Fluorine and chlorine removal device for smelting waste acid

Abstract

The utility model discloses a fluorine and chlorine removal device for smelting waste acid, which comprises a sedimentation tank connected with a liquid outlet end of a standard waste acid discharge pipe, a first filter connected with the liquid outlet end of the sedimentation tank and used for filtering and removing large-particle impurities and floating objects in supernate of the sedimentation tank; the adjusting pool is connected with the liquid outlet end of the first filter, an adjusting liquid supply box is connected to the adjusting pool and used for adjusting the PH value of the waste acid discharged by the first filter, and a heating piece is arranged in the adjusting pool and used for heating the waste acid in the adjusting pool; the fluorine-chlorine adsorber is connected with the liquid outlet end of the adjusting tank, the liquid outlet end of the fluorine-chlorine adsorber is connected with the second filter, and the fluorine-chlorine adsorber is used for removing small particles and residues in the waste acid discharged by the fluorine-chlorine adsorber; and the ion exchanger is connected with the fluorine-chlorine adsorber and is used for spraying a regenerant to the fluorine-chlorine adsorber so as to adsorb fluorine-chlorine ions on the fluorine-chlorine adsorber. The fluorine and chlorine removal device can improve the fluorine and chlorine removal efficiency and the removal effect of the waste acid, reduce the operation difficulty of equipment and reduce the investment of labor cost.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting waste acid defluorination and dechlorination, in particular to a device for smelting waste acid defluorination and dechlorination. Background Art

[0002] A large amount of waste acid is generated during the non-ferrous metal smelting process. Its main characteristics are high arsenic and high acid, multiple metal components, complex water quality, high content of toxic and harmful elements, and the coexistence of sulfate ions, fluoride ions, chloride ions, etc. It is a typical difficult-to-treat mine and metallurgical industrial wastewater. Direct discharge of high-fluoride and high-chloride waste acid wastewater will seriously pollute the environment, while reuse will cause corrosion to boilers and pipelines, affecting safe production. It needs to remove fluorine and chlorine before reuse. Although the existing smelting waste acid fluorine and chlorine removal equipment can achieve the removal of fluorine and chlorine in waste acid, it often has the defects of low removal efficiency, poor removal effect and complex operation.

[0003] Therefore, it is urgent to research and develop a device for smelting waste acid defluorination and dechlorination that can automatically remove fluorine and chlorine from waste acid and improve the removal effect and efficiency, so as to solve the above technical defects. Summary of the Invention

[0004] The purpose of the utility model is to provide a device for smelting waste acid defluorination and dechlorination, which can improve the fluorine and chlorine removal efficiency and effect of waste acid, reduce the operation difficulty of the equipment, and reduce the investment in labor costs.

[0005] In order to achieve the above purpose, a device for smelting waste acid defluorination and dechlorination provided by the utility model has the following specific implementation schemes:

[0006] A device for smelting waste acid defluorination and dechlorination includes:

[0007] A sedimentation tank is connected to the liquid outlet end of the waste acid up-to-standard discharge pipe, and the liquid outlet end of the sedimentation tank is connected with a first filter, which is used to filter and remove large particle impurities and floating substances in the supernatant of the sedimentation tank;

[0008] An adjustment tank is connected to the liquid outlet end of the first filter. An adjustment liquid supply tank is connected to the adjustment tank, which is used to adjust the pH value of the waste acid discharged from the first filter. And a heating element is arranged in the adjustment tank, which is used to heat the waste acid in the adjustment tank;

[0009] A fluorine and chlorine adsorber is connected to the liquid outlet end of the adjustment tank, and the liquid outlet end of the fluorine and chlorine adsorber is connected with a second filter, which is used to remove fine particles and residues in the waste acid discharged from the fluorine and chlorine adsorber;

[0010] An ion exchanger is connected to the fluorine and chlorine adsorber, which is used to spray a regenerant onto the fluorine and chlorine adsorber to adsorb fluorine and chlorine ions on the fluorine and chlorine adsorber.

