CN221141522U - Circulating liquid purifying system of continuous production strip steel production line - Google Patents
Circulating liquid purifying system of continuous production strip steel production line Download PDFInfo
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- CN221141522U CN221141522U CN202322967482.5U CN202322967482U CN221141522U CN 221141522 U CN221141522 U CN 221141522U CN 202322967482 U CN202322967482 U CN 202322967482U CN 221141522 U CN221141522 U CN 221141522U
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- storage tank
- alkali liquor
- pipeline
- alkali
- pipe
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- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 238000010924 continuous production Methods 0.000 title claims abstract description 12
- 239000003513 alkali Substances 0.000 claims abstract description 120
- 238000003860 storage Methods 0.000 claims abstract description 79
- 239000002699 waste material Substances 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 16
- 238000012432 intermediate storage Methods 0.000 claims abstract description 12
- 238000000746 purification Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 13
- 239000010802 sludge Substances 0.000 abstract description 5
- 239000004519 grease Substances 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 25
- 238000005374 membrane filtration Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 239000012670 alkaline solution Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000001471 micro-filtration Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The circulating liquid purifying system for continuous production strip steel production line has alkali liquid input pipe connected to horizontal magnetic filter connected via pipeline to alkali liquid storing tank, butterfly centrifuge connected via pipeline to the alkali liquid storing tank, and first pump installed to the pipeline between the butterfly centrifuge and the alkali liquid storing tank and connected via pipeline to the middle storing tank; the middle storage tank is connected with the tubular membrane filter through a pipeline, a second pump is arranged on the pipeline between the middle storage tank and the tubular membrane filter, the tubular membrane filter and the butterfly centrifuge are connected with the waste oil storage tank through pipelines, and the bottom of the waste oil storage tank is connected with a waste oil storage tank emptying pipe; the alkali liquor storage tank and the intermediate storage tank are respectively connected with the first return line alkali liquor pipe and the second return line alkali liquor pipe. The utility model can discharge iron powder, grease, sludge and the like in the circulating alkali liquor out of the circulating alkali liquor system rapidly and efficiently, ensures that the impurity content in the alkali liquor meets the production requirement of a production line, greatly reduces the discharge amount of the circulating alkali liquor and saves the cost.
Description
Technical Field
The utility model relates to the technical field of strip steel production.
Background
In the production line processes of galvanization/tinning/continuous annealing and the like, the cleaning section of the general plate and strip treatment line adopts processes of alkali liquor soaking and brushing, electrolytic cleaning, hot water brushing and the like to clean the surface of the steel plate, and is an important process of the plate and strip treatment line. If the surface of the steel plate is not cleaned and directly enters an annealing furnace, the nitrogen-hydrogen protective gas atmosphere in the furnace is affected; solid particles remained on the surface of the plate belt are stuck to the furnace roller to accumulate, so that the furnace roller is nodulated, and the nodulated furnace roller can imprint and scratch the lower surface of the strip steel, thereby causing various quality defects.
The existing band steel production line alkali liquor purifying system has low discharging efficiency and poor effect of purifying iron powder, grease, sludge and the like in the circulating alkali liquor, and the circulating alkali liquor needs to be replaced every month, so that time and labor are wasted, and the cost is increased.
Disclosure of utility model
In order to solve the problems of the prior band steel production line alkali liquor purification system and the purification circulating alkali liquor purification system, the utility model provides a continuous production band steel production line circulating liquor purification system.
The technical scheme adopted by the utility model for achieving the purpose is as follows: the circulating liquid purifying system of the continuous production strip steel production line is characterized in that an alkali liquid input pipe 21 is connected with a horizontal magnetic filter 1, the bottom of the horizontal magnetic filter 1 is connected with an alkali liquid emptying pipe, the horizontal magnetic filter 1 is connected with a sewage pipeline, the horizontal magnetic filter 1 is connected with an alkali liquid storage tank 4 through a pipeline, the bottom of the alkali liquid storage tank 4 is connected with an alkali liquid emptying pipe 23 of the alkali liquid storage tank, the alkali liquid storage tank 4 is connected with a butterfly centrifuge 9 through a pipeline, a first pump 7 is arranged on a pipeline between the butterfly centrifuge 9 and the alkali liquid storage tank 4, the butterfly centrifuge 9 is connected with a middle storage tank 10 through a pipeline, and the bottom of the middle storage tank 10 is connected with an alkali liquid emptying pipe 22 of the middle storage tank; the middle storage tank 10 is connected with the tubular membrane filter 15 through a pipeline, a second pump 13 is arranged on the pipeline between the middle storage tank 10 and the tubular membrane filter 15, the tubular membrane filter 15 and the butterfly centrifuge 9 are connected with the waste oil storage tank 16 through pipelines, and the bottom of the waste oil storage tank 16 is connected with the waste oil storage tank emptying pipe 20; the lye storage tank 4 and the intermediate storage tank 10 are respectively connected with a first return line lye pipe 18 and a second return line lye pipe 19.
