Electrolysis device treatment system suitable for waste gas purification

Abstract

The utility model discloses an electrolysis device treatment system suitable for waste gas purification, which is characterized in that waste gas is introduced into an acidic oxidation tower, gas of the acidic oxidation tower is introduced into an alkaline washing reduction tower, and finally purified gas is discharged through the alkaline washing reduction tower; a first bottom liquid storage area of the acidic oxidation tower is connected with a feeding bin of a first electrolysis device, a discharging port of the feeding bin is connected with the first electrolysis device, and the first electrolysis device is connected with the first bottom liquid storage area; a second bottom liquid storage area of the alkali washing reduction tower is connected with a liquid inlet of a second electrolysis device, liquid on the anode side of the second electrolysis device is introduced into the first bottom liquid storage area, and liquid on the cathode side of the second electrolysis device is introduced into the second bottom liquid storage area; and an alkaline agent is also introduced into the bottom liquid storage area II. The utility model discloses an electrolysis device treatment system suitable for waste gas purification. A wet chemical filler absorption tower and an oxidation and reduction two-stage treatment process are adopted; overall cooperation of the purification system is improved, and redundancy of a reaction mechanism is reduced.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically to an electrolysis device treatment system suitable for waste gas purification. Background Technology

[0002] In recent years, some harmful substances have been found in exhaust gases. The commonly used purification method involves adding reagents to carry out a multi-step reaction, and then subjecting the resulting liquid to multiple purification treatments.

[0003] However, existing technologies still have the following problems:

[0004] 1. The purification system has a complex structure and a relatively simple processing mode, making it impossible to achieve collaborative and sustainable cyclical processing.

[0005] 2. It cannot introduce the products of its own reaction into the purification system process to participate in purification. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art and provides an electrolytic device treatment system suitable for waste gas purification. It adopts a wet chemical packing absorption tower and a two-stage treatment process of oxidation and reduction. It improves the overall coordination of the purification system, and while meeting the efficiency and capacity requirements of purification treatment, it can also reduce the participation of external agents and the number of participation steps, and reduce the redundancy of the reaction mechanism.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an electrolytic device treatment system suitable for waste gas purification, comprising: an acidic oxidation tower, an inlet 1 of the acidic oxidation tower for introducing waste gas to be purified, an outlet 1 of the acidic oxidation tower connected to an inlet 2 of the alkaline washing and reduction tower, and an outlet 2 of the alkaline washing and reduction tower for discharging the treated gas.

[0008] The acidic oxidation tower is equipped with an acidic oxidation chamber. Inside the acidic oxidation chamber, there is a bottom liquid storage area and a spray area located between an air inlet and an air outlet. The liquid outlet of the acidic oxidation chamber is connected to the feeding hopper of the electrolysis device, the discharge outlet of the feeding hopper is connected to the electrolysis device, and the electrolysis device is connected to the liquid inlet of the acidic oxidation chamber.

[0009] The alkaline washing and reduction tower is equipped with an alkaline washing and reduction chamber. Inside the alkaline washing and reduction chamber, there are two bottom liquid storage areas and two spray areas located between the second air inlet and the second air outlet. The liquid outlet of the alkaline washing and reduction chamber is connected to the liquid inlet of the second electrolysis device. The liquid discharged from the anode side of the second electrolysis device is introduced into the first bottom liquid storage area, and the liquid discharged from the cathode side of the second electrolysis device is introduced into the second bottom liquid storage area.

[0010] In a preferred embodiment of this utility model, the interior of the acidic oxidation chamber is provided with a bottom liquid storage area, a packing area, and a spraying area from bottom to top. A spraying mechanism is provided in the spraying area, the spray nozzle of the spraying mechanism corresponds to the packing area, and the inlet of the spraying mechanism is connected to the bottom liquid storage area through a pump.

