CN104178774A - Acid liquid temperature control method of stainless steel pickling line - Google Patents
Acid liquid temperature control method of stainless steel pickling line Download PDFInfo
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- CN104178774A CN104178774A CN201410420194.0A CN201410420194A CN104178774A CN 104178774 A CN104178774 A CN 104178774A CN 201410420194 A CN201410420194 A CN 201410420194A CN 104178774 A CN104178774 A CN 104178774A
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- acid
- stainless steel
- acid liquid
- liquor temperature
- acid liquor
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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses an acid liquid temperature control method of a stainless steel pickling line. The acid liquid temperature control method is characterized in that an automatic butterfly valve is opened, a circulation pump is started, an acid liquid is circulated in a circulation loop, meanwhile the temperature sensor starts to detect the temperature of the acid liquid and feeds the detected temperature of the acid liquid back to a programmable controller, the programmable controller controls the opening amount of an adjusting valve according to the detected temperature of the acid liquid, the flow of frozen water is adjusted according to the opening amount of the adjusting valve, and the heat exchange amount of a heat exchanger is adjusted according to the flow of the frozen water, so that the control on the temperature of the acid liquid is achieved.
Description
Technical field
The invention belongs to stainless steel production field, be specifically related to acid-washing stainless steel line acid liquor temperature control method.
Background technology
At present, acid washing process for stainless steel plays vital effect in the production of stainless steel plate, and wherein acid liquor temperature plays an important role again in acid washing process for stainless steel, and acid-washing stainless steel acid liquor temperature regulation system is widely used.Generally in each recycle system, be equipped with a set of for adjusting the humidity control system of acid liquor temperature, for adjusting the temperature of acid solution, make acid solution reach the needed temperature of production technique, but because every stainless steel sulfuric acid refining production line needs the different steel grade of pickling, the required acid liquor temperature of the production technique of different steel grades is also different, wherein a part of steel grade and acid liquid reaction produce a large amount of heats, cause acid liquor temperature too high, by the more difficult control acid liquor temperature of existing humidity control system, be difficult to make acid solution to reach the requirement of required production technique.
Summary of the invention
In order to meet the requirement of various steel grade pickling production technique, the invention provides acid-washing stainless steel line acid solution cooling system.
Technical scheme of the present invention is:
System that can auxiliary adjustment acid-washing stainless steel line acid liquor temperature, it is comprised of automatic butterfly valve, recycle pump, interchanger, variable valve, programmable logic controller; The first automatic butterfly valve, recycle pump, interchanger, the second automatic butterfly valve are arranged on the pipeline of pickle solution circulation loop successively, and the delivery port of interchanger is provided with temperature sensor; Variable valve is arranged on refrigerated water input channel, and the 3rd automatic butterfly valve is installed on refrigerated water water return pipeline.
Acid-washing stainless steel line acid liquor temperature control method, by operator, on programmable logic controller, input " system use " signal, automatic butterfly valve is opened, recycle pump starts, acid solution circulates in circulation loop, simultaneous temperature sensor starts to detect acid liquor temperature, and the acid liquor temperature detecting is fed back to programmable logic controller, programmable logic controller carrys out the open amount of regulating and controlling valve according to the acid liquor temperature detecting, by the open amount of variable valve, regulate the flow of refrigerated water, by regulating the flow of refrigerated water to regulate the heat of interchanger, thereby realize the control to acid liquor temperature.
The present invention and existing acid-washing stainless steel line acid regulation system are used simultaneously, can effectively regulate the temperature of acid solution, make acid liquor temperature can meet the requirement of multiple type of stainless steel pickling production technique.
Accompanying drawing explanation
Fig. 1 is the system diagram of acid-washing stainless steel line acid liquor temperature of the present invention.
Fig. 2 is the pickling system figure of original stainless steel sulfuric acid refining production line.
Fig. 3 is the circuit controlling party block diagram of the pickling system of stainless steel sulfuric acid refining production line of the present invention.
In figure, 1, automatic butterfly valve, 2, recycle pump, 3, interchanger, 4, variable valve, 5, programmable logic controller, 6, acid solution tank, 7, freezing water tank, 8, Hand-operated butterfly valve.
Embodiment
Shown in Fig. 2, the pickling system of original stainless steel sulfuric acid refining production line is that Hand-operated butterfly valve is opened at the bottom of tank, recycle pump starts, acid solution circulates in circulation loop, simultaneous temperature sensor starts to detect acid liquor temperature, and the acid liquor temperature detecting is fed back to programmable logic controller, programmable logic controller carrys out the open amount of regulating and controlling valve according to the acid liquor temperature detecting, by the open amount of variable valve, regulate the flow of refrigerated water, by regulating the flow of refrigerated water to regulate the heat of interchanger, thereby realize the control to acid liquor temperature.
