Organic waste gas catalytic combustion equipment with good purification effect

Abstract

The utility model discloses organic waste gas catalytic combustion equipment with a good purification effect, and relates to the technical field of waste gas treatment equipment. The filter box is provided with an air inlet end and an air outlet end, the air outlet end of the filter box is communicated with a reaction tank, the top of the reaction tank is communicated with a first end of a first pipeline, a second end of the first pipeline is communicated with a change-over valve and a circulating box, and the inside of the circulating box is divided into a first chamber and a second chamber through a partition plate; the first chamber and the second chamber are respectively communicated with the change-over valve through a first bent pipe and a second bent pipe, the bottom of the first chamber is communicated with a third exhaust pipe, the bottom of the second chamber is communicated with a second exhaust pipe and a sucking pump, an air inlet of the sucking pump is communicated with the third exhaust pipe, and an exhaust port of the sucking pump is communicated with the reaction tank through a second pipeline. According to the utility model, through the arrangement of the sucking pump and the circulating box, gas in the first chamber can be conveyed into the reaction tank again for reaction, so that the reaction times and the catalytic effect on waste gas are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment equipment, and in particular relates to catalytic combustion equipment for organic waste gas with good purification effect. Background Art

[0002] Organic waste gas catalytic combustion equipment is an environmentally friendly equipment used to treat organic waste gas. It is mainly used in many industries such as chemical, coating, printing, electronics, and pharmaceuticals. It can effectively treat waste gas containing hydrocarbons (such as benzene, toluene, xylene, etc.), alcohols, aldehydes, ketones and other organic pollutants, and convert these harmful organic components into harmless carbon dioxide and water through catalytic combustion, thereby reducing the pollution of organic waste gas to the atmospheric environment. However, traditional organic waste gas treatment equipment has a single structure, and when treating waste gas, it often only performs a simple treatment or filtration on the organic waste gas, with general purification effect, and causes serious pollution to the environment.

[0003] A Chinese patent with patent publication number CN213433773U discloses an organic waste gas treatment device with good purification effect. The device drives the reaction liquid to spray the waste gas through a circulating pump, thereby increasing the contact area with the waste gas, and then purifies the organic waste gas through multi-layer purification and filtration. This effectively improves the purification effect of the organic waste gas treatment device, so that the organic waste gas is fully purified and the pollution of the environment by industrial production is reduced. However, the waste gas of the above-mentioned device can only react once in the reaction box, which easily causes the waste gas reaction to be insufficient, resulting in poor purification effect of the waste gas.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a catalytic combustion device for organic waste gas with good purification effect, and solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A catalytic combustion device for organic waste gas with good purification effect comprises: a filter box having an air inlet end and an exhaust end, the exhaust end of the filter box being connected to a reaction tank, the top of the reaction tank being connected to a first end of a first pipe, and the second end of the first pipe being connected to a switching valve;

[0008] A circulation box, the interior of which is divided into a first chamber and a second chamber by a partition, the first chamber and the second chamber being connected to the switching valve through a first elbow and a second elbow, respectively, the bottom of the first chamber being connected to a third exhaust pipe, and the bottom of the second chamber being connected to a second exhaust pipe;

[0009] An air pump, the air inlet of which is connected to the third exhaust pipe, and the exhaust port of the air pump is connected to the reaction tank through a second pipeline.

[0010] Optionally, a plurality of condensation plates arranged relatively staggered are fixedly connected in the second chamber, and the plurality of condensation plates form a plurality of N-shaped channels interconnected in the second chamber.

[0011] Optionally, a drain pipe communicating with the second chamber is fixedly connected to the bottom of the circulation box, and a valve is provided on the drain pipe.

[0012] Optionally, a filter assembly is provided inside the filter box, and the filter assembly includes a first filter screen, a sponge layer, an activated carbon plate, a breathable membrane and a second filter screen which are sequentially arranged from the air inlet end to the exhaust end of the filter box.

[0013] Optionally, the diameter of the filter holes on the first filter screen is larger than the diameter of the filter holes on the second filter screen.