[0011] And / or,

[0012] Inside the alkaline washing and reduction chamber, from bottom to top, there are three zones: a bottom liquid storage zone 2, a packing zone 2, and a spray zone 2. The spray zone 2 is equipped with a spray mechanism 2, the spray nozzle of which corresponds to the packing zone 2, and the inlet of the spray mechanism 2 is connected to the bottom liquid storage zone 2 via a pump.

[0013] In a preferred embodiment of this utility model, the electrolysis device is a diaphragmless electrolysis device. The diaphragmless electrolysis device is equipped with a diaphragmless electrolysis cell. The feed port of the diaphragmless electrolysis cell is connected to the inlet of the feed hopper. The discharge port of the diaphragmless electrolysis cell is connected to the inlet of the electric heating device. The outlet of the electric heating device is connected to the bottom liquid storage area through a pump. The upper part of the diaphragmless electrolysis cell is also equipped with a gas outlet, and the lower part of the diaphragmless electrolysis cell is also equipped with a waste liquid outlet.

[0014] In a preferred embodiment of this utility model, the second electrolysis device is a diaphragm electrolysis device, which is provided with a diaphragm electrolysis cell, in which anion exchange membrane and cation exchange membrane are spaced apart; the outlet of the alkaline washing and reduction chamber introduces liquid into the area between the anion exchange membrane and the cation exchange membrane; an anode electrode and a cathode electrode are provided on both sides of the anion exchange membrane and the cation exchange membrane and between them and the diaphragm electrolysis cell, and are respectively separated into an anode side and a cathode side; the anode side of the second electrolysis device is connected to the bottom liquid storage area one through a pump, and the cathode side of the second electrolysis device is connected to the bottom liquid storage area two through a pump.

[0015] In a preferred embodiment of this utility model, the anode side of the electrolysis device two is further connected to a pipeline in the bottom liquid storage area, and a water inlet pipeline is introduced into the anode side of the electrolysis device two.

[0016] In the pipeline connected to the bottom liquid storage area 2, the cathode side of the electrolysis device 2 is also connected to a branch line that enters the cathode side water inlet pipeline and introduces the cathode side of the electrolysis device 2.

[0017] In a preferred embodiment of this utility model, a path is also led out from the bottom liquid storage area and connected to the inlet of the feeding hopper;

[0018] The feeding hopper of electrolysis unit one is used to introduce reagents, while the bottom storage area two introduces alkaline reagents.

[0019] In a preferred embodiment of this invention, the acidic oxidation tower and the alkaline washing reduction tower are wet chemical packed absorption towers.

[0020] In a preferred embodiment of this utility model, the second outlet of the alkaline washing reduction tower is connected to the third inlet of the blower, and the blower is used to discharge the purified airflow.

[0021] In a preferred embodiment of this utility model, the exhaust gas to be purified introduced into the inlet of the acidic oxidation tower is a gas containing nitrogen oxides and hydrogen chlorine.

[0022] The reagents introduced into the feeding hopper of electrolysis unit one include NaCl and NaOH;

[0023] The alkaline reagent introduced into the bottom storage zone of the alkaline washing reduction tower includes NaHS.

[0024] This utility model solves the defects existing in the technical background, and the beneficial technical effects of this utility model are:

[0025] This utility model discloses an electrolytic device treatment system suitable for waste gas purification, which adopts a wet chemical packed absorption tower and a two-stage treatment process of oxidation and reduction; it improves the overall coordination of the purification system, and while meeting the efficiency and capacity requirements of purification treatment, it can also reduce the participation of external agents and the number of participation steps, and reduce the redundancy of the reaction mechanism. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the structure of an electrolysis device treatment system suitable for waste gas purification, according to a preferred embodiment of this utility model. Figure 1 ;

[0028] Figure 2 This is an enlarged structural schematic diagram of an electrolysis device one in an electrolysis device treatment system suitable for waste gas purification, according to a preferred embodiment of this utility model.

