Recovery acid treatment device for formation tank

Abstract

The utility model relates to the technical field of formation groove, especially to a kind of recovery acid treatment device for formation groove, the device is equipped with liquid inlet component, storage component, sterilization component and liquid outlet component, liquid inlet component includes liquid inlet pipeline and first filter piece, the both ends of liquid inlet pipeline are connected with recovery acid preparation equipment and storage component respectively, and first filter piece is installed on liquid inlet pipeline;The input end of sterilization component is connected with the bottom of storage component, and the output end of sterilization component is connected with the top of storage component, the input end of liquid outlet component is connected with the bottom of storage component, and output end is connected with formation groove;In this way, white flocculus in recovery acid is filtered out when entering storage component by first filter piece;Meanwhile, sterilization component extracts recovery acid from the bottom of storage component, and then the sterilized recovery acid is backflowed to the top of storage component, to reduce the influence of white flocculus and bacterial pollution on the surface of electrode foil, so as to improve the quality of electrode foil finished product.

Description

Technical Field

[0001] This utility model relates to the field of chemical formation tank technology, and in particular to a chemical formation tank acid recovery treatment device. Background Technology

[0002] Electrode foil is a key material in the manufacture of aluminum electrolytic capacitors, and its processing mainly includes two stages: etching and formation. The formation process takes place in a formation tank containing a specific acidic electrolyte, where a hydrated oxide film, acting as a dielectric, is formed on the surface of the aluminum foil through electrochemical action. During formation, the electrolyte in the formation tank gradually deteriorates due to acid consumption and the dissolution of aluminum ions, forming aluminum-containing waste acid. To achieve resource recycling and reduce environmental treatment costs, this waste acid needs to be treated in acid recovery equipment, regenerated through processes such as evaporation and crystallization, and then mixed with fresh acid and / or pure water according to the process requirements of the formation process to generate recycled acid that can be reused in the formation process.

[0003] However, two problems often arise in the preparation and storage of recycled acid: First, white flocculent matter is generated in the recycled acid, mainly composed of aluminum hydroxide colloids formed due to pH changes during the recovery and remixing of aluminum ions from waste acid. Second, the temperature maintained in the recycled acid storage tank is ideal for microbial growth, and the residual organic matter in the recycled acid provides the necessary nutrients for microbial reproduction, leading to the proliferation of bacteria, primarily acidophilic bacteria, during storage. The aluminum hydroxide flocculent matter can clog equipment pipes and affect the purity of the recycled acid, while bacterial metabolism can contaminate it. When recycled acid containing white flocculent matter and bacteria is reused in electrode foil production, it can cause defects on the surface of the electrode foil, resulting in a reduction in the quality of the finished electrode foil. Utility Model Content

[0004] In view of this, it is necessary to provide a recovery acid treatment device for a formation tank, which reduces the content of white flocculent matter and bacteria in the recovery acid, thereby reducing the impact of white flocculent matter and bacteria on the electrode foil surface and improving the quality of the finished electrode foil.

[0005] This utility model provides a recovered acid treatment device for a formation tank, including a liquid inlet component, a storage component, a sterilization component, and a liquid outlet component. The liquid inlet component includes an inlet pipe and a first filter element. The two ends of the inlet pipe are respectively connected to the recovered acid preparation equipment and the storage component to transport the recovered acid produced by the recovered acid preparation equipment to the storage component. The first filter element is installed on the inlet pipe to filter out white flocculent matter in the recovered acid. The storage component is used to store the recovered acid. The input end of the sterilization component is connected to the bottom of the storage component to extract the recovered acid from the bottom of the storage component and sterilize it. The output end of the sterilization component is connected to the top of the storage component to return the sterilized recovered acid to the top of the storage component. The input end of the liquid outlet component is connected to the bottom of the storage component, and the output end is connected to the formation tank to transport the treated recovered acid in the storage component to the formation tank for use.