[0011] A fluorine and chlorine removal device for smelting waste acid of the present utility model, compared with the prior art, receives waste acid through a sedimentation tank, allows the waste acid to stand and precipitate, transports the supernatant to a first filter to filter out large particles and floating substances, transports the filtered waste acid to an adjustment tank to heat and adjust the pH value, and the waste acid after pH adjustment enters a fluorine and chlorine adsorber to remove fluorine and chlorine ions. After the removal of fluorine and chlorine ions from the waste acid, it enters a second filter to filter out fine particles and residues in the waste acid, improving the treatment quality of the waste acid. And an ion exchanger is used to spray a regenerant onto the fluorine and chlorine adsorber to adsorb the fluorine and chlorine ions on the fluorine and chlorine adsorber, realizing the recycling of the fluorine and chlorine adsorber. The whole process only requires manual replenishment of the regenerant and adjustment liquid, which can improve the fluorine and chlorine removal efficiency and effect of the waste acid, reduce the operation difficulty of the equipment, and reduce the investment in labor costs.

[0012] In some embodiments, the ion exchanger includes a housing, the housing covers the fluorine and chlorine adsorber, a first pipe and a second pipe are provided on the housing, a reduction pipe and a cleaning pipe are provided on the first pipe for injecting a regenerant or a cleaning liquid into the fluorine and chlorine adsorber, and the second pipe is used to discharge the regenerant or the cleaning liquid out of the fluorine and chlorine adsorber.

[0013] By covering the fluorine and chlorine adsorber with the housing of the ion exchanger and then conducting the fluorine and chlorine adsorber through the first pipe and the second pipe, it can not only use the fluorine and chlorine adsorber to adsorb the fluorine and chlorine ions in the waste acid, but also use the regenerant to adsorb the fluorine and chlorine ions of the adsorption unit in the fluorine and chlorine adsorber, ensuring the normal operation of fluorine and chlorine removal from the waste acid and the regeneration of the fluorine and chlorine adsorber.

[0014] In some embodiments, an activated carbon layer and / or a plasma exchange resin layer is provided inside the fluorine and chlorine adsorber.

[0015] By using the activated carbon layer and / or the plasma exchange resin layer as the adsorption unit of the fluorine and chlorine adsorber, it is ensured that after adsorbing the fluorine and chlorine ions of the waste acid, the fluorine and chlorine ions can be adsorbed by the regenerant output by the ion exchanger, so as to continuously use the fluorine and chlorine adsorber.

[0016] In some embodiments, there is a cavity between two activated carbon layers, or between two plasma exchange resin layers, or between the activated carbon layer and the plasma exchange resin layer, and both the first pipe and the second pipe conduct the cavity.

[0017] By arranging a cavity inside the fluorine and chlorine adsorber, it is ensured that the fluorine and chlorine ion exchange liquid output by the ion exchanger can enter the fluorine and chlorine adsorber to generate exchange adsorption with the activated carbon layer and / or the ion exchange resin layer for the fluorine and chlorine ions in the activated carbon layer and / or the ion exchange resin layer, enabling the activated carbon layer and / or the ion exchange resin layer to be regenerated into a state capable of adsorbing fluorine and chlorine ions, and the cleaning liquid output by the ion exchanger after regeneration can clean the residual cleaning liquid inside the fluorine and chlorine adsorber, realizing the continuous use of the fluorine and chlorine adsorber without replacement, thereby improving the fluorine and chlorine removal efficiency.

[0018] In some embodiments, a fluorine and chlorine ion detector is connected to the liquid outlet end of the second filter. A compliance discharge pipe and a reflux pipe are connected to the liquid outlet end of the fluorine and chlorine ion detector. Control valves electrically connected to the fluorine and chlorine ion detector are provided on both the compliance discharge pipe and the reflux pipe. The compliance discharge pipe is used to discharge the waste acid with qualified fluorine and chlorine ion content in a compliant manner. The other end of the reflux pipe is connected to the adjustment tank for refluxing the waste acid with unqualified fluorine and chlorine ion content into the adjustment tank.

