VOC waste gas purification equipment adaptive to different waste gas concentrations

Abstract

The application discloses a VOC waste gas purification device suitable for different waste gas concentrations, which comprises a shell, a waste gas filter arranged on the shell and used for filtering particulate matters in waste gas, a zeolite rotating wheel arranged on the shell, wherein the zeolite rotating wheel comprises a waste gas relay and a waste gas filtering and concentrating part, and the waste gas relay and the waste gas filtering and concentrating part are arranged in the shell; the waste gas relay and the waste gas filtering and concentrating part timely adjust the concentration of the concentrated waste gas according to the concentration of the waste gas to be purified; and an oxidation furnace arranged on the shell, wherein the oxidation furnace oxidizes the concentrated waste gas and discharges the waste gas. The application has the advantages of reasonable structure design, high automation degree, high oxidation safety, low energy consumption, the ability to timely adjust the waste gas flow capacity of the adsorption zone, the reduction zone and the cooling zone according to the waste gas concentration, the ability to effectively adjust the concentration of the concentrated waste gas, and the ability to improve the safety of waste gas adsorption and purification.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, and more particularly to a VOC waste gas purification device suitable for different waste gas concentrations. BACKGROUND

[0002] At present, although the volatile organic compound (VOC) waste gas treatment device and method commonly used in China can reduce air pollution to a certain extent, they still cannot quickly, effectively and completely treat VOC waste gas. Therefore, technical personnel in the field still need to make continuous efforts to develop more scientific VOC waste gas treatment technology to solve the harm of VOC waste gas emission and provide people with a healthy living environment.

[0003] At present, the purification treatment of VOC-containing industrial waste gas is a hot spot in air pollution control, and the zeolite rotating adsorption concentration + catalytic combustion process is a typical method for purifying VOC-containing industrial waste gas with large air volume and low concentration. However, in the process of treating waste gas by zeolite rotating adsorption concentration, an organic waste gas treatment system (such as a regenerative oxidation furnace) is often used to oxidize the concentrated waste gas. The general principle is to oxidize VOC in the waste gas into the corresponding oxide and water at high temperature, thereby purifying the waste gas and recovering the heat released during the decomposition of the waste gas. However, it is found in actual use that the concentration of VOC in the waste gas usually fluctuates greatly, so that the concentration of organic matter in the gas after zeolite rotating adsorption concentration fluctuates greatly. When the organic waste gas treatment system (such as a regenerative oxidation furnace) is used to oxidize the concentrated waste gas, it often causes great safety risk and high energy consumption. When the VOC concentration of the waste gas is high, it is easy to exceed the treatment capacity of the equipment and has the risk of explosion. When the concentration is low, a large amount of fuel is still consumed, resulting in high energy consumption. However, there is no adaptive technical solution to solve this problem in the prior art. SUMMARY

[0004] In order to overcome the above-mentioned defects, the present application provides a VOC waste gas purification device suitable for different waste gas concentrations, which specifically adopts the following technical scheme:

[0005] A VOC waste gas purification device suitable for different waste gas concentrations, comprising:

[0006] a shell;

[0007] a waste gas filtering member arranged on the shell, the waste gas filtering member being used to filter particulate matters in the waste gas;

[0008] A zeolite wheel component is arranged on the shell, the zeolite wheel component comprising a waste gas relay component and a waste gas filtration and concentration component, both arranged in the shell; the waste gas relay component and the waste gas filtration and concentration component adjust the concentration of the concentrated waste gas according to the concentration of the waste gas to be purified and the time.

[0009] An oxidation furnace component is arranged on the shell, the oxidation furnace component oxidizes and discharges the concentrated waste gas.

[0010] Preferably, the shell comprises a protective shell and a closing cover, the protective shell is in the shape of a rectangular groove, a first partition plate is arranged in the protective shell, the first partition plate divides the protective shell into a filtration chamber, a purification and concentration chamber and an oxidation treatment chamber, the closing cover comprises a filtration closing cover, a purification closing cover and an oxidation treatment closing cover, the filtration closing cover is hinged on the slot of the filtration chamber for plugging the waste gas leakage in the waste gas filtration component; the purification closing cover is hinged on the slot of the purification and concentration chamber, and the oxidation treatment closing cover is hinged on the slot of the oxidation treatment chamber.

[0011] Preferably, the waste gas filtration component comprises a front filter frame, a front filter screen and a rear filter component, the front filter frame is in the shape of a folded angle plate, the front filter frame is arranged in the filtration chamber, and the front filter screen is arranged on the front filter frame; the rear filter component is in the shape of a folded angle plate, the rear filter component is arranged in the filtration chamber, and the rear filter component is located at the rear side of the waste gas filtration direction of the front filter screen.

