CN213652642U - Energy-saving circular passivation system for color steel plate - Google Patents
Energy-saving circular passivation system for color steel plate Download PDFInfo
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- CN213652642U CN213652642U CN202022587499.4U CN202022587499U CN213652642U CN 213652642 U CN213652642 U CN 213652642U CN 202022587499 U CN202022587499 U CN 202022587499U CN 213652642 U CN213652642 U CN 213652642U
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Abstract
The utility model discloses an energy-saving circular passivation system for color steel plates, which comprises a casing, a passivation box, a first filter chamber, a heating catalysis chamber, a dosing adjusting device, a second filter chamber and a passivation liquid storage tank, wherein a closed installation cavity is arranged in the casing; the passivation box is arranged at the top of the machine shell, a passivation cavity is arranged in the passivation box and is communicated with the passivation liquid collecting tank, a feed inlet and a discharge outlet which are communicated with the passivation cavity are respectively arranged at the two horizontal ends of the passivation cavity, and a drain pipe which is communicated with the passivation cavity is arranged at the bottom of the passivation cavity; the first filter chamber is arranged at the top of the installation cavity, the drain pipe is communicated with the first filter chamber, and a preliminary filter material is arranged at the bottom of the first filter chamber; the heating catalysis chamber is communicated with the first filter cavity and comprises a heating pipeline arranged on the inner side wall of the heating catalysis chamber; the dosing adjusting device is communicated with the heating catalysis chamber; the second filter chamber is arranged in the mounting cavity and communicated with the heating catalysis chamber and the passivation liquid collecting tank, and a precise filter material is arranged at the bottom of the second filter chamber.
Description
Technical Field
The utility model belongs to the technical field of various steel sheet processing equipment, especially, relate to an energy-conserving circulation passivation system of various steel sheet.
Background
In order to improve the corrosion resistance of the color steel plate, the common method is to perform acid pickling passivation before color coating of the color steel plate, remove oxide skin generated after welding and high-temperature processing, make the color steel plate bright and bright, and form an oxide film taking chromium as a main substance on the processed surface, so that secondary oxygen corrosion is not generated, and the passivation purpose is achieved, thereby improving the surface corrosion resistance of stainless steel products and prolonging the service life of equipment. Meanwhile, the pickled and passivated color steel plate product has uniform appearance and good coloring effect, so the pickling and passivation of the color steel plate is a widely applied treatment means and process
The traditional passivation technology filters the passivation waste water after cyclic utilization by using a filter, but the existing filter has the defects of high energy consumption, high use cost, low filtering efficiency and unsatisfactory filtering effect, can not conveniently recover passivation liquid, and increases the production cost and unnecessary waste of enterprises.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing an energy-conserving circulation passivation system of various steel sheet avoids the passivation liquid of recycling to influence product quality, furthest with the repeated effective utilization of passivation liquid, reduces the use amount of passivation liquid, has reduced the manufacturing cost of enterprise to practiced thrift the resource, avoided wasting of resources and environmental pollution, reduce energy consumption, energy saving and consumption reduction reduces use cost, and the practicality is strong.