[0019] By arranging a fluorine and chlorine ion detector to detect the fluorine and chlorine ion content in the treated waste acid to determine whether the treatment of the waste acid is qualified. If it is qualified, it can be discharged or recycled through the compliance discharge pipe. If it is unqualified, it is refluxed into the adjustment tank through the reflux pipe for re-treatment, improving the fluorine and chlorine removal treatment effect of the waste acid.

[0020] In some embodiments, it further includes a control box with a PLC controller. A temperature sensor is provided inside the adjustment tank. The temperature sensor and the heating element are both electrically connected to the PLC controller.

[0021] By electrically connecting the heating element and the temperature sensor inside the adjustment tank through the PLC controller of the control box, it is ensured that the temperature of the adjustment tank can automatically adjust the heating temperature according to requirements, improving the controllability of the working temperature of the adjustment tank.

[0022] In some embodiments, control valves are provided on the pipelines between the sedimentation tank and the first filter, between the first filter and the adjustment tank, between the adjustment tank and the fluorine and chlorine adsorber, between the fluorine and chlorine adsorber and the second filter, between the second filter and the fluorine and chlorine ion detector, between the first pipeline and the second pipeline, and on the waste acid discharge pipe. All the control valves are electrically connected to the PLC controller.

[0023] By using the PLC controller of the control box to control the opening and closing of the control valves to achieve the conduction or truncation of the pipelines, it is ensured that the normal operation of each process of the entire smelting waste acid fluorine and chlorine removal device is ensured, improving the fluorine and chlorine removal treatment efficiency and treatment effect of the waste acid.

[0024] In some of these embodiments, the first filter is a mechanical filter, and the second filter is an ultrafiltration membrane filter or an activated carbon filter.

[0025] By using a mechanical filter as the first filter and an ultrafiltration membrane filter or an activated carbon filter as the second filter, it is ensured that large particle impurities, floating substances, tiny particles, and residues in the waste acid can be smoothly filtered, improving the treatment effect of the waste acid.

[0026] Based on the above technical solution, compared with the prior art, the present utility model has the following beneficial effects:

[0027] By using a sedimentation tank to receive the waste acid, allowing the waste acid to stand and settle, the supernatant is transported to the first filter to filter large particle impurities and floating substances. The filtered waste acid is transported to an adjustment tank to adjust the pH value by heating. After the pH value is adjusted, the waste acid enters the fluorine and chlorine adsorber to have its fluorine and chlorine ions adsorbed. After the removal of the fluorine and chlorine ions in the waste acid, it enters the second filter to filter tiny particles and residues in the waste acid, improving the treatment quality of the waste acid. And an ion exchanger is used to spray a regenerant onto the fluorine and chlorine adsorber to adsorb the fluorine and chlorine ions on the fluorine and chlorine adsorber, realizing the recycling of the fluorine and chlorine adsorber. The entire process only requires manual replenishment of the regenerant and adjustment liquid, which can improve the fluorine and chlorine removal efficiency and effect of the waste acid, reduce the operation difficulty of the equipment, and reduce the input of labor costs. Description of the Drawings

[0028] Figure 1 is a schematic diagram of the present utility model;

[0029] Figure 2 is a cross-sectional schematic diagram of the fluorine and chlorine adsorber and the ion exchanger of the present utility model.

[0030] Description of the Reference Numerals:

[0031] 100, sedimentation tank; 110, waste acid discharge pipe; 200, first filter; 300, adjustment tank; 310, heating element; 400, adjustment liquid supply tank; 500, fluorine and chlorine adsorber; 510, activated carbon layer; 520, ion exchange resin layer; 530, cavity; 600, ion exchanger; 610, housing; 620, first pipe; 630, second pipe; 640, reduction pipe; 650, cleaning pipe; 700, second filter; 800, fluorine and chlorine ion detector; 810, up-to-standard discharge pipe; 820, return pipe; 900, control valve. Detailed Embodiments

[0032] To facilitate the understanding of the present utility model, the specific embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings of the specification.

[0033] Unless otherwise specified or defined, the "first, second..." used in this article is only for differentiating names and does not represent a specific quantity or order.

[0034] Unless otherwise specified or defined, the term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0035] It should be noted that in this article, "fixed to" and "connected to" can be directly fixed or connected to an element, or indirectly fixed or connected to an element.

