CN212983057U - Metallographical corrosion waste liquid recovery and treatment device - Google Patents
Metallographical corrosion waste liquid recovery and treatment device Download PDFInfo
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- CN212983057U CN212983057U CN202021365720.5U CN202021365720U CN212983057U CN 212983057 U CN212983057 U CN 212983057U CN 202021365720 U CN202021365720 U CN 202021365720U CN 212983057 U CN212983057 U CN 212983057U
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Abstract
The utility model belongs to the technical field of the discarded object recovery processing, a metallography corrosion waste liquid recovery processing device is related to, establish the alkaline corrosion groove on the workstation including the card, alkali lye concentration adjustment tank, descaling bath and acidizing fluid concentration adjustment tank, alkaline corrosion groove and alkali lye concentration adjustment tank bottom intercommunication have the alkaline corrosion product decomposition case of taking the drain pipe, the intercommunication has the waste liquid of taking the drain pipe and in the neutralizing tank between alkaline corrosion groove and the descaling tank, neutralizing tank and alkaline corrosion product decomposition case pipeline intercommunication in the waste liquid, install the heating filter equipment in the alkaline corrosion product decomposition case, descaling tank and acidizing fluid concentration adjustment tank bottom intercommunication have the two-way flow tube of taking two-way circulating water pump, solve in the aluminium alloy macroscopic view corrosion test procedure, the alkaline corrosion groove, the produced waste liquid polluted environment of reaction in the descaling tank, be not conform to the problem of enterprise's development requirement.
Description
Technical Field
The utility model belongs to the technical field of the discarded object recovery processing, a metallography corrosion waste liquid recovery processing device is related to, especially, relate to a recovery processing device of macroscopical metallography corrosion acid and alkaline washing waste liquid.
Background
In the process of carrying out macroscopic metallographic corrosion inspection on an aluminum profile product, the specific reaction equation in the alkali corrosion tank is as follows: AL2O3+2NaOH＝＝2NaALO2+H2O；2AL+2NaOH+2H2O＝＝2NaALO2+3H2↑；NaALO2+2H2O＝＝AL(OH)3↓ + NaOH; because the aluminum section bar sample in the alkali corrosion tank frequently reacts with the alkali solution, a long-time experiment reaction generates waste liquid and precipitate. The specific reaction equation in the pickling tank is as follows: AL +6HNO3(concentrated) ═ AL (NO)3)3+3NO2↑+3H2O；AL2O3+6HNO3＝＝2AL(NO3)3+3H2O；AL+4HNO3(rare) ═ AL (NO)3)3+NO+2H2O; and (3) some waste liquid is generated due to the long-time cleaning reaction of the aluminum profile sample by the nitric acid solution in the pickling tank. At present, according to the requirement of DB21/1627 'Liaoning province integrated wastewater discharge standard', metallographic corrosion is requiredIn the inspection process, the waste liquid generated by the reaction in the alkaline etching tank and the pickling tank is recycled, and the environmental index is effectively reached.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a solve the aluminium alloy and carry out macroscopic metallography corrosion testing process in, the produced waste liquid polluted environment of reaction in alkaline etching groove, the descaling bath is not conform to the problem of enterprise development requirement, provides a metallography corrosion waste liquid recovery processing device.
In order to achieve the above object, the utility model provides a metallography corrosion waste liquid recovery processing device, including the alkaline corrosion groove of card on the workstation, alkali lye concentration adjustment tank, descaling bath and acidizing fluid concentration adjustment tank, alkaline corrosion groove and alkali lye concentration adjustment tank bottom intercommunication have the alkaline corrosion product decomposition case of taking the drain pipe, the intercommunication has the waste liquid neutralization groove of taking the drain pipe between alkaline corrosion groove and the descaling bath, neutralization groove and alkaline corrosion product decomposition case pipeline intercommunication in the waste liquid, install heating filter equipment in the alkaline corrosion product decomposition case, descaling bath and acidizing fluid concentration adjustment tank bottom intercommunication have the two-way flow tube of taking two-way circulating water pump.
The beneficial effect of this basic scheme lies in: the alkaline etching groove is used for alkaline cleaning the surface of the aluminum profile, and AL (OH) is generated after the aluminum profile is subjected to alkaline etching3And ↓ -aluminum hydroxide white precipitate flows into the alkaline etching product decomposition box to be heated and decomposed, the aluminum hydroxide in the alkaline etching product decomposition box generates aluminum oxide and water at the heating temperature of more than 100 ℃, the generated wastewater is discharged into a waste liquid neutralization tank, and the generated aluminum oxide can be returned to the furnace to be smelted, so that raw materials are saved. The alkali liquor concentration adjusting tank adjusts the pH value of the solution in the alkali etching tank through evaporation and concentration. The pickling tank is used for pickling the surface of the aluminum profile, and the acid liquor concentration adjusting tank is used for adjusting the pH value of the solution in the pickling tank through evaporation and concentration. When the solutions in the alkaline etching tank and the pickling tank can not meet the experimental requirements, the solutions are discharged to a waste liquid neutralizing tank for neutralization, and the damage to the environment caused by direct discharge is reduced.