The sewage discharge pipeline of the horizontal magnetic filter 1 is connected with a waste skip collecting barrel 2.
A first valve 6 and a second valve 8 are respectively arranged on two sides of the first pump 7 on a pipeline between the butterfly centrifuge 9 and the alkali liquor storage tank 4; and a third valve 12 and a fourth valve 14 are respectively arranged on two sides of the second pump 13 on a pipeline between the intermediate storage tank 10 and the tubular membrane filter 15.
The alkali liquor emptying pipe of the horizontal magnetic filter 1 is provided with a horizontal magnetic filter alkali liquor emptying valve 3, the alkali liquor storage tank alkali liquor emptying pipe 23 is provided with an alkali liquor storage tank alkali liquor emptying valve 5, and the middle storage tank alkali liquor emptying pipe 22 is provided with a middle storage tank alkali liquor emptying valve 11.
The circulating liquid purifying system of the continuous production strip steel production line can discharge iron powder, grease, sludge and the like in the circulating alkali liquid out of the circulating alkali liquid system rapidly and efficiently, ensure that the impurity content in the alkali liquid meets the production requirement of the production line, greatly reduce the discharge amount of the circulating alkali liquid and save the cost.
Drawings
FIG. 1 is a schematic diagram of a circulating liquid purifying system of a continuous production strip steel production line according to the utility model.
In the figure: 1. horizontal magnetic filter 2, garbage truck gathers bucket, 3, the lye drain valve, 4, the lye storage tank, 5, lye storage tank lye drain valve, 6, first valve, 7, first pump, 8, the second valve, 9, butterfly centrifuge, 10, intermediate storage tank, 11, intermediate storage tank lye drain valve, 12, third valve, 13, the second pump, 14, fourth valve, 15, tubular membrane filter, 16, waste oil storage tank, 17, waste oil storage tank drain valve, 18, first return line lye pipe, 19, second return line lye pipe, 20, waste oil storage tank drain pipe, 21, lye input pipe, 22, intermediate storage tank lye drain pipe, 23, lye storage tank lye drain pipe.
Detailed Description
The circulating liquid purifying system of the continuous production strip steel production line is shown in figure 1, and the circulating liquid purifying system of the cleaning section consists of three parts, namely primary coarse filtration, secondary fine filtration and tertiary membrane filtration.
Primary coarse filtration:
Horizontal magnetic filter 1: adopt the bar magnet filter to filter the circulation alkali lye after the use, filter iron powder and fatlute are adsorbed on the bar magnet surface, in discharging iron powder fatlute to waste wagon collecting vessel 2 under motor reducer's drive, in the alkali lye after the filtration enters into alkali lye storage tank 4, impurity content in the alkali lye after the filtration: iron powder content: less than 100mg/L, content of impurity oil: less than 1500mg/L; waste skip collecting vessel 2: collecting the iron powder and the oil sludge discharged by the filtering of the horizontal magnetic filter 1; alkali liquor evacuation valve 3 of magnetic filter: the alkali liquor in the magnetic horizontal filter 1 is emptied, so that maintenance personnel can maintain equipment conveniently; alkali liquor storage tank 4: and (3) storing the alkali liquor after the primary coarse filtration of the horizontal magnetic filter 1, and refluxing the clean alkali liquor to the alkali liquor storage tank of the production line for reuse through an overflow port at the upper part of the alkali liquor storage tank 4, wherein the alkali liquor in the middle provides alkali liquor for subsequent filtration. An alkali liquor evacuation valve 5 of the alkali liquor storage tank: and the alkali liquor in the alkali liquor storage tank 4 is emptied, so that maintenance personnel can maintain equipment conveniently.
