Waste gas purification equipment and method for metal refining

Abstract

According to the waste gas purification equipment and method for metal refining, primary purification treatment is carried out in the pretreatment pipeline, secondary purification treatment is carried out in the liquid storage cavity, and tertiary purification treatment is carried out in the filler assembly, so that waste gas is purified for three times at different degrees, and the purification effect is improved; the three times of purification are closely connected together in series, meanwhile, the neutralization solution which does not fully react is repeatedly utilized to serve as a mixed neutralization solution to conduct secondary purification on waste gas, the neutralized neutralization solution is supplemented with chemicals to be recycled, resource waste is reduced, the neutralization solution and the purified waste gas can both be detected in real time, and the detection efficiency is improved. Therefore, the treatment effect is ensured.

Description

Technical Field

[0001] The present invention relates to the field of waste gas purification, and in particular to a waste gas purification device and method for metal refining. Background Art

[0002] Excessive waste gas emissions during metal smelting not only pollute the air and form acid rain, but also have adverse effects on the surface environment and human health, so waste gas treatment is an important means to maintain environmental quality. Since smelting waste gas contains a large amount of acid gas and chlorine, the existing waste gas treatment methods and equipment only neutralize the waste gas once, which cannot fully neutralize and purify it. If you want to fully neutralize the acid gas and chlorine in the waste gas, you can only increase the concentration of the neutralizing liquid or circulate it through a circulation system. However, increasing the concentration of the neutralizing liquid will increase the purification cost and waste resources, while circulatory purification will reduce the purification efficiency. Therefore, it is very necessary to propose a method that can fully purify the waste gas, reduce the cost of waste gas purification and improve the efficiency of waste gas purification.

[0003] Therefore, there is an urgent need for an exhaust gas purification device and method for metal refining that can solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a waste gas purification device and method for metal refining, so that the waste gas can be fully purified, the purification efficiency can be improved, and the purification cost can be reduced, so as to solve the existing technical defects and unattainable technical requirements.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides an exhaust gas purification device for metal refining, comprising:

[0007] Purification tower, used for purifying exhaust gas;

[0008] An exhaust gas conveying component, the exhaust gas conveying component is connected to the purification tower and is used for conveying exhaust gas;

[0009] A neutralizing liquid component, which is disposed at the bottom of the purification tower and is used for storing the neutralizing liquid and purifying the exhaust gas;

[0010] A spray assembly, which is disposed in the purification tower and is connected to the neutralizing liquid assembly, and is used to spray neutralizing liquid to purify the waste gas;

[0011] The detection component is used to detect the purified exhaust gas and neutralization liquid.

[0012] By adopting the above technical solution, the exhaust gas is transported through the exhaust gas conveying assembly, and three-stage purification is achieved in the process of transportation. Integrating the above design into a purification equipment can not only achieve effective purification of the exhaust gas, but also the overall purification process can cooperate with each other to achieve a triple improvement in exhaust gas purification effect, purification efficiency and resource conservation.

[0013] Preferably, the purification tower comprises a tower body, an air inlet is provided at the lower part of the tower body, an air outlet is provided at the top of the tower body, and a packing assembly is provided at the middle part of the tower body.

[0014] By adopting the above technical solution, the tower body serves as the main structure of the entire equipment, which is convenient for direct connection with the existing exhaust gas emission equipment. There is no need to make too much modification to the original emission equipment, and the application is more convenient. Multiple manholes can be set on the tower body. The manholes are made of transparent materials, which is not only convenient for maintenance, but also can observe the operation status in real time.

[0015] Preferably, the packing assembly comprises a packing support plate, a packing layer is supported above the packing support plate, and a packing pressure plate is provided above the packing layer.

[0016] By adopting the above technical solution, a packing support plate is provided for stacking the packing, and a packing pressure plate is provided to prevent the packing in the packing layer from being blown by the rising airflow and affecting the purification effect.

