Waste gas treatment equipment

Abstract

The utility model provides waste gas treatment equipment which comprises a dust removal device comprising an input pipe, an output pipe, a main pipe and a standby pipe, the input pipe and the output pipe are arranged at intervals, the first end of the main pipe is connected with the input pipe, the second end of the main pipe is connected with the first end of the output pipe, and the first end of the standby pipe is connected with the input pipe; the second end of the standby pipe is connected with the first end of the output pipe, the dust removal device further comprises a first dust remover arranged on the main pipe, and the dust removal device further comprises a second dust remover arranged on the standby pipe; the incineration device is arranged at the downstream of the dust removal device and is connected with the second end of the output pipe; the cooling and purifying device is arranged at the downstream of the incineration device and is connected with the incineration device; and the spraying device is arranged at the downstream of the cooling and purifying device and is connected with the cooling and purifying device. According to the technical scheme, the problem that the work progress is affected when a dust removal device in the prior art is shut down due to faults is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment device. Background Art

[0002] The waste gas treatment equipment in the related art mainly includes a dust removal device, an incineration device, a cooling and purification device, and a spray device, which are connected together through pipes and valves.

[0003] The dust removal device includes a dust collector with a filter medium for capturing solid particles in the exhaust gas. The incineration device is used to burn the captured solid particles and convert them into ash or gas. The cooling and purification device is used to reduce the temperature of the exhaust gas and perform chemical purification to remove harmful gases in the exhaust gas. The spraying device is used to spray water or chemical liquid into the exhaust gas to humidify the exhaust gas and remove particles and harmful gases therein.

[0004] The waste gas first passes through the dust removal device to capture solid particles, then enters the incineration device for combustion treatment, then passes through the cooling and purification device for temperature reduction and chemical purification, and finally passes through the spray device for humidification and re-purification. These components work together to achieve the treatment and purification of organic waste gas.

[0005] However, when the dust removal device fails and stops working, the dust collector needs to be repaired. At this time, the downstream incineration device, cooling and purification device and spraying device all stop working, affecting the progress of the work. Utility Model Content

[0006] The main purpose of the utility model is to provide an exhaust gas treatment device to solve the problem in the related art that the dust removal device fails and stops, which affects the work progress.

[0007] In order to achieve the above-mentioned purpose, the utility model provides an exhaust gas treatment equipment, including: a dust removal device, including an input pipe, an output pipe, a main pipe and a spare pipe, the input pipe and the output pipe are arranged at intervals, the first end of the main pipe is connected to the input pipe, the second end of the main pipe is connected to the first end of the output pipe, the first end of the spare pipe is connected to the input pipe, and the second end of the spare pipe is connected to the first end of the output pipe, the dust removal device also includes a first dust collector arranged on the main pipe, and the dust removal device also includes a second dust collector arranged on the spare pipe; an incineration device, which is arranged downstream of the dust removal device and connected to the second end of the output pipe; a cooling and purification device, which is arranged downstream of the incineration device and connected to the incineration device; a spray device, which is arranged downstream of the cooling and purification device and connected to the cooling and purification device.

[0008] Furthermore, the first dust collector includes a first cyclone dust collector and a first metal filter bag dust collector which are arranged at intervals, the second dust collector includes a second cyclone dust collector and a second metal filter bag dust collector which are arranged at intervals, and heating sleeves are arranged on the outside of the main pipe and the outside of the spare pipe.

[0009] Furthermore, the incineration device includes an incinerator and a blower connected to the incinerator, the cooling and purification device includes a hot air heat exchanger and a cooling tower arranged downstream of the hot air heat exchanger, the input end of the incinerator is connected to the second end of the output pipe, the output end of the incinerator is connected to the input end of the hot air heat exchanger, the output end of the hot air heat exchanger is connected to the input end of the cooling tower, the output end of the cooling tower is connected to the spray device, hot air inlet and hot air outlet are arranged at intervals on the heating sleeve, multiple first dust collectors and multiple second dust collectors are located between the hot air inlet and the hot air outlet, the hot air heat exchanger is provided with an air outlet connected to the hot air inlet, and the blower is provided with an air inlet connected to the hot air outlet.

[0010] Furthermore, a heating element is disposed around the outer side of each first dust collector and each second dust collector.