[0029] Figure 3 This is an enlarged structural schematic diagram of electrolysis device two in an electrolysis device treatment system suitable for waste gas purification according to a preferred embodiment of this utility model.

[0030] Figure 4 This is a schematic diagram of the structure of an electrolysis device treatment system suitable for waste gas purification, according to a preferred embodiment of this utility model. Figure 2 ;

[0031] Among them, 1-pipeline, 21-acidic oxidation tower, 211-bottom storage area one, 212-packing area one, 213-spraying area one, 22-alkali washing reduction tower, 221-bottom storage area one, 222-packing area one, 223-spraying area one, 23-exhaust pipe, 31-electrolysis device one, 32-electric heating device, 33-electrolysis device two. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0033] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in the embodiments of this utility model, the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Example 1

[0034] like Figures 2-4 As shown, this utility model discloses an electrolysis device treatment system suitable for waste gas purification, including: an acidic oxidation tower 21, with an inlet 1 for introducing the waste gas to be purified, an outlet 1 of the acidic oxidation tower 21 connected to an inlet 2 of an alkaline washing and reduction tower 22, and an outlet 2 of the alkaline washing and reduction tower 22 connected to an inlet 3 of a blower 23 for discharging the purified gas flow. The acidic oxidation tower 21 and the alkaline washing and reduction tower 22 are wet chemical absorption towers as used in the prior art. The acidic oxidation tower 21, the alkaline washing and reduction tower 22, the blower 23, the electrolysis device 1 31, the electric heating device 32, and the electrolysis device 2 33 are connected by a pipeline 1.

[0035] Specifically, the acidic oxidation tower 21 is equipped with an acidic oxidation chamber connected to both the inlet and outlet. Inside the acidic oxidation chamber, from bottom to top, are a bottom storage area 211 and a spray area 213. The bottom storage area 211 and the spray area 213 are located within the acidic oxidation chamber between the inlet and outlet. A spray mechanism is installed in the spray area 213, and its inlet is connected to the bottom storage area 211. In this embodiment, the spray mechanism uses spray heads, and the number of spray heads can be adjusted according to actual usage requirements. The outlet of the acidic oxidation chamber is connected to the feeding hopper of the electrolysis device 31, the outlet of the feeding hopper is connected to the electrolysis device 31, and the electrolysis device 31 is connected to the inlet of the acidic oxidation chamber. The feeding hopper of the electrolysis device 31 is used to introduce reagents.

[0036] Specifically, the electrolysis device 31 is a diaphragm-less electrolysis device. It includes a diaphragm-less electrolytic cell. The feed port of the diaphragm-less electrolytic cell is connected to the inlet of the feed hopper, and the discharge port is connected to the inlet of the electric heating device 32. The outlet of the electric heating device 32 is connected to the bottom storage area 211 via a pump. The upper part of the diaphragm-less electrolytic cell also has a gas outlet, and the lower part has a waste liquid outlet. The bottom storage area 211 also has a lead-out line connected to the inlet of the feed hopper.

[0037] Specifically, the alkaline washing and reduction tower 22 is equipped with an alkaline washing and reduction chamber connected to the second air inlet and the second air outlet. Inside the alkaline washing and reduction chamber, from bottom to top, are a bottom liquid storage area 221 and a spray area 223. The bottom liquid storage area 221 and the spray area 223 are located inside the alkaline washing and reduction chamber between the second air inlet and the second air outlet. A spray mechanism 2 is installed in the spray area 223, and the inlet of the spray mechanism 2 is connected to the bottom liquid storage area 221 via a pump. In this embodiment, the spray mechanism 1 uses spray heads, and the number of spray heads is adjusted according to actual usage requirements. Furthermore, the outlet of the alkaline washing and reduction chamber is connected to the inlet of the electrolysis device 2 33. Liquid discharged from the anode side of the electrolysis device 2 33 is introduced into the bottom liquid storage area 211, and liquid discharged from the cathode side of the electrolysis device 2 33 is introduced into the bottom liquid storage area 221. An alkaline agent is introduced into the bottom liquid storage area 221.

