second, avoided the spent acid to discharge from the clearance between the third honeycomb duct and the second jar body.
Drawings
Fig. 1 is a schematic view of the overall structure of the device of the present invention.
In the figure: 1. a first tank; 11. a first draft tube; 12. an acid inlet pipe; 13. an acid outlet pipe; 14. a second draft tube; 141. an electromagnetic valve; 15. a first leg; 2. a second tank; 21. a discharge pipe; 22. a third draft tube; 23. a second plug body; 231. an expansion waterstop; 24. a first plug body; 25. a second leg; 3. an inner barrel; 4. a first motor; 41. a first output shaft; 411. stirring blades; 5. a second motor; 51. a second output shaft; 511. fixing the rod; 6. a screen cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, the embodiment discloses a steel pickling waste acid separation and recycling device, which comprises a first tank 1 and a second tank 2. The first jar of body 1 and the second jar of body 2 are cylindricly, and both all are vertical in ground setting. An inner cylinder 3 is fixed in the first tank body 1. The inner cylinder 3 is also cylindrical, the top of the inner cylinder is open, and the bottom of the inner cylinder 3 is fixed with the inner bottom wall of the first tank 1.
The top of the first tank body 1 is fixed with a first draft tube 11. The first flow guide pipe 11 is a cylindrical pipe body, and the bottom of the first flow guide pipe extends into the inner cylinder 3 so as to guide overheated steel pickling waste acid into the inner cylinder 3 for treatment. An acid inlet pipe 12 and an acid outlet pipe 13 are arranged on the side wall of the first tank body 1, and the acid inlet pipe 12 and the acid outlet pipe 13 are both cylindrical pipe bodies. The acid inlet pipe 12 is fixed on the position of the side wall of the first tank body 1 close to the bottom of the first tank body 1, the acid outlet pipe 13 is fixed on the position of the side wall of the first tank body 1 close to the top of the first tank body 1, and both the acid inlet pipe and the acid outlet pipe are communicated with the first tank body 1. The acid outlet pipe 13 is communicated with an external water cooling device through a water pipe, and the acid inlet pipe 12 is communicated with a water outlet of the cooling device so as to pour refrigerating fluid into the first tank body 1, thereby cooling the steel pickling waste acid in the inner tank 3 and crystallizing and separating out ferrous sulfate in the waste acid.
The top of the first tank body 1 is provided with a stirring component. The stirring assembly includes a first motor 4 and a stirring blade 411. The first motor 4 is fixed on the top of the first tank 1, and the first output shaft 41 of the first motor 4 extends into the inner cylinder 3. The stirring blades 411 are provided in plurality and are all fixed on the first output shaft 41. When the steel pickling waste acid is cooled, the worker can adjust the first motor 4 to operate at a low speed, and the first motor 4 drives the stirring blade 411 to stir the waste acid so as to keep the waste acid and each component in a uniform state and accelerate the crystallization and fractionation speed.
The bottom of the first tank body 1 is fixed with a first supporting leg 15 for supporting the first tank body 1. A second draft tube 14 is fixed on the outer wall of the inner cylinder 3 near the bottom of the inner cylinder, and two ends of the second draft tube 14 are respectively communicated with the first tank body 1 and the second tank body 2. The bottom of the first tank body 1 and the bottom of the inner tank body 3 are both obliquely arranged and are both inclined towards one side of the second tank body 2, so that waste acid containing crystals in the inner tank body 3 can be fully led into the second tank body 2. An electromagnetic valve 141 is fixed on the second delivery pipe 14, so that a worker can control the on-off of the second delivery pipe 14 by controlling the on-off of the electromagnetic valve 141.