[0036] As Figure 1-2 shown, a smelting waste acid defluorination and dechlorination device provided in this embodiment includes: a sedimentation tank 100, connected to the liquid outlet end of the waste acid up-to-standard discharge pipe 810, and the liquid outlet end of the sedimentation tank 100 is connected to a first filter 200 for filtering and removing large particle impurities and floating matters in the supernatant of the sedimentation tank 100; an adjustment tank 300, connected to the liquid outlet end of the first filter 200, an adjustment liquid supply tank 400 is connected to the adjustment tank 300 for adjusting the pH value of the waste acid discharged from the first filter 200, and a heating element 310 is provided in the adjustment tank 300 for heating the waste acid in the adjustment tank 300; a fluorine and chlorine adsorber 500, connected to the liquid outlet end of the adjustment tank 300, and the liquid outlet end of the fluorine and chlorine adsorber 500 is connected to a second filter 700 for removing fine particles and residues in the waste acid discharged from the fluorine and chlorine adsorber 500; an ion exchanger 600, connected to the fluorine and chlorine adsorber 500 for spraying a regenerant onto the fluorine and chlorine adsorber 500 to adsorb fluorine and chlorine ions on the fluorine and chlorine adsorber 500.

[0037] In some of these embodiments, the ion exchanger 600 includes a housing 610, the housing 610 covers the fluorine and chlorine adsorber 500, a first pipe 620 and a second pipe 630 are provided on the housing 610, a reduction pipe 640 and a cleaning pipe 650 are provided on the first pipe 620 for injecting a regenerant or a cleaning liquid into the fluorine and chlorine adsorber 500, and the second pipe 630 is used to discharge the regenerant or the cleaning liquid out of the fluorine and chlorine adsorber 500.

[0038] By covering the fluorine and chlorine adsorber 500 with the housing 610 of the ion exchanger 600 and then conducting the fluorine and chlorine adsorber 500 through the first pipe 620 and the second pipe 630, not only can the fluorine and chlorine adsorber 500 be used to adsorb fluorine and chlorine ions in the waste acid, but also the fluorine and chlorine ions of the adsorption unit in the fluorine and chlorine adsorber 500 can be adsorbed by the regenerant, ensuring the normal operation of the defluorination and dechlorination of the waste acid and the regeneration of the fluorine and chlorine adsorber 500.

[0039] In some of these embodiments, an activated carbon layer 510 and / or a plasma exchange resin layer 520 are provided inside the fluorochloride adsorber 500.

[0040] By using the activated carbon layer 510 and / or the plasma exchange resin layer 520 as the adsorption unit of the fluorochloride adsorber 500, it is ensured that after the fluorochloride ions adsorbed by the waste acid can be adsorbed by the regenerant output by the ion exchanger 600, so as to ensure the continuous use of the fluorochloride adsorber 500.

[0041] In some of these embodiments, there is a cavity 530 between two activated carbon layers 510, or between two plasma exchange resin layers 520, or between the activated carbon layer 510 and the plasma exchange resin layer 520. Both the first pipe 620 and the second pipe 630 communicate with the cavity 530.

[0042] By providing the cavity 530 inside the fluorochloride adsorber 500, it is ensured that the fluorochloride ion exchange liquid output by the ion exchanger 600 can enter the fluorochloride adsorber 500 to exchange and adsorb the fluorochloride ions in the activated carbon layer 510 and / or the plasma exchange resin layer 520, so that the activated carbon layer 510 and / or the plasma exchange resin layer 520 can be regenerated into a state capable of adsorbing fluorochloride ions, and the cleaning liquid output by the ion exchanger 600 after regeneration can clean the residual cleaning liquid in the fluorochloride adsorber 500, realizing the continuous use of the fluorochloride adsorber 500 without replacement, thereby improving the fluorochloride removal efficiency.