[0012] Preferably, the zeolite wheel component further comprises a second partition plate, the second partition plate is arranged in the purification and concentration chamber; the waste gas relay component comprises a first waste gas relay pipe, a second waste gas relay pipe and a reduction pipe, one end of the first waste gas relay pipe penetrates the first partition plate, the other end of the first waste gas relay pipe penetrates the second partition plate, and the penetration of the first waste gas relay pipe and the second partition plate is located in the first adsorption zone of the waste gas filtration and concentration component; one end of the second waste gas relay pipe penetrates the first partition plate, the other end of the second waste gas relay pipe penetrates the second partition plate, the penetration of the second waste gas relay pipe and the second partition plate is located in the second adsorption zone of the waste gas filtration and concentration component, and a first gas discharge pipe is arranged on the second waste gas relay pipe, a first gas valve is arranged on the first gas discharge pipe, and a second gas valve is arranged on the second waste gas relay pipe between the first gas discharge pipe and the first partition plate; one end of the reduction pipe penetrates the first partition plate, the other end of the reduction pipe penetrates the second partition plate, and the penetration of the reduction pipe and the second partition plate is located in the reduction zone of the waste gas filtration and concentration component.

[0013] Preferably, the waste gas filtering and concentrating device comprises a front end gas guide, a rear end gas guide and a zeolite rotating wheel, the front end gas guide and the rear end gas guide are arranged in the filtering and concentrating chamber, and the zeolite rotating wheel is arranged on the front end gas guide and the rear end gas guide; the front end gas guide comprises a gas guide pipe, a rotating shaft and a front end partition gas guide, one end of the gas guide pipe is arranged on the second partition plate, and first and second adjusting long strip through holes are arranged on the side wall of the gas guide pipe; one end of the rotating shaft is arranged on the second partition plate, and the other end is arranged on the first partition plate; the front end partition gas guide comprises a first partition plate, a second partition plate, a first adjusting partition piece and a second adjusting partition piece, one end of the first partition plate is arranged on the inner side of the gas guide pipe, and one end of the second partition plate is arranged on the inner side of the gas guide pipe.

[0014] Preferably, the first adjusting partition piece comprises a first bearing, a first adjusting partition plate, a first adjusting partition rotating wheel and a first adjusting motor, the first bearing is sleeved on the rotating shaft, one end of the first adjusting partition plate is fixedly arranged on the first bearing, the other end of the first adjusting partition plate is provided with a first relay rod, and the free end of the first relay rod penetrates out of the first adjusting long strip through hole; the first adjusting partition rotating wheel is sleeved outside the gas guide pipe, and the first adjusting partition rotating wheel is fixedly connected with the free end of the first relay rod; a first gear tooth is arranged on the outer side of the first adjusting partition rotating wheel, and a first gear is fixedly arranged on the rotating shaft of the first adjusting motor and engaged with the first gear tooth.

[0015] Preferably, the second adjusting partition piece comprises a second bearing, a second adjusting partition plate, a second adjusting partition rotating wheel and a second adjusting motor, the second bearing is sleeved on the rotating shaft, one end of the second adjusting partition plate is fixedly arranged on the second bearing, the other end of the second adjusting partition plate is provided with a second relay rod, and the free end of the second relay rod penetrates out of the second adjusting long strip through hole; the second adjusting partition rotating wheel is sleeved outside the gas guide pipe, and the inner side of the second adjusting partition rotating wheel is connected with the second relay rod; a second gear tooth is arranged on the outer side of the second adjusting partition rotating wheel, a second gear is arranged on the rotating shaft of the second adjusting motor and engaged with the second gear tooth.

[0016] Preferably, the structure of the rear-end air guide piece is the same as that of the front-end air guide piece; one end of the air guide pipe of the rear-end air guide piece is fixedly arranged on the first partition plate; the first partition plate of the filtering and concentrating chamber is provided with a second gas discharge pipe and a third gas discharge pipe; the second gas discharge pipe is in communication with the first adsorption zone; the second gas discharge pipe is provided with a third gas valve; the third gas discharge pipe is in communication with the second adsorption zone; the free end of the third gas discharge pipe is connected to the second gas discharge pipe; and the third gas discharge pipe is provided with a fourth gas valve.