The bottom of the second tank 2 is fixed with a second leg 25 for supporting the second tank 2, and in this embodiment, the height of the top of the second tank 2 is smaller than the height of the bottom of the first tank 1, so that the waste acid in the inner cylinder 3 can smoothly flow into the second tank 2 by gravity. A filter screen cylinder 6 is arranged in the second tank body 2. The filter screen cylinder 6 is cylindrical, the top of the filter screen cylinder is open, the bottom of the filter screen cylinder is funnel-shaped, and the top of the filter screen cylinder 6 is positioned below the second guide pipe 14, so that waste acid containing crystals is guided into the filter screen cylinder 6 for filtering. The second tank 2 is provided with a centrifugal component. The centrifugal assembly includes a second motor 5, a fixing rod 511, and a screen cylinder 6. The second motor 5 is fixed on the top of the second tank body 2, the second output shaft 51 of the second motor 5 extends into the second tank body 2, the fixing rod 511 is fixed on the outer wall of the second output shaft 51 of the second motor 5, and one end of the fixing rod 511 far away from the second output shaft 51 is fixed with the inner wall of the filter screen cylinder 6. When the waste acid containing crystals needs to be subjected to centrifugal filtration, a worker only needs to start the second motor 5, the second motor 5 drives the second output shaft 51 to rotate after working, the fixing rod 511 rotates synchronously with the second output shaft 51, meanwhile, the fixing rod 511 drives the filter screen cylinder 6 to rotate, and when the second motor 5 runs at a high speed, the waste acid containing crystals in the filter screen cylinder 6 can be centrifuged, so that solid-liquid separation is performed (the crystals are reserved in the filter screen cylinder 6, and the waste acid enters the second tank body 2).
A third guide pipe 22 communicated with the second tank body 2 is fixed on the side wall of the second tank body, and a first plug body 24 in inserting fit with the third guide pipe 22 is installed in the third guide pipe. When the waste acid in the second tank body 2 needs to be discharged, a worker can open the first plug body 24 and collect the waste acid into a designated container for centralized treatment. A discharge pipe 21 is fixed at the bottom of the second tank body 2. The discharge pipe 21 is cylindrical and has an axis coincident with the axis of the screen cylinder 6. One end of the discharge pipe 21 extends into the second tank body 2 and is rotatably connected with the bottom of the filter screen cylinder 6, and the other end is flush with the bottom of the second tank body 2. An expansion water stop 231 is fixed on the outer wall of the discharge pipe 21. The expansion water stop belt 231 is annular and has the performance of expanding when encountering water, and after the expansion water stop belt 231 expands when encountering water, the gap at the joint of the filter screen cylinder 6 and the second tank body 2 can be fully filled, so that waste acid is prevented from flowing out from the gap at the joint of the filter screen cylinder 6 and the second tank body 2. A second plug 23 is arranged in the discharge pipe 21 and is in plug-in fit with the discharge pipe, so that waste acid in the second tank body 2 is prevented from flowing out of the discharge pipe 21. When the centrifugation is finished, the worker first opens the first plug 24 to discharge the waste acid in the second tank 2, and then opens the second plug 23 to discharge the crystals in the screen cylinder 6.
The use principle of the embodiment is as follows: during crystallization, workers only need to communicate the acid outlet pipe 13 with an external water cooling device and communicate the acid inlet pipe 12 with a water outlet of the water cooling device so as to form refrigerating fluid circulation between the inner cylinder 3 and the first tank body 1, and then introduce overheated steel pickling waste acid into the inner cylinder 3 from the first flow guide pipe 11 for cooling crystallization; after the crystallization is completed, the worker only needs to open the electromagnetic valve 141, so that the pickling waste acid containing ferrous sulfate crystals in the inner cylinder 3 is led into the second tank body 2 from the second guide pipe 14, then the second motor 5 is opened, the second motor 5 drives the second output shaft 51 to rotate after working, the fixing rod 511 synchronously rotates along with the second output shaft 51, meanwhile, the fixing rod 511 drives the filter screen cylinder 6 to rotate, when the second motor 5 runs at a high speed, the waste acid containing crystals in the filter screen cylinder 6 can be centrifuged, so that solid-liquid separation is realized, finally, the first plug body 24 is opened to discharge the waste acid, and the second plug body 23 is opened to discharge the crystals.