[0014] Optionally, a liquid storage tank is further included, which is connected to the second exhaust pipe. The second exhaust pipe is an L-shaped structure. The second exhaust pipe extends to the bottom of the liquid storage tank. The top of the liquid storage tank is connected to the first exhaust pipe.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0016] 1. By providing a partition, a conversion valve, and an air pump, the air pump and the circulation box can be used to transport the gas inside the first chamber back to the reaction tank for reaction, thereby increasing the number of reactions and catalytic effect of the exhaust gas. The exhaust gas that may not be completely purified after a catalytic combustion reaction can be returned to the reaction tank for further catalytic combustion reaction, continuously improving the purification degree, improving the purification effect and quality of the exhaust gas, and can convert organic pollutants in the exhaust gas into harmless substances to the greatest extent, further improving the purification degree of the organic exhaust gas, ensuring that the discharged gas is cleaner and better meeting the strict environmental emission requirements;

[0017] 2. By providing a filter component, the filter component can effectively remove particulate impurities, some gaseous impurities and organic components in the exhaust gas, greatly improving the initial purification effect of the exhaust gas, providing purer exhaust gas for subsequent catalytic combustion reactions, and helping to extend the service life of the catalyst and improve the efficiency of catalytic combustion.

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] In the picture:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the circulation box and liquid storage tank of the utility model;

[0024] Figure 4 This is a schematic structural diagram of the filter assembly of the present invention.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1. Reaction tank; 2. Air inlet end; 3. First pipeline; 4. Second pipeline; 5. Vacuum pump; 6. Circulation box; 7. Conversion valve; 8. Valve; 9. Filter assembly; 91. First filter screen; 92. Second filter screen; 93. Sponge layer; 94. Activated carbon plate; 95. Breathable membrane; 10. First elbow; 11. Second elbow; 12. Liquid storage tank; 13. First exhaust pipe; 14. Second exhaust pipe; 15. Drain pipe; 16. Third exhaust pipe; 17. First chamber; 18. Second chamber; 19. Condensation plate; 20. Filter box; 21. Exhaust end.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] See also Figure 1-4As shown, in this embodiment, a catalytic combustion device for organic waste gas with good purification effect is provided, including a filter box 20, which has an air inlet end 2 and an exhaust end 21, the exhaust end 21 of the filter box 20 is connected to the reaction tank 1, the top of the reaction tank 1 is connected to the first end of the first pipe 3, the second end of the first pipe 3 is connected to the conversion valve 7, the circulation box 6, the interior of which is divided into a first chamber 17 and a second chamber 18 by a partition, the first chamber 17 and the second chamber 18 are connected to the conversion valve 7 through the first bend 10 and the second bend 11 respectively, the bottom of the first chamber 17 is connected to the third exhaust pipe 16, the bottom of the second chamber 18 is connected to the second exhaust pipe 14, the air pump 5, the air inlet of which is connected to the third exhaust pipe 16, and the exhaust port of the air pump 5 is connected to the reaction tank 1 through the second pipe 4.

[0030] Specifically, the organic waste gas first enters from the air inlet end 2 of the filter box 20 and is discharged into the reaction tank 1 along its exhaust end 21. The waste gas entering the reaction tank 1 undergoes a catalytic combustion reaction in the tank. During this process, the reaction tank 1 should be equipped with a corresponding catalyst (such as a common precious metal or non-precious metal oxide catalyst, etc.). The organic pollutants in the waste gas undergo an oxidation reaction with oxygen under the action of the catalyst under suitable temperature conditions (preheating by an external heating device or maintaining the temperature by using its own reaction heat to ensure a suitable reaction temperature), and the organic components are converted into harmless substances such as carbon dioxide and water. The gas after the catalytic combustion reaction passes through the first pipe 3 connected to the top of the reaction tank 1 and flows to the conversion valve 7 connected to the other end of the first pipe 3. By adjusting the conversion valve 7 and connecting it to the first elbow 10, the gas is discharged to the first chamber. 17, the vacuum pump 5 is started at this time, and the vacuum pump 5 transports the gas inside the first chamber 17 back to the reaction tank 1 for reaction, thereby increasing the number of reactions and catalytic effect on the exhaust gas, so that the exhaust gas that may not be completely purified after a catalytic combustion reaction can return to the reaction tank 1 for further catalytic combustion reaction, and continuously improve the degree of purification. After that, the air intake operation of the filter box 20 is stopped, and the conversion valve 7 is adjusted to be connected with the second bend pipe 11. At this time, the exhaust gas that has undergone multiple reactions enters the second chamber 18 and is then discharged along the second exhaust pipe 14. The overall operation steps are simple, which improves the purification effect and quality of the exhaust gas, can convert organic pollutants in the exhaust gas into harmless substances to the greatest extent, further improves the purification degree of the organic exhaust gas, ensures that the discharged gas is cleaner, and better meets the strict environmental protection emission requirements.