In order to achieve the purpose, the utility model provides an energy-saving circulating passivation system for color steel plates, which is characterized in that a casing is provided with a closed installation cavity inside; the passivation box is arranged at the top of the shell, a passivation cavity is arranged in the passivation box and is communicated with a passivation liquid collecting pool, a feed inlet and a discharge outlet which are communicated with the passivation cavity are respectively formed in the two horizontal ends of the passivation cavity, a drain pipe which is communicated with the passivation cavity is arranged at the bottom of the passivation cavity, and a steel plate can penetrate into the passivation cavity from the feed inlet and penetrate out from the discharge outlet; the first filter chamber is arranged at the top in the installation chamber, the drain pipe is communicated with the first filter chamber, and a primary filter material is arranged in the first filter chamber to filter passivation wastewater; the heating catalytic chamber is arranged in the mounting cavity, is positioned below the first filtering chamber and is communicated with the first filtering chamber, and a heating pipeline is arranged on the inner side wall of the heating catalytic chamber to heat the passivation wastewater; the dosing adjusting device is arranged on one side of the shell and is communicated with the heating catalysis chamber, and the dosing adjusting device can add a catalyst into the heating catalysis chamber so as to catalyze the passivated wastewater; the second filter chamber is arranged in the mounting chamber, is positioned below the heating catalytic chamber and is communicated with the heating catalytic chamber and the passivation solution collecting tank, a precision filter material is arranged in the second filter chamber, and the second filter chamber is used for filtering the passivation wastewater for the second time and inputting the filtered passivation solution into the passivation solution collecting tank; and the passivation liquid storage tank is arranged on one side of the shell and communicated with the passivation liquid collecting tank so as to add new passivation liquid to the passivation liquid collecting tank.
In one example, the energy-saving circular passivation system for color steel plates further comprises a stirring device, wherein the stirring device is arranged in the heating catalysis chamber and comprises a stirring piece, and the stirring piece can rotate around a vertical axis to stir the passivation wastewater in the heating catalysis chamber.
In one example, the energy-saving circular passivation system for color steel plates further comprises an air suction device, wherein the air suction device is arranged on one side of the casing and is communicated with the heating catalytic chamber, and the air suction device can suck waste gas generated by catalysis in the heating catalytic chamber.
In one example, the catalyst added by the dosing adjustment device is slaked lime.
In one example, the preliminary filter material includes activated carbon.
In one example, the passivating liquid collection pool is disposed at a bottom within the mounting chamber and below the second filter chamber.
Through the utility model provides an energy-conserving circulation passivation system of various steel sheet can bring following beneficial effect:
1. when the steel plate passes through the passivation cavity, the steel plate is passivated by the passivation solution; impurities such as ferric oxide, carbon dioxide, nitrous acid, carbon monoxide and ferric trifluoride are generated in the passivation solution, passivation wastewater is directly discharged through a drain pipe and flows into a first filtering chamber, and large-particle impurities such as ferric trifluoride and oxide skin in the passivation wastewater are filtered in the first filtering chamber to play a role of primary filtering; through the arrangement of the heating catalytic chamber, nitrous acid in the passivation wastewater is preheated and decomposed into water H2O and dinitrogen trioxide N2O3, and N2O3 is decomposed into nitrogen dioxide NO2 and nitrogen oxide NO, and the chemical formula is as follows: 2HNO2 ═ N2O3+ H2O ═ H2O + NO ═ C2 ℃ ═ N dioxide NO2 is dissolved in water and reacts with the water to generate nitric acid or nitric acid and nitric oxide, so that nitrous acid in the passivation solution is removed; set up the second filter chamber, further filter the passivation liquid in the heating catalysis room, guarantee the filter effect, avoid the passivation liquid of recycling to influence product quality, effectively realize the loop filter recycle of passivation liquid, reduce the use amount of passivation liquid, reduced the manufacturing cost of enterprise to practiced thrift the resource, avoided wasting of resources and environmental pollution, reduce energy consumption, energy saving and consumption reduction reduces use cost, and the practicality is strong, is fit for popularizing and applying.
2. Through setting up agitating unit, when adding medicine adjustment mechanism and adding the catalyst, agitating unit's stirring piece rotates slowly around vertical axis to with catalyst and passivation waste water intensive mixing, guarantee the catalytic effect of catalyst, guarantee the product quality of the passivation liquid of cyclic use, the practicality is strong, is fit for popularizing and applying.
3. Nitrous acid can decompose into water H2O and nitrogen trioxide N2O3 after the heating, and N2O3 can decompose into NO2 and NO, and N2O3 and NO are toxic gas, in order to prevent the waste gas polluted environment that the catalysis produced and influence staff's health, set up the device that induced drafts and with waste gas suction and handle, the practicality is strong, environmental protection safety, is fit for popularizing and applying.
