CN214168148U - Strip steel pickling system - Google Patents
Strip steel pickling system Download PDFInfo
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- CN214168148U CN214168148U CN202022699604.3U CN202022699604U CN214168148U CN 214168148 U CN214168148 U CN 214168148U CN 202022699604 U CN202022699604 U CN 202022699604U CN 214168148 U CN214168148 U CN 214168148U
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- dephosphorization
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Abstract
The utility model relates to a belted steel pickling system, including the acid dip pickle, in dephosphorization mechanism has been arranged to the belted steel entrance side of acid dip pickle, dephosphorization mechanism includes broken phosphorus unit and high pressure water dephosphorization unit, high pressure water dephosphorization unit include a plurality of dephosphorization nozzles and to each the supply channel that the dephosphorization nozzle supplied water, in the heat exchanger has been arranged on the supply channel, the heat exchanger disposes high temperature heat transfer medium pipe. The utility model provides a belted steel pickling system heats the water of descaling through the configuration heat exchanger, what also respectively descaling the nozzle sprays is high temperature hot water, when descaling the belted steel, can heat the belted steel for belted steel gets into pickling device's temperature risees, can effectively improve the pickling effect, can reduce the operating temperature of pickle, reduces the consumption that volatilizees of pickle.
Description
Technical Field
The utility model relates to a belted steel pickling system.
Background
Before rolling or galvanizing hot rolled strip steel, the scale on the surface of the strip steel needs to be removed, and the most common method for removing the scale is to remove the scale by acid corrosion, which is called strip steel pickling, but the following problems exist in the pickling process:
(1) in order to accelerate the pickling process, acid needs to be heated, and because the acid liquid is difficult to be directly heated by open fire or electricity due to the characteristics of the acid liquid, steam or high-temperature heat conduction oil can be generated only by heating a boiler through natural gas or coal gas, and the acid is heated by heat exchange of the media in a heat exchanger, so that the heating efficiency is low, the energy waste is caused, and the environmental pollution is also caused;
(2) hydrochloric acid used for strip steel acid washing is volatile at a high temperature, a large amount of acid mist needs to be treated in order to protect the environment, so that the production cost is increased, and meanwhile, the condition that the acid mist cannot be completely treated possibly exists, so that the environment pollution is caused;
(3) when the strip steel just enters the acid bath, the surface temperature of the strip steel is generally normal temperature and is only 25 ℃, while the time of the strip steel in the acid bath is usually only dozens of seconds, the time is short, and the surface temperature of the strip steel is difficult to reach the ideal acid washing temperature in a short time, so the acid washing effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a belted steel pickling system can solve prior art's partial defect at least.
The utility model relates to a belted steel pickling system, including the acid dip pickle, in dephosphorization mechanism has been arranged to the belted steel entrance side of acid dip pickle, dephosphorization mechanism includes broken phosphorus unit and high pressure water dephosphorization unit, high pressure water dephosphorization unit include a plurality of dephosphorization nozzles and to each the supply channel that the dephosphorization nozzle supplied water, in the heat exchanger has been arranged on the supply channel, the heat exchanger disposes high temperature heat transfer medium pipe.
As one embodiment, the high-temperature heat exchange medium pipe is connected with a smoke exhaust pipe of the annealing furnace, or the high-temperature heat exchange medium pipe is connected with a smoke exhaust pipe of the heating furnace.
As one embodiment, each dephosphorization nozzle is distributed to form a plurality of groups of spraying structures which are sequentially arranged along the running direction of the strip steel, each group of spraying structures comprises two spraying groups which are distributed at the upper side and the lower side of a running channel of the strip steel, and each spraying group comprises a plurality of dephosphorization nozzles which are sequentially arranged along the width direction of the strip steel.
In one embodiment, each spray group above the strip steel operation channel is supplied with water through a first water supply pipe, each spray group below the strip steel operation channel is supplied with water through a second water supply pipe, and the first water supply pipe and the second water supply pipe are respectively provided with a regulating valve and a heat exchanger.
As one embodiment, the high-pressure water dephosphorization unit further comprises a dephosphorization chamber, the dephosphorization chamber is provided with a first strip steel inlet and a first strip steel outlet, and each dephosphorization nozzle is uniformly arranged in the dephosphorization chamber.
As one embodiment, the heat exchanger is arranged on the top of the dephosphorization chamber.
In one embodiment, a front tension roller set is arranged on the inlet side of the strip steel of the phosphorus breaking unit, and a rear tension roller set is arranged between the phosphorus breaking unit and the high-pressure water phosphorus removal unit.
In one embodiment, at least some of the front tension roller group and the rear tension roller group are heating rollers capable of heating the strip steel.
As one embodiment, at least a part of the heating roller is an electromagnetic heating roller.