[0006] Preferably, the sterilization assembly includes a first delivery pipe, a pump, a second delivery pipe, a sterilizer, and a third delivery pipe. The two ends of the first delivery pipe are connected to the bottom of the storage assembly and the input end of the pump. The two ends of the second delivery pipe are connected to the output end of the pump and the sterilizer, so that the pump can extract recovered acid from the bottom of the storage assembly and deliver it to the sterilizer. The sterilizer is equipped with at least one first sterilizing lamp to sterilize the recovered acid flowing through the sterilizer. The two ends of the third delivery pipe are connected to the top of the sterilizer and the storage assembly to return the sterilized recovered acid to the top of the storage assembly.

[0007] Preferably, the sterilization assembly further includes a maintenance pipe, a first maintenance valve, a second maintenance valve, and a third maintenance valve. The two ends of the maintenance pipe are connected to the second delivery pipe and the third delivery pipe, respectively, forming a bypass pipe that can bypass the sterilizer. The first maintenance valve is installed on the second delivery pipe and located between the connection point of the second delivery pipe and the maintenance pipe and the sterilizer. The second maintenance valve is installed on the third delivery pipe and located between the connection point of the third delivery pipe and the maintenance pipe and the sterilizer. The third maintenance valve is installed on the maintenance pipe to control the flow path of the recovered acid by opening and closing the first, second, and third maintenance valves.

[0008] Preferably, the storage assembly includes a storage tank and at least one second germicidal lamp. The two ends of the liquid inlet pipe are respectively connected to the acid recovery preparation equipment and the storage tank to transport the recovered acid produced by the acid recovery preparation equipment to the storage tank for storage. Each second germicidal lamp is installed on the top surface inside the storage tank to sterilize the recovered acid in the storage tank.

[0009] Preferably, the liquid inlet assembly further includes a liquid inlet valve, which is installed on the liquid inlet pipeline and located between the acid recovery preparation equipment and the first filter element, to control the delivery of the recovered acid to the storage tank.

[0010] Preferably, the liquid outlet assembly includes a liquid outlet pipeline, a second filter element, and a liquid outlet valve. The input end of the liquid outlet pipeline is connected to the bottom of the storage assembly, and the output end is used to connect to the formation tank to transport the treated recovered acid in the storage assembly to the formation tank. The second filter element is installed on the liquid outlet pipeline to filter out residual white flocculent matter in the treated recovered acid. The liquid outlet valve is installed on the liquid outlet pipeline and located between the storage tank and the second filter element to control the transport of the treated recovered acid to the formation tank.

[0011] Preferably, the liquid outlet assembly further includes a liquid outlet interface and a filter cartridge. The liquid outlet interface is fixedly installed at the liquid inlet of the formation tank. The filter cartridge is detachably fitted inside the liquid outlet interface. The filter cartridge has evenly distributed filter holes on its wall to filter out the recovered acid before it enters the formation tank and to intercept any residual white flocculent matter. The output end of the liquid outlet pipeline is detachably inserted into the filter cartridge, and the liquid outlet pipeline is a flexible hose at this connection section to facilitate the disassembly and assembly of the filter cartridge during maintenance.

[0012] Preferably, the sterilization component further includes a control unit, which is electrically connected to the inlet valve, the outlet valve, and the pump. The control unit is used to manage the liquid level of the recovered acid in the storage tank by coordinating the opening and closing of the inlet valve and the outlet valve, so as to determine a batch of recovered acid to be processed. For each batch, the control unit controls the pump to work continuously for a preset sterilization time to ensure that the batch of recovered acid can be fully sterilized.