4. Reaction of carbon dioxide in passivating waste water by slaked lime Ca (OH)2+CO2＝CaCO3↓+H2O, generate white deposit, only need filter just can accomplish through the second filter chamber afterwards and purify, the principle is simple, convenient to use, and is with low costs, and the practicality is strong, is fit for popularizing and applying.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is the structural schematic diagram of the energy-saving circular passivation system for color steel plates of the present invention.
Detailed Description
In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.
As shown in fig. 1, an embodiment of the present invention provides an energy-saving circular passivation system 100 for color steel plates, which includes a housing 1, a passivation tank 2, a first filtering chamber 4, a heating catalysis chamber 5, a dosing adjustment device 6, a second filtering chamber 7, and a passivation solution storage tank 8, wherein a sealed installation cavity is provided inside the housing 1; the passivation box 2 is arranged at the top of the machine shell 1, a passivation cavity 21 is arranged in the passivation box 2, the passivation cavity 21 is communicated with the passivation liquid collecting tank 3, a feed inlet 22 and a discharge outlet 23 which are communicated with the passivation cavity 21 are respectively arranged at two horizontal ends of the passivation cavity 21, a drain pipe 24 which is communicated with the passivation cavity 21 is arranged at the bottom of the passivation cavity 21, and a steel plate can penetrate into the passivation cavity 21 from the feed inlet 22 and penetrate out from the discharge outlet 23; the first filtering chamber 4 is arranged at the top part in the installation chamber, the drain pipe 24 is communicated with the first filtering chamber 4, and a primary filtering material 41 is arranged in the first filtering chamber 4 to filter the passivation wastewater; the heating catalytic chamber is arranged in the installation cavity, is positioned below the first filtering chamber 4 and is communicated with the first filtering chamber 4, and the inner side wall of the heating catalytic chamber 5 is provided with a heating pipeline 51 to heat the passivation wastewater; the dosing adjusting device 6 is arranged on one side of the machine shell 1 and is communicated with the heating catalysis chamber 5, and the dosing adjusting device 6 can add a catalyst into the heating catalysis chamber 5 to catalyze the passivated wastewater; the second filtering chamber 7 is arranged in the installation chamber, is positioned below the heating catalytic chamber 5, is communicated with the heating catalytic chamber 5 and the passivation liquid collecting tank 3, is internally provided with a precision filtering material 71, and is used for filtering passivation wastewater for the second time and inputting the filtered passivation liquid into the passivation liquid collecting tank 3; the passivation solution storage tank 8 is arranged on one side of the machine shell 1 and communicated with the passivation solution collecting tank 3 so as to add new passivation solution to the passivation solution collecting tank 3.
When the steel plate passes through the passivation cavity 21, the steel plate is passivated by the passivation solution; impurities such as ferric oxide, carbon dioxide, nitrous acid, carbon monoxide and ferric trifluoride are generated in the passivation solution, passivation wastewater is directly discharged through a drain pipe 24 and flows into the first filtering chamber 4, and large-particle impurities such as ferric trifluoride and oxide skin in the passivation wastewater are filtered in the first filtering chamber 4 to play a role of primary filtering; by arranging the heating catalytic chamber 5, nitrous acid in the passivation wastewater is preheated and decomposed into water H2O and dinitrogen trioxide N2O3, and N2O3 is decomposed into nitrogen dioxide NO2 and nitrogen oxides NO, and the chemical formula is as follows: 2HNO2 ═ N2O3+ H2O ═ H2O + NO ═ C2 ℃ ═ N dioxide NO2 is dissolved in water and reacts with the water to generate nitric acid or nitric acid and nitric oxide, so that nitrous acid in the passivation solution is removed; set up second filter chamber 7, further filter the passivation liquid in heating catalysis room 5, guarantee the filter effect, avoid the passivation liquid of recycling to influence product quality, effectively realize the loop filter recycle of passivation liquid, reduce the use amount of passivation liquid, reduced the manufacturing cost of enterprise to practiced thrift the resource, avoid wasting of resources and environmental pollution, reduce energy consumption, energy saving and consumption reduction reduces use cost, and the practicality is strong, is fit for popularizing and applying.