[0017] Preferably, the waste gas conveying component includes a pretreatment pipe, which is connected to the air inlet, and the bottom of the pretreatment pipe is provided with a waste gas conveying pipe connected to the neutralizing liquid component, and the side wall of the pretreatment pipe is provided with an air outlet.

[0018] By adopting the above technical solution, the waste gas can be transported into the purification structures of each level in the order of the pretreatment pipeline and the waste gas transport pipeline, so that the transportation of the waste gas is smoother.

[0019] Preferably, the pretreatment pipeline is a wavy structure.

[0020] By adopting the above technical solution, the pretreatment pipe with a wavy structure can effectively extend the flow path of the exhaust gas, so that it can fully perform a purification treatment.

[0021] Preferably, the neutralizing liquid component includes a liquid storage chamber, the liquid storage chamber is arranged at the bottom of the tower body, the exhaust gas delivery pipeline extends into the liquid storage chamber, and the liquid storage chamber is connected with the liquid distribution tank through a circulation pipeline.

[0022] By adopting the above technical solution and setting up a circulation pipeline and a liquid distribution pool, the consumed neutralization liquid can be replenished in time, thereby ensuring the purification effect.

[0023] Preferably, the spray assembly includes a first spray pipe and a second spray pipe, the first spray pipe and the second spray pipe are both connected to the liquid storage chamber through a delivery pump, the first spray pipe is provided with a first nozzle, the first nozzle is arranged in the pretreatment pipe, and the second spray pipe is provided with a second nozzle, the second nozzle is arranged above the packing assembly.

[0024] By adopting the above technical scheme, the neutralizing liquid can be further atomized through the first nozzle and the second nozzle. Both the first nozzle and the second nozzle adopt high-efficiency nozzles, and the nozzles can select high-efficiency spiral nozzles with a diameter of not less than 50 mm, so that the spray is uniform and the flow rate is large, and it is not easy to be blocked, thereby enhancing the atomization effect, prolonging the falling time of the neutralizing liquid, and increasing the contact area with the exhaust gas; in addition, by increasing the number of spray layers of the first nozzle and the second nozzle, the contact area and time between the exhaust gas and the neutralizing liquid can be increased, the neutralization effect can be improved, and the purification effect and dust removal effect of the exhaust gas can be improved.

[0025] Preferably, the detection component includes a gas detection sensor and a liquid detection sensor, the gas detection sensor is arranged at the gas outlet, the liquid detection sensor is arranged on the circulation pipeline, and the gas detection sensor and the liquid detection sensor both establish communication with the control system.

[0026] By adopting the above technical scheme, the gas detection sensor can detect the purified gas, and discharge it after passing the test. If the test fails, it will return to the air inlet for re-purification, thereby ensuring that the emission meets the standard; the neutralizing liquid can be detected in real time by the liquid detection sensor to ensure that its concentration can meet the purification requirements. If the concentration is too low, the neutralizing liquid ingredients and the reagents can be supplemented, thereby improving the utilization rate of the neutralizing liquid and the use rate of the reagent without affecting the circulation of the neutralizing liquid.

[0027] The present invention also provides a method for purifying waste gas for metal refining, comprising the following steps:

[0028] Step 1: The initial neutralization liquid is atomized through the first nozzle, and the waste gas generated after metal refining enters the pretreatment pipeline for a purification treatment;

[0029] Step 2: The waste gas after the primary purification treatment is aerated in the liquid storage chamber through the waste gas delivery pipeline, and is subjected to secondary purification treatment with the mixed neutralization liquid in the liquid storage chamber;

[0030] Step 3: The initial neutralization liquid is atomized through the second nozzle, and the waste gas after the secondary purification treatment rises into the packing component filled with the atomized initial neutralization liquid for a third purification treatment;

[0031] Step 4: The exhaust gas after three purification treatments continues to rise, and is tested after the water vapor is removed. After passing the test, it is discharged through the outlet.

[0032] By adopting the above technical solution, the exhaust gas is purified once in the pretreatment pipe, twice in the liquid storage chamber, and three times in the filler assembly, so that the exhaust gas is purified three times to different degrees to improve the purification effect.