[0038] Specifically, the electrolysis device 2 33 is a diaphragm electrolysis device, which is equipped with a diaphragm electrolysis cell, in which anion exchange membranes and cation exchange membranes are spaced apart; the outlet of the alkaline washing and reduction chamber introduces liquid into the area between the anion exchange membranes and cation exchange membranes; the anion exchange membranes and cation exchange membranes are provided on both sides of the diaphragm electrolysis cell with the diaphragm electrolysis cell, and are respectively separated into an anode side and a cathode side; the anode side of the electrolysis device 2 33 is connected to the bottom liquid storage area 1 211 through a pump, and the cathode side of the electrolysis device 2 33 is connected to the bottom liquid storage area 221 through a pump.

[0039] Furthermore, an additional water inlet pipe is connected to the anode side of the electrolysis device 233 via a branch pipe that enters the anode side of the pipe connected to the bottom liquid storage area 211; and an additional water inlet pipe is connected to the cathode side of the electrolysis device 23 via a branch pipe that enters the cathode side of the pipe connected to the bottom liquid storage area 221. Example 2

[0040] like Figures 1-3 As shown, this utility model discloses an electrolytic device treatment system suitable for waste gas purification, including: an acidic oxidation tower 21, with the waste gas to be purified introduced into its inlet 1; the outlet 1 of the acidic oxidation tower 21 is connected to the inlet 2 of an alkaline washing and reduction tower 22; the outlet 2 of the alkaline washing and reduction tower 22 is connected to the inlet 3 of a blower 23; and the blower 23 is used to discharge the purified gas flow. The acidic oxidation tower 21 and the alkaline washing and reduction tower 22 are wet chemical packed absorption towers as used in the prior art.

[0041] Specifically, the acidic oxidation tower 21 is equipped with an acidic oxidation chamber connected to both the inlet and outlet. The interior of the acidic oxidation chamber, from bottom to top, comprises a bottom storage area 211, a packing area 212, and a spray area 213. These three areas are located within the acidic oxidation chamber between the inlet and outlet. A spray mechanism is installed in the spray area 213, with its spray nozzles corresponding to those in the packing area 212. The inlet of the spray mechanism is connected to the bottom storage area 211 via a pump. In this embodiment, the spray mechanism uses spray heads, and the number of spray heads can be adjusted according to actual usage requirements. The outlet of the acidic oxidation chamber is connected to the feeding hopper of the electrolysis device 31, the outlet of the feeding hopper is connected to the electrolysis device 31, and the electrolysis device 31 is connected to the inlet of the acidic oxidation chamber. The feeding hopper of electrolysis unit 31 is used to introduce the reagent. The packing material in packing zone 212 is a porous packing material layer suitable for acidic oxidation reactions and environmentally friendly treatment, which is available in the prior art; the specific types and materials selected will not be listed or described in detail here, as long as the pore penetration reaction can be basically achieved.

[0042] Specifically, the electrolysis device 31 is a diaphragm-less electrolysis device. It includes a diaphragm-less electrolytic cell. The feed port of the diaphragm-less electrolytic cell is connected to the inlet of the feed hopper, and the discharge port is connected to the inlet of the electric heating device 32. The outlet of the electric heating device 32 is connected to the bottom storage area 211 via a pump. The upper part of the diaphragm-less electrolytic cell also has a gas outlet, and the lower part has a waste liquid outlet. The bottom storage area 211 also has a lead-out line connected to the inlet of the feed hopper.