In one embodiment, nitrogen dioxide NO2 is dissolved in water and reacts with the water to form nitric acid or nitric acid and nitric oxide, which, when reacted with oxygen, forms the corrosive gaseous nitrogen dioxide (NO2), which passivates the reaction of nitric oxide with oxygen, as given by the equation: 2NO + O2 ═ 2NO 2.
Specifically, various energy-conserving circulation passivation system 100 of steel sheet still includes agitating unit 9, and agitating unit 9 sets up in heating catalysis room 5, and agitating unit 9 includes the stirring piece, and the stirring piece can be around vertical axis rotary motion to the passivation waste water in the stirring heating catalysis room 5. Through setting up agitating unit 9, when adding medicine adjustment mechanism and adding the catalyst, agitating unit 9's stirring piece rotates slowly around vertical axis to with catalyst and passivation waste water intensive mixing, guarantee the catalytic effect of catalyst, guarantee the product quality of the passivation liquid of recycling, the practicality is strong, is fit for popularizing and applying.
Specifically, the energy-saving circular passivation system 100 for color steel plates further comprises an air suction device 10, wherein the air suction device 10 is arranged on one side of the machine shell 1 and communicated with the heating catalysis chamber 5, and the air suction device 10 can suck waste gas generated by catalysis in the heating catalysis chamber 5. Nitrous acid can decompose into water H2O and nitrogen trioxide N2O3 after the heating, and N2O3 can decompose into NO2 and NO, and N2O3 and NO are toxic gas, in order to prevent the waste gas pollution environment that the catalysis produced and influence staff's health, set up induced draft device 10 with waste gas suction and handle, environmental protection safety, the practicality is strong, is fit for popularizing and applying.
Specifically, the catalyst added by the dosing adjusting device 6 is slaked lime. Reaction of carbon dioxide in passivating waste water by slaked lime Ca (OH)2+CO2＝CaCO3↓+H2O, generate white deposit, only need filter just can accomplish through second filter chamber 7 afterwards and purify, the principle is simple, convenient to use, and is with low costs, and the practicality is strong, is fit for popularizing and applying.
Specifically, the preliminary filter material 41 includes activated carbon. Iron oxide in the passivation waste water can mix the back through carbon and heat 3C +2Fe2O3 high temperature 3CO2 ═ 4Fe, generate iron and carbon dioxide, set up the active carbon in preliminary filter material 41, can mix with the active carbon at filterable in-process, work efficiency is high, heat the catalysis in the heating catalysis room 5 of flowing into again, need not to add the catalyst, save equipment resource, the practicality is strong, is fit for popularizing and applying.
Specifically, the passivating liquid collecting tank 3 is arranged at the bottom in the installation cavity and is positioned below the second filtering chamber 7. Passivation liquid collecting pit 3 sets up in sealed installation intracavity, prevents that external impurity from polluting the passivation liquid of filtering the completion, guarantees the product quality of passivation liquid, and the practicality is strong, is fit for popularizing and applying.