Further, a gas-collecting hood is fixedly arranged on a workbench where the alkaline etching tank, the alkaline solution concentration adjusting tank, the pickling tank and the acid solution concentration adjusting tank are arranged, exhaust pipes communicated with each other are arranged on two sides of the gas-collecting hood, and an adsorption tower is arranged at the exhaust end of each exhaust pipe. Has the advantages that: the main waste gas of the metallographic corrosion reaction product comprises nitric oxide, nitrogen dioxide and hydrogen, and the gas-collecting hood and the adsorption tower are matched for recovering and treating the waste gas generated by the alkaline corrosion and the acid pickling of the aluminum profile.
Further, the heating and filtering device comprises a circulating water pump arranged in the alkaline corrosion product decomposition box, a circulating pipeline connected to the circulating water pump, a filter screen arranged in the circulating pipeline and capable of being heated, and a power supply and a manual controller electrically connected with the circulating water pump. Has the advantages that: the heatable filter screen can be with the aluminium hydroxide sediment heating decomposition that produces in the alkaline corrosion product decomposition case, and the waste water utilization circulating water pump that generates discharges to waste liquid neutralizing tank behind the solid impurity detached through the filter screen, and the regular time melting of returning after the aluminium oxide after the heating decomposition accumulates to a certain amount in the alkaline corrosion product decomposition incasement, and then the secondary recycles.
Further, concentration measuring instruments are arranged above the alkaline etching tank, the alkaline solution concentration adjusting tank, the pickling tank and the acid solution concentration adjusting tank. Has the advantages that: the concentration tester can monitor the alkali solution and the acid solution after evaporation and concentration in real time, and the alkali solution and the acid solution which meet the test requirements can be conveniently recycled to the alkali etching tank and the pickling tank respectively for reuse.
Furthermore, regulating valves are arranged on pipelines communicated with the alkaline etching tank, the pickling tank and the waste liquid neutralizing tank. Has the advantages that: when the solution can't satisfy the experimental requirement in alkaline etching groove and the descaling bath, open the governing valve, can all discharge waste alkali solution, acid solution to the waste liquid neutralization groove and carry out the neutralization, reduce the direct destruction that discharges and cause the environment, the governing valve can adjust the speed of discharging of alkali solution, acid solution simultaneously.
Further, a PH value on-line analyzer is arranged on the waste liquid neutralizing tank. Has the advantages that: the PH value on-line analyzer on the waste liquid neutralization tank can monitor the PH of the solution in the waste liquid neutralization tank.
Further, the inner wall of the alkaline etching product decomposition box is coated with a heat-resistant coating. Has the advantages that: the heat-resistant coating can prolong the service life of the alkaline etching product decomposition box.
Furthermore, an activated carbon waste gas filter valve is arranged in the adsorption tower. Has the advantages that: the active carbon waste gas filter valve on the adsorption tower can ensure the adsorption of the adsorption tower on nitrogen oxides, so that the nitrogen oxides are discharged into the atmosphere when meeting the standard.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a metallography corrodes waste liquid recovery processing apparatus, alkaline corrosion result decomposition case between alkaline corrosion groove and the alkali lye concentration adjustment tank can deposit the aluminium hydroxide after the aluminium alloy alkaline corrosion and decompose, and the waste water row of formation is to the waste liquid neutralization groove, and the aluminium oxide of formation can be melted back to the stove, practices thrift raw and other materials. The alkali liquor concentration adjusting tank can adjust the pH value of the solution in the alkali etching tank through evaporation and concentration. The acid liquor concentration adjusting tank can adjust the pH value of the solution in the pickling tank through evaporation and concentration. And when the solution in the alkaline etching tank and the pickling tank can not meet the experimental requirements, the solution can be discharged to a waste liquid neutralizing tank for neutralization, so that the damage to the environment caused by direct discharge is reduced.
2. The utility model discloses a metallographical corrosion waste liquid recovery processing device, through the gas collecting channel who takes the adsorption tower, can adsorb the processing with aluminium alloy alkaline corrosion, produced nitric oxide of pickling, nitrogen dioxide discarded object, make its emission atmosphere when meeting the standard, reduce the environmental damage.