[0017] Preferably, the zeolite runner is sleeved on the rotating shaft; one end surface of the zeolite runner is in communication with the front-end air guide piece; the other end surface of the zeolite runner is in communication with the rear-end air guide piece; the outer surface of the zeolite runner is provided with third teeth; the filtering and concentrating chamber below the zeolite runner is provided with a rotating motor; the rotating shaft of the rotating motor is provided with a third gear; and the third gear is in mesh with the third teeth.

[0018] Preferably, the oxidation furnace piece comprises a waste gas heater, a cooling output relay pipe, a reduction input relay pipe, an oxidation furnace, an oxidation gas inlet pipe and an oxidation gas outlet pipe; the waste gas heater is arranged in the oxidation treatment chamber; one end of the cooling output relay pipe is in communication with the waste gas heater; the other end of the cooling output relay pipe penetrates through the first partition plate and is in communication with the cooling zone; a shunt relay pipe is connected between the cooling output relay pipe and the third gas discharge pipe; the shunt relay pipe is provided with a fifth gas valve; one end of the reduction input relay pipe is in communication with the waste gas heater; the other end of the reduction input relay pipe penetrates through the first partition plate and is in communication with the reduction zone; one end of the oxidation gas inlet pipe is in communication with the oxidation furnace; the other end of the oxidation gas inlet pipe penetrates through the second partition plate and is in communication with the reduction zone; one end of the oxidation gas outlet pipe is in communication with the oxidation furnace; the other end of the oxidation gas outlet pipe is in communication with the second gas discharge pipe; the oxidation gas outlet pipe is provided with a waste gas content detector and a sixth gas valve; the oxidation gas outlet pipe is provided with a waste gas return pipe; and the free end of the waste gas return pipe is in communication with the first gas discharge pipe.

[0019] The present application at least has the following advantages:

[0020] 1) The VOC waste gas purification equipment of the present application has reasonable structure design, high automation degree, high oxidation safety, low energy consumption, can timely adjust the waste gas flow of the adsorption zone, the reduction zone and the cooling zone according to the waste gas concentration, can effectively adjust the concentration of the concentrated waste gas, and can improve the safety of waste gas adsorption purification.

[0021] 2) The application is suitable for different VOC waste gas purification equipment with different waste gas concentration, which is provided with a shell, a waste gas relay, a waste gas filtering and concentrating part, a zeolite rotating wheel part and an oxidation furnace part. The waste gas relay and the waste gas filtering and concentrating part can adjust the waste gas flow into the adsorption zone, the reduction zone and the cooling zone of the zeolite rotating wheel part according to the waste gas concentration to be purified, so as to make the concentrated waste gas concentration stable, so as to prevent the oxidation furnace from exploding and increasing energy consumption due to the large fluctuation of the concentrated waste gas concentration when oxidizing the concentrated waste gas.

[0022] Other advantages, objects and features of the present application will be apparent from the following description, and will be appreciated by those skilled in the art. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Front view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application;

[0024] Figure 2 Top view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application;

[0025] Figure 3 Perspective structural schematic view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application;

[0026] Figure 4 VOC waste gas purification equipment suitable for different waste gas concentrations of the present application Figure 2 Left side perspective structural schematic view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application in C-C direction section;

[0027] Figure 5 VOC waste gas purification equipment suitable for different waste gas concentrations of the present application Figure 2 Right side perspective structural schematic view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application in C-C direction section;

[0028] Figure 6 VOC waste gas purification equipment suitable for different waste gas concentrations of the present application Figure 2 Perspective structural schematic view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application in D-D direction section;

[0029] Figure 7 VOC waste gas purification equipment suitable for different waste gas concentrations of the present application Figure 1 Front view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application in A-A direction section;

[0030] Figure 8 VOC waste gas purification equipment suitable for different waste gas concentrations of the present application Figure 1 Perspective structural schematic view of the VOC waste gas purification equipment suitable for different waste gas concentrations of the present application in A-A direction section;

[0031] Figure 9 VOC waste gas purification equipment suitable for different waste gas concentrations of the present application Figure 1Fig. 2 is a schematic view of the cross-sectional structure along the B-B direction.