[0043] Specifically, the alkaline washing and reduction tower 22 is equipped with an alkaline washing and reduction chamber connected to the second air inlet and the second air outlet. Inside the alkaline washing and reduction chamber, from bottom to top, are arranged a bottom liquid storage area 221, a packing area 222, and a spray area 223. The bottom liquid storage area 221, the packing area 222, and the spray area 223 are located inside the alkaline washing and reduction chamber between the second air inlet and the second air outlet. A second spraying mechanism is installed in the second spraying area 223. The spray nozzles of the second spraying mechanism correspond to those of the second packing area 222, and the inlet of the second spraying mechanism is connected to the bottom liquid storage area 221 via a pump. In this embodiment, the first spraying mechanism uses spray heads; the number of spray heads can be adjusted according to actual usage requirements. Furthermore, the outlet of the alkaline washing and reduction chamber is connected to the inlet of the electrolysis device 2 33. The liquid discharged from the anode side of the electrolysis device 2 33 is introduced into the bottom storage area 211, and the liquid discharged from the cathode side of the electrolysis device 2 33 is introduced into the bottom storage area 221. An alkaline agent is introduced into the bottom storage area 221. The packing material of the packing area 222 is a porous packing material layer suitable for alkaline washing reaction and environmentally friendly treatment, which is available in the prior art. The specific types and materials selected will not be listed or elaborated here, as long as the pore penetration reaction can be basically achieved.

[0044] Specifically, the electrolysis device 2 33 is a diaphragm electrolysis device, which is equipped with a diaphragm electrolysis cell, in which anion exchange membranes and cation exchange membranes are spaced apart; the outlet of the alkaline washing and reduction chamber introduces liquid into the area between the anion exchange membranes and cation exchange membranes; the anion exchange membranes and cation exchange membranes are provided on both sides of the diaphragm electrolysis cell with the diaphragm electrolysis cell, and are respectively separated into an anode side and a cathode side; the anode side of the electrolysis device 2 33 is connected to the bottom liquid storage area 1 211 through a pump, and the cathode side of the electrolysis device 2 33 is connected to the bottom liquid storage area 221 through a pump.

[0045] Specifically, the anode side of the electrolysis device 2 33 is connected to the pipeline connected to the bottom liquid storage area 211, and a branch line is also connected to the anode side water inlet pipe to introduce into the anode side of the electrolysis device 2 33; the cathode side of the electrolysis device 2 33 is connected to the pipeline connected to the bottom liquid storage area 221, and a branch line is also connected to the cathode side water inlet pipe to introduce into the cathode side of the electrolysis device 2 33. Example 3

[0046] like Figures 1-3 As shown, based on Example 2, the waste gas to be purified introduced into the inlet of the acidic oxidation tower 21 contains nitrogen oxides and hydrogen chlorine; the reagents introduced into the feed hopper of the electrolysis unit 31 include NaCl and NaOH; and the alkaline reagents introduced into the bottom storage zone 221 of the alkaline washing reduction tower 22 include NaHS. Furthermore, the liquid discharged from the outlet of the diaphragmless electrolytic cell of the electrolysis unit 31 is introduced into the electric heating device 32, and then the solution discharged after being added through the electric heating device 32 is pumped into the bottom storage zone 211 of the acidic oxidation tower 21. Furthermore, the gas from the outlet of the acidic oxidation tower 21 is introduced into the alkaline washing reduction chamber through the inlet of the alkaline washing reduction tower 22. Furthermore, the outlet of the bottom storage zone 221 of the alkaline washing reduction tower 22 introduces the aqueous solution into the area between the anion exchange membrane and the cation exchange membrane; through anion exchange membrane separation, the solution exported from the anode side is introduced into the bottom storage zone 211 of the acidic oxidation tower 21, and the solution exported through cation exchange membrane separation is introduced into the bottom storage zone 221 of the alkaline washing reduction tower 22; and the cathode and anode sides of the electrolysis device 33 respectively export gas. In this embodiment, the power for liquid fluids is achieved using the connection of pipes and pumps in the prior art, and the power for gas flow fluids is achieved using the connection of pipes and fans in the prior art; the specific connection relationships adopt conventional connection structures in the prior art, and the specific connection structures will not be described in detail here, as long as they can basically realize the flow or transportation of gas or liquid. Example 4

