CN217202312U - Sour waste liquid pretreatment of module of electron and sour waste liquid recovery processing production line of electron - Google Patents
Sour waste liquid pretreatment of module of electron and sour waste liquid recovery processing production line of electron Download PDFInfo
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- CN217202312U CN217202312U CN202123288470.7U CN202123288470U CN217202312U CN 217202312 U CN217202312 U CN 217202312U CN 202123288470 U CN202123288470 U CN 202123288470U CN 217202312 U CN217202312 U CN 217202312U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The utility model relates to the field of comprehensive treatment of electronic acid waste liquid and flue gas generated in the sulfuric acid production process, and provides an electronic acid waste liquid pretreatment module, which comprises at least one of a ceramic membrane filter, an activated carbon treatment unit and an ion exchange resin unit; the electronic acid waste liquid recovery treatment production line comprises an electronic acid waste liquid pretreatment module, a storage battery sulfuric acid absorption module and a tail gas absorption module, wherein after the electronic acid waste liquid is pretreated by the pretreatment module, acid is respectively supplied to the storage battery sulfuric acid absorption module and the tail gas absorption module so as to recover the electronic acid waste liquid; the sulfur trioxide in the flue gas in the storage battery sulfuric acid absorption module reacts with water in concentrated sulfuric acid to generate sulfuric acid, and the sulfur dioxide in the tail gas reacts with hydrogen peroxide in the electronic acid waste liquid in the tail gas absorption module to generate sulfuric acid after the reaction. Has the advantages that: not only recover sulfur trioxide and sulfur dioxide in the electronic acid waste liquid and the flue gas, but also reduce the use amount of desalted water and improve the concentration of sulfuric acid.
Description
Technical Field
The utility model relates to a flue gas integrated processing field that produces in the sour waste liquid of electron and the sulphuric acid production process especially relates to a sour waste liquid pretreatment module of electron and sour waste liquid recovery processing production line of electron.
Background
Wet electronic chemicals, also called high-purity sulfuric acid, ultra-pure sulfuric acid, belong to ultra-clean high-purity reagent, it is an indispensable key basic chemical reagent in the development process of microelectronic technology, apply to assembly and process of semiconductor, very large-scale integrated circuit extensively, also apply to the cleaning of the silicon chip, photoetch, corrode, corrosion and electroplating of the printed circuit board and wash.
The applicant is a chemical enterprise specially producing electronic acid and various contents of sulfuric acid, the electronic acid sold at present is mainly used for cleaning electronic chips by using electronic-grade sulfuric acid in the etching and cleaning processes, no reasonable recycling method for the electronic acid waste liquid generated at present exists in China, and the applicant further improves the utilization rate of the acid by recycling the sold and used electronic acid waste liquid in order to improve the competitiveness of products of the company.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an sour waste liquid pretreatment module of electron and sour waste liquid of electron and flue gas recovery processing production line in coordination adopts the rate of recovery height of the sour waste liquid of this production line electron and flue gas.
The technical scheme of the utility model is that:
an electronic acid waste liquid pretreatment module comprises at least one of a ceramic membrane filter, an activated carbon treatment unit and an ion exchange resin unit, wherein the ceramic membrane filter is a container with a built-in microporous ceramic membrane, and the filtration grade of the microporous ceramic membrane is 50 nanometers; the activated carbon treatment unit is a container internally provided with S-grade activated carbon, and is used for adsorbing colored organic matters in the electronic acid waste liquid by utilizing S-grade activated carbon adsorbability to remove the colored organic matters in the electronic acid waste liquid; the ion exchange resin unit is a container with H-shaped exchange resin inside, and metal ions in the electronic acid waste liquid are removed through ion exchange of the H-shaped exchange resin.