[0032] Wherein: 1-protective shell, 3-first partition plate, 7-waste gas into the wind pipe, 8-filter closed cover, 9-purification closed cover, 10-oxidation treatment closed cover, 11-pre-filter, 12-post-filter, 13-second partition plate, 16-first waste gas relay pipe, 17-second waste gas relay pipe, 18-reduction pipe, 19-first gas discharge pipe, 20-first gas valve, 21-second gas valve, 22-gas regulating valve, 23-zeolite runner, 24-gas guide pipe, 25-rotation shaft, 26-first partition plate, 27-second partition plate, 28-first bearing, 29-first adjustment partition plate, 30-first adjustment partition runner, 31-first adjustment motor, 32-first gear, 33-second bearing, 34-second adjustment partition plate, 35-second adjustment partition runner, 36-second adjustment motor, 37-second gear, 38-second gas discharge pipe, 39-third gas discharge pipe, 40-third gas valve, 41-fourth gas valve, 42-third gear, 43-rotation motor, 44-third gear, 45-oxidation furnace, 46-oxidation gas pipe, 47-oxidation exhaust pipe, 48-waste gas heater, 49-cooling output relay pipe, 51-shunt relay pipe, 52-fifth gas valve, 53-sixth gas valve, 54-waste gas return pipe, 55-first adjustment long strip through hole, 56-second adjustment long strip. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described in detail below by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is used to help understand the present application, but does not constitute a limitation on the present application.

[0034] The term "and / or" in this paper is only a description of the association between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which means that there are three cases of A alone, B alone, and A and B together. The term "and" in this paper is used to describe another relationship between the associated objects, which means that there can be two kinds of relationships, for example, A and B, which means that there are two cases of A alone and A and B together. In addition, the character " / " in this paper generally represents that the associated objects before and after are a "or" relationship.

[0035] According to Figures 1-9The application discloses a VOC waste gas purification device suitable for different waste gas concentrations. The device comprises a shell, a waste gas filter, a zeolite rotating wheel and an oxidation furnace. The waste gas filter, the zeolite rotating wheel and the oxidation furnace are arranged on the shell. The shell comprises a protective shell and a closed cover. The protective shell is in a rectangular groove shape. A first partition plate is arranged in the protective shell. The first partition plate is provided with two parts. The two first partition plates divide the protective shell into a filter chamber, a purification and concentration chamber and an oxidation treatment chamber. The filter chamber, the purification and concentration chamber and the oxidation treatment chamber are arranged in sequence from left to right in the protective shell. The filter chamber is used for arranging the waste gas filter. The purification and concentration chamber is used for arranging the zeolite rotating wheel. The oxidation treatment chamber is used for arranging the oxidation furnace. An exhaust gas inlet pipe is arranged at the end of the filter chamber. The closed cover comprises a filter closed cover, a purification closed cover and an oxidation treatment closed cover. The filter closed cover is hinged to the slot of the filter chamber and is used for blocking the exhaust gas leakage in the waste gas filter. The purification closed cover is hinged to the slot of the purification and concentration chamber. The oxidation treatment closed cover is hinged to the slot of the oxidation treatment chamber.

[0036] The waste gas filter comprises a front filter and a rear filter. The front filter and the rear filter are arranged in the filter chamber. The front filter comprises a front filter frame and a front filter screen. The front filter frame is arranged in the filter chamber. The front filter screen is arranged on the front filter frame. The front filter frame is in a bent plate shape. The front filter frame is arranged in the filter chamber. The bent angle of the front filter frame points to the exhaust gas inlet pipe. The front filter frame can improve the filtering area and the filtering efficiency of the front filter and can reduce the noise generated during the filtering of the front filter. The front filter screen is a front filter cloth. The front filter screen is arranged on the front filter frame. The rear filter comprises an activated carbon filter screen. The activated carbon filter screen is in a bent plate shape. The activated carbon filter screen is provided with two parts. The two activated carbon filter screens are arranged in parallel in the filter chamber. The bent angle of the activated carbon filter screen points to the exhaust gas inlet pipe. The activated carbon filter screen is located at the rear side of the exhaust gas filtering direction of the front filter.