[0033] Preferably, the mixed neutralized solution in step 2 is composed of the initial neutralized solution, the neutralized solution that is not fully used after one purification treatment, and the neutralized solution that is not fully used after three purification treatments.

[0034] By adopting the above technical scheme, the neutralization liquid that is not fully neutralized is collected together, and the neutralization liquid that is not fully used participates in the re-neutralization and purification of the exhaust gas, so that the neutralization liquid can play the maximum purification effect, reduce the waste of the neutralization liquid, and avoid the additional addition of the neutralization liquid, which not only realizes resource conservation, but also increases the amount of the neutralization liquid, increases the rate of the neutralization reaction with the exhaust gas, and improves the purification effect; the recycling of the neutralization liquid may include: 1) discharging the mixed neutralization liquid into the liquid preparation tank; 2) adding a neutralizing agent to the discharged neutralization liquid to make it meet the use standard of the initial neutralization liquid; 3) transporting the neutralization liquid after adding the agent to the liquid storage chamber through a circulation pipeline for use as the initial neutralization liquid; by recycling all the neutralization liquid that is not fully purified, adding a neutralization agent when it does not meet the neutralization concentration, reducing the waste of the neutralization liquid, reducing the time and agent dosage required for reconfiguring the neutralization liquid, saving resources, reducing the configuration time, and improving the overall purification efficiency.

[0035] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0036] The present invention provides a waste gas purification device and method for metal refining. The waste gas is purified three times to different degrees by performing a purification treatment in a pretreatment pipeline, a secondary purification treatment in a liquid storage chamber, and a tertiary purification treatment in a filler component, thereby improving the purification effect. The three purifications are closely connected in series, and the neutralization liquid that has not reacted fully is reused to perform secondary purification on the waste gas as a mixed neutralization liquid. The neutralized neutralization liquid is supplemented with a reagent for recycling, thereby reducing resource waste. The neutralization liquid and the purified waste gas can both be detected in real time, thereby ensuring the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1A schematic diagram of the structure of an exhaust gas purification device for metal refining provided by the present invention;

[0039] Figure 2 A flow chart of a waste gas purification method for metal refining provided by the present invention. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it is necessary to understand that the terms "length", "width", "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The purpose of the present invention is to provide a waste gas purification device and method for metal refining to solve the problems existing in the prior art.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Embodiment 1:

[0046] This embodiment provides an exhaust gas purification device for metal refining, such as Figure 1 As shown, including:

[0047] Purification tower 1, used for purifying waste gas;

[0048] An exhaust gas conveying component 2, the exhaust gas conveying component 2 is connected to the purification tower 1 and is used for conveying the exhaust gas;

[0049] A neutralizing liquid component 3, which is disposed at the bottom of the purification tower 1 and is used for storing the neutralizing liquid and purifying the waste gas;

[0050] A spray assembly 4 is disposed in the purification tower 1 and is connected to the neutralizing liquid assembly 3, and is used to spray the neutralizing liquid to purify the waste gas;

[0051] The detection component 5 is used to detect the purified waste gas and neutralization liquid.

[0052] In this embodiment, the exhaust gas is transported through the exhaust gas conveying component 2, and three-stage purification is achieved in the process of transportation. Integrating the above design into a purification device can not only achieve effective purification of the exhaust gas, but also the overall purification process can cooperate with each other to achieve a triple improvement in the exhaust gas purification effect, purification efficiency and resource conservation.

[0053] As an embodiment, the purification tower 1 includes a tower body 11 , an air inlet 12 is provided at the lower portion of the tower body 11 , an air outlet 13 is provided at the top of the tower body 11 , and a packing assembly 6 is provided at the middle portion of the tower body 11 .

[0054] In this embodiment, the tower body 11 serves as the main structure of the entire equipment, which is convenient for direct connection with the existing exhaust gas emission equipment without making too much modification to the original emission equipment. It is more convenient to use. Multiple manholes can be set on the tower body. The manholes are made of transparent materials, which is not only convenient for maintenance, but also can observe the operation status in real time.