[0031] In this embodiment, if Figure 3As shown, a plurality of relatively staggered condensing plates 19 are fixedly connected in the second chamber 18, and the plurality of condensing plates 19 form a plurality of mutually interconnected N-shaped channels in the second chamber 18. Specifically, when the gas enters the second chamber 18, it flows in the plurality of mutually interconnected N-shaped channels formed between the plurality of relatively staggered condensing plates 19. Since the temperature of the condensing plates 19 is lower than the exhaust gas temperature, condensable components such as water vapor in the exhaust gas condense when in contact with the condensing plates 19 or when the temperature is lowered, thereby changing from gaseous to liquid, thereby achieving further separation of some components in the exhaust gas.

[0032] In this embodiment, if Figure 2 and Figure 3 As shown, a drain pipe 15 connected to the second chamber 18 is fixedly connected to the bottom of the circulation box 6, and a valve 8 is provided on the drain pipe 15. Specifically, when the condensable components in the exhaust gas condense into liquid at the condensation plate 19, the liquid gathers at the bottom of the second chamber 18 under the action of gravity. By opening the valve 8 on the drain pipe 15, the liquid can be discharged from the circulation box 6.

[0033] In this embodiment, if Figure 3 and Figure 4 As shown, a filter assembly 9 is provided inside the filter box 20, and the filter assembly 9 includes a first filter screen 91, a sponge layer 93, an activated carbon plate 94, a breathable membrane 95 and a second filter screen 92, which are arranged in sequence from the air inlet end 2 to the exhaust end 21 of the filter box 20. The diameter of the filter hole on the first filter screen 91 is larger than the diameter of the filter hole on the second filter screen 92. Specifically, after the exhaust gas enters the filter box 20, it first passes through the first filter screen 91, which has a larger filter hole and can intercept large particles of impurities in the exhaust gas, and then passes through the sponge layer 93, which can absorb some gaseous impurities and small particles. Then the exhaust gas passes through the activated carbon plate 94, and the porous structure of the activated carbon can absorb organic waste gas. The organic components in the exhaust gas can be further purified. The breathable membrane 95 can play a certain isolation and filtering role to prevent substances such as activated carbon particles from flowing out with the air flow. Finally, the exhaust gas passes through the second filter 92. The second filter 92 has smaller pores and finely filters the exhaust gas again to intercept small particulate impurities that may have been missed in the previous filtering process. Through the combination of multiple filter materials, a multi-level filtering structure is formed, which can effectively remove particulate impurities, some gaseous impurities and organic components in the exhaust gas, greatly improving the initial purification effect of the exhaust gas, providing purer exhaust gas for subsequent catalytic combustion reactions, and helping to extend the service life of the catalyst and improve the efficiency of catalytic combustion.

[0034] In this embodiment, if Figure 1 、 Figure 2 and Figure 3As shown, it also includes a liquid storage tank 12, which is connected to the second exhaust pipe 14. The second exhaust pipe 14 is an L-shaped structure. The second exhaust pipe 14 extends to the bottom of the liquid storage tank 12. The top of the liquid storage tank 12 is connected to the first exhaust pipe 13. Specifically, when the gas that has been condensed in the second chamber 18 and other treatments enters the liquid storage tank 12 through the second exhaust pipe 14, the gas flows upward from the bottom of the liquid storage tank 12. Since the flow path of the gas in the liquid storage tank 12 changes, some possible residual impurities or liquid-soluble components will be further separated in this process, and finally the gas is discharged from the first exhaust pipe 13 at the top of the liquid storage tank 12.