[0037] The zeolite rotary device comprises a second partition plate, a waste gas relay and a waste gas filtering and concentrating device, which are all arranged in the purification and concentration chamber. The second partition plate is arranged in the purification and concentration chamber, thereby separating the purification and concentration chamber into a waste gas relay chamber and a filtering and concentrating chamber. The waste gas relay comprises a first waste gas relay pipe, a second waste gas relay pipe and a reduction pipe. One end of the first waste gas relay pipe penetrates the first partition plate of the purification and concentration chamber, the other end of the first waste gas relay pipe penetrates the second partition plate, and the penetration of the first waste gas relay pipe and the second partition plate is located in the first adsorption area of the waste gas filtering and concentrating device, so that the waste gas filtered by the waste gas filtering device enters the waste gas filtering and concentrating device through the first waste gas relay pipe for adsorption and purification. One end of the second waste gas relay pipe penetrates the first partition plate of the purification and concentration chamber, the other end of the second waste gas relay pipe penetrates the second partition plate, the penetration of the second waste gas relay pipe and the second partition plate is located in the second adsorption area of the waste gas filtering and concentrating device, and a first gas discharge pipe is arranged on the second waste gas relay pipe, which is used to discharge the waste gas after continuous adsorption and purification in the first adsorption area and the second adsorption area. A first gas valve is arranged on the first gas discharge pipe, and a second gas valve is arranged on the second waste gas relay pipe between the first gas discharge pipe and the first partition plate. The reduction pipe is in the shape of a rectangular tube. One end of the reduction pipe penetrates the first partition plate of the purification and concentration chamber, the other end of the reduction pipe penetrates the second partition plate, the penetration of the reduction pipe and the second partition plate is located in the reduction area of the waste gas filtering and concentrating device, and the longitudinal line of the cross section of the reduction pipe is parallel to the radial line of the waste gas filtering and concentrating device, and a gas adjusting valve is arranged on the reduction pipe, thereby further improving the reduction efficiency of the reduction area and controlling the gas flow from the filtering chamber to the reduction area of the waste gas filtering and concentrating device.

[0038] The exhaust gas filtering and concentrating device comprises a front end gas guiding device, a rear end gas guiding device and a zeolite rotating wheel, the front end gas guiding device and the rear end gas guiding device are arranged in the filtering and concentrating chamber, and the zeolite rotating wheel is arranged on the front end gas guiding device and the rear end gas guiding device. The front end gas guiding device comprises a gas guiding pipe, a rotating shaft and a front end partition gas guiding device, the gas guiding pipe and the rotating shaft are arranged in the filtering and concentrating chamber, and the front end partition gas guiding device is arranged on the rotating shaft. One end of the gas guiding pipe is arranged on the second partition plate, and the first adjusting long strip through hole and the second adjusting long strip through hole are arranged on the sidewall of the gas guiding pipe. One end of the rotating shaft is arranged through the second partition plate, and the other end is arranged through the first partition plate, and the axis of the rotating shaft coincides with the axis of the gas guiding pipe. The front end partition gas guiding device comprises a first partition plate, a second partition plate, a first adjusting partition device and a second adjusting partition device, one end of the first partition plate is arranged on the inner side of the gas guiding pipe, the longitudinal line of the first partition plate coincides with the radial line of the gas guiding pipe, and the first partition plate is located at the intermediate position of the first exhaust gas relay pipe and the second exhaust gas relay pipe and the through hole of the second partition plate, so that the first partition plate can separate the adsorption area of the zeolite rotating wheel into a first adsorption area and a second adsorption area. One end of the second partition plate is arranged on the inner side of the gas guiding pipe, and the longitudinal line of the second partition plate coincides with the radial line of the gas guiding pipe, and the second partition plate is used for separating the regeneration area and the cooling area.

[0039] The first adjustment subarea part comprises a first bearing, a first adjustment subarea plate, a first adjustment subarea runner and a first adjustment motor. The first bearing is sleeved on the rotating shaft. The first adjustment subarea plate is fixedly arranged on one end of the first bearing, and the longitudinal line of the first adjustment subarea plate coincides with the radial line of the gas guide pipe. The first adjustment subarea plate cooperates with the second subarea plate to form the gas conveying passage of the cooling area. The first adjustment subarea plate cooperates with the first subarea plate to form the gas conveying passage of the second adsorption area. The other end of the first adjustment subarea plate is provided with a first relay rod, and the free end of the first relay rod penetrates out of the first adjustment long strip through hole. The first adjustment subarea runner is in the shape of a ring. The width of the first adjustment subarea runner is greater than the width of the first adjustment long strip through hole. The first adjustment subarea runner is sleeved outside the gas guide pipe, and the first adjustment subarea runner can close the first adjustment long strip through hole. Meanwhile, the inner side of the first adjustment subarea runner is fixedly connected with the free end of the first relay rod. The outer side of the first adjustment subarea runner is provided with first teeth, and the first adjustment subarea runner can rotate circumferentially outside the gas guide pipe. The first adjustment motor is fixedly arranged in the filtering and concentrating chamber. The rotating shaft of the first adjustment motor is fixedly provided with a first gear. The first gear is engaged with the first teeth. When the first adjustment motor rotates, the first adjustment subarea runner is driven to rotate through the first gear and the first teeth. The first adjustment subarea plate is driven to rotate around the first bearing through the first relay rod. In turn, the size of the gas conveying passage of the cooling area is adjusted according to the concentration of the exhaust gas.