Secondary fine filtration:
And (3) a valve: when the first pump 7 is overhauled, the first valve 6 and the second valve 8 are required to be closed, so that the alkali liquor is ensured not to overflow; the first pump 7 pumps the alkali liquor which is coarsely filtered in the alkali liquor storage tank 4 into the butterfly centrifuge 9 for secondary fine filtration; butterfly centrifuge 9: the first pump 7 pumps the alkaline solution in the alkaline solution storage tank 4 into the butterfly centrifugal machine 9 for secondary fine filtration, the filtered waste oil mud is discharged into the waste oil storage tank 16, and the impurity content in the alkaline solution after filtration is as follows: iron powder content: less than 50mg/L, impurity oil content: < 500mg/L intermediate tank: and (3) storing the alkali liquor subjected to secondary filtration by the butterfly centrifugal machine 9, and refluxing the clean alkali liquor to the alkali liquor storage tank of the production line for reuse through an overflow port at the upper part of the middle storage tank 10, wherein the alkali liquor at the middle part provides alkali liquor for subsequent membrane filtration. Lye evacuation valve 11 of intermediate tank: the alkali liquor in the intermediate storage tank 10 is emptied, so that maintenance personnel can maintain equipment conveniently.
Three-stage membrane filtration:
And (3) a valve: when the second pump 13 is overhauled, the third valve 12 and the fourth valve 14 are required to be closed, so that the alkali liquor is ensured not to overflow; the second pump 13 pumps the alkaline solution subjected to the secondary fine filtration in the intermediate storage tank 10 into a micro-filtration system for tertiary micro-filtration; tubular membrane filter 15: the second pump 13 pumps the alkali liquor in the intermediate storage tank 10 into the tubular membrane filter for 15-stage membrane filtration, the filtered alkali liquor returns to the alkali liquor storage tank of the production line for continuous recycling, and the membrane filtration system filters the impurity content in the alkali liquor: iron powder content: less than 20mg/L, impurity oil content: < 200mg/L waste oil tank 16: iron powder and oil sludge filtered by the butterfly centrifugal machine 9 and the membrane filtering system are stored in the waste oil storage tank 16, and the waste oil storage tank emptying valve 17 is used for emptying waste oil in the waste oil storage tank 16, so that maintenance personnel can maintain equipment conveniently, or waste oil in the waste oil storage tank 16 is discharged and cleaned regularly.
The cleaning section circulating liquid purifying system sends the dirty alkali liquid after the cleaning section is used into a horizontal magnetic filter for coarse filtration in a self-refluxing or pumping mode. The filtered alkali liquor enters the alkali liquor storage tank, clean alkali liquor flows back to the alkali liquor storage tank of the production line through an overflow port at the upper part of the alkali liquor storage tank for reuse, the alkali liquor at the middle part of the alkali liquor storage tank provides alkali liquor for subsequent filtration, and the crude filtration can filter most of impurities in the alkali liquor, and the impurity content in the alkali liquor after filtration: iron powder content: less than 100mg/L, content of impurity oil: < 1500mg/L.
The centrifugal filtration technology is used for removing large particle impurities and esters remained in the alkali liquor after filtration by the magnetic filter. The centrifugal separation technology mainly comprises a liquid supply pump, a disc separator and an intermediate storage tank. The liquid supply pump extracts alkali liquor from the alkali liquor storage tank at the outlet of the magnetic filter, and conveys the alkali liquor into the disc centrifuge for filtering, the filtered alkali liquor directly flows back to the middle storage tank, clean alkali liquor flows back to the alkali liquor storage tank of the production line for reuse through an overflow port at the upper part of the middle storage tank, and the alkali liquor at the middle part of the middle storage tank provides alkali liquor for the subsequent membrane filtration. The separated soaps and esters are discharged into a waste oil storage tank for unified treatment, and the content of impurities in the alkali liquor is filtered by a centrifugal system: iron powder content: less than 50mg/L, impurity oil content: < 500mg/L.