3. The utility model discloses a metallography corrosion waste liquid recovery processing device can improve the utilization ratio of alkali solution, acid solution, reduces the emission of waste liquid, reduces the consumption of raw and other materials, for enterprise's reduce cost, energy saving and consumption reduction, furthest reduces the adverse effect to the environment, accords with the future development requirement of enterprise, accords with the ecological development theory that the country proposed, more is favorable to the protection of environment.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of the metallographic etchant waste liquid recovery and treatment apparatus of the present invention;
FIG. 2 is the schematic diagram of the internal structure of the alkaline corrosion decomposition tank in the metallographic corrosive waste liquid recovery and treatment device.
Reference numerals: the device comprises an alkaline etching tank 1, an alkaline solution concentration adjusting tank 2, a pickling tank 3, an acid solution concentration adjusting tank 4, a waste liquid neutralizing tank 5, an alkaline etching product decomposition tank 6, a manual controller 61, a circulating water pump 62, a power supply 63, a filter screen 64, a drain pipe 7, a concentration tester 8, an exhaust pipe 9, a bidirectional flow pipe 10, an adsorption tower 11, a gas collecting hood 12, a bidirectional circulating water pump 13, a PH value on-line analyzer 14 and an adjusting valve 15.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
The metallographic etching waste liquid recovery and treatment device comprises an alkaline etching tank 1, an alkaline solution concentration adjusting tank 2, a pickling tank 3 and an acid solution concentration adjusting tank 4 which are clamped on a workbench, wherein a gas collecting hood 12 is fixedly installed on the workbench where the alkaline etching tank 1, the alkaline solution concentration adjusting tank 2, the pickling tank 3 and the acid solution concentration adjusting tank 4 are located, communicated exhaust pipes 9 are installed on two sides of the gas collecting hood 12, an adsorption tower 11 is installed on an exhaust end of each exhaust pipe 9, and an activated carbon waste gas filter valve is placed in each adsorption tower 11. The main waste gas of the metallographic corrosion reaction product comprises nitric oxide, nitrogen dioxide and hydrogen, and the activated carbon waste gas filter valve on the adsorption tower 11 can ensure the adsorption of the adsorption tower 11 on the nitrogen oxide, so that the nitrogen oxide is discharged into the atmosphere according with the standard.
The bottoms of the alkaline etching tank 1 and the alkaline solution concentration adjusting tank 2 are communicated with an alkaline etching product decomposition tank 6 with a water drainage pipe 7, and the inner wall of the alkaline etching product decomposition tank 6 is coated with a heat-resistant coating. The heat resistant coating can increase the service life of the caustic corrosion product decomposition tank 6. A waste liquid neutralizing tank 5 with a water drainage pipe 7 is communicated between the alkaline etching tank 1 and the pickling tank 3, and a PH value on-line analyzer 14 is arranged on the waste liquid neutralizing tank 5. The PH value on-line analyzer 14 of the waste liquid neutralization tank 5 can monitor the PH of the solution in the waste liquid neutralization tank 5. The waste liquid neutralizing tank 5 is communicated with the alkaline etching product decomposition tank 6 through a pipeline, a heating and filtering device is installed in the alkaline etching product decomposition tank 6, and the heating and filtering device comprises a circulating water pump 62 installed in the alkaline etching product decomposition tank 6, a circulating pipeline connected to the circulating water pump 62, a filter screen 64 which is installed in the circulating pipeline and can be heated, a power supply 63 electrically connected with the circulating water pump 62, and a manual controller 61. The heatable filter screen 64 can heat and decompose aluminium hydroxide sediment produced in the alkaline corrosion product decomposition box 6, the generated waste water is discharged to the waste liquid neutralization tank 5 after solid impurities are removed by the circulating water pump 62 and the filter screen 64, and the heated and decomposed aluminium oxide is accumulated to a certain amount in the alkaline corrosion product decomposition box 6 and then is periodically smelted back to the furnace for secondary recycling. The bottom parts of the pickling tank 3 and the acid liquor concentration adjusting tank 4 are communicated with a bidirectional flow pipe 10 with a bidirectional circulating water pump 13.
The pipelines of the alkaline etching tank 1 and the pickling tank 3 which are communicated with the waste liquid neutralizing tank 5 are provided with regulating valves 15. When the solution can't satisfy the experimental requirement in alkaline etching groove 1 and the descaling bath 3, open governing valve 15, can all discharge waste alkali solution, acid solution to the waste liquid neutralization groove 5 and carry out the neutralization, reduce the direct destruction of discharging and causing the environment, governing valve 15 can adjust the discharge rate of alkali solution, acid solution simultaneously.