[0040] The second adjustment subarea part comprises a second bearing, a second adjustment subarea plate, a second adjustment subarea runner and a second adjustment motor. The second bearing is sleeved on the rotating shaft. One end of the second adjustment subarea plate is fixedly arranged on the second bearing, and the longitudinal line of the second adjustment subarea plate coincides with the radial line of the gas guide pipe. The second adjustment subarea plate cooperates with the second subarea plate to form the gas conveying passage of the reduction zone. The second adjustment subarea plate cooperates with the first subarea plate to form the gas conveying passage of the first adsorption zone. The other end of the second adjustment subarea plate is provided with a second relay rod, and the free end of the second relay rod penetrates out of the second adjustment long strip penetrating hole. The second adjustment subarea runner is in the shape of a ring. The width of the second adjustment subarea runner is greater than the width of the second adjustment long strip penetrating hole. The second adjustment subarea runner is sleeved outside the gas guide pipe, and the second adjustment subarea runner can close the first adjustment long strip penetrating hole. Meanwhile, the inner side of the second adjustment subarea runner is fixedly connected with the free end of the second relay rod. The outer side of the second adjustment subarea runner is provided with second teeth, and the second adjustment subarea runner can rotate circumferentially outside the gas guide pipe. The second adjustment motor is fixedly arranged in the filtering and concentrating chamber. A second gear is fixedly arranged on the rotating shaft of the second adjustment motor. The second gear is engaged with the second teeth. When the second adjustment motor rotates, the second adjustment subarea runner is driven to rotate through the second gear and the second teeth. The second adjustment subarea plate is driven to rotate around the second bearing through the second relay rod. In turn, the size of the gas conveying passage of the reduction zone is adjusted according to the concentration of the exhaust gas.

[0041] The structure of the rear-end air guide piece is the same as that of the front-end air guide piece. One end of the air guide pipe of the rear-end air guide piece is fixedly arranged on the first partition plate, and the air guide pipe axis of the rear-end air guide piece coincides with the axis of the rotating shaft. The first adjustment partition plate of the rear-end air guide piece corresponds to the first adjustment partition plate, the second adjustment partition plate of the rear-end air guide piece corresponds to the second adjustment partition plate, the first partition plate of the rear-end air guide piece corresponds to the first partition plate position, and the second partition plate of the rear-end air guide piece corresponds to the second partition plate position. The first partition plate of the filter concentration chamber is provided with a second gas discharge pipe and a third gas discharge pipe in penetration, the second gas discharge pipe penetrates the first adsorption zone, and the second gas discharge pipe is provided with a third gas valve, the third gas discharge pipe penetrates the second adsorption zone, and the free end of the third gas discharge pipe is connected to the second gas discharge pipe in penetration, and the third gas discharge pipe is provided with a fourth gas valve. When the exhaust gas is low and only the first adsorption zone is needed, the fourth gas valve can be closed; when the exhaust gas concentration is high, the exhaust gas flows through the zeolite runner, so that the exhaust gas and the zeolite runner have insufficient contact travel, and the exhaust gas and the zeolite runner have insufficient reaction time, the fourth gas valve and the first gas valve can be opened at the same time, and the third gas valve and the second gas valve can be closed at the same time, so that the exhaust gas flows through the first adsorption zone and the second adsorption zone in sequence for adsorption and purification.

[0042] The zeolite runner is sleeved on the rotating shaft, one end of the zeolite runner is embedded in the other end of the air guide pipe, and the other end of the zeolite runner is embedded in the other end of the air guide pipe of the rear-end air guide piece. The zeolite runner can rotate circumferentially on the rotating shaft, and one end surface of the zeolite runner is in contact with the front-end air guide piece in penetration, and the other end surface of the zeolite runner is in contact with the rear-end air guide piece in penetration. The outer side of the zeolite runner is provided with third teeth. The rotating motor is arranged on the filter concentration chamber below the zeolite runner, and the rotating motor is provided with a third gear on the rotating shaft, and the third gear is engaged with the third teeth. The rotating motor drives the zeolite runner to rotate on the rotating shaft through the third gear and the third teeth.