In the scheme, when the steel pickling waste acid needs to be cracked and regenerated, workers only need to pour the overheated waste acid into the inner cylinder 3 from the first guide pipe 11, communicate the acid outlet pipe 13 with an external cooling device, and then communicate the acid inlet pipe 12 with a water outlet of the cooling device, so that refrigerating fluid circulation is formed between the outer wall of the inner cylinder 3 and the inner wall of the first tank body 1, and the overheated pickling waste acid is cooled, so that ferrous sulfate in the pickling waste acid is crystallized and precipitated; after ferrous sulfate crystals are separated out, the electromagnetic valve 141 is opened, waste acid containing ferrous sulfate crystals is led into the second tank body 2 through the second guide pipe 14 and is centrifuged through the centrifugal assembly in the second tank body 2, so that solid-liquid separation is realized, the treatment process is simple, required equipment is few, and the equipment capital investment is reduced.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A steel pickling waste acid separation and regeneration utilization device, which comprises a first tank body (1) and a second tank body (2), the bottom height of the first tank body (1) is greater than the top height of the second tank body (2), it is characterized in that an acid inlet pipe (12) and an acid outlet pipe (13) which are communicated with the first tank body (1) are fixed on the side wall of the first tank body (1), an inner cylinder (3) is fixed in the first tank body (1), a first guide pipe (11) extending into the inner cylinder (3) is fixed at the top of the first tank body (1), a second draft tube (14) for pouring the solid-liquid mixed liquid in the inner cylinder (3) into the second tank body (2) is fixed at the bottom of the first tank body (1), and the second guide pipe (14) is provided with an electromagnetic valve (141) for controlling the conduction of the second guide pipe, and the second tank body (2) is provided with a centrifugal assembly for separating solid from liquid.
2. The steel pickling waste acid separation and recycling device of claim 1, wherein a stirring assembly is mounted on the first tank (1), the stirring assembly comprises a first motor (4) and a stirring blade (411), the first motor (4) is fixed to the top of the first tank (1), a first output shaft (41) of the first motor (4) extends into the first tank (1) and is rotatably connected with the bottom of the first inner cylinder (3), and the stirring blade (411) is fixed to the first output shaft (41).
3. The steel pickling waste acid separation and recycling device of claim 1, wherein the centrifugal assembly comprises a second motor (5), a fixing rod (511) and a filter screen cylinder (6), the second motor (5) is fixed to the top of the second tank body (2), the fixing rod (511) is fixed to a second output shaft (51) of the second motor (5), the filter screen cylinder (6) and one end, far away from the second output shaft (51), of the fixing rod (511) are fixed, and the top of the filter screen cylinder (6) is located below the second flow guide pipe (14).
4. The steel pickling waste acid separation and recycling device of claim 3, wherein a third guide pipe (22) and a discharge pipe (21) are fixed at the bottom of the second tank body (2), one end, far away from the bottom of the second tank body (2), of the third guide pipe (22) is rotatably connected with the bottom of the filter screen cylinder (6), and a first plug body (24) in plug fit with the third guide pipe (22) is installed in the third guide pipe; and a second plug body (23) which is in plug-in fit with the discharge pipe (21) is arranged in the discharge pipe.
5. The device for separating and recycling waste acid from steel pickling of claim 4, wherein the bottom of the filter screen cylinder (6) is funnel-shaped.
6. The steel pickling waste acid separation and recycling device of claim 4, wherein an annular expansion water stop (231) is fixed on the outer wall of the third flow guide pipe (22).
7. The device for separating and recycling waste acid generated in steel pickling of claim 1, wherein the bottom of the first tank body (1) and the bottom of the inner cylinder (3) are both arranged in an inclined manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921499742.8U CN210596272U (en) | 2019-09-10 | 2019-09-10 | Steel pickling waste acid separation regeneration utilizes device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921499742.8U CN210596272U (en) | 2019-09-10 | 2019-09-10 | Steel pickling waste acid separation regeneration utilizes device |
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| CN210596272U true CN210596272U (en) | 2020-05-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156493A (en) * | 2020-09-21 | 2021-01-01 | 山东民基新材料科技有限公司 | Crystallization centrifuge |
| CN112645355A (en) * | 2020-12-17 | 2021-04-13 | 淮北师范大学 | Method for extracting ammonium thiocyanate from desulfurization waste residues by coking HPF (high pressure fluidized bed) method |
-
2019
- 2019-09-10 CN CN201921499742.8U patent/CN210596272U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156493A (en) * | 2020-09-21 | 2021-01-01 | 山东民基新材料科技有限公司 | Crystallization centrifuge |
| CN112645355A (en) * | 2020-12-17 | 2021-04-13 | 淮北师范大学 | Method for extracting ammonium thiocyanate from desulfurization waste residues by coking HPF (high pressure fluidized bed) method |
| CN112645355B (en) * | 2020-12-17 | 2022-09-02 | 淮北师范大学 | Method for extracting ammonium thiocyanate from desulfurization waste residues by coking HPF (high pressure fluidized bed) method |
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