[0043] In some of these embodiments, a fluorochloride ion detector 800 is connected to the liquid outlet end of the second filter 700. A compliance discharge pipe 810 and a reflux pipe 820 are connected to the liquid outlet end of the fluorochloride ion detector 800. Control valves 900 electrically connected to the fluorochloride ion detector 800 are provided on both the compliance discharge pipe 810 and the reflux pipe 820. The compliance discharge pipe 810 is used to discharge the waste acid with qualified fluorochloride ion content in a compliant manner, and the other end of the reflux pipe 820 is connected to the adjustment tank 300 for returning the waste acid with unqualified fluorochloride ion content to the adjustment tank 300.

[0044] By providing the fluorochloride ion detector 800, the fluorochloride ion content in the treated waste acid is detected to determine whether the treatment of the waste acid is qualified. If it is qualified, it can be discharged or recycled through the compliance discharge pipe 810. If it is unqualified, it is returned to the adjustment tank 300 through the reflux pipe 820 for re-treatment, improving the fluorochloride removal treatment effect of the waste acid.

[0045] In some of these embodiments, it further includes a control box with a PLC controller. A temperature sensor is provided in the adjustment tank 300, and both the temperature sensor and the heating element 310 are electrically connected to the PLC controller.

[0046] The heating element 310 and the temperature sensor in the adjustment tank 300 are electrically connected through the PLC controller of the control box to ensure that the temperature of the adjustment tank 300 can automatically adjust the heating temperature according to requirements, improving the controllability of the working temperature of the adjustment tank 300.

[0047] In some of these embodiments, control valves 900 are provided on the pipelines between the sedimentation tank 100 and the first filter 200, between the first filter 200 and the adjustment tank 300, between the adjustment tank 300 and the fluorochloride adsorber 500, between the fluorochloride adsorber 500 and the second filter 700, between the second filter 700 and the fluorochloride ion detector 800, on the first pipeline 620 and the second pipeline 630, and on the waste acid discharge pipe 110. All the control valves 900 are electrically connected to the PLC controller.

[0048] By using the PLC controller of the control box to control the opening and closing of the control valve 900 to achieve the conduction or truncation of the pipeline, ensuring the normal operation of each process of the entire smelting waste acid defluorination and dechlorination device, and improving the defluorination and dechlorination treatment efficiency and treatment effect of the waste acid.

[0049] In some of these embodiments, the first filter 200 is a mechanical filter, and the second filter 700 is an ultrafiltration membrane filter or an activated carbon filter. Existing filters in the prior art can be used for the mechanical filter and the ultrafiltration membrane filter or the activated carbon filter.

[0050] By using a mechanical filter as the first filter 200 and an ultrafiltration membrane filter or an activated carbon filter as the second filter 700, it is ensured that large particle impurities, floating substances, fine particles, and residues in the waste acid can be smoothly filtered, improving the treatment effect of the waste acid.

[0051] All pipelines in this embodiment are made of corrosion-resistant metal pipelines, and the control box can be a control cabinet with a PLC controller in the prior art.

[0052] A fluorine and chlorine removal device for smelting waste acid provided in this embodiment, compared with the prior art, receives waste acid through a sedimentation tank 100, allows the waste acid to stand and precipitate, transports the supernatant to a first filter 200 to filter large particulate impurities and floating matters, transports the filtered waste acid to an adjustment tank 300 to adjust the pH value by heating, the waste acid after adjusting the pH value enters a fluorine and chlorine adsorber 500 to have its fluorine and chlorine ions adsorbed, after the removal of the fluorine and chlorine ions in the waste acid, it enters a second filter 700 to filter out fine particles and residues in the waste acid, improving the treatment quality of the waste acid, and uses an ion exchanger 600 to spray a regenerant onto the fluorine and chlorine adsorber 500 to adsorb the fluorine and chlorine ions on the fluorine and chlorine adsorber 500, realizing the recycling of the fluorine and chlorine adsorber 500. The whole process only requires manual replenishment of the regenerant and adjustment liquid, which can improve the fluorine and chlorine removal efficiency and effect of the waste acid, reduce the operation difficulty of the equipment, and reduce the investment in labor costs.