An electronic acid waste liquid recovery treatment production line comprises the electronic acid waste liquid pretreatment module, a storage battery sulfuric acid absorption module and a tail gas absorption module;
a submerged centrifugal pump and a liquid level sensor are arranged in the waste acid ground tank, the submerged centrifugal pump conveys the electronic acid waste liquid in the waste acid ground tank from the top of a waste acid storage tank to the waste acid storage tank through a pipeline, so that the liquid level of the waste acid ground tank keeps a reasonable index range until the electronic acid waste liquid in the tank car or the ton bucket is discharged completely; an acid discharge valve is arranged on one side of the bottom of the waste acid storage tank, the acid discharge valve is opened to enable the electronic acid waste liquid to flow into a waste acid ground tank, the submerged centrifugal pump is started at the same time, the electronic acid waste liquid in the waste acid ground tank sequentially passes through all three units or any 1-2 units of a ceramic membrane filter, an activated carbon treatment unit and an ion exchange resin unit through the submerged centrifugal pump and a pipeline to remove all three or any 1-2 of solid mechanical impurities, organic matters or heavy metal ions in the electronic acid waste liquid, a discharge port of the electronic acid waste liquid pretreatment module is respectively communicated with an acid supplementing port I of a storage battery sulfuric acid absorption module and an acid supplementing port II of a tail gas absorption module through pipelines, and then acid is respectively supplied to the storage battery sulfuric acid absorption module and the tail gas absorption module through pipelines;
furthermore, in the process, the electronic acid waste liquid passes through all three units or any 1-2 units of the ceramic membrane filter, the active carbon treatment unit and the ion exchange resin unit in sequence through the submerged centrifugal pump and the pipeline by controlling the pipeline and the electromagnetic valve on the pipeline;
the storage battery sulfuric acid absorption module sequentially comprises an acid distributor I, a packing layer I, a transition layer and a circulation tank I from top to bottom, the electronic acid waste liquid enters the circulation tank I from an acid supplementing port I on one side of the circulation tank I, concentrated sulfuric acid with a certain liquid level height and containing certain moisture is arranged in the circulation tank I, an acid outlet I is arranged at the bottom of the circulation tank I, a liquid level sensor and a concentration sensor are arranged in the circulation tank I, the sulfuric acid in the circulation tank I is discharged through the acid outlet I after reaching the certain liquid level height, and the sulfuric acid is injected into the storage battery sulfuric acid absorption module from an acid inlet I on one side of the top of the storage battery sulfuric acid absorption module through a power device to realize internal circulation or enters a metering tank to further enable acid liquid in the circulation tank I to be maintained at the certain liquid level height all the time; after the sulfuric acid in the circulation tank I reaches a certain concentration, desalted water can be added into the circulation tank I through a water replenishing port on one side of the circulation tank I, so that the acid liquid in the circulation tank I is further kept at a certain concentration all the time;
the tail gas absorption module sequentially comprises an acid distributor II, a packing layer II and a circulating groove II from top to bottom, the electronic acid waste liquid enters a circulating groove II from an acid supplementing port II on one side of the circulating groove II, dilute sulfuric acid is arranged in the circulating groove II, an acid outlet II is arranged on one side of the circulating groove II close to the bottom of the circulating groove II, a liquid level sensor and a concentration sensor are arranged in the circulating groove II, after the acid liquor in the circulation tank II reaches a certain liquid level height, the acid liquor is pumped into the tail gas absorption module from one side of the acid inlet II through a power device or is collected to enable the acid liquor in the circulation tank II to be maintained at a certain liquid level height all the time, a water inlet I is arranged on one side of the circulation tank II, when the concentration sensor detects that the acid liquor concentration in the circulation tank II is larger than a certain value, the power device is automatically opened, and desalted water is added into the circulation tank II from the water inlet I to control the acid liquor concentration within a certain range;
the concentrated sulfuric acid concentration in the circulation tank I is 98%, and the dilute sulfuric acid concentration in the circulation tank II is 30%.