[0011] Furthermore, a heat-insulating layer is provided on the outer side of the heating element.

[0012] Furthermore, the incineration device includes an incinerator and a flame arrester, the flame arrester is connected between the input end of the incinerator and the second end of the output pipe, and the output end of the incinerator is connected to the cooling and purification device.

[0013] Furthermore, the flame arrester is arranged in parallel in plurality.

[0014] Furthermore, the cooling and purification device includes a water bath cyclone dust collector, a hot air heat exchanger, a cooling tower and a filter which are connected in sequence. The input end of the water bath cyclone dust collector is connected to the incineration device, and the output end of the filter is connected to the spraying device.

[0015] Furthermore, the cooling and purification device also includes a dry reactor and a bag filter connected in sequence, the input end of the dry reactor is connected to the output end of the filter, and the output end of the bag filter is connected to the spray device.

[0016] Furthermore, the spray device includes a plurality of spray towers connected in series, the input end of the first spray tower is connected to the cooling and purification device, and the exhaust gas treatment equipment also includes a chimney connected to the output end of the last spray tower.

[0017] Applying the technical solution of the utility model, the waste gas treatment equipment includes: a dust removal device, an incineration device, a cooling and purification device and a spray device. The dust removal device includes an input pipe, an output pipe, a main pipe and a spare pipe. The input pipe and the output pipe are arranged at intervals, the first end of the main pipe is connected to the input pipe, the second end of the main pipe is connected to the first end of the output pipe, the first end of the spare pipe is connected to the input pipe, and the second end of the spare pipe is connected to the first end of the output pipe. The dust removal device also includes a first dust collector arranged on the main pipe, and the dust removal device also includes a second dust collector arranged on the spare pipe. The incineration device is arranged downstream of the dust removal device and connected to the second end of the output pipe. The cooling and purification device is arranged downstream of the incineration device and connected to the incineration device. The spray device is arranged downstream of the cooling and purification device and connected to the cooling and purification device. In this way, when the first dust collector on the main pipe fails and is overhauled, the second dust collector on the spare pipe can work normally, and the downstream incineration device, cooling and purification device and spray device can also work normally, without affecting the normal work progress. Therefore, the technical solution of the present application effectively solves the problem of affecting the work progress when the dust removal device fails and stops in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A connection diagram of an embodiment of an exhaust gas treatment device according to the utility model is shown;

[0020] Figure 2 Shows Figure 1 An enlarged schematic diagram of the exhaust gas treatment equipment at A;

[0021] Figure 3 Shows Figure 1 An enlarged schematic diagram of a waste gas treatment device at B;

[0022] Figure 4 Shows Figure 1 An enlarged schematic diagram of the exhaust gas treatment equipment at C;

[0023] Figure 5 Shows Figure 1 An enlarged schematic diagram of point D of the exhaust gas treatment equipment.

[0024] The above drawings include the following reference numerals:

[0025] 10. Dust removal device; 11. Input pipe; 12. Output pipe; 13. Main pipe; 131. First dust collector; 14. Spare pipe; 141. Second dust collector; 15. Heating jacket; 151. Hot air inlet; 152. Hot air outlet; 16. Fan;

[0026] 20. Incineration device; 21. Incinerator; 22. Blower; 23. Flame arrester;

[0027] 30. Cooling and purification device; 31. Hot air heat exchanger; 32. Cooling tower; 33. Water bath cyclone dust collector; 31. Hot air heat exchanger; 32. Cooling tower; 34. Filter; 35. Dry reactor; 36. Bag dust collector; 37. Heater;

[0028] 40. Spraying device; 41. Spraying tower;

[0029] 50. Chimney. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0033] like Figures 1 to 5 As shown, the present application provides an exhaust gas treatment device, and an embodiment of the exhaust gas treatment device includes: a dust removal device 10, an incineration device 20, a cooling and purification device 30 and a spray device 40. The dust removal device 10 includes an input pipe 11, an output pipe 12, a main pipe 13 and a spare pipe 14. The input pipe 11 and the output pipe 12 are arranged at intervals, the first end of the main pipe 13 is connected to the input pipe 11, the second end of the main pipe 13 is connected to the first end of the output pipe 12, the first end of the spare pipe 14 is connected to the input pipe 11, and the second end of the spare pipe 14 is connected to the first end of the output pipe 12. The dust removal device 10 also includes a first dust collector 131 arranged on the main pipe 13, and the dust removal device 10 also includes a second dust collector 141 arranged on the spare pipe 14. The incineration device 20 is arranged downstream of the dust removal device 10 and connected to the second end of the output pipe 12. The cooling and purification device 30 is arranged downstream of the incineration device 20 and connected to the incineration device 20. The spray device 40 is arranged downstream of the cooling and purification device 30 and connected to the cooling and purification device 30.