[0055] As an implementation manner, the packing assembly 6 includes a packing support plate 61 , a packing layer 62 is supported above the packing support plate 61 , and a packing pressure plate 63 is provided above the packing layer 62 .

[0056] In this embodiment, a filler support plate 61 is provided for stacking the filler, and a filler pressure plate 63 is provided to prevent the filler in the filler layer 62 from being blown by the rising airflow and affecting the purification effect. It should be understood that the filler assembly 6 can be provided in multiple groups according to demand to ensure the purification effect.

[0057] As an embodiment, the waste gas conveying component 2 includes a pretreatment pipe 21, which is connected to the air inlet 12. The bottom of the pretreatment pipe 21 is provided with a waste gas conveying pipe 22 connected thereto. The waste gas conveying pipe 22 is connected to the neutralizing liquid component 3, and an air outlet 23 is opened on its side wall.

[0058] In this embodiment, the waste gas can be transported into each level of purification structure in the order of the pretreatment pipeline 21 and the waste gas transport pipeline 22, so that the waste gas can be transported more smoothly.

[0059] As an implementation mode, the pretreatment pipeline 21 is a wave-shaped structure.

[0060] In this embodiment, the pre-treatment pipe 21 with a wave-shaped structure can effectively extend the flow path of the exhaust gas, so that a purification treatment can be fully performed.

[0061] As an embodiment, the neutralizing liquid assembly 3 includes a liquid storage chamber 31, which is arranged at the bottom of the tower body 11, and the exhaust gas conveying pipe 22 extends into the liquid storage chamber 31. The liquid storage chamber 31 is connected to the liquid distribution tank 33 through a circulation pipe 32.

[0062] In this embodiment, by providing the circulation pipeline 32 and the liquid distribution tank 33, the consumed neutralization liquid can be replenished in time, thereby ensuring the purification effect.

[0063] As an embodiment, the spray assembly 4 includes a first spray pipe 41 and a second spray pipe 42, both of which are connected to the liquid storage chamber 31 through a delivery pump 43, and the first spray pipe 41 is provided with a first nozzle 44, and the first nozzle 44 is arranged in the pretreatment pipe 21, and the second spray pipe 42 is provided with a second nozzle 45, and the second nozzle 45 is arranged above the packing assembly 6.

[0064] In this embodiment, the neutralizing liquid can be further atomized by the first nozzle 44 and the second nozzle 45. The first nozzle 44 and the second nozzle 45 both adopt high-efficiency nozzles, and the nozzles can select high-efficiency spiral nozzles with a diameter of not less than 50 mm, so that the spray is uniform and the flow rate is large, and it is not easy to be blocked, thereby enhancing the atomization effect, prolonging the falling time of the neutralizing liquid, and increasing the contact area with the exhaust gas; in addition, by increasing the number of spray layers of the first nozzle 44 and the second nozzle 45, the contact area and time between the exhaust gas and the neutralizing liquid can be increased, the neutralization effect can be improved, and the purification effect and dust removal effect of the exhaust gas can be improved.

[0065] As an embodiment, the detection component 5 includes a gas detection sensor 51 and a liquid detection sensor 52. The gas detection sensor 51 is arranged at the gas outlet 13, and the liquid detection sensor 52 is arranged on the circulation pipe 32. Both the gas detection sensor 51 and the liquid detection sensor 52 establish communication with the control system.

[0066] In this embodiment, the gas detection sensor 51 can detect the purified gas, and discharge it if it passes the test. If it fails the test, it will return to the air inlet for re-purification, thereby ensuring that the emission meets the standard. The liquid detection sensor 52 can detect the neutralizing liquid in real time to ensure that its concentration can meet the purification requirements. If the concentration is too low, the neutralizing liquid ingredients and the reagents can be supplemented, thereby improving the utilization rate of the neutralizing liquid and the use rate of the reagents without affecting the circulation of the neutralizing liquid.

