CN101519784B - Heating method of silicon-steel pickling line and device thereof - Google Patents
Heating method of silicon-steel pickling line and device thereof Download PDFInfo
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- CN101519784B CN101519784B CN2008100339284A CN200810033928A CN101519784B CN 101519784 B CN101519784 B CN 101519784B CN 2008100339284 A CN2008100339284 A CN 2008100339284A CN 200810033928 A CN200810033928 A CN 200810033928A CN 101519784 B CN101519784 B CN 101519784B
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Abstract
The invention relates to a method of silicon-steel pickling and a device thereof. The method comprises the steps of: firstly washing and heating, namely, in a circulation tank, jetting hot water to silicon-steel strip steel which passes through the circulation tank so as to heat the silicon-steel strip steel to the temperature of 80 to 95 DEG C; and secondly, putting the preheated silicon-steel strip steel in a pickling bath for reaction so as to remove the surface iron scale, jetting the silicon-steel strip steel by heated pickling solution in the pickling bath, and simultaneously controlling the temperature of the pickling solution to be 75 to 85 DEG C. The invention overcomes the problems that the heat exchange efficiency of a capillary heat interchanger is low, the obstruction of a system is generated caused by silicon ooze, and the like; besides, the invention effectively solves the technical problems that the acid consumption of a deep slot immersion type pickling line is high and the speed thereof is slow as well as a graphite heater of the system is obstructed by silicon ooze in a shallow tank turbulence technology, which causes the problems that the flow capacity of acid liquor is reduced, the temperature is fallen, and the normal production can not be met unless washing by disassembling or separating; and a large amount of manpower, physical resources and time are reduced, and the production efficiency is improved.
Description
Technical field
The present invention relates to the pickling technology, particularly a kind of silicon-steel pickling method and device thereof.
Background technology
At present, what silicon-steel pickling lines more both domestic and external adopted is deep trouth immerseable, shallow slot turbulent flow type acid cleaning process, and corresponding type of heating is in the dark acid tank capillary heaters to be set, and graphite heater is set on the pipeline finishes heating to cold belt steel and acid solution.
As shown in Figure 1, it is present deep trouth immerseable pickling line heating means synoptic diagram, and it comprises acid jar 10, sour pump 20, acid tank 30, capillary heaters 40, squeezing roller 50 and corresponding valve 60.Capillary heaters 40 is arranged in the acid tank 30, the squeezing roller 50 symmetric upper and lower surfaces that are arranged on band steel 70.
There is following deficiency in above-mentioned heating means in actual production:
The heat that deep trouth immerseable pickling line consumes is many, and the heat exchange efficiency of capillary heaters itself itself is just not high, and many group well heaters are set in acid tank for this reason; Deep trouth immerseable pickling line acid consumption is high in addition, speed is slow, the developing direction that incompatible pickling now is low to the acid consumption, speed is fast, energy consumption is low.
Referring to Fig. 2, it is present shallow slot turbulent flow heating method of silicon-steel pickling line synoptic diagram, and it comprises acid jar 10, sour pump 20, graphite heater 80, acid tank 30, nozzle 90, squeezing roller 50 and corresponding valve 60.Nozzle 90 is arranged on the upper surface of band steel 70, the squeezing roller 60 symmetric upper and lower surfaces that are arranged on band steel 70, and nozzle 90 has a certain degree with band steel 70 shapes.Acid solution realizes heating by graphite heater 80 time.
There is following deficiency in above heating means in actual production:
Shallow slot turbulent flow technology has satisfied the developing direction that present pickling is low to the acid consumption, speed is fast, energy consumption is low.But because insufficient to the chemical property of silicon mud understanding, cause the silicon mud fouling in system in the acid solution, stop up graphite heater, the system acid solution of causing can't normal heating, causes often shutting down handling.
Concrete manifestation is as follows:
1. be the cold belt steel owing to what enter acid tank, need considerable heat be heated design temperature, therefore the graphite heater heat interchanging area that needs is big, costs an arm and a leg.
2. graphite heater is the piece pore structure, and the silicon mud that produces in the acid cleaning process very easily forms fouling in the hole, results in blockage, and circulation area reduces, and resistance increases, and acid solution flow, temperature reduce, and can't satisfy ordinary production.
3. because silicon mud constantly produces in acid cleaning process, in system, add up gradually, especially stop up graphite heater, must often disintegrate, take apart and clean.
Summary of the invention
The objective of the invention is to design a kind of silicon-steel pickling method and device thereof, it is not high to overcome kapillary interchanger heat exchange efficiency, and silicon mud is to the problems such as obstruction that system produces, and solves effectively that deep trouth immerseable pickling line acid consumption is high, speed is slow; Silicon mud block system graphite heater causes acid solution flow, temperature to reduce in the shallow slot turbulent flow technology, can't satisfy ordinary production, must often disintegrate, take apart and technical barrier such as clean; Saved great amount of manpower, material resources and time, enhanced productivity.