[0034] By applying the technical solution of this embodiment, when the first dust collector 131 on the main pipe 13 fails and is under maintenance, the second dust collector 141 on the spare pipe 14 can work normally, and the downstream incineration device 20, cooling and purification device 30 and spray device 40 can also work normally, without affecting the normal work progress. Therefore, the technical solution of this embodiment effectively solves the problem of affecting the work progress when the dust removal device fails and stops in the related art.

[0035] In this embodiment, two fans 16 connected in parallel are arranged between the incineration device 20 and the output pipe 12 to provide power to transport the exhaust gas to the incineration device 20 .

[0036] like Figures 1 to 4As shown, the first dust collector 131 includes a first cyclone dust collector and a first metal filter bag dust collector arranged at intervals, and the second dust collector 141 includes a second cyclone dust collector and a second metal filter bag dust collector arranged at intervals, and a heating sleeve 15 is provided on the outside of the main pipe 13 and the outside of the spare pipe 14. The arrangement of the heating sleeve 15 enables the hot air flowing therein to heat the main pipe 13 and the spare pipe 14, ensuring that the organic matter in the exhaust gas does not condense and liquefy, and avoiding the organic matter in the exhaust gas and solid powder particles from mixing and muddying to block the main pipe 13 and the spare pipe 14. The above-mentioned first cyclone dust collector and the second cyclone dust collector can both use the centrifugal force generated by the rotating airflow to separate the dust particles in the exhaust gas.

[0037] The first cyclone dust collector and the second cyclone dust collector mentioned above both include an air inlet pipe, an exhaust pipe, a cylinder, a cone and an ash discharge valve. The air inlet pipe is located on the side or top of the first cyclone dust collector or the second cyclone dust collector and is used to introduce exhaust gas. The cylinder is the main part of the first cyclone dust collector or the second cyclone dust collector, and a rotating airflow is formed inside, and the heavier solid powder particles in the organic waste gas are separated by centrifugal force. The cone is located below the cylinder to collect the separated dust. The exhaust pipe is located at the top of the cone and is used to discharge clean gas. The ash discharge valve is used to regularly discharge the dust collected in the cone. In this way, after the exhaust gas enters from the air inlet pipe, it rotates in the cylinder, and the dust particles are thrown to the cylinder wall due to the centrifugal force, and move down along the wall to the bottom of the cone, and the clean gas is discharged from the exhaust pipe. The first cyclone dust collector or the second cyclone dust collector is suitable for capturing larger particles of dust, with a simple structure and easy maintenance.

[0038] The functions of the first metal filter bag dust collector and the second metal filter bag dust collector are similar to those of the bag dust collector, but due to the use of metal filter bags, it can be used to separate finer solid powder particles in organic waste gas and withstand higher temperatures and harsher chemical environments. The structures of the first metal filter bag dust collector and the second metal filter bag dust collector are similar to those of the bag dust collector, but the filter bags are made of metal wire mesh, which has higher wear resistance and high temperature resistance. The metal filter bags are usually woven from stainless steel or other corrosion-resistant materials to form a mesh structure with micropores. Except for the difference in filter bag materials, the other components of the metal filter bag dust collector are similar to those of the bag dust collector.