[0047] like Figures 1-3 As shown, based on Example 3, the liquid discharged from the diaphragmless electrolytic cell of electrolysis device 31 is a NaClO solution. This NaClO solution is introduced into the electric heating device 32, and then, after being added through the electric heating device (32), the discharged NaClO3 solution is pumped into the bottom storage area 211 of the acidic oxidation tower 21. The gas outlet of the acidic oxidation tower 21 introduces NO2-containing gas through the inlet of the alkaline washing and reduction tower 22 into the area between the anion exchange membrane and the cation exchange membrane, wherein the anion exchange membrane and the cation exchange membrane are products of the prior art. SO4 is separated by the anion exchange membrane. 2- The solution permeates to the anode side and is then exported through the anode side. The H2SO4 solution is then introduced into the bottom storage zone 211 of the acidic oxidation tower 21, where Na is separated by a cation exchange membrane. +The solution permeates to the cathode side and is then discharged through the cathode side. This NaOH solution is then introduced into the bottom storage area 221 of the alkaline washing reduction tower 22. O2 gas and H2 gas are discharged from the cathode and anode sides of the electrolysis device 33, respectively. In this embodiment, a wet chemical packed absorber tower with a two-stage oxidation and reduction process is used to treat waste gas containing NOx and HCl.

[0048] The workflow of an electrolysis device treatment system for waste gas purification according to this embodiment is as follows:

[0049] The exhaust gas to be purified is introduced into the inlet of the acidic oxidation tower 21. The exhaust gas passes through the reserved area between the bottom liquid storage area 211 and the packing area 212 of the acidic oxidation tower 21. The exhaust gas passes through the packing gaps in the packing area 212 and the spraying area 213, and reacts with the reagent liquid sprayed in the packing and the spraying area 213.

[0050] The gas from the acidic oxidation tower 21, after passing through the acidic oxygen, is introduced into the alkaline washing and reduction chamber of the alkaline washing and reduction tower 22. The liquid from the bottom storage area 211 of the acidic oxidation tower 21 is introduced into the feed port of the diaphragmless electrolytic cell of the electrolysis device 31 and connected to the inlet of the feed hopper. It mixes with the reagents added to the feed hopper to form a reagent mixture. The reagent mixture from the outlet of the diaphragmless electrolytic cell is heated by the electric heating device 32 and then introduced into the bottom storage area 211 via a pump. The diaphragmless electrolytic cell also has a gas outlet at the top and a waste liquid outlet at the bottom. Furthermore, the bottom storage area 211 of the acidic oxidation tower 21 also receives the acidic liquid discharged from the alkaline washing and reduction tower 22.

[0051] The gas that has undergone acidic oxidation in the acidic oxidation tower 21 is introduced into the alkaline washing and reduction tower 22. The gas then passes through the gaps in the packing zone 222 and reacts with the sprayed reagent solution in the spray zone 223 of the alkaline washing and reduction tower 22, and is then discharged as purified gas. The liquid outlet of the alkaline washing and reduction chamber introduces the reagent solution into the area between the anion exchange membrane and the cation exchange membrane. The components are separated by the anion exchange membrane and permeate to the anode side, and the acidic solution is discharged through the anode side and introduced into the bottom storage zone 211 of the acidic oxidation tower 21. The components are separated by the cation exchange membrane and permeate to the cathode side, and the alkaline solution is discharged through the cathode side and introduced into the bottom storage zone 221 of the alkaline washing and reduction tower 22. Gas is discharged from the cathode side and the anode side of the electrolysis device 23, respectively. The anode side and the cathode side are respectively connected to the anode electrode connected to the positive terminal of the power supply and the cathode electrode connected to the negative terminal of the power supply, and are respectively connected to the liquid in the cavity of the electrolysis device 23. The specific structural assembly and connection relationships adopt the assembly and connection relationships of existing electrolysis devices, and will not be described in detail here.