The membrane filtration technology is used for removing tiny particle impurities and esters remained in the alkali liquor after filtration by a magnetic filter or a disc centrifuge. The membrane filtration technology mainly comprises a liquid supply pump and a tubular membrane filter. The liquid supply pump extracts alkali liquor from the alkali liquor storage tank at the outlet of the magnetic filter, and conveys the alkali liquor into the disc centrifuge for filtering, the filtered alkali liquor directly flows back to the middle storage tank, the separated tiny particle soaps and esters are discharged into the waste oil storage tank for uniform treatment, and the impurity content in the alkali liquor is after membrane filtration: iron powder content: less than 20mg/L, impurity oil content: < 200mg/L.
The cleaning section circulating liquid purifying system is used for continuously purifying the dirty alkali liquid returned by the cleaning tank all the time, and clean alkali liquid returned by the cleaning tank after three times of continuous filtration is discharged into the alkali liquid storage tank of the production line again for continuous recycling.
Claims (4)
1. A continuous production belted steel product line circulation liquid clean system, its characterized in that: the alkali liquor input pipe (21) is connected with the horizontal magnetic filter (1), the bottom of the horizontal magnetic filter (1) is connected with the alkali liquor emptying pipe, the horizontal magnetic filter (1) is connected with the sewage pipeline, the horizontal magnetic filter (1) is connected with the alkali liquor storage tank (4) through a pipeline, the bottom of the alkali liquor storage tank (4) is connected with the alkali liquor emptying pipe (23), the alkali liquor storage tank (4) is connected with the butterfly type centrifugal machine (9) through a pipeline, a first pump (7) is arranged on a pipeline between the butterfly type centrifugal machine (9) and the alkali liquor storage tank (4), the butterfly type centrifugal machine (9) is connected with the middle storage tank (10) through a pipeline, and the bottom of the middle storage tank (10) is connected with the alkali liquor emptying pipe (22) of the middle storage tank; the middle storage tank (10) is connected with the tubular membrane filter (15) through a pipeline, a second pump (13) is arranged on the pipeline between the middle storage tank (10) and the tubular membrane filter (15), the tubular membrane filter (15) and the butterfly centrifuge (9) are connected with the waste oil storage tank (16) through a pipeline, and the bottom of the waste oil storage tank (16) is connected with the waste oil storage tank emptying pipe (20); the alkali liquor storage tank (4) and the intermediate storage tank (10) are respectively connected with a first return line alkali liquor pipe (18) and a second return line alkali liquor pipe (19).
2. The continuous production strip production line circulating liquid purification system of claim 1, wherein: the sewage discharge pipeline of the horizontal magnetic filter (1) is connected with the waste skip collecting barrel (2).
3. The continuous production strip production line circulating liquid purification system of claim 1, wherein: a first valve (6) and a second valve (8) are respectively arranged on two sides of the first pump (7) on a pipeline between the butterfly centrifuge (9) and the alkali liquor storage tank (4); and a third valve (12) and a fourth valve (14) are respectively arranged on two sides of the second pump (13) on a pipeline between the intermediate storage tank (10) and the tubular membrane filter (15).
4. The continuous production strip production line circulating liquid purification system of claim 1, wherein: the alkali liquor emptying pipe of the horizontal magnetic filter (1) is provided with a horizontal magnetic filter alkali liquor emptying valve (3), the alkali liquor storage tank alkali liquor emptying pipe (23) is provided with an alkali liquor storage tank alkali liquor emptying valve (5), and the middle storage tank alkali liquor emptying pipe (22) is provided with a middle storage tank alkali liquor emptying valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322967482.5U CN221141522U (en) | 2023-11-03 | 2023-11-03 | Circulating liquid purifying system of continuous production strip steel production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322967482.5U CN221141522U (en) | 2023-11-03 | 2023-11-03 | Circulating liquid purifying system of continuous production strip steel production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221141522U true CN221141522U (en) | 2024-06-14 |
Family
ID=91425827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322967482.5U Active CN221141522U (en) | 2023-11-03 | 2023-11-03 | Circulating liquid purifying system of continuous production strip steel production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221141522U (en) |
-
2023
- 2023-11-03 CN CN202322967482.5U patent/CN221141522U/en active Active
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