[0039] like Figures 1 to 4As shown, the incineration device 20 includes an incinerator 21 and a blower 22 connected to the incinerator 21. The cooling and purification device 30 includes a hot air heat exchanger 31 and a cooling tower 32 arranged downstream of the hot air heat exchanger 31. The input end of the incinerator 21 is connected to the second end of the output pipe 12, the output end of the incinerator 21 is connected to the input end of the hot air heat exchanger 31, the output end of the hot air heat exchanger 31 is connected to the input end of the cooling tower 32, and the output end of the cooling tower 32 is connected to the spray device 40. The heating jacket 15 is provided with a hot air inlet 151 and a hot air outlet 152 at intervals, a plurality of first dust collectors 131 and a plurality of second dust collectors 141 are all located between the hot air inlet 151 and the hot air outlet 152, the hot air heat exchanger 31 is provided with an air outlet connected to the hot air inlet 151, and the blower 22 is provided with an air inlet connected to the hot air outlet 152. After the exhaust gas passes through multiple first dust collectors 131 and multiple second dust collectors 141 for dust removal, it enters the incinerator 21. The incinerator 21 is used to incinerate organic matter in the exhaust gas. When the incinerated exhaust gas enters the hot air heat exchanger 31 and the cooling tower 32, the cold air sucked by the hot air heat exchanger 31 conducts heat conduction and heat absorption to reduce the temperature of the exhaust gas. The cooling tower 32 is used for cold water heat conduction and heat absorption to further reduce the temperature of the exhaust gas and prevent the generation of dioxins. It has the advantages of stable cooling, high efficiency, safety, and environmental friendliness. In this process, the hot air generated by the working heat exchange of the hot air heat exchanger 31 enters the heating jacket 15 through the hot air inlet 151. The hot air flows in the heating jacket 15 and heats the main pipe 13 and the spare pipe 14 to ensure that the organic matter in the exhaust gas does not condense and liquefy, and avoids the organic matter in the exhaust gas and solid powder particles mixing and muddying to block the main pipe 13 and the spare pipe 14. After heating, it goes to the blower 22 from the hot air outlet 152.

[0040] like Figures 1 to 4 As shown, a heating element is wound around the outside of each first dust collector 131 and each second dust collector 141. The heating element can ensure that the organic matter in the exhaust gas of each first dust collector 131 and each second dust collector 141 does not condense and liquefy, and avoids the organic matter in the exhaust gas and solid powder particles from mixing and slurrying to block each first dust collector 131 and each second dust collector 141. The heating element is preferably a heating wire.

[0041] like Figures 1 to 4 As shown, the outer side of the heating element is provided with a heat-insulating layer. The heat-insulating layer can keep each first dust collector 131 and each second dust collector 141 warm on the one hand, and protect the heating element on the other hand.

[0042] like Figures 1 to 4As shown, the exhaust gas from the dust removal device 10 can go to the incineration device 20. The incineration device 20 includes an incinerator 21 and a flame arrester 23. The flame arrester 23 is connected between the input end of the incinerator 21 and the second end of the output pipe 12, and the output end of the incinerator 21 is connected to the cooling and purification device 30. The incinerator 21 uses natural gas to incinerate the exhaust gas. The setting of the flame arrester 23 can provide safety protection for the incinerator 21 to avoid fire accidents. The flame arrester 23 can adopt the flame arrester with application publication number CN112007304A.

[0043] like Figures 1 to 4 As shown, in order to further provide safety protection for the incinerator 21 and avoid fire accidents, a plurality of flame arresters 23 are arranged in parallel.

[0044] like Figures 1 to 4 As shown, the waste gas from the dust removal device 10 enters the incineration device 20 and then goes to the cooling purification device 30. The cooling purification device 30 includes a water bath cyclone dust collector 33, a hot air heat exchanger 31, a cooling tower 32 and a filter 34 connected in sequence. The input end of the water bath cyclone dust collector 33 is connected to the incineration device 20, and the output end of the filter 34 is connected to the spray device 40. The water bath cyclone dust collector 33 is used for water evaporation and heat absorption to initially reduce the temperature of the waste gas, the hot air heat exchanger 31 is used for cold air heat conduction and heat absorption to further reduce the temperature of the waste gas, and the circulating water flowing in the cooling tower 32 is used for cold water heat conduction and heat absorption after circulation to further reduce the temperature of the waste gas and prevent the generation of dioxins. The above-mentioned water bath cyclone dust collector 33 combines the characteristics of a cyclone dust collector and a water bath dust collector. It includes a water inlet pipe, an air inlet pipe, a cyclone cylinder, a water bath part, an exhaust pipe and an ash discharge valve. The water inlet pipe is used to supply tap water to the water bath to form a water film or layer. The exhaust gas is introduced into the air inlet pipe, and the exhaust gas rotates in the cyclone barrel. The dust particles are thrown to the barrel wall and captured by the water film. The exhaust pipe discharges clean gas, and the dust discharge valve is used to regularly discharge the dust deposited at the bottom of the water bath. In this way, the dust in the dusty exhaust gas is removed by the cyclone effect and the cooling and cleaning effects of water. The exhaust gas rotates in the cyclone barrel, and the dust particles are thrown to the barrel wall and contact with the water film, captured by the water and flow to the bottom with the water. At the same time, the presence of tap water also helps to cool the exhaust gas and neutralize harmful exhaust gas, and the clean gas is discharged through the exhaust pipe.