[0067] This embodiment also provides a method for purifying waste gas used in metal refining, such as Figure 2 As shown, the following steps are included:

[0068] Step 1: The initial neutralization liquid is atomized through the first nozzle 44, and the waste gas generated after metal refining enters the pretreatment pipeline 21 for a purification treatment;

[0069] Step 2: The waste gas after the primary purification treatment is aerated in the liquid storage chamber 31 through the waste gas delivery pipe 22, and is subjected to secondary purification treatment with the mixed neutralization liquid in the liquid storage chamber 31;

[0070] Step 3: The initial neutralization liquid is atomized by the second nozzle 45, and the waste gas after the secondary purification treatment rises into the packing assembly 6 filled with the atomized initial neutralization liquid for a third purification treatment;

[0071] Step 4: The exhaust gas after three purification treatments continues to rise, and is tested after the water vapor is removed. After passing the test, it is discharged through the outlet 13.

[0072] In this embodiment, the exhaust gas is purified once in the pretreatment pipe 21, twice in the liquid storage chamber 31, and three times in the filler assembly 6, so that the exhaust gas is purified three times to different degrees to improve the purification effect.

[0073] As an embodiment, the mixed neutralized liquid in step 2 is composed of the initial neutralized liquid, the neutralized liquid that is not fully used after one purification treatment, and the neutralized liquid that is not fully used after three purification treatments.

[0074] In this embodiment, the neutralization liquid that is not fully neutralized is collected together, and the neutralization liquid that is not fully used participates in the re-neutralization and purification of the exhaust gas, so that the neutralization liquid can exert the maximum purification effect, reduce the waste of the neutralization liquid, and avoid the additional addition of the neutralization liquid, which not only realizes resource conservation, but also increases the amount of the neutralization liquid, increases the rate of the neutralization reaction with the exhaust gas, and improves the purification effect; the recycling of the neutralization liquid may include: 1) discharging the mixed neutralization liquid into the liquid preparation tank; 2) adding a neutralizing agent to the discharged neutralization liquid to meet the use standard of the initial neutralization liquid; 3) transporting the neutralization liquid after adding the agent to the liquid storage chamber through a circulation pipeline for use as the initial neutralization liquid; by recycling all the neutralization liquid that is not fully purified, adding the neutralization agent when it does not meet the neutralization concentration, reducing the waste of the neutralization liquid, reducing the time and amount of agent required for reconfiguration of the neutralization liquid, saving resources, reducing the configuration time, and improving the overall purification efficiency.

[0075] The present invention provides an exhaust gas purification device and method for metal refining, and its working principle is as follows: first, a reagent is added to a liquid preparation tank 33 to complete the preparation of an initial neutralizing liquid, and then the prepared initial neutralizing liquid is filled into a liquid storage chamber 31 through a circulation pipe 32 until the liquid level is above the bottom of an exhaust gas delivery pipe 22, and the acidic exhaust gas is passed into a pretreatment pipe 21. At this time, the acidic exhaust gas is subjected to dust removal and primary purification treatment by the sprayed atomized initial neutralizing liquid, and then the acidic exhaust gas enters the mixed neutralizing liquid in the liquid storage chamber 31 through the exhaust gas delivery pipe 22 for aeration, and a secondary purification treatment is completed in the liquid storage chamber 31. At this time, the components of the mixed neutralizing liquid are only one of the components of the primary purification treatment. The neutralizing liquid and the initial neutralizing liquid that have not reacted fully are treated, and the waste gas enters the packing assembly 6 after the secondary purification treatment. The neutralizing liquid sprayed by the second nozzle 45 and the waste gas after the secondary purification treatment are diverted through the packing layer 62, so that the two are fully neutralized, thereby achieving three purification treatments. Then the treated waste gas passes through the demisting layer to remove water vapor and is discharged from the air outlet, and the composition of the mixed neutralizing liquid in the liquid storage chamber 31 is increased by the neutralizing liquid that has not reacted fully after the three purification treatments, and this process is repeated; as the reaction proceeds, when it is detected that the concentration of the neutralizing liquid is too low, the consumed neutralizing liquid is replenished in time through the circulation pipe 32 and the liquid distribution tank 33, thereby ensuring the purification effect.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0078] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