Further, the power devices are all circulating pumps;
gas exhaust inlets are formed in the transition layer and one side of the circulating tank II, the gas exhaust inlets of the circulating tank II are higher than a water inlet I, an acid outlet I and an acid inlet I of the circulating tank II, flue gas is introduced into the storage battery sulfuric acid absorption module through a pipeline and the gas exhaust inlets, the flue gas comes from flue gas generated in the sulfuric acid production process, the flue gas contains a large amount of sulfur trioxide and a small amount of sulfur dioxide, acid liquor entering the storage battery sulfuric acid absorption module from the top of the storage battery sulfuric acid absorption module is uniformly distributed through an acid distributor I, then flows through a packing layer I in a tower by means of self gravity and is in reverse contact with the flue gas, water in concentrated sulfuric acid reacts with the sulfur trioxide to generate sulfuric acid, and therefore the sulfuric acid is concentrated and then falls back to the circulating tank I; a tail gas outlet is formed in the top of the storage battery sulfuric acid absorption module and is communicated with a gas exhaust inlet on one side of a circulating groove II through a pipeline, tail gas containing trace sulfur dioxide after reaction in the storage battery sulfuric acid absorption module is exhausted from the tail gas outlet and enters the circulating groove II through the pipeline and the gas exhaust inlet on one side of the circulating groove II, acid liquor entering the tail gas absorption module from an acid inlet II is uniformly distributed through an acid distributor II and then flows through a packing layer II in a tower by virtue of self gravity to be in reverse contact with the tail gas, and the tail gas contains sulfur dioxide, so that hydrogen peroxide in the electronic acid waste liquid reacts with the sulfur dioxide to generate sulfuric acid, the concentration of the acid liquor after reaction is concentrated, and desalted water is added into the circulating groove II through a water inlet I to control the concentration of the acid liquor within a certain range;
the device further comprises 1 heat exchanger, wherein an acid liquid inlet, an acid liquid outlet, a water inlet II and a water outlet II are arranged on the heat exchanger, the acid liquid inlet is communicated with an acid outlet I at the bottom of the circulation tank I through a pipeline, the acid liquid outlet is communicated with an acid outlet pipeline communicated with the acid outlet I at one side of the storage battery sulfuric acid absorption module through a pipeline, and the water inlet II is communicated with the water tank through an outer pipe;
the device further comprises a plurality of electromagnetic valves for controlling the on-off state and the opening degree and control terminals, wherein the electromagnetic valves are distributed on each pipeline, and the control terminals are electrically connected with the submerged centrifugal pump, the liquid level sensor, the circulating pump, the waste acid pump, the concentration sensor and the electromagnetic valves and control the components;
the utility model has the advantages that:
the utility model discloses a method of electron acid waste liquid and flue gas coprocessing, carbon trioxide and carbon dioxide in electron acid waste liquid and the flue gas can be effectively retrieved, has not only increased sulphuric acid output, has saved partly demineralized water simultaneously, and is specific:
in battery sulphuric acid absorption module, the partial reaction in the water of the sulfur trioxide in the sulphuric acid device output flue gas and the 2% that contains in the concentrated sulfuric acid generates sulphuric acid, contain the sulfur dioxide in the tail gas after the reaction, absorb the module through letting in tail gas with tail gas, the sulfur dioxide reacts with the hydrogen peroxide solution in the electron acid waste liquid and generates sulphuric acid, the dilute sulphuric acid that the concentration becomes strong after the reaction maintains the concentration through adding the demineralized water, above-mentioned process has reduced the extra input of demineralized water, and can not cause the influence to the absorption technology of sulphuric acid, through this processing line, sulfur trioxide's conversion rate reaches 99.5% in the flue gas, further reduced sulfur trioxide's in the flue gas emission.
The arrangement of the waste acid storage tank ensures that the liquid level in the waste acid ground tank is kept within a reasonable range value, and the safety is guaranteed.
Due to the arrangement of the heat exchanger, the acid liquor with the high temperature after reaction is cooled and then works next step, and the working safety is guaranteed.
Utilize ceramic membrane filter, active carbon processing unit, solid mechanical impurity in the sour waste liquid of ion exchange resin unit removal electron, organic matter or heavy metal ion, the later stage work security has been ensured, furthermore, the ceramic membrane filter' S that adopts is 50 nanometers, utilize the adsorptivity of S level active carbon, adsorb the organic matter of taking the colour in the sour waste liquid of electron, utilize the acid-resistant resin that special material made, through the ion exchange of H type exchange resin, get rid of the metal ion in the sour waste liquid of electron, therefore the filterability is better, later stage work security is higher.