[0013] The aforementioned acid recovery treatment device for the formation tank includes an inlet assembly, a storage assembly, a sterilization assembly, and an outlet assembly. The inlet assembly includes an inlet pipe and a first filter element. The two ends of the inlet pipe are connected to the acid recovery preparation equipment and the storage assembly, respectively, to transport the recovered acid produced by the acid recovery preparation equipment to the storage assembly. The first filter element is installed on the inlet pipe to filter out white flocculent matter in the recovered acid. The storage assembly stores the recovered acid. The input end of the sterilization assembly is connected to the bottom of the storage assembly to extract the recovered acid from the bottom of the storage assembly and sterilize it. The output end of the sterilization assembly is connected to the top of the storage assembly to return the sterilized recovered acid to the top of the storage assembly. The outlet assembly… The input end of the filter element is connected to the bottom of the storage component, and the output end is connected to the formation tank to transport the treated recovered acid from the storage component to the formation tank for use. In this way, the white flocculent material in the recovered acid is filtered out by the first filter element when it enters the storage component, which effectively avoids the white flocculent material from clogging the equipment pipeline and adversely affecting the purity of the acid. At the same time, the sterilization component extracts the recovered acid from the bottom of the storage component, sterilizes it, and then returns the sterilized recovered acid to the top of the storage component, realizing the cyclic sterilization of the recovered acid in the storage component. This significantly reduces the bacterial content, thereby reducing the impact of white flocculent material and bacterial contamination on the surface of the electrode foil and improving the quality of the finished electrode foil. Attached Figure Description

[0014] Figure 1 This is a perspective view of the acid recovery treatment apparatus for the chemical formation tank of this application.

[0015] Figure 2 This is a perspective view of the sterilization component of this application.

[0016] Figure 3 This is a cross-sectional view of the storage component of this application.

[0017] Figure 4 This is a perspective view of the liquid dispensing component of this application.

[0018] Figure 5 This is a cross-sectional view of the liquid outlet and filter cartridge of this application.

[0019] In the diagram: 10 for acid recovery treatment in the formation tank, 20 for liquid inlet assembly, 21 for liquid inlet pipeline, 22 for first filter element, 23 for liquid inlet valve, 30 for storage assembly, 31 for storage tank, 32 for second sterilizing lamp, 40 for sterilizing assembly, 41 for first delivery pipe, 42 for liquid pump, 43 for second delivery pipe, 44 for sterilizer, 45 for third delivery pipe, 46 for maintenance pipe, 47 for first maintenance valve, 48 for second maintenance valve, 49 for third maintenance valve, 50 for liquid outlet assembly, 51 for liquid outlet pipeline, 52 for second filter element, 53 for liquid outlet valve, 54 for liquid outlet interface, and 55 for filter cartridge. Detailed Implementation

[0020] The technical solutions and effects of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please refer to Figure 1 This utility model provides a recovered acid treatment device 10 for a chemical formation tank, including a liquid inlet component 20, a storage component 30, a sterilization component 40, and a liquid outlet component 50. The liquid inlet component 20 includes a liquid inlet pipe 21 and a first filter element 22. The two ends of the liquid inlet pipe 21 are respectively connected to the recovered acid preparation equipment and the storage component 30 to transport the recovered acid produced by the recovered acid preparation equipment to the storage component 30. The first filter element 22 is installed on the liquid inlet pipe 21 to filter out white flocculent matter in the recovered acid. The storage component 30 is used to store the recovered acid. The input end of the sterilization component 40 is connected to the bottom of the storage component 30 to extract the recovered acid from the bottom of the storage component 30 and sterilize it. The output end of the sterilization component 40 is connected to the top of the storage component 30 to discharge the sterilized recovered acid. The acid is returned to the top of the storage component 30. The input end of the liquid outlet component 50 is connected to the bottom of the storage component 30, and the output end is connected to the formation tank, so as to transport the treated recovered acid in the storage component 30 to the formation tank for use. In this way, the white flocculent material in the recovered acid is filtered out by the first filter element 22 when it enters the storage component 30, which effectively avoids the white flocculent material from clogging the equipment pipeline and adversely affecting the purity of the acid. At the same time, the sterilization component 40 extracts the recovered acid from the bottom of the storage component 30, sterilizes it, and then returns the sterilized recovered acid to the top of the storage component 30, realizing the cyclic sterilization of the recovered acid in the storage component 30. This significantly reduces the bacterial content, thereby reducing the impact of white flocculent material and bacterial contamination on the surface of the electrode foil and improving the quality of the finished electrode foil.