For achieving the above object, technical scheme of the present invention is,
A kind of silicon-steel pickling method, at first flushing heating to the band steel winding-up hot water through circulation groove, is heated the silicon strip steel in a circulation groove, is heated to 80～95 ℃; Then, the silicon strip steel after the preheating enters pickling tank and reacts, and removes the iron scale on surface, and the pickle solution that is heated by process in the pickling tank is to the winding-up of silicon strip steel, and simultaneously, the temperature of acid solution is controlled at 75～85 ℃.
The heating unit that described flushing adds thermal recovery is plate heater or tubular heater, as the coiler-type well heater.
Described pickling heating installation is the kapillary polytetrafluoroethylheater heater.
A kind of silicon-steel pickling device comprises, circulation groove is established the nozzle to silicon strip steel winding-up hot water in it; Heating water tank is established heating unit in it, and is communicated with the circulation groove nozzle by water pipe, and forms a circulation line, also establishes strainer, recycle pump and control valve in its pipeline; Pickling tank is established the nozzle to silicon strip steel winding-up pickle solution in it; The pickle solution case is established heating installation in it, and is communicated with the pickling tank nozzle by pipeline, and forms a circulation line, also establishes recycle pump and control valve in its pipeline; Squeezing roller is arranged at gangway end in circulation groove, the pickling tank respectively.
Heating unit in the described heating water tank is coiler-type well heater or plate heater or tubular heater.
Heating installation in the described pickle solution case is the kapillary polytetrafluoroethylheater heater.
Described circulation groove inner nozzle and squeezing roller become the symmetric upper and lower surface that is arranged on the silicon strip steel.
Beneficial effect of the present invention
The present invention is by divided silicon steel band steel heating and pickling heating, efficiently solves deep trouth immerseable pickling line acid consumption height, speed is slow; Solved that silicon mud block system graphite heater causes acid solution flow, temperature to reduce in the shallow slot turbulent flow technology, can't satisfy ordinary production, must often disintegrate, take apart and technical barrier such as clean.Saved great amount of manpower, material resources and time, enhanced productivity.
Description of drawings
Fig. 1 is deep trouth immerseable pickling line heating means synoptic diagram;
Fig. 2 is a shallow slot turbulent flow heating method of silicon-steel pickling line synoptic diagram;
Fig. 3 is heating method of silicon-steel pickling line of the present invention and schematic representation of apparatus thereof.
Embodiment
Referring to Fig. 3, silicon-steel pickling device of the present invention comprises, circulation groove 1 is established the nozzle 2 to silicon strip steel 18 winding-up hot water in it; Heating water tank 3 is established heating unit 4 in it, and is communicated with circulation groove nozzle 2 by water pipe 5, and forms a circulation line, also establishes strainer 6, recycle pump 7 and control valve 8 in its pipeline; Pickling tank 9 is established the nozzle 11 to band steel winding-up pickle solution in it; Pickle solution case 12 is established heating installation 13 in it, and is communicated with pickling tank nozzle 11 by pipeline 14, and forms a circulation line, also establishes recycle pump 15 and control valve 16 in its pipeline; Squeezing roller 17,17 ' is arranged at gangway end in circulation groove 1, the pickling tank 9 respectively.
Described heating unit 4 is plate heater or tubular heater, as the coiler-type well heater; Described pickling heating installation 13 is the kapillary polytetrafluoroethylheater heater.
Described circulation groove inner nozzle 2,11 and squeezing roller 17,17 ' become the symmetric upper and lower surface that is arranged on silicon strip steel 18.
Silicon-steel pickling method of the present invention, at first flushing heating to the silicon strip steel 18 winding-up hot water through circulation groove, is heated silicon strip steel 18 in a circulation groove 1, is heated to 80～95 ℃; Then, the silicon strip steel 18 after the preheating enters pickling tank 9 and reacts, and removes the iron scale on surface, and the pickle solution that is heated by process in the pickling tank 9 is to 18 winding-ups of silicon strip steel, and simultaneously, the temperature of acid solution is controlled at 75～85 ℃.
Use steam that water is heated to 95 ℃ of design temperatures in the circulation groove 1; By flow 150m
3/ h, the work of lift 30m recycle pump 7 is ejected into silicon strip steel 18 surfaces with high-temperature water, and flushing and the silicon strip steel 18 finished silicon strip steel 18 surfaces itself heat, and silicon strip steel 18 are heated to 85 ℃, constantly the heat of replenishment system consumption.
Described squeezing roller 17 ' the symmetric upper and lower surface that is arranged on silicon strip steel 18 is extracted the acid solution on silicon strip steel 18 surfaces.