Drawings
FIG. 1 is a schematic view of the cooperative recycling production line of the electronic acid waste liquid and the flue gas of the present invention;
FIG. 2 is an enlarged view of a portion of the spent acid sump of FIG. 1;
FIG. 3 is an enlarged view of a portion of the battery sulfuric acid absorption module of FIG. 1;
FIG. 4 is an enlarged view of a portion of the exhaust absorption module of FIG. 1;
in the figure:
1. waste acid ground tank 2, ceramic membrane filter 3 and active carbon treatment unit
4. Ion exchange resin unit 5, storage battery sulfuric acid absorption module 6 and tail gas absorption module
1-1 parts of submerged centrifugal pump 1-2 parts of submerged centrifugal pump, liquid level sensor 7 parts of submerged centrifugal pump, and waste acid storage tank
5-1 parts of acid distributor I5-2 parts of packing layer I5-3 parts of transition layer
5-4 parts of circulating tank I5-4-1 parts of acid outlet I5-5 parts of acid inlet I
6-1 parts of acid distributor II 6-2 parts of packing layer II 6-3 parts of circulating groove II
8. Gas exhaust inlet 9, circulating pump 5-4-2 and water replenishing port
11. A heat exchanger 11-1, an acid liquor inlet 11-2 and an acid liquor outlet
11-3 parts of water inlet II 11-4 parts of water outlet 6-3-1 parts of water inlet I
6-3-2 parts of acid outlet II 6-3-3 parts of acid inlet II 5-4-3 parts of acid inlet I
6-3-4 parts of acid supplementing port II 5-6 parts of tail gas outlet
Detailed Description
Example 1
An electronic acid waste liquid pretreatment module comprises at least one of a ceramic membrane filter, an active carbon treatment unit and an ion exchange resin unit, wherein the ceramic membrane filter is a container with a built-in microporous ceramic membrane, and the filtering grade of the microporous ceramic membrane is 50 nanometers; the activated carbon treatment unit is a container internally provided with S-grade activated carbon, and is used for adsorbing colored organic matters in the electronic acid waste liquid by utilizing S-grade activated carbon adsorbability to remove the colored organic matters in the electronic acid waste liquid; the ion exchange resin unit is a container with H-shaped exchange resin inside, and metal ions in the electronic acid waste liquid are removed through ion exchange of the H-shaped exchange resin.
An electronic acid waste liquid recovery treatment production line comprises the electronic acid waste liquid pretreatment module, a storage battery sulfuric acid absorption module and a tail gas absorption module;
the electronic acid waste liquid and smoke synergistic treatment method comprises the following steps:
(1) and (4) transporting the electronic acid waste liquid to a factory through a tank wagon, and discharging the electronic acid waste liquid to a waste acid ground tank 1 after the electronic acid waste liquid is qualified in inspection.
Starting a submerged centrifugal pump 1-1 of the waste acid ground tank 1, conveying the electronic acid waste liquid from the top of a waste acid storage tank 7 into the waste acid storage tank 7 through a pipeline, and keeping the liquid level of the waste acid ground tank 1 within a reasonable index range until the electronic acid waste liquid in a tank car or a ton bucket is discharged;
(2) opening an acid discharge valve at the bottom of the waste acid storage tank 7 to enable the electronic acid waste liquid to flow into a waste acid geosyncline 1, simultaneously opening a submerged centrifugal pump 1-1 of the waste acid geosyncline 1, and respectively supplying acid to an existing storage battery sulfuric acid absorption module 5 and a tail gas absorption module 6 after the electronic acid waste liquid is pretreated by an electronic acid waste liquid pretreatment module through a pipeline;
the storage battery sulfuric acid absorption module 5 and the tail gas absorption module 6 are both existing devices, so that the construction cost is saved;
in the process, the liquid level of the waste acid ground tank 1 is kept within a reasonable liquid level index range by adjusting the opening degree of an acid discharging and supplying valve at the bottom of the waste acid storage tank 7.
Before supplying acid to storage battery sulphuric acid absorption module and tail gas absorption module, because the electronic acid waste liquid contains solid mechanical impurity, coloured organic matter and heavy metal ion, liquid is yellowish, consequently carries out earlier stage treatment, and the processing procedure of electronic acid waste liquid in the preliminary treatment module is as follows:
the electronic acid waste liquid sequentially passes through the ceramic membrane filter 2, the activated carbon treatment unit 3 and the ion exchange resin unit 4, and specifically comprises the following steps: the filtering grade of the microporous ceramic membrane filter is 50 nanometers to remove solid mechanical impurities in the electronic acid waste liquid, colored organic matters in the electronic acid waste liquid are adsorbed by S-grade activated carbon adsorption, the colored organic matters in the electronic acid waste liquid are removed, and metal ions in the electronic acid waste liquid are removed through ion exchange of H-type exchange resin, so that the filtered electronic acid waste liquid does not contain the solid mechanical impurities, the organic matters and the heavy metal ions and is colorless liquid, and no bubbles are generated in an ion exchange resin unit in the reaction process.