As one embodiment, the phosphorus breaking unit comprises a phosphorus breaking chamber and a phosphorus breaking machine arranged in the phosphorus breaking chamber, wherein a second strip steel inlet, a second strip steel outlet and a dust extraction pipe are arranged on the phosphorus breaking chamber.
The utility model discloses following beneficial effect has at least:
the utility model provides a belted steel pickling system heats the water of descaling through the configuration heat exchanger, what also respectively descaling the nozzle sprays is high temperature hot water, when descaling the belted steel, can heat the belted steel for belted steel gets into pickling device's temperature risees, can effectively improve the pickling effect, can reduce the operating temperature of pickle, reduces the consumption that volatilizees of pickle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a strip steel pickling system provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the utility model provides a belted steel pickling system, including pickling installation 5, in dephosphorization mechanism has been arranged to pickling installation 5's belted steel entrance side, dephosphorization mechanism includes broken phosphorus unit and high pressure water dephosphorization unit, high pressure water dephosphorization unit includes a plurality of dephosphorization nozzles and to each the supply line that the dephosphorization nozzle supplied water, in heat exchanger 41 has been arranged on the supply line, heat exchanger 41 disposes the high temperature heat transfer medium pipe.
The pickling device 5 is a conventional device in the art, and the specific structure thereof is not described herein.
The scale breaking unit 2 is used for carrying out scale breaking treatment on the surface of the strip steel, so that the iron scale on the surface of the strip steel becomes loose and is easy to fall off, and the subsequent scale removing effect can be effectively improved. In one embodiment, as shown in fig. 1, the scale breaking unit 2 comprises a scale breaking chamber and a scale breaker arranged in the scale breaking chamber, wherein the scale breaking chamber is provided with a second strip steel inlet, a second strip steel outlet and a dust extraction pipe; the scale breaking chamber is designed in a closed manner, a certain negative pressure can be generated in the chamber, and the scale floating in the chamber can be conveniently pumped away through the dust pumping pipe. The scale breaker is an existing device, and the specific structure of the scale breaker is not described in detail here.
Further preferably, as shown in the figure, a front tension roller set 1 is arranged on the inlet side of the strip steel of the phosphorus breaking unit, and a rear tension roller set 3 is arranged between the phosphorus breaking unit and the high-pressure water phosphorus removal unit. In the embodiment, the front tension roller group 1 and the rear tension roller group 3 are respectively arranged at the front and the rear of the scale breaking unit 2, the strip steel generates certain tension through the tension rollers, and the scale breaking unit 2 is bent, so that the iron scales on the surface of the strip steel are crushed or pulled apart, and part of the iron scales can fall off, namely, the scale breaking effect on the strip steel can be improved through the arrangement of the tension rollers.
Further preferably, at least some of the front tension roller group 1 and the rear tension roller group 3 are heating rollers capable of heating the strip steel, and preferably, each of the tension rollers is a heating roller. In this embodiment, at least a part of the heating rollers are electromagnetic heating rollers, which are available from the market and the specific structure of which is not described herein; the electromagnetic heating roller has the advantages of reliable operation, high on-off response speed, easy adjustment of heating temperature and the like, good heating effect on the strip steel, environmental protection and no pollution. The tension roller is arranged as the heating roller, so that the strip steel can be well preheated, and the preheating effect and efficiency of the strip steel can be remarkably improved by matching with a subsequent high-pressure water dephosphorization unit adopting hot water. Furthermore, the wrap angle between at least part of the heating roller and the strip steel is not less than 180 degrees, so that the contact area between the strip steel and the heating roller can be increased, and the heating effect of the heating roller on the strip steel is improved.
The high-pressure water descaling unit 4 is used for washing loose iron scales on the surface of the strip steel. Preferably, the phosphorus removal nozzles are distributed to form a plurality of groups of spraying structures which are sequentially arranged along the running direction of the strip steel, each group of spraying structures comprises two spraying groups which are distributed on the upper side and the lower side of a running channel of the strip steel, and each spraying group comprises a plurality of phosphorus removal nozzles which are sequentially arranged along the width direction of the strip steel. The upper surface and the lower surface of the strip steel are washed by the spraying groups, so that the removal effect of the iron oxide scales can be ensured. Preferably, each spraying group above the strip steel operation channel is supplied with water through a first water supply pipe, each spraying group below the strip steel operation channel is supplied with water through a second water supply pipe, and the first water supply pipe and the second water supply pipe are respectively provided with a regulating valve and a heat exchanger 41; based on the structure, the descaling operation on the upper surface of the strip steel and the descaling operation on the lower surface of the strip steel are mutually independent, the pressure of the first water supply pipe and the second water supply pipe and the flow of each descaling nozzle can be adjusted according to the growth conditions of iron scales on the upper surface and the lower surface of the strip steel, and the descaling water consumption is saved while the descaling effect is ensured.