Described pickling liquid bath 12 is provided with alkali lye interface 121, and it is on the top of pickling liquid bath 12.When needs clean system, emptying pickle solution case 12 injects a certain amount of water, adds a certain amount of alkali lye by alkali lye interface 121 and is made into suitable concentration, work by pickle solution case 12 makes alkali lye in systemic circulation, realizes the cleaning that system device is tied silicon mud.
In sum, the present invention efficiently solves deep trouth immerseable pickling line acid consumption height, speed is slow; Silicon mud block system graphite heater causes acid solution flow, temperature to reduce in the shallow slot turbulent flow technology, can't satisfy ordinary production, must often disintegrate, take apart and technical barrier such as clean.Saved great amount of manpower, material resources and time, enhanced productivity.
Claims (9)
1. a silicon strip steel acid washing method at first washes heating, to the silicon strip steel winding-up hot water through circulation groove, the silicon strip steel is heated in a circulation groove, is heated to 80～95 ℃; Then, the silicon strip steel after the preheating enters pickling tank and reacts, and removes the iron scale on surface, and the pickle solution that is heated by process in the pickling tank is to the winding-up of silicon strip steel, and simultaneously, the temperature of acid solution is controlled at 75～85 ℃.
2. silicon strip steel acid washing method as claimed in claim 1 is characterized in that, the heating unit that described flushing adds thermal recovery is plate heater or tubular heater.
3. silicon strip steel acid washing method as claimed in claim 2 is characterized in that described tubular heater is the coiler-type well heater.
4. silicon strip steel acid washing method as claimed in claim 1 is characterized in that described pickling heating installation is the kapillary polytetrafluoroethylheater heater.
5. a silicon strip steel pickler is characterized in that, comprise,
Circulation groove is established the nozzle to silicon strip steel winding-up hot water in it;
Heating water tank is established heating unit in it, and is communicated with the circulation groove nozzle by water pipe, and forms a circulation line, also establishes strainer, recycle pump and control valve in its pipeline;
Pickling tank is established the nozzle to silicon strip steel winding-up pickle solution in it;
The pickle solution case is established heating installation in it, and is communicated with the pickling tank nozzle by pipeline, and forms a circulation line, also establishes recycle pump and control valve in its pipeline;
Squeezing roller is arranged at gangway end in circulation groove, the pickling tank respectively.
6. silicon strip steel pickler as claimed in claim 5 is characterized in that, the heating unit in the described heating water tank is plate heater or tubular heater.
7. silicon strip steel pickler as claimed in claim 6 is characterized in that described tubular heater is the coiler-type well heater.
8. silicon strip steel pickler as claimed in claim 5 is characterized in that, the heating installation in the described pickle solution case is the kapillary polytetrafluoroethylheater heater.
9. silicon strip steel pickler as claimed in claim 5 is characterized in that described circulation groove inner nozzle and squeezing roller become the symmetric upper and lower surface that is arranged on the silicon strip steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100339284A CN101519784B (en) | 2008-02-26 | 2008-02-26 | Heating method of silicon-steel pickling line and device thereof |
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| CN2008100339284A CN101519784B (en) | 2008-02-26 | 2008-02-26 | Heating method of silicon-steel pickling line and device thereof |
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| CN101519784A CN101519784A (en) | 2009-09-02 |
| CN101519784B true CN101519784B (en) | 2011-03-30 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102220594A (en) * | 2011-05-31 | 2011-10-19 | 马鞍山钢铁股份有限公司 | Method for pickling hot rolled steel strip by resistance heating and its apparatus |
| CN102220595A (en) * | 2011-05-31 | 2011-10-19 | 马鞍山钢铁股份有限公司 | Induction heating method and device for acid washing of hot rolled steel strip |
| CN102206831A (en) * | 2011-05-31 | 2011-10-05 | 马鞍山钢铁股份有限公司 | High-temperature gas heating method and device for pickling hot rolled steel strip |
| CN104789973A (en) * | 2015-04-15 | 2015-07-22 | 太原钢铁(集团)有限公司 | Strong turbulence flow acid cleaning method |
| CN106011902A (en) * | 2016-07-06 | 2016-10-12 | 湖北大帆金属制品有限公司 | Pickling tank |
| CN107201527A (en) * | 2017-06-07 | 2017-09-26 | 浙江康盛股份有限公司 | A kind of hydrochloric acid pickler mode of heating |
| WO2019122979A1 (en) * | 2017-12-21 | 2019-06-27 | Arcelormittal | Method for pickling steel sheets |
| CN110468426B (en) * | 2019-09-19 | 2020-06-30 | 哈尔滨共乐电力科技发展有限公司 | Pickling equipment of transformer silicon alloy steel |
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