[0053] According to the disclosure and teachings of the above specification, those skilled in the art to which the present utility model pertains can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims

1. A chlorine removal device for smelting waste acid, characterized in that: include: The sedimentation tank (100) is connected to the liquid outlet of the waste acid standard discharge pipe (810), and the liquid outlet of the sedimentation tank (100) is connected to a first filter (200) for filtering and removing large particle impurities and floating objects in the supernatant of the sedimentation tank (100); An adjustment tank (300) is connected to the liquid outlet of the first filter (200); an adjustment liquid supply tank (400) is connected to the adjustment tank (300) and is used to adjust the pH value of the dirty acid discharged from the first filter (200); and a heating element (310) is provided in the adjustment tank (300) and is used to heat the dirty acid in the adjustment tank (300); A fluorine-chlorine adsorber (500) is connected to the liquid outlet of the adjustment tank (300), and the liquid outlet of the fluorine-chlorine adsorber (500) is connected to a second filter (700) for removing tiny particles and residues in the waste acid discharged from the fluorine-chlorine adsorber (500); The ion exchanger (600) is connected to the fluorine-chlorine adsorber (500) and is used to spray a regeneration agent into the fluorine-chlorine adsorber (500) to adsorb fluorine and chloride ions on the fluorine-chlorine adsorber (500).

2. The smelting waste acid defluorination and chlorination device according to claim 1, characterized in that: The ion exchanger (600) comprises a shell (610), wherein the shell (610) is arranged on the fluorine-chlorine adsorber (500), and a first pipe (620) and a second pipe (630) are arranged on the shell (610), and a reduction pipe (640) and a cleaning pipe (650) are arranged on the first pipe (620) for injecting a regeneration agent or a cleaning liquid into the fluorine-chlorine adsorber (500), and the second pipe (630) is used to discharge the regeneration agent or the cleaning liquid out of the fluorine-chlorine adsorber (500).

3. The smelting waste acid defluorination and chlorination device according to claim 2, characterized in that: An activated carbon layer (510) and / or an ion exchange resin layer (520) is provided inside the fluorine-chlorine adsorber (500).

4. The smelting waste acid defluorination and chlorination device as claimed in claim 3, characterized in that: A cavity (530) is provided between two activated carbon layers (510), or between two plasma exchange resin layers (520), or between an activated carbon layer (510) and a plasma exchange resin layer (520), and the first pipe (620) and the second pipe (630) are both connected to the cavity (530).

5. The smelting waste acid defluorination and chlorination device according to claim 4, characterized in that: A fluorine and chloride ion measuring instrument (800) is connected to the liquid outlet of the second filter (700), and a standard discharge pipe (810) and a return pipe (820) are connected to the liquid outlet of the fluorine and chloride ion measuring instrument (800). The standard discharge pipe (810) and the return pipe (820) are both provided with control valves (900) electrically connected to the fluorine and chloride ion measuring instrument (800). The standard discharge pipe (810) is used to discharge the waste acid that has a standard fluorine and chloride ion content, and the other end of the return pipe (820) is connected to the adjustment tank (300) to return the waste acid that has a non-standard fluorine and chloride ion content to the adjustment tank (300).

6. The smelting waste acid defluorination and chlorination device according to claim 5, characterized in that: It also comprises a control box having a PLC controller. A temperature sensor is arranged in the adjustment tank (300). The temperature sensor and the heating element (310) are both electrically connected to the PLC controller.

7. The smelting waste acid defluorination and chlorination device according to claim 6, characterized in that: The control valves (900) are provided on the pipeline between the sedimentation tank (100) and the first filter (200), on the pipeline between the first filter (200) and the adjustment tank (300), on the pipeline between the adjustment tank (300) and the fluorine-chlorine adsorber (500), on the pipeline between the fluorine-chlorine adsorber (500) and the second filter (700), on the pipeline between the second filter (700) and the fluorine-chlorine ion measuring instrument (800), on the first pipeline (620) and the second pipeline (630), and on the waste acid discharge pipe (110), and all the control valves (900) are electrically connected to the PLC controller.

8. The smelting waste acid defluorination and chlorination device according to any one of claims 1 to 7, characterized in that: The first filter (200) is a mechanical filter, and the second filter (700) is an ultrafiltration membrane filter or an activated carbon filter.

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