[0052] Furthermore, the exhaust gas to be purified introduced into the inlet of the acidic oxidation tower 21 is a gas containing nitrogen oxides and hydrogen chlorine; the reagents introduced into the feed hopper of the electrolysis unit 31 include NaCl and NaOH; and the alkaline reagents introduced into the bottom storage area 221 of the alkaline washing reduction tower 22 include NaHS.

[0053] Furthermore, the liquid discharged from the diaphragmless electrolytic cell of electrolysis unit 31 is a NaClO solution. This NaClO solution is introduced into the electric heating device 32, and then, after being added through the electric heating device 32, the discharged NaClO3 solution is pumped into the bottom storage zone 211 of the acidic oxidation tower 21. Furthermore, the gas outlet of the acidic oxidation tower 21 introduces NO2-containing gas through the gas inlet 2 of the alkaline washing reduction tower 22 into the alkaline washing reduction chamber.

[0054] Furthermore, the outlet of the bottom storage zone 221 of the alkaline washing reduction tower 22 introduces the solution into the area between the anion exchange membrane and the cation exchange membrane, where SO4 is separated by the anion exchange membrane. 2- The solution permeates to the anode side and is then exported through the anode side. The H2SO4 solution is then introduced into the bottom storage zone 211 of the acidic oxidation tower 21, where Na is separated by a cation exchange membrane. + The solution permeates to the cathode side and is then exported through the cathode side. The NaOH solution is then introduced into the bottom storage area 221 of the alkaline washing reduction tower 22, and O2 gas and H2 gas are exported from the cathode side and anode side of the electrolysis device 33, respectively.

[0055] Working principle:

[0056] An electrolytic device treatment system suitable for waste gas purification adopts a wet chemical packed absorption tower and a two-stage treatment process of oxidation and reduction; it improves the overall coordination of the purification system, and while meeting the efficiency and capacity requirements of purification treatment, it can also reduce the participation of external agents and the number of participation steps, and reduce the redundancy of the reaction mechanism.

[0057] The above specific embodiments are specific support for the proposed solution concept of this utility model, and should not be used to limit the protection scope of this utility model. Any equivalent changes or modifications made on the basis of this technical solution in accordance with the technical concept proposed by this utility model shall still fall within the protection scope of this utility model.

Claims

1. An electrolysis device treatment system suitable for waste gas purification, characterized in that, include: An acidic oxidation tower (21) is provided with an inlet 1 for introducing the waste gas to be purified, and an outlet 1 of the acidic oxidation tower (21) is connected to an inlet 2 of an alkaline washing and reduction tower (22), and an outlet 2 of the alkaline washing and reduction tower (22) discharges the treated gas. The acidic oxidation tower (21) is provided with an acidic oxidation chamber. The acidic oxidation chamber is provided with a bottom liquid storage area (211) and a spray area (213) located between the air inlet and the air outlet. The liquid outlet of the acidic oxidation chamber is connected to the feeding hopper of the electrolysis device (31). The discharge port of the feeding hopper is connected to the electrolysis device (31). The electrolysis device (31) is connected to the liquid inlet of the acidic oxidation chamber. The alkaline washing and reduction tower (22) is provided with an alkaline washing and reduction chamber. The alkaline washing and reduction chamber is provided with a bottom liquid storage area (221) and a spray area (223) located between the second air inlet and the second air outlet. The liquid outlet of the alkaline washing and reduction chamber is connected to the liquid inlet of the second electrolysis device (33). The liquid discharged from the anode side of the second electrolysis device (33) is introduced into the bottom liquid storage area (211), and the liquid discharged from the cathode side of the second electrolysis device (33) is introduced into the bottom liquid storage area (221).