[0045] like Figures 1 to 4As shown, the cooling purification device 30 also includes a dry reactor 35 and a bag filter 36 connected in sequence, the input end of the dry reactor 35 is connected to the output end of the filter 34, and the output end of the bag filter 36 is connected to the spray device 40, so that the cooling purification device 30 can remove organic matter, acid and dust from the waste gas again. The cooling purification device 30 also includes a heater 37 connected between the hot air inlet 151 and the air outlet, and the filter 34 is used to filter the organic matter in the residual small amount of waste gas. The filter 34 is preferably an activated carbon adsorption box for adsorbing the organic matter in the residual small amount of waste gas. The dry reactor 35 uses slaked lime to absorb acidic inorganic matter in the waste gas, the bag filter 36 is used to separate solid powder particles in the waste gas, and the heater 37 is used to heat the heat transfer air of the hot air heat exchanger to generate hot air, which is a heat source for providing hot air to the hot air inlet 151.

[0046] The above-mentioned bag filter 36 includes filter bags, a frame, an upper cleaning chamber, a lower ash hopper, a blowing device and a control system. The filter bag is the core component of the bag filter, which is usually made of textile or non-woven fabric, has porosity, and can filter and adsorb dust particles in the gas. The frame is used to support the filter bag to ensure its tension and prevent it from being damaged. The cleaning chamber and the ash hopper are located at the upper and lower parts of the equipment respectively, and are used to collect and store the cleaned dust. The blowing device is used to regularly back-blow the filter bag to maintain the efficient operation of the dust collector.

[0047] The main function of the bag filter is to capture and separate dust particles in the exhaust gas. When the exhaust gas passes through the filter bag, the dust particles are intercepted by the filter bag and attached to its surface, while the clean gas passes through the filter bag into the clean room and is discharged. The filter bag is regularly back-blown through the spray device to remove the attached dust and maintain the air permeability and dust removal efficiency of the filter bag.

[0048] like Figures 1 to 5 As shown, the waste gas from the incineration device 20 enters the cooling and purification device 30 and then goes to the spray device 40. The spray device 40 includes a plurality of spray towers 41 connected in series. The spray liquid can be pumped into the spray tower 41, and the input end of the first spray tower 41 is connected to the cooling and purification device 30. The waste gas treatment equipment also includes a chimney 50 connected to the output end of the last spray tower 41. The plurality of spray towers 41 are used to further absorb the acidic inorganic substances in the waste gas, and the chimney 50 is used to discharge the waste gas after it meets the standards.

[0049] The waste gas described in this application is organic waste gas generated by waste lithium-ion batteries.

[0050] The working principle of the exhaust gas treatment device of this embodiment is as follows:

[0051] The organic waste gas generated in the recycling process of waste lithium-ion batteries, under the action of the exhaust fan 16, enters the first dust collector 131 and the second dust collector 141 to remove solid powder particles; after the organic waste gas is dusted, it enters the incinerator 21 to fully burn and remove organic matter in the waste gas to obtain inorganic waste gas; the inorganic waste gas is cooled by the water bath cyclone dust collector 33, the hot air heat exchanger 31 and the cooling tower 32 in three stages to achieve stable, efficient and pollution-free cooling; after cooling, the inorganic waste gas passes through the filter 34, the dry reactor 35 and the bag filter 36 to achieve organic matter, acid removal and dust removal purification treatment; the purified inorganic waste gas finally enters the multiple spray towers 41 through the action of the induced draft fan for further purification by alkaline washing and spraying to ensure that the waste gas finally meets the standards, and then is discharged through the chimney 50 in a qualified manner.