[0035] Working principle:

[0036] The organic waste gas first enters from the air inlet end 2 of the filter box 20, and is discharged into the reaction tank 1 along its exhaust end 21 after being filtered by the filter assembly 9. The waste gas entering the reaction tank 1 undergoes a catalytic combustion reaction in the tank. During this process, the reaction tank 1 should be equipped with a corresponding catalyst (such as a common precious metal or non-precious metal oxide catalyst, etc.). Under suitable temperature conditions (preheating by an external heating device or maintaining the temperature by using its own reaction heat to ensure a suitable reaction temperature), the organic pollutants in the waste gas undergo an oxidation reaction with oxygen under the action of the catalyst, and the organic components are converted into harmless substances such as carbon dioxide and water. The gas after the catalytic combustion reaction passes through the first pipe 3 connected to the top of the reaction tank 1 and flows to the conversion valve 7 connected to the other end of the first pipe 3. By adjusting the conversion valve 7 and connecting to the first elbow 10, the gas is discharged into the first chamber 17. At this time, the vacuum pump 5 is started, and the vacuum pump 5 re-transports the gas inside the first chamber 17 to the reaction tank 1 for reaction, thereby increasing the number of reactions of the waste gas and the catalytic effect. As a result, the exhaust gas that may not be completely purified after a catalytic combustion reaction can return to the reaction tank 1 for further catalytic combustion reaction, continuously improving the degree of purification. After that, the air intake operation of the filter box 20 is stopped, and the conversion valve 7 is adjusted to be connected with the second bend pipe 11. At this time, the exhaust gas that has undergone multiple reactions enters the second chamber 18 and is then discharged along the second exhaust pipe 14. When the gas that has been condensed and treated in the second chamber 18 enters the liquid storage tank 12 through the second exhaust pipe 14, the gas flows upward from the bottom of the liquid storage tank 12. Since the flow path of the gas in the liquid storage tank 12 changes, some impurities or liquid-soluble components that may remain will be further separated in this process. Finally, the gas is discharged from the first exhaust pipe 13 at the top of the liquid storage tank 12. The overall operation steps are simple, which improves the purification effect and quality of the exhaust gas, can convert organic pollutants in the exhaust gas into harmless substances to the greatest extent, further improves the purification degree of the organic exhaust gas, ensures that the discharged gas is cleaner, and better meets the strict environmental emission requirements.

[0037] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A catalytic combustion device for organic waste gas with good purification effect, characterized in that: include: A filter box (20) having an air inlet end (2) and an air outlet end (21), wherein the air outlet end (21) of the filter box (20) is connected to a reaction tank (1), the top of the reaction tank (1) is connected to a first end of a first pipe (3), and the second end of the first pipe (3) is connected to a switching valve (7); A circulation box (6) is divided into a first chamber (17) and a second chamber (18) by a partition plate. The first chamber (17) and the second chamber (18) are connected to the switching valve (7) through a first elbow (10) and a second elbow (11), respectively. The bottom of the first chamber (17) is connected to a third exhaust pipe (16), and the bottom of the second chamber (18) is connected to a second exhaust pipe (14). An air pump (5) has an air inlet connected to the third exhaust pipe (16), and an exhaust port of the air pump (5) is connected to the reaction tank (1) through a second pipe (4).

2. The catalytic combustion equipment for organic waste gas with good purification effect according to claim 1 is characterized in that: A plurality of condensation plates (19) arranged relatively staggered are fixedly connected in the second chamber (18), and the plurality of condensation plates (19) form a plurality of N-shaped channels communicating with each other in the second chamber (18).

3. The catalytic combustion equipment for organic waste gas with good purification effect according to claim 2 is characterized in that: A drain pipe (15) communicating with the second chamber (18) is fixedly connected to the bottom of the circulation box (6), and a valve (8) is provided on the drain pipe (15).

4. The catalytic combustion equipment for organic waste gas with good purification effect according to claim 1 is characterized in that: A filter assembly (9) is provided inside the filter box (20), and the filter assembly (9) comprises a first filter screen (91), a sponge layer (93), an activated carbon plate (94), a breathable membrane (95), and a second filter screen (92) which are sequentially arranged along the air inlet end (2) to the air outlet end (21) of the filter box (20).

5. The catalytic combustion equipment for organic waste gas with good purification effect according to claim 4 is characterized in that: The diameter of the filter holes on the first filter screen (91) is greater than the diameter of the filter holes on the second filter screen (92).

6. The catalytic combustion equipment for organic waste gas with good purification effect according to claim 1 is characterized in that: The invention also includes a liquid storage tank (12), which is connected to the second exhaust pipe (14). The second exhaust pipe (14) is an L-shaped structure. The second exhaust pipe (14) extends to the bottom of the liquid storage tank (12). The top of the liquid storage tank (12) is connected to the first exhaust pipe (13).

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