In the metallographic corrosion waste liquid recovery and treatment device, the alkaline etching groove 1 is used for carrying out alkaline cleaning on the surface of the aluminum section, and AL (OH) is generated after the aluminum section is subjected to alkaline etching3And ↓ -aluminum hydroxide white precipitate flows into the alkaline etching product decomposition box 6 to be heated and decomposed, aluminum hydroxide in the alkaline etching product decomposition box 6 is heated at a temperature of more than 100 ℃ to generate aluminum oxide and water, the generated wastewater is discharged into the waste liquid neutralization tank 5 after solid impurities are removed by the circulating water pump 62 through the filter screen 64, and the heated and decomposed aluminum oxide is accumulated to a certain amount in the alkaline etching product decomposition box 6 and then is periodically melted and re-used. The alkali liquor concentration adjusting tank 2 adjusts the PH value of the solution in the alkali etching tank 1 through evaporation and concentration, and real-time monitoring is carried out through a concentration measuring instrument 8 above the alkali etching tank 1 and the alkali liquor concentration adjusting tank 2.
The pickling tank 3 is used for pickling the surface of an aluminum profile, the acid liquor concentration adjusting tank 4 adjusts the pH value of the solution in the pickling tank 3 through evaporation and concentration, the concentration measuring instrument 8 above the pickling tank 3 and the acid liquor concentration adjusting tank 4 is used for monitoring in real time, and the acid solution meeting the test requirements is recovered to the pickling tank 3 through the bidirectional flow pipe 10 with the bidirectional circulating water pump 13 and is recycled. When the solutions in the alkaline etching tank 1 and the pickling tank 3 can not meet the experimental requirements, the regulating valve 15 is opened, the waste acid solution and the alkali solution are discharged to the waste liquid neutralizing tank 5 for neutralization, the PH value in the waste liquid neutralizing tank 5 is within the range of 6-9, when the PH value is greater than 9, the opening degree of the acid regulating valve 15 is increased, when the PH value is less than 6, the opening degree of the alkaline regulating valve 15 is increased so as to meet the II-level PH value control standard in the DB21/1627 Liaoning national Integrated wastewater discharge Standard, and finally the waste liquid meeting the standard is discharged to a sewage treatment plant for treatment.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a metallography corruption waste liquid recovery processing apparatus, its characterized in that, including the alkaline corrosion groove of card setting on the workstation, alkali lye concentration adjustment tank, descaling bath and acidizing fluid concentration adjustment tank, alkaline corrosion groove and alkali lye concentration adjustment tank bottom intercommunication have the alkaline etching product decomposition case of taking the drain pipe, intercommunication has the waste liquid neutralization groove of taking the drain pipe between alkaline corrosion groove and the descaling bath, waste liquid neutralization groove and alkaline etching product decomposition case pipeline intercommunication, install heating filter equipment in the alkaline etching product decomposition case, descaling bath and acidizing fluid concentration adjustment tank bottom intercommunication have the two-way flow tube of taking two-way circulating water pump.
2. The metallographic etchant waste liquid recovery processing device according to claim 1, wherein a gas collecting hood is fixedly mounted on a workbench on which the alkaline etching tank, the alkaline solution concentration adjusting tank, the pickling tank and the acid solution concentration adjusting tank are located, exhaust pipes communicated with each other are mounted on two sides of the gas collecting hood, and an adsorption tower is mounted on an exhaust end of each exhaust pipe.
3. The metallographical corrosion waste liquid recovery processing device of claim 2, wherein the heating and filtering device comprises a circulating water pump arranged in the alkaline corrosion product decomposition tank, a circulating pipeline connected to the circulating water pump, a filter screen capable of heating and arranged in the circulating pipeline, and a power supply and a manual controller electrically connected with the circulating water pump.
4. The apparatus for recovering and treating a spent metallographic etching solution according to claim 3, wherein concentration measuring instruments are provided above the alkaline etching bath, the alkaline solution concentration adjusting bath, the pickling bath, and the acid solution concentration adjusting bath.
5. The apparatus for recovering and treating a spent metallurgical corrosion solution according to claim 1, wherein the pipes connecting the alkaline etching tank and the pickling tank to the spent solution neutralizing tank are provided with regulating valves.
6. The apparatus for recovering and treating a spent metallographic etchant solution according to claim 1, wherein a PH analyzer is installed in the spent solution neutralization tank.
7. The apparatus for recovering and treating spent metallographic etchant solution according to claim 1, wherein a heat-resistant coating is applied to the inner wall of said alkaline corrosion product decomposition tank.
8. The metallographic etchant waste liquid recovery processing device according to claim 2, wherein an activated carbon waste gas filter valve is disposed in the adsorption tower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021365720.5U CN212983057U (en) | 2020-07-13 | 2020-07-13 | Metallographical corrosion waste liquid recovery and treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021365720.5U CN212983057U (en) | 2020-07-13 | 2020-07-13 | Metallographical corrosion waste liquid recovery and treatment device |
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| CN212983057U true CN212983057U (en) | 2021-04-16 |
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| CN202021365720.5U Active CN212983057U (en) | 2020-07-13 | 2020-07-13 | Metallographical corrosion waste liquid recovery and treatment device |
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