The utility model discloses an energy-conserving circulation passivation system 100's of various steel sheet working process does, passivation waste water in the passivation chamber 21 passes through in drain pipe 24 gets into first filter chamber 4, ferric trifluoride in the passivation waste water, large granule impurities such as cinder filter and the active carbon reaction in iron oxide and the primary filter material 41 in the passivation waste water in first filter chamber 4, passivation waste water flows in heating catalysis room 5, heating passivation waste water, ferric chloride mixes with carbon and heating reaction produces iron and carbon dioxide, the lime hydrate that adds medicine adjusting device 6 and carbon dioxide reaction formation white deposit, nitrous acid heating formation water and nitrous oxide, nitrous oxide decomposes into nitrogen dioxide and nitrogen monoxide again, the waste gas suction that induced draft device 10 will produce, passivation waste water flows in second filter chamber 7 afterwards, lime hydrate and white deposit in the heating catalysis room 5 will be heated and filtered, thereby completing the filtration, and the passivation solution flows into the passivation solution collecting tank 3 and is communicated to the passivation cavity 21 to realize the circulation.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The energy-saving circular passivation system for the color steel plate is characterized by comprising the following components:
the device comprises a machine shell, a first fixing device and a second fixing device, wherein a closed installation cavity is formed in the machine shell;
the passivation box is arranged at the top of the shell, a passivation cavity is arranged in the passivation box and is communicated with a passivation liquid collecting pool, a feed inlet and a discharge outlet which are communicated with the passivation cavity are respectively formed in the two horizontal ends of the passivation cavity, a drain pipe which is communicated with the passivation cavity is arranged at the bottom of the passivation cavity, and a steel plate can penetrate into the passivation cavity from the feed inlet and penetrate out from the discharge outlet;
the first filter chamber is arranged at the top in the installation chamber, the drain pipe is communicated with the first filter chamber, and a primary filter material is arranged in the first filter chamber to filter passivation wastewater;
the heating catalytic chamber is arranged in the mounting cavity, is positioned below the first filtering chamber and is communicated with the first filtering chamber, and a heating pipeline is arranged on the inner side wall of the heating catalytic chamber to heat the passivation wastewater;
the dosing adjusting device is arranged on one side of the shell and is communicated with the heating catalysis chamber, and the dosing adjusting device can add a catalyst into the heating catalysis chamber so as to catalyze the passivated wastewater;
the second filter chamber is arranged in the mounting chamber, is positioned below the heating catalytic chamber and is communicated with the heating catalytic chamber and the passivation solution collecting tank, a precision filter material is arranged in the second filter chamber, and the second filter chamber is used for filtering the passivation wastewater for the second time and inputting the filtered passivation solution into the passivation solution collecting tank; and
and the passivation liquid storage tank is arranged on one side of the shell and communicated with the passivation liquid collecting tank so as to add new passivation liquid to the passivation liquid collecting tank.
2. The energy-saving circular passivation system for color steel plates according to claim 1, further comprising a stirring device disposed in the heating catalysis chamber, wherein the stirring device comprises a stirring member capable of rotating around a vertical axis to stir the passivation wastewater in the heating catalysis chamber.
3. The energy-saving circular passivation system for color steel plates according to claim 1, further comprising an air suction device disposed at one side of the housing and communicated with the heating catalyst chamber, wherein the air suction device can suck the exhaust gas catalytically generated in the heating catalyst chamber.
4. The energy-saving circular passivation system for color steel plates according to claim 1, wherein the catalyst added by the chemical feeding adjusting device is slaked lime.
5. The energy-saving cyclic passivation system for color steel plates according to claim 1, wherein the primary filter material comprises activated carbon.
6. The energy-saving circular passivation system for color steel plates according to claim 1, wherein the passivation solution collecting tank is arranged at the bottom in the installation cavity and below the second filter chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022587499.4U CN213652642U (en) | 2020-11-10 | 2020-11-10 | Energy-saving circular passivation system for color steel plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022587499.4U CN213652642U (en) | 2020-11-10 | 2020-11-10 | Energy-saving circular passivation system for color steel plate |
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| CN213652642U true CN213652642U (en) | 2021-07-09 |
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| CN202022587499.4U Active CN213652642U (en) | 2020-11-10 | 2020-11-10 | Energy-saving circular passivation system for color steel plate |
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