[0022] Please refer to Figure 2 Furthermore, the sterilization component 40 includes a first delivery pipe 41, a pump 42, a second delivery pipe 43, a sterilizer 44, and a third delivery pipe 45. The two ends of the first delivery pipe 41 are connected to the bottom of the storage component 30 and the input end of the pump 42. The two ends of the second delivery pipe 43 are connected to the output end of the pump 42 and the sterilizer 44, so that the pump 42 can extract the recovered acid from the bottom of the storage component 30 and deliver it to the sterilizer 44. The sterilizer 44 is equipped with at least one first sterilizing lamp to sterilize the recovered acid flowing through the sterilizer 44. The two ends of the third delivery pipe 45 are connected to the sterilizer 44 and the top of the storage component 30, so that the sterilized recovered acid can be returned to the top of the storage component 30. Specifically, this connection method realizes a cycle of extracting recovered acid from the bottom of the storage component 30, sterilizing the recovered acid, and returning it from the top of the storage component 30, ensuring that all the recovered acid in the storage component 30 can be fully sterilized and effectively reducing bacterial contamination of the recovered acid.

[0023] Please refer to Figure 2 Furthermore, the sterilization assembly 40 also includes a maintenance pipe 46, a first maintenance valve 47, a second maintenance valve 48, and a third maintenance valve 49. The two ends of the maintenance pipe 46 are connected to the second delivery pipe 43 and the third delivery pipe 45, respectively, forming a bypass pipe that can bypass the sterilizer 44. The first maintenance valve 47 is installed on the second delivery pipe 43 and is located between the connection point of the second delivery pipe 43 and the maintenance pipe 46 and the sterilizer 44. The second maintenance valve 48 is installed on the third delivery pipe 45 and is located between the connection point of the third delivery pipe 45 and the maintenance pipe 46 and the sterilizer 44. The third maintenance valve 49 is installed on the maintenance pipe 46. The flow path of the recovered acid is controlled by opening and closing the first maintenance valve 47, the second maintenance valve 48, and the third maintenance valve 49. Specifically, under normal sterilization conditions, the first maintenance valve 47 and the second maintenance valve 48 are open, and the third maintenance valve 49 is closed, allowing the recovered acid to flow through the sterilizer 44 for sterilization. Under maintenance conditions, the first maintenance valve 47 and the second maintenance valve 48 are closed, and the third maintenance valve 49 is open, allowing the recovered acid to bypass the sterilizer 44 through a bypass pipeline. This allows the sterilizer 44 to be maintained or replaced without interrupting the flow of the recovered acid, thus ensuring that the sterilization component 40 can maintain the circulation of the recovered acid even in the event of a malfunction.

[0024] Please refer to Figure 3 Furthermore, the storage component 30 includes a storage tank 31 and at least one second germicidal lamp 32. The two ends of the liquid inlet pipe 21 are respectively connected to the acid recovery preparation equipment and the storage tank 31 to transport the recovered acid produced by the acid recovery preparation equipment to the storage tank 31 for storage. Each second germicidal lamp 32 is installed on the top surface inside the storage tank 31 to sterilize the recovered acid in the storage tank 31. Specifically, the second germicidal lamp 32 continuously irradiates the surface of the recovered acid in the storage tank 31, thereby inhibiting the growth of bacteria in the storage tank 31.