[0043] The oxidation furnace comprises a waste gas heating element, an oxidation furnace, an oxidation gas inlet pipe and an oxidation gas outlet pipe, the waste gas heating element and the oxidation furnace are arranged in the oxidation treatment chamber, and the oxidation gas inlet pipe and the oxidation gas outlet pipe are arranged on the oxidation furnace. The waste gas heating element comprises a waste gas heater, a cooling output relay pipe and a reduction input relay pipe, the waste gas heater is arranged in the oxidation treatment chamber, one end of the cooling output relay pipe is in communication with the waste gas heater, and the other end of the cooling output relay pipe is in communication with the cooling zone after penetrating through the first partition plate. A shunt relay pipe is connected between the cooling output relay pipe and the third gas outlet pipe, and a fifth gas valve is arranged on the shunt relay pipe, when the cooling zone needs to increase the waste gas inflow to improve the cooling efficiency, the shunt relay pipe can discharge the excess waste gas to the third gas outlet pipe through the fifth gas valve. One end of the reduction input relay pipe is in communication with the waste gas heater, and the other end of the reduction input relay pipe is in communication with the reduction zone after penetrating through the first partition plate. The waste gas flowing out of the cooling zone is heated to about 200 DEG C by the waste gas heater and then flows to the reduction zone through the reduction input relay pipe. One end of the oxidation gas inlet pipe is in communication with the oxidation furnace, and the other end of the oxidation gas inlet pipe is in communication with the reduction zone after penetrating through the second partition plate, the waste gas condensed in the reduction zone flows to the oxidation furnace through the oxidation gas inlet pipe to occur oxidation reaction. One end of the oxidation gas outlet pipe is in communication with the oxidation furnace, and the other end of the oxidation gas outlet pipe is in communication with the second gas outlet pipe, and a waste gas content detector and a sixth gas valve are arranged on the oxidation gas outlet pipe, and a waste gas return pipe is connected to the oxidation gas outlet pipe, and a free end of the waste gas return pipe is in communication with the first gas outlet pipe.

[0044] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments, and can be applied to various fields suitable for the present application, and other modifications can be easily made by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A VOC exhaust gas purification device that is adapted to different exhaust gas concentrations, characterized by, The utility model relates to a kind of exhaust gas purification device, including: Shell; Exhaust filter, which is provided on the shell, is used to filter particulate matter in exhaust gas; Zeolite runner, which is provided on the shell, includes exhaust gas relay and exhaust gas filtration concentration, both of which are provided in the shell;The exhaust gas relay and the exhaust gas filtration concentration adjust the concentration of concentrated exhaust gas according to the concentration of exhaust gas to be purified and the time; Oxidation furnace, which is provided on the shell, oxidizes and discharges concentrated exhaust gas; The shell comprises a protective shell and a closed cover, the protective shell is rectangular slot-shaped, a first partition plate is arranged in the protective shell, the first partition plate divides the protective shell into a filtering chamber, a purification and concentration chamber and an oxidation treatment chamber, the closed cover comprises a filtering closed cover, a purification closed cover and an oxidation treatment closed cover, the filtering closed cover is hinged on a slot opening of the filtering chamber and is used for plugging the waste gas leakage in the waste gas filtering element, the purification closed cover is hinged on a slot opening of the purification and concentration chamber, the oxidation treatment closed cover is hinged on a slot opening of the oxidation treatment chamber, the zeolite rotating wheel element further comprises a second partition plate, the second partition plate is arranged in the purification and concentration chamber, the waste gas relay element comprises a first waste gas relay pipe, a second waste gas relay pipe and a reduction pipe, one end of the first waste gas relay pipe is penetrated through the first partition plate, the other end of the first waste gas relay pipe is penetrated through the second partition plate, and the penetration position of the first waste gas relay pipe and the second partition plate is located in the first adsorption area of the waste gas filtering and concentration element, one end of the second waste gas relay pipe is penetrated through the first partition plate, the other end of the second waste gas relay pipe is penetrated through the second partition plate, the penetration position of the second waste gas relay pipe and the second partition plate is located in the second adsorption area of the waste gas filtering and concentration element, a first gas discharge pipe is arranged on the second waste gas relay pipe in penetration, a first gas valve is arranged on the first gas discharge pipe, a second gas valve is arranged on the second waste gas relay pipe between the first gas discharge pipe and the first partition plate, one end of the reduction pipe is penetrated through the first partition plate, the other end of the reduction pipe is penetrated through the second partition plate, and the penetration position of the reduction pipe and the second partition plate is located in the reduction area of the waste gas filtering and concentration element, the waste gas filtering and concentration element comprises a front end air guide element, a rear end air guide element and a zeolite rotating wheel, the front end air guide element and the rear end air guide element are arranged in the filtering and concentration chamber, and the zeolite rotating wheel is arranged on the front end air guide element and the rear end air guide element, the front end air guide element comprises an air guide pipe, a rotating shaft and a front end partition air guide element, one end of the air guide pipe is arranged on the second partition plate, first and second adjusting long strip through holes are arranged on the side wall of the air guide pipe, one end of the rotating shaft is arranged on the second partition plate, and the other end of the rotating shaft is arranged on the first partition plate, the front end partition air guide element comprises a first partition plate, a second partition plate, a first adjusting partition element and a second adjusting partition element, one end of the first partition plate is arranged on the inner side of the air guide pipe, and one end of the second partition plate is arranged on the inner side of the air guide pipe, the rear end air guide element has the same structure as the front end air guide element, and one end of the air guide pipe of the rear end air guide element is fixedly arranged on the first partition plate.The first partition plate of the filter concentration chamber is provided with a second gas discharge pipe and a third gas discharge pipe, the second gas discharge pipe is communicated with the first adsorption area, and the second gas discharge pipe is provided with a third gas valve, the third gas discharge pipe is communicated with the second adsorption area, and the free end of the third gas discharge pipe is communicated with the second gas discharge pipe, and the third gas discharge pipe is provided with a fourth gas valve.