(3) The treated electronic acid waste liquid and the flue gas are recovered cooperatively
The storage battery sulfuric acid absorption module 5 sequentially comprises an acid distributor I5-1, a packing layer I5-2, a transition layer 5-3 and a circulating tank I5-4 from top to bottom, the electronic acid waste liquid enters the circulating tank I5-4 from an acid supplementing port I5-4-3 on one side of the circulating tank I5-4, 98% sulfuric acid with a certain liquid level height is arranged in the circulating tank I5-4, an acid outlet I5-4-1 is formed in the bottom of the circulating tank I5-4, a liquid level sensor and a concentration sensor are arranged in the circulating tank I5-4, when the 98% sulfuric acid in the circulating tank I5-4 reaches the certain liquid level height, the sulfuric acid is discharged through the acid outlet I5-4-1, and the sulfuric acid is pumped into the storage battery sulfuric acid absorption module 5 from an acid inlet I5-5 on one side of the top of the storage battery sulfuric acid absorption module 5 to achieve internal circulation or enters a metering tank to enable the circulating tank I5-4 to enable the circulating tank I5 -4, the acid liquid is always maintained at a certain liquid level and concentration;
the tail gas absorption module 6 sequentially comprises an acid separator II 6-1, a packing layer II 6-2 and a circulating tank II 6-3 from top to bottom, the electronic acid waste liquid enters the circulating tank II 6-3 from an acid supplementing port II 6-3-4 on one side of the circulating tank II 6-3, 30% sulfuric acid is arranged in the circulating tank II 6-3, an acid outlet II 6-3-2 is arranged on one side of the circulating tank II 6-3 close to the bottom of the circulating tank II 6-3, when the acid liquid in the circulating tank II 6-3 reaches a certain liquid level height, the acid liquid is pumped into the tail gas absorption module 6 from the acid inlet II 6-3-3 through a circulating pump 9 or pumped into the storage battery sulfuric acid absorption module 5 from the acid inlet I5-5 on one side of the top of the storage battery sulfuric acid absorption module 5 to enable the acid liquid in the circulating tank II 6-3 to be always maintained at the certain liquid level height, further, a liquid level sensor and a concentration sensor are arranged in the circulating tank II 6-3, a water inlet I6-3-1 is arranged on one side of the circulating tank II 6-3, and when the concentration sensor detects that the concentration of the acid liquor in the circulating tank II 6-3 is greater than 30%, the circulating pump 9 is automatically opened, desalted water is added into the circulating tank II 6-3 from the water inlet I6-3-1, so that the concentration of the acid liquor is controlled to be about 30%;
The top of the storage battery sulfuric acid absorption module 5 is provided with a tail gas outlet 5-6, the tail gas outlet 5-6 is communicated with a gas exhaust inlet 8 at one side of a circulating groove II 6-3 through a pipeline, the tail gas containing a trace amount of sulfur dioxide after reaction in the storage battery sulfuric acid absorption module 5 is discharged from the tail gas outlet 5-6 and enters the circulating groove II 6-3 through the pipeline and the gas exhaust inlet 8 at one side of the circulating groove II 6-3, acid liquid entering the tail gas absorption module 6 from the acid inlet II 6-3-3 passes through an acid divider II 6-1 to be uniformly distributed, flows through a packing layer II 6-2 in a tower by virtue of self gravity to reversely contact with the tail gas, a small amount of sulfur dioxide reacts with 1.5 percent of hydrogen peroxide contained in the electronic acid waste liquid to generate sulfuric acid, and a large amount of heat is generated in the process, when the concentration of the reacted acid liquor is more than 30%, desalted water is added into the circulating tank II 6-3 through the water inlet I6-3-1 to control the concentration of the acid liquor to be about 30%, and the reaction chemical formula of the sulfur dioxide and hydrogen peroxide is as follows: SO (SO) 2 +H 2 O 2 ＝H 2 SO 4 ；
Furthermore, the device also comprises a plurality of electromagnetic valves for controlling the switching state and the opening degree and control terminals, wherein the electromagnetic valves are distributed on each pipeline, and the control terminals are electrically connected with the submerged centrifugal pump 1-1, the liquid level sensor 1-2, the circulating pump 9, the waste acid pump, the concentration sensor and the electromagnetic valves and control all the components.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Although an embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. The utility model provides an sour waste liquid pretreatment module of electron which characterized in that: the device comprises at least one of a ceramic membrane filter, an active carbon treatment unit and an ion exchange resin unit, wherein the ceramic membrane filter is a container with a built-in microporous ceramic membrane, and the filtration grade of the microporous ceramic membrane is 50 nanometers; the active carbon treatment unit is a container with built-in S-grade active carbon; the ion exchange resin unit is a container with H-shaped exchange resin inside.
2. The utility model provides an electron acid waste liquid recovery processing production line which characterized in that: the device comprises the electronic acid waste liquid pretreatment module as claimed in claim 1, and a storage battery sulfuric acid absorption module and a tail gas absorption module, wherein a discharge port of the electronic acid waste liquid pretreatment module is respectively communicated with an acid supplementing port I of the storage battery sulfuric acid absorption module and an acid supplementing port II of the tail gas absorption module through pipelines.