[0025] In this embodiment, both the first germicidal lamp and the second germicidal lamp 32 are ultraviolet germicidal lamps. Ultraviolet light can destroy the deoxyribonucleic acid (DNA) structure of bacteria and viruses, causing them to lose their activity or die, thereby achieving a sterilization effect. This sterilization method does not require the addition of chemical agents, avoids secondary pollution, and is suitable for sterilizing recycled acid.

[0026] In this embodiment, since the effectiveness of ultraviolet sterilization depends on the total dose of ultraviolet radiation received by the bacteria, which is determined by the product of irradiation intensity and irradiation time, in order to ensure that an effective sterilization dose can be achieved, this application has coordinated the flow rate of the pump 42 and the capacity of the sterilizer 44. For example, by designing the internal flow channel of the sterilizer 44 as a narrow, meandering path to increase the flow rate, and selecting an ultraviolet lamp of appropriate power to ensure the radiation intensity, the flow rate of the pump 42 is controlled at a low flow rate that matches the flow channel volume and the target radiation dose, so as to ensure that the recovered acid can obtain sufficient exposure time and radiation intensity when it flows through the sterilizer once. In addition, the cyclic sterilization process allows the recovered acid to pass through the sterilizer 44 multiple times, further accumulating the radiation dose, so as to avoid the problem of insufficient sterilization that may be caused by the recovered acid being in a flowing state.

[0027] The time for the recovered acid to flow through the sterilizer 44 is not less than a preset time. This preset time is determined based on the radiation dose required for ultraviolet sterilization. The effectiveness of ultraviolet sterilization depends on the total ultraviolet dose received by the bacteria, which is the product of the ultraviolet irradiation intensity and the irradiation time.

[0028] Furthermore, the liquid inlet assembly 20 also includes a liquid inlet valve 23, which is installed on the liquid inlet pipeline 21 and located between the acid recovery preparation equipment and the first filter element 22 to control the delivery of the recovered acid to the storage tank 31.

[0029] Please refer to Figure 4 Furthermore, the liquid outlet assembly 50 includes an outlet pipe 51, a second filter element 52, and an outlet valve 53. The inlet end of the outlet pipe 51 is connected to the bottom of the storage assembly 30, and the outlet end is used to connect to the formation tank to transport the treated recovered acid in the storage assembly 30 to the formation tank. The second filter element 52 is installed on the outlet pipe 51 to filter out residual white flocculent matter in the treated recovered acid. The outlet valve 53 is installed on the outlet pipe 51 and located between the storage tank 31 and the second filter element 52 to control the transport of the treated recovered acid to the formation tank. Specifically, the recovered acid may generate new white flocculent matter in the storage tank 31 due to pH changes, and some flocculent matter may not be completely filtered out by the first filter element 22. Therefore, the second filter element 52 will filter the recovered acid again to remove any residual white flocculent matter.

[0030] In this embodiment, both the first filter element 22 and the second filter element 52 are provided with at least one filter screen to filter out the white flocculent matter in the recovered acid. Specifically, the filter screen is made of a corrosion-resistant material, such as propylene or 316L stainless steel, to withstand the corrosive environment of the recovered acid and ensure sufficient mechanical strength. Its mesh size is not less than 4000 mesh to ensure effective interception of aluminum hydroxide colloidal particles formed in the recovered acid.

[0031] Please refer to Figure 4 and Figure 5 Furthermore, the liquid outlet assembly 50 also includes a liquid outlet interface 54 and a filter cartridge 55. The liquid outlet interface 54 is fixedly installed at the liquid inlet of the formation tank. The filter cartridge 55 is detachably fitted inside the liquid outlet interface 54. The filter cartridge 55 has evenly spaced filter holes on its wall to filter out the recovered acid before it enters the formation tank and to trap any remaining white flocculent matter. The output end of the liquid outlet pipe 51 is detachably inserted into the filter cartridge 55. The liquid outlet pipe 51 is a flexible hose at this connection section to facilitate the disassembly and assembly of the filter cartridge 55 during maintenance. Specifically, the filter cartridge 55 is fixed inside the liquid outlet interface 54 by a threaded connection or a snap-fit ​​method, allowing the filter cartridge 55 to be disassembled for cleaning or replacement periodically to prevent the filter holes from becoming clogged due to colloid accumulation. The flexible hose design of the liquid outlet pipe 51 allows for easy insertion and removal during maintenance, reducing maintenance time and difficulty.