2. The VOC exhaust gas purification device according to claim 1, wherein The exhaust filter includes a pre-filter frame, a pre-filter screen and a post-filter, the pre-filter frame is in the form of a folded corner plate, the pre-filter frame is provided in the filter chamber, and the pre-filter screen is provided on the pre-filter frame;The post-filter is in the form of a folded corner plate, and is provided in the filter chamber, with the post-filter being located behind the pre-filter screen in the exhaust gas filtration direction.

3. The VOC exhaust gas purification device according to claim 2, wherein The first adjustment partition includes a first bearing, a first adjustment partition plate, a first adjustment partition runner and a first adjustment motor, the first bearing is sleeved on the rotating shaft, one end of the first adjustment partition plate is fixedly provided on the first bearing, the other end of the first adjustment partition plate is provided with a first relay rod, the free end of the first relay rod penetrates out of the first adjustment long-bar penetration hole;The first adjustment partition runner is sleeved outside the air guide pipe, and the first adjustment partition runner is fixedly connected with the free end of the first relay rod;A first gear is fixedly provided on the rotating shaft of the first adjustment motor, and the first gear is engaged with the first gear teeth.

4. The VOC exhaust gas purification device according to claim 3, wherein The second adjustment partition includes a second bearing, a second adjustment partition plate, a second adjustment partition runner and a second adjustment motor, the second bearing is sleeved on the rotating shaft, one end of the second adjustment partition plate is fixedly provided on the second bearing, the other end of the second adjustment partition plate is provided with a second relay rod, the free end of the second relay rod penetrates out of the second adjustment long-bar penetration hole;The second adjustment partition runner is sleeved outside the air guide pipe, and the inner side surface of the second adjustment partition runner is connected with the second relay rod;A second gear is provided on the rotating shaft of the second adjustment motor, and the second gear is engaged with the second gear teeth.

5. The VOC exhaust gas purification device according to claim 4, wherein The zeolite runner is sleeved on the rotating shaft, and one end surface of the zeolite runner is in contact with the front air guide piece, the other end surface of the zeolite runner is in contact with the rear air guide piece;A third gear is provided on the rotating shaft of the rotating motor, and the third gear is engaged with the third gear teeth.

6. The VOC exhaust gas purification device according to claim 5, wherein The oxidation furnace part comprises a waste gas heater, a cooling output relay pipe, a reduction input relay pipe, an oxidation furnace, an oxidation gas inlet pipe and an oxidation gas outlet pipe, the waste gas heater is arranged in the oxidation treatment chamber, one end of the cooling output relay pipe is in communication with the waste gas heater, and the other end of the cooling output relay pipe is in communication with the cooling zone after penetrating through the first partition plate; a shunt relay pipe is connected between the cooling output relay pipe and the third gas outlet pipe, a fifth gas valve is arranged on the shunt relay pipe, one end of the reduction input relay pipe is in communication with the waste gas heater, and the other end of the reduction input relay pipe is in communication with the reduction zone after penetrating through the first partition plate; one end of the oxidation gas inlet pipe is in communication with the oxidation furnace, the other end of the oxidation gas inlet pipe is in communication with the reduction zone after penetrating through the second partition plate, one end of the oxidation gas outlet pipe is in communication with the oxidation furnace, the other end of the oxidation gas outlet pipe is in communication with the second gas outlet pipe, a waste gas content detector and a sixth gas valve are arranged on the oxidation gas outlet pipe, and a waste gas return pipe is connected to the oxidation gas outlet pipe, and a free end of the waste gas return pipe is in communication with the first gas outlet pipe.

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