2. The electrolysis device treatment system for waste gas purification according to claim 1, characterized in that: Inside the acidic oxidation chamber, from bottom to top, there are a bottom liquid storage area (211), a packing area (212), and a spray area (213); a spray mechanism is provided in the spray area (213), the spray nozzle of the spray mechanism corresponds to the packing area (212), and the inlet of the spray mechanism is connected to the bottom liquid storage area (211) through a pump; And / or, Inside the alkaline washing and reduction chamber, from bottom to top, there are a bottom liquid storage area two (221), a packing area two (222), and a spray area two (223); a spray mechanism two is provided in the spray area two (223), the spray nozzle of the spray mechanism two corresponds to the packing area two (222), and the inlet of the spray mechanism two is connected to the bottom liquid storage area two (221) through a pump.

3. The electrolysis device treatment system for waste gas purification according to claim 2, characterized in that: The electrolysis device (31) is a diaphragmless electrolysis device. The diaphragmless electrolysis device is equipped with a diaphragmless electrolysis cell. The feed port of the diaphragmless electrolysis cell is connected to the inlet of the feed hopper. The discharge port of the diaphragmless electrolysis cell is connected to the inlet of the electric heating device (32). The outlet of the electric heating device (32) is connected to the bottom liquid storage area (211) through a pump. The upper part of the diaphragmless electrolysis cell is also equipped with a gas outlet. The lower part of the diaphragmless electrolysis cell is also equipped with a waste liquid outlet.

4. The electrolysis device treatment system for waste gas purification according to claim 3, characterized in that: The second electrolysis device (33) is a diaphragm electrolysis device. The diaphragm electrolysis device is equipped with a diaphragm electrolysis cell, and an anion membrane and a cation membrane are spaced apart in the diaphragm electrolysis cell. The outlet of the alkaline washing and reduction chamber introduces liquid into the area between the anion membrane and the cation membrane. Anode electrode and cathode electrode are provided on both sides of the anion membrane and the cation membrane and between them and the diaphragm electrolysis cell, and are respectively separated into an anode side and a cathode side. The anode side of the second electrolysis device (33) is connected to the bottom liquid storage area (211) through a pump, and the cathode side of the second electrolysis device (33) is connected to the bottom liquid storage area (221) through a pump.

5. The electrolysis device treatment system for waste gas purification according to claim 4, characterized in that: The anode side of the second electrolysis device (33) is also connected to a water inlet pipe that enters the anode side of the bottom liquid storage area (211) through the pipe. The cathode side of the second electrolysis device (33) is also connected to a pipeline in the bottom liquid storage area (221) via a branch line leading into the cathode side water inlet pipeline.

6. The electrolysis device treatment system for waste gas purification according to claim 5, characterized in that: The bottom liquid storage area (211) also has a lead-out path that connects to the inlet of the feeding bin; The feeding chamber of the electrolysis device (31) is used to introduce the reagent, and the bottom storage area (221) is used to introduce the alkaline reagent.

7. The electrolysis device treatment system for waste gas purification according to claim 6, characterized in that: The acidic oxidation tower (21) and the alkaline washing reduction tower (22) are wet chemical packing absorption towers.

8. The electrolysis device treatment system for waste gas purification according to claim 7, characterized in that: The outlet 2 of the alkaline washing reduction tower (22) is connected to the inlet 3 of the blower (23), and the blower (23) is used to discharge the purified airflow.

9. The electrolysis device treatment system for waste gas purification according to claim 8, characterized in that: The gas to be purified introduced into the inlet of the acidic oxidation tower (21) is a gas containing nitrogen oxides and hydrogen chlorine. The reagents introduced into the feeding hopper of the electrolysis device (31) include NaCl and NaOH; The alkaline reagent introduced into the bottom storage zone 2 (221) of the alkaline washing reduction tower (22) includes NaHS.

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