[0032] Furthermore, the sterilization component 40 also includes a control unit, which is electrically connected to the inlet valve 23, the outlet valve 53, and the pump 42. The control unit manages the level of the recovered acid in the storage tank 31 by coordinating the opening and closing of the inlet valve 23 and the outlet valve 53 to determine the processing batch of recovered acid. For each processing batch, the control unit controls the pump 42 to operate continuously for a preset sterilization time to ensure that the batch of recovered acid undergoes sufficient sterilization. Specifically, when the recovered acid preparation equipment delivers a new batch of recovered acid to the storage tank 31, the control unit opens the inlet valve... The liquid valve 23 is closed, and the liquid outlet valve 53 is closed until the liquid level in the storage tank 31 reaches the set upper limit of the processing liquid level. Then, the control unit closes the liquid inlet valve 23 to temporarily isolate the storage tank 31 from the outside world, and at the same time starts the liquid pump 42 to start the sterilization component 40 to work and continuously circulate and sterilize the batch of recovered acid for the preset sterilization time. After the preset sterilization time is reached, the control unit opens the liquid outlet valve 53 to transport the batch of qualified recovered acid to the formation tank for use, thereby ensuring that each batch of recovered acid entering the formation tank has undergone a sufficient and uniform sterilization process.

[0033] In this embodiment, at least two level sensors are evenly arranged in the storage tank 31; the control unit is a control panel located near the acid recovery treatment device 10 for the formation tank, for example, an integrated system of an industrial flat panel computer and a programmable logic controller; the control panel is electrically connected to the inlet valve 23, the outlet valve 53, the pump 42, and the level sensors in the storage tank 31 via wired or wireless means to receive sensor signals, send control commands, and coordinate the orderly operation of each component. The operator monitors the operating status of the acid recovery treatment device 10 for the formation tank through the control panel. The specific operation procedure is as follows:

[0034] 1. The operator initiates the liquid inlet process via the control panel. The control panel then issues an opening command to the inlet valve 23, while ensuring that the outlet valve 53 is closed. The recovered acid produced by the recovered acid preparation equipment is pumped to the inlet pipeline 21, flows through the first filter element 22, and enters the storage tank 31. During this process, the first filter element 22 effectively removes the white flocculent matter from the recovered acid. Simultaneously, the control panel displays the real-time liquid level of the storage tank 31 monitored by the level sensor. When the liquid level reaches the preset upper limit of the processing liquid level, the operator issues a stop liquid inlet command via the control panel, and the inlet valve 23 closes to seal the batch of recovered acid within the storage tank 31.

[0035] 2. The operator sets the preset sterilization time required for this process on the control panel and instructs the system to start the sterilization process. The control panel then activates the pump 42 and the sterilizer 44. The pump 42 draws recovered acid from the bottom of the storage tank 31 and pumps it into the sterilizer 44 through the first delivery pipe 41 and the second delivery pipe 43. The recovered acid flows through the first sterilizing lamp inside the sterilizer 44 and is irradiated with ultraviolet light, completing the sterilization process. Subsequently, the sterilized recovered acid is returned to the top of the storage tank 31 through the third delivery pipe 45. This cycle continues, and the timer on the control panel begins counting down to ensure that all recovered acid in the storage tank 31 receives sufficient and uniform sterilization treatment.