Shown in Fig. 1, Fig. 3, the system of acid-washing stainless steel line acid liquor temperature is comprised of automatic butterfly valve 1, recycle pump 2, interchanger 3, variable valve 4, programmable logic controller 5; The first automatic butterfly valve, recycle pump 2, interchanger 3, the second automatic butterfly valve are arranged on the pipeline of pickle solution circulation loop successively, and the delivery port of interchanger 3 is provided with temperature sensor; Variable valve 4 is arranged on refrigerated water input channel, and the 3rd automatic butterfly valve is installed on refrigerated water water return pipeline.
By operator, on programmable logic controller, input " system use " signal, automatic butterfly valve is opened, recycle pump starts, acid solution circulates in circulation loop, simultaneous temperature sensor starts to detect acid liquor temperature, and the acid liquor temperature detecting is fed back to programmable logic controller, and programmable logic controller carrys out the open amount of regulating and controlling valve according to the acid liquor temperature detecting, and variable valve open amount is by formula μ (t)=0.8[e (t)+20 ∫
t 0e (t) dt] calculate e in formula (t)=r (t)-c (t); R (t) is design temperature, and c (t) is measured temperature, regulates the flow of refrigerated water by the open amount of variable valve, by regulating the flow of refrigerated water to regulate the heat of interchanger, thereby realizes the control to acid liquor temperature.
Design temperature is 30 degree ~ 50 degree.
Claims (2)
1. acid-washing stainless steel line acid liquor temperature Controlling System, is comprised of three automatic butterfly valves, recycle pump, interchanger, variable valve, programmable logic controllers; It is characterized in that the first automatic butterfly valve, recycle pump, interchanger, the second automatic butterfly valve are arranged on the pipeline of pickle solution circulation loop successively, the delivery port of interchanger is provided with temperature sensor; Variable valve is arranged on refrigerated water input channel, and the 3rd automatic butterfly valve is installed on refrigerated water water return pipeline.
2. acid-washing stainless steel line acid liquor temperature control method, it is characterized in that automatic butterfly valve opens, recycle pump starts, acid solution circulates in circulation loop, simultaneous temperature sensor starts to detect acid liquor temperature, and the acid liquor temperature detecting is fed back to programmable logic controller, programmable logic controller carrys out the open amount of regulating and controlling valve according to the acid liquor temperature detecting, by the open amount of variable valve, regulate the flow of refrigerated water, by regulating the flow of refrigerated water to regulate the heat of interchanger, thereby realize the control to acid liquor temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420194.0A CN104178774A (en) | 2014-08-25 | 2014-08-25 | Acid liquid temperature control method of stainless steel pickling line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420194.0A CN104178774A (en) | 2014-08-25 | 2014-08-25 | Acid liquid temperature control method of stainless steel pickling line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104178774A true CN104178774A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410420194.0A Pending CN104178774A (en) | 2014-08-25 | 2014-08-25 | Acid liquid temperature control method of stainless steel pickling line |
Country Status (1)
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| CN (1) | CN104178774A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110825130A (en) * | 2019-10-31 | 2020-02-21 | 中冶陕压重工设备有限公司 | Acid liquor temperature control method for pickling line process section |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5800694A (en) * | 1995-02-15 | 1998-09-01 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Process and plant for pickling materials made of steel, in particular stainless steel |
| CN201162048Y (en) * | 2007-12-18 | 2008-12-10 | 山西太钢不锈钢股份有限公司 | Terminal cleaning apparatus of stainless steel anneal acid washing line |
| CN202688454U (en) * | 2012-07-12 | 2013-01-23 | 武汉钢铁(集团)公司 | Pickling automatic temperature control alarm device |
| CN203546148U (en) * | 2013-10-18 | 2014-04-16 | 湖南湘投金天钛金属有限公司 | On-line temperature control system for acid-pickling solution |
-
2014
- 2014-08-25 CN CN201410420194.0A patent/CN104178774A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5800694A (en) * | 1995-02-15 | 1998-09-01 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Process and plant for pickling materials made of steel, in particular stainless steel |
| CN201162048Y (en) * | 2007-12-18 | 2008-12-10 | 山西太钢不锈钢股份有限公司 | Terminal cleaning apparatus of stainless steel anneal acid washing line |
| CN202688454U (en) * | 2012-07-12 | 2013-01-23 | 武汉钢铁(集团)公司 | Pickling automatic temperature control alarm device |
| CN203546148U (en) * | 2013-10-18 | 2014-04-16 | 湖南湘投金天钛金属有限公司 | On-line temperature control system for acid-pickling solution |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110825130A (en) * | 2019-10-31 | 2020-02-21 | 中冶陕压重工设备有限公司 | Acid liquor temperature control method for pickling line process section |
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Application publication date: 20141203 |
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| RJ01 | Rejection of invention patent application after publication |