3. The electronic acid waste liquid recovery processing production line of claim 2, characterized in that: gas exhaust inlets are formed in the transition layer of the storage battery sulfuric acid absorption module and one side of the circulating groove II of the tail gas absorption module, flue gas enters the transition layer from the gas exhaust inlets, acid liquid in the circulating groove II is pumped into the tail gas absorption module from one side of the acid inlet II, the acid liquid is uniformly distributed through the acid distributor II, the acid liquid flows through the packing layer II in the tower by means of self gravity and is in reverse contact with the flue gas, and the reacted acid liquid returns to the circulating groove II; the top of the storage battery sulfuric acid absorption module is provided with a tail gas outlet which is communicated with a gas exhaust inlet on one side of the circulating tank II through a pipeline; acid liquor in the circulation tank I is squeezed into the storage battery sulfuric acid absorption module from the acid inlet I, and after the acid liquor is uniformly distributed through the acid distributor I, the acid liquor flows through the packing layer I in the tower by means of self gravity and reversely contacts with tail gas discharged from the storage battery sulfuric acid absorption module, and the reacted acid liquor falls back to the circulation tank I.
4. The electronic acid waste liquid recovery processing production line of claim 2 or 3, characterized in that: a liquid level sensor is arranged in the circulation tank I, when the sulfuric acid in the circulation tank I reaches a certain liquid level height, the sulfuric acid is discharged through an acid outlet I, and the sulfuric acid is injected into the storage battery sulfuric acid absorption module from an acid inlet I on one side of the top of the storage battery sulfuric acid absorption module through a power device to realize internal circulation or enters a metering tank to enable the acid liquid in the circulation tank I to be maintained at the certain liquid level height all the time;
and a liquid level sensor is arranged in the circulating tank II, and when the acid liquid in the circulating tank II reaches a certain liquid level height, the acid liquid is pumped into the tail gas absorption module from one side of the acid inlet II through a power device or is collected, so that the acid liquid in the circulating tank II is always maintained at the certain liquid level height.
5. The electronic acid waste liquid recycling and treating production line according to claim 2 or 3, characterized in that: this production line still includes spent acid geosyncline, be equipped with level sensor in the spent acid geosyncline, in the spent acid storage tank was carried from spent acid storage tank top to the electronic acid waste liquid of submerged centrifugal pump in with spent acid geosyncline through the pipeline, spent acid storage tank bottom one side is equipped with puts sour valve.
6. The electronic acid waste liquid recovery processing production line of claim 2 or 3, characterized in that: 98% sulfuric acid is arranged in the circulation tank I, and 30% sulfuric acid is arranged in the circulation tank II;
and a concentration sensor is arranged in the circulating tank II, and when the concentration of the acid liquor in the circulating tank II detected by the concentration sensor is more than 30%, a power device is automatically started to add desalted water into the circulating tank II from the water inlet I, so that the concentration of the acid liquor is controlled at 30%.
7. The electronic acid waste liquid recovery processing production line of claim 6, characterized in that: the device further comprises 1 heat exchanger, wherein an acid liquid inlet, an acid liquid outlet, a water inlet II and a water outlet II are formed in the heat exchanger, the acid liquid inlet is communicated with an acid outlet I at the bottom of the circulating tank I through a pipeline, the acid liquid outlet is communicated with an acid outlet pipeline communicated with an acid outlet I at one side of the storage battery sulfuric acid absorption module through a pipeline, and the water inlet II is communicated with the water tank through an outer pipe.
8. The electronic acid waste liquid recovery processing production line of claim 7, characterized in that: the device also comprises a plurality of electromagnetic valves and control terminals, wherein the electromagnetic valves are used for controlling the on-off state and the opening degree and are distributed on each pipeline, and the control terminals are electrically connected with the submerged centrifugal pump, the liquid level sensor, the circulating pump, the waste acid pump, the concentration sensor and the electromagnetic valves.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114426264A (en) * | 2021-12-24 | 2022-05-03 | 天津环渤新材料有限公司 | Electronic acid waste liquid pretreatment module and electronic acid waste liquid recovery treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114426264A (en) * | 2021-12-24 | 2022-05-03 | 天津环渤新材料有限公司 | Electronic acid waste liquid pretreatment module and electronic acid waste liquid recovery treatment method |
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