The heat exchanger 41 is used for heating the descaling water, and preferably heating the descaling water to 80-90 ℃; that is, the high-temperature hot water is sprayed by each descaling nozzle, so that the strip steel can be heated while being descaled, the temperature of the strip steel entering the pickling device 5 is increased, the pickling effect can be effectively improved, the working temperature of the pickling solution can be reduced, and the volatilization consumption of the pickling solution can be reduced.
It can be understood that the heat exchanger 41 is an indirect heat exchanger 41, and the high-temperature heat exchange medium circulating in the high-temperature heat exchange medium pipe may be hot oil, high-temperature flue gas, or the like. In the embodiment, the high-temperature heat exchange medium pipe is connected with a smoke exhaust pipe of the annealing furnace, or the high-temperature heat exchange medium pipe is connected with a smoke exhaust pipe of the heating furnace; specifically, when the pickling system is applied to a strip steel rolling production line, the high-temperature heat exchange medium pipe is connected with a heating furnace smoke exhaust pipe, and when the pickling system is applied to a strip steel galvanizing production line, the high-temperature heat exchange medium pipe is connected with an annealing furnace smoke exhaust pipe, so that the energy consumption can be effectively saved by using the waste heat of a by-product of the production line.
In one embodiment, the high-pressure water dephosphorization unit further comprises a dephosphorization chamber, the dephosphorization chamber is provided with a first strip steel inlet and a first strip steel outlet, and the dephosphorization nozzles are uniformly distributed in the dephosphorization chamber. The descaling chamber adopts a closed design, and can play a certain heat preservation effect. Further preferably, as shown in the figure, the heat exchanger 41 is arranged at the top of the phosphorus removal chamber, and is convenient to install and maintain.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a belted steel pickling system, includes the acid dip pickle, in the strip steel entrance side of acid dip pickle has arranged dephosphorization mechanism, dephosphorization mechanism is including broken phosphorus unit and high pressure water dephosphorization unit, high pressure water dephosphorization unit includes a plurality of dephosphorization nozzles and to each water supply line that dephosphorization nozzle supplied water, its characterized in that: and a heat exchanger is arranged on the water supply pipeline, and the heat exchanger is provided with a high-temperature heat exchange medium pipe.
2. The strip steel pickling system of claim 1, wherein: the high-temperature heat exchange medium pipe is connected with the smoke exhaust pipe of the annealing furnace, or the high-temperature heat exchange medium pipe is connected with the smoke exhaust pipe of the heating furnace.
3. The strip steel pickling system of claim 1, wherein: each dephosphorization nozzle is distributed to form a plurality of groups of spraying structures which are sequentially arranged along the running direction of the strip steel, each group of spraying structures comprises two spraying groups which are distributed on the upper side and the lower side of the running channel of the strip steel, and each spraying group comprises a plurality of dephosphorization nozzles which are sequentially arranged along the width direction of the strip steel.
4. The strip steel pickling system of claim 3, wherein: the spraying groups above the band steel operation channel are supplied with water through a first water supply pipe, the spraying groups below the band steel operation channel are supplied with water through a second water supply pipe, and the first water supply pipe and the second water supply pipe are respectively provided with a regulating valve and a heat exchanger.
5. The strip steel pickling system of claim 1, wherein: the high-pressure water dephosphorization unit further comprises a dephosphorization chamber, the dephosphorization chamber is provided with a first strip steel inlet and a first strip steel outlet, and the dephosphorization nozzles are uniformly distributed in the dephosphorization chamber.
6. The strip steel pickling system of claim 5, wherein: the heat exchanger is arranged at the top of the dephosphorization chamber.
7. The strip steel pickling system of claim 1, wherein: and a front tension roller set is arranged on the inlet side of the strip steel of the phosphorus breaking unit, and a rear tension roller set is arranged between the phosphorus breaking unit and the high-pressure water phosphorus removal unit.
8. The strip steel pickling system of claim 7, wherein: in the front tension roller group and the rear tension roller group, at least part of tension rollers are heating rollers capable of heating strip steel.
9. The strip steel pickling system of claim 8, wherein: at least a part of the heating roller is an electromagnetic heating roller.
10. The strip steel pickling system according to claim 1 or 7, wherein: the phosphorus breaking unit comprises a phosphorus breaking chamber and a phosphorus breaking machine arranged in the phosphorus breaking chamber, and a second strip steel inlet, a second strip steel outlet and a dust extraction pipe are arranged on the phosphorus breaking chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022699604.3U CN214168148U (en) | 2020-11-20 | 2020-11-20 | Strip steel pickling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022699604.3U CN214168148U (en) | 2020-11-20 | 2020-11-20 | Strip steel pickling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214168148U true CN214168148U (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022699604.3U Active CN214168148U (en) | 2020-11-20 | 2020-11-20 | Strip steel pickling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214168148U (en) |
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2020
- 2020-11-20 CN CN202022699604.3U patent/CN214168148U/en active Active
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