[0036] 3. When the sterilization timer on the control panel ends, the operator instructs the system to end sterilization and start the liquid discharge process. The control panel then stops the pump 42 and opens the discharge valve 53. The processed recovered acid in the storage tank 31 flows to the formation tank via the discharge pipeline 51. During the discharge process, the recovered acid undergoes two fine filtrations: passing through the second filter element 52 on the discharge pipeline 51 and the filter cartridge 55 installed at the discharge interface 54. This removes any remaining white flocculent matter, ensuring that the recovered acid entering the formation tank is clean and meets standards, thereby guaranteeing the production quality of the electrode foil. The operator monitors the liquid level in the storage tank 31 via the control panel until it reaches a low level, then instructs the operator to close the discharge valve 53, completing the entire batch processing.

[0037] When the sterilizer requires maintenance, the operator can switch the sterilization process to bypass mode via the control panel. The control panel will close the first maintenance valve 47 and the second maintenance valve 48, while simultaneously opening the third maintenance valve 49. This operation creates a bypass pipeline via the maintenance pipe 46, allowing the recovered acid to circulate around the sterilizer 44 under the drive of the pump 42. In this mode, the operator can safely perform offline maintenance or replacement of the sterilizer 44, while the system still maintains the circulation of recovered acid between the storage tank 31 and the pipeline, avoiding production interruptions.

[0038] Example 1: Working process of acid recovery treatment device 10 for chemical formation tank

[0039] 1. The recovered acid produced by the recovered acid preparation equipment flows into the storage tank 31 from the inlet pipe 21. At this time, under the control of the control unit, the inlet valve 23 is opened and the outlet valve 53 is closed. Before entering the storage tank 31, the recovered acid first flows through the first filter element 22 on the inlet pipe 21 to filter out most of the white flocculent matter.

[0040] 2. When the level of the recovered acid in the storage tank 31 reaches the preset upper limit of the processing level, the control unit closes the inlet valve 23 to isolate the batch of recovered acid in the storage tank 31; then, the control unit starts the pump 42 to circulate and sterilize the recovered acid in the storage tank 31.

[0041] 3. The pump 42 pumps the recovered acid at the bottom of the storage tank 31 into the sterilizer 44 through the first delivery pipe 41 and the second delivery pipe 43; when the recovered acid flows through the sterilizer 44, it is continuously irradiated by the first germicidal lamp inside to reduce the number of bacteria inside.

[0042] 4. After the control unit maintains the cyclic sterilization process for the preset sterilization time, it opens the outlet valve 53 to transport the qualified recovered acid to the formation tank. During the discharge process, the recovered acid passes through the second filter element 52 on the outlet pipeline 51 for secondary filtration and the filter cylinder 55 at the outlet interface 54 for tertiary filtration to further intercept any trace white flocculent matter that may remain.

[0043] 5. After the liquid supply to the formation tank is completed, the control unit closes the outlet valve 53 to process the next batch of recovered acid. The above is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for recovering acid in a chemical formation tank, characterized in that, The system includes an inlet component, a storage component, a sterilization component, and an outlet component. The inlet component includes an inlet pipe and a first filter element. The two ends of the inlet pipe are connected to the recovered acid preparation equipment and the storage component, respectively, to transport the recovered acid produced by the recovered acid preparation equipment to the storage component. The first filter element is installed on the inlet pipe to filter out white flocculent matter in the recovered acid. The storage component is used to store the recovered acid. The input end of the sterilization component is connected to the bottom of the storage component to extract the recovered acid from the bottom of the storage component and sterilize it. The output end of the sterilization component is connected to the top of the storage component to return the sterilized recovered acid to the top of the storage component. The input end of the outlet component is connected to the bottom of the storage component, and the output end is connected to the formation tank to transport the treated recovered acid in the storage component to the formation tank for use.