[0052] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0053] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0054] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A waste gas treatment device, characterized in that: include: A dust removal device (10) comprises an input pipe (11), an output pipe (12), a main pipe (13) and a spare pipe (14), wherein the input pipe (11) and the output pipe (12) are arranged at intervals, a first end of the main pipe (13) is connected to the input pipe (11), a second end of the main pipe (13) is connected to a first end of the output pipe (12), a first end of the spare pipe (14) is connected to the input pipe (11), and a second end of the spare pipe (14) is connected to a first end of the output pipe (12), The dust removal device (10) further comprises a first dust collector (131) arranged on the main pipe (13); the dust removal device (10) further comprises a second dust collector (141) arranged on the spare pipe (14); An incineration device (20) is arranged downstream of the dust removal device (10) and connected to the second end of the output pipe (12); A cooling and purification device (30) is arranged downstream of the incineration device (20) and connected to the incineration device (20); A spray device (40) is arranged downstream of the cooling and purification device (30) and is connected to the cooling and purification device (30).

2. The exhaust gas treatment equipment according to claim 1, characterized in that: The first dust collector (131) includes a first cyclone dust collector and a first metal filter bag dust collector which are arranged at intervals, and the second dust collector (141) includes a second cyclone dust collector and a second metal filter bag dust collector which are arranged at intervals, and the outer side of the main pipe (13) and the outer side of the spare pipe (14) are both provided with a heating sleeve (15).

3. The exhaust gas treatment equipment according to claim 2, characterized in that: The incineration device (20) comprises an incinerator (21) and a blower (22) connected to the incinerator (21); the cooling and purification device (30) comprises a hot air heat exchanger (31) and a cooling tower (32) arranged downstream of the hot air heat exchanger (31); The input end of the incinerator (21) is connected to the second end of the output pipe (12), the output end of the incinerator (21) is connected to the input end of the hot air heat exchanger (31), the output end of the hot air heat exchanger (31) is connected to the input end of the cooling tower (32), and the output end of the cooling tower (32) is connected to the spray device (40). The heating sleeve (15) is provided with hot air inlets (151) and hot air outlets (152) at intervals, a plurality of the first dust collectors (131) and a plurality of the second dust collectors (141) are located between the hot air inlets (151) and the hot air outlets (152), the hot air heat exchanger (31) is provided with an air outlet connected to the hot air inlet (151), and the blower (22) is provided with an air inlet connected to the hot air outlet (152).

4. The exhaust gas treatment equipment according to claim 1, characterized in that: A heating element is disposed around the outer side of each of the first dust collectors (131) and each of the second dust collectors (141).

5. The exhaust gas treatment equipment according to claim 4, characterized in that: The outer side of the heating element is covered with a heat-insulating layer.

6. The exhaust gas treatment equipment according to claim 1, characterized in that: The incineration device (20) comprises an incinerator (21) and a flame arrester (23); the flame arrester (23) is connected between the input end of the incinerator (21) and the second end of the output pipe (12); and the output end of the incinerator (21) is connected to the cooling and purification device (30).

7. The exhaust gas treatment equipment according to claim 6, characterized in that: The flame arrester (23) is a plurality of flame arresters arranged in parallel.

8. The exhaust gas treatment equipment according to claim 1, characterized in that: The cooling purification device (30) comprises a water bath cyclone dust collector (33), a hot air heat exchanger (31), a cooling tower (32) and a filter (34) which are connected in sequence. The input end of the water bath cyclone dust collector (33) is connected to the incineration device (20), and the output end of the filter (34) is connected to the spray device (40).

9. The exhaust gas treatment equipment according to claim 8, characterized in that: The cooling purification device (30) further comprises a dry reactor (35) and a bag filter (36) which are connected in sequence, wherein the input end of the dry reactor (35) is connected to the output end of the filter (34), and the output end of the bag filter (36) is connected to the spray device (40).

10. The exhaust gas treatment equipment according to claim 1, characterized in that: The spray device (40) includes a plurality of spray towers (41) connected in series, the input end of the first spray tower (41) is connected to the cooling and purification device (30), and the exhaust gas treatment equipment also includes a chimney (50) connected to the output end of the last spray tower (41).

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