[0079] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0080] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A waste gas purification device for metal refining, characterized in that: include: Purification tower, used for purifying exhaust gas; An exhaust gas conveying component, the exhaust gas conveying component is connected to the purification tower and is used for conveying exhaust gas; A neutralizing liquid component, which is disposed at the bottom of the purification tower and is used for storing the neutralizing liquid and purifying the exhaust gas; A spray assembly, which is disposed in the purification tower and is connected to the neutralizing liquid assembly, and is used to spray neutralizing liquid to purify the waste gas; The detection component is used to detect the purified exhaust gas and neutralization liquid.

2. The waste gas purification equipment for metal refining according to claim 1, characterized in that: The purification tower comprises a tower body, an air inlet is arranged at the lower part of the tower body, an air outlet is arranged at the top of the tower body, and a packing assembly is arranged at the middle part of the tower body.

3. The waste gas purification equipment for metal refining according to claim 2, characterized in that: The packing assembly comprises a packing support plate, a packing layer is supported above the packing support plate, and a packing pressure plate is arranged above the packing layer.

4. The waste gas purification equipment for metal refining according to claim 2, characterized in that: The waste gas conveying component includes a pretreatment pipeline, which is connected to the air inlet. The bottom of the pretreatment pipeline is provided with a waste gas conveying pipeline, which is connected to the neutralizing liquid component and has a gas outlet on its side wall.

5. The waste gas purification equipment for metal refining according to claim 4, characterized in that: The pretreatment pipeline is a wave-shaped structure.

6. The waste gas purification equipment for metal refining according to claim 4, characterized in that: The neutralizing liquid component comprises a liquid storage chamber, the liquid storage chamber is arranged at the bottom of the tower body, the exhaust gas delivery pipeline is extended into the liquid storage chamber, and the liquid storage chamber is connected with the liquid distribution tank through a circulation pipeline.

7. The waste gas purification equipment for metal refining according to claim 6, characterized in that: The spray assembly includes a first spray pipe and a second spray pipe, both of which are connected to the liquid storage chamber through a delivery pump. The first spray pipe is provided with a first nozzle, and the first nozzle is arranged in the pretreatment pipe. The second spray pipe is provided with a second nozzle, and the second nozzle is arranged above the packing assembly.

8. The waste gas purification equipment for metal refining according to claim 6, characterized in that: The detection component includes a gas detection sensor and a liquid detection sensor. The gas detection sensor is arranged at the gas outlet, and the liquid detection sensor is arranged on the circulation pipeline. Both the gas detection sensor and the liquid detection sensor establish communication with a control system.

9. A method for purifying waste gas for metal refining, characterized in that: The following steps are involved: Step 1: The initial neutralization liquid is atomized through the first nozzle, and the waste gas generated after metal refining enters the pretreatment pipeline for a purification treatment; Step 2: The waste gas after the primary purification treatment is aerated in the liquid storage chamber through the waste gas delivery pipeline, and is subjected to secondary purification treatment with the mixed neutralization liquid in the liquid storage chamber; Step 3: The initial neutralization liquid is atomized through the second nozzle, and the waste gas after the secondary purification treatment rises into the packing component filled with the atomized initial neutralization liquid for a third purification treatment; Step 4: The exhaust gas after three purification treatments continues to rise, and is tested after the water vapor is removed. After passing the test, it is discharged through the outlet.

10. The method for purifying waste gas for metal refining according to claim 9, characterized in that: The mixed neutralized solution in step 2 is composed of the initial neutralized solution, the neutralized solution that is not fully used after one purification treatment, and the neutralized solution that is not fully used after three purification treatments.

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