2. The acid recovery treatment device for the chemical formation tank as described in claim 1, characterized in that, The sterilization assembly includes a first delivery pipe, a pump, a second delivery pipe, a sterilizer, and a third delivery pipe. The two ends of the first delivery pipe are connected to the bottom of the storage assembly and the input end of the pump. The two ends of the second delivery pipe are connected to the output end of the pump and the sterilizer, so that the pump can extract recovered acid from the bottom of the storage assembly and deliver it to the sterilizer. The sterilizer is equipped with at least one first sterilizing lamp to sterilize the recovered acid flowing through the sterilizer. The two ends of the third delivery pipe are connected to the top of the sterilizer and the storage assembly to return the sterilized recovered acid to the top of the storage assembly.

3. The acid recovery treatment device for the chemical formation tank as described in claim 2, characterized in that, The sterilization assembly also includes a maintenance pipe, a first maintenance valve, a second maintenance valve, and a third maintenance valve. The two ends of the maintenance pipe are connected to the second delivery pipe and the third delivery pipe, respectively, thereby forming a bypass pipeline that can bypass the sterilizer. The first maintenance valve is installed on the second delivery pipe and is located between the connection point of the second delivery pipe and the maintenance pipe and the sterilizer. The second maintenance valve is installed on the third delivery pipe and is located between the connection point of the third delivery pipe and the maintenance pipe and the sterilizer. The third maintenance valve is installed on the maintenance pipe to control the flow path of the recovered acid by opening and closing the first maintenance valve, the second maintenance valve, and the third maintenance valve.

4. The acid recovery treatment device for the chemical formation tank as described in claim 3, characterized in that, The storage assembly includes a storage tank and at least one second germicidal lamp. The two ends of the liquid inlet pipe are respectively connected to the acid recovery preparation equipment and the storage tank to transport the recovered acid produced by the acid recovery preparation equipment to the storage tank for storage. Each second germicidal lamp is installed on the top surface inside the storage tank to sterilize the recovered acid in the storage tank.

5. The acid recovery treatment device for the chemical formation tank as described in claim 4, characterized in that, The liquid inlet assembly also includes a liquid inlet valve, which is installed on the liquid inlet pipeline and located between the acid recovery preparation equipment and the first filter element to control the delivery of the recovered acid to the storage tank.

6. The acid recovery treatment device for the chemical formation tank as described in claim 5, characterized in that, The liquid outlet assembly includes a liquid outlet pipeline, a second filter element, and a liquid outlet valve. The input end of the liquid outlet pipeline is connected to the bottom of the storage assembly, and the output end is used to connect to the formation tank to transport the treated recovered acid in the storage assembly to the formation tank. The second filter element is installed on the liquid outlet pipeline to filter out residual white flocculent matter in the treated recovered acid. The liquid outlet valve is installed on the liquid outlet pipeline and located between the storage tank and the second filter element to control the transport of the treated recovered acid to the formation tank.

7. The acid recovery treatment device for the chemical formation tank as described in claim 6, characterized in that, The liquid outlet assembly also includes a liquid outlet interface and a filter cartridge. The liquid outlet interface is fixedly installed at the liquid inlet of the formation tank. The filter cartridge is detachably fitted inside the liquid outlet interface. The filter cartridge has evenly distributed filter holes on its wall to filter out the recovered acid before it enters the formation tank and to intercept any residual white flocculent matter. The output end of the liquid outlet pipeline is detachably inserted into the filter cartridge, and the liquid outlet pipeline at the output end is a flexible hose to facilitate the disassembly and assembly of the filter cartridge during maintenance.

8. The acid recovery treatment device for the chemical formation tank as described in claim 6, characterized in that, The sterilization component also includes a control unit, which is electrically connected to the inlet valve, the outlet valve, and the pump. The control unit is used to manage the liquid level of the recovered acid in the storage tank by coordinating the opening and closing of the inlet valve and the outlet valve, so as to determine a batch of recovered acid to be processed. For each batch, the control unit controls the pump to work continuously for a preset sterilization time to ensure that the batch of recovered acid can be fully sterilized.

Images