Low-temperature VOCs catalytic oxidation device

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a low-temperature VOCs (volatile organic compounds) catalytic oxidation device which is characterized in that two sides of a box body are respectively connected with a gas inlet pipe and a gas outlet pipe, one end of the gas inlet pipe is connected with a fan, a partition plate I and a partition plate II are connected in the box body, and the partition plate I and the partition plate II divide the box body into a cavity I, a cavity II and a cavity III; a plurality of exhaust holes are formed in the bottom of the first partition plate close to one side of the gas inlet pipe, a vent hole is formed in the top of the second partition plate, a spraying assembly used for purifying gas is arranged in the first cavity, a rotating shaft is rotationally arranged in the second cavity, a motor is arranged on the upper surface of the box body and connected with the rotating shaft, and a plurality of obliquely-arranged mounting frames are arranged on the rotating shaft in a circumferential array mode. A catalyst plate is connected into the mounting frame, and a filtering assembly used for filtering gas impurities is arranged in the third cavity. According to the device, contact between gas and a catalyst is enhanced through the rotating catalyst plate, the utilization rate of the catalyst is increased, and meanwhile, impurities in waste gas are reduced through the arranged spraying assembly and the arranged filtering assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field, specifically point to a kind of low-temperature VOCs catalytic oxidation device. BACKGROUND

[0002] VOCs is the collective name of a class of organic compounds with similar physicochemical properties, including non-methane hydrocarbons, oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds and sulfur-containing organic compounds, etc. VOCs has a significant impact on human health, which can cause headache, lack of concentration, allergy and even cancer. In addition, VOCs reacts with nitrogen oxides in the atmosphere, increasing the concentration of ozone and PM2.5, which poses a threat to the environment and health.

[0003] Traditional VOCs treatment methods usually require high-temperature heating, which not only increases energy costs but also may lead to greenhouse gas emissions. Low-temperature catalytic methods can effectively deal with complex gas environments. Existing devices usually directly introduce waste gas into the box to react with the catalyst, but the contact between waste gas and catalyst is insufficient, the utilization rate of catalyst is low, and the waste gas also contains a large amount of impurities and dust, which directly affects the environment. SUMMARY

[0004] (I) Technical problem to be solved

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects of insufficient contact between catalyst and waste gas, and direct discharge of waste gas containing impurities affecting the environment, and to provide a low-temperature VOCs catalytic oxidation device.

[0006] (II) Technical scheme

[0007] To solve the above technical problems, the utility model provides a technical scheme: a low-temperature VOCs catalytic oxidation device, the box is connected with an air inlet pipe and an air outlet pipe on both sides, the air inlet pipe is connected with a fan at one end, the box is connected with a partition plate one and a partition plate two inside, the partition plate one and the partition plate two divide the box into a chamber one, a chamber two and a chamber three, the partition plate one is close to the air inlet pipe side, the partition plate one is provided with a plurality of exhaust holes at the bottom, the partition plate two is provided with a ventilation hole at the top, the chamber one is provided with a spraying assembly for purifying gas, the chamber two is provided with a rotating shaft, the box is provided with a motor on the upper surface, the motor is connected with the rotating shaft, the rotating shaft is provided with a plurality of inclined mounting racks in circumferential array, the mounting rack is connected with a catalyst plate, and the chamber three is provided with a filtering assembly for filtering gas impurities.

[0008] As an improvement: the spraying assembly includes an atomizing spray connected to the top of the chamber one, a water tank is arranged on one side of the box, the water tank is provided with a water pump, the water pump is connected with two water pipes, and the water pipes are connected with the water tank and the atomizing spray respectively.

[0009] As improvement: the filter assembly comprises two drawer type filter screens arranged in sequence from top to bottom, and an adsorption plate sliding below the filter screens.

[0010] As improvement: a drain pipe is connected to the bottom of the box near one side of the chamber, a water valve is connected to the drain pipe, the bottom of the chamber is of a slope structure, and the side near the drain pipe is lower than the side near the partition plate.

[0011] As improvement: the catalyst plate is symmetrically provided with a connecting assembly, the connecting assembly comprises a sliding groove arranged in the catalyst plate, and plug rods are symmetrically inserted into the sliding groove, one end of the plug rods penetrates through the catalyst plate, the two plug rods are connected by a spring, and the mounting frame is provided with plug holes matched with the plug rods.

[0012] As improvement: a box door is hingedly connected to the box at the position of the second chamber, and a sealing rubber strip is attached to the side edge of the box door.

[0013] (Three), beneficial effects

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] 1. A plurality of catalyst plates are connected to the rotating shaft and are driven to rotate by the motor, and the vortex generated by rotation can break the boundary layer of the gas, reduce the mass transfer resistance between the gas and the catalyst, thereby improving the contact efficiency of the catalyst and the exhaust gas, making the contact between the exhaust gas and the surface of the catalyst more sufficient, and increasing the reaction rate.

[0016] 2. The setting of the spraying assembly can purify the exhaust gas before the catalytic reaction, the water mist and the VOCs gas are in sufficient contact, which helps to remove harmful organic substances in the exhaust gas, so that the subsequent gas and the catalyst can react.

[0017] 3. The setting of the filter assembly can filter and adsorb the reacted gas again, so that the treated gas is cleaner, thereby reducing the pollution to the environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of a low-temperature VOCs catalytic oxidation device.

[0019] Figure 2 is Figure 1 the rear side view structural schematic view.

[0020] Figure 3 is Figure 1 the right view structural schematic view.

[0021] Figure 4 is Figure 3A-A section structure schematic diagram in the figure.

[0022] Figure 5 A-A section structure schematic diagram in the figure. Figure 4 Mounting frame and catalyst plate connection structure schematic diagram in the figure.

[0023] Figure 6 A-A section structure schematic diagram in the figure. Figure 5 Enlarged structure schematic diagram of part A in the figure.

[0024] [Legend of reference signs]

[0025] 1, box; 2, air inlet pipe; 3, air outlet pipe; 4, fan; 5, baffle one; 6, baffle two; 7, chamber one; 8, chamber two; 9, chamber three; 10, exhaust hole; 11, air hole; 12, rotating shaft; 13, motor; 14, mounting frame; 15, catalyst plate; 16, atomizing spray; 17, water tank; 18, water pump; 19, water pipe; 20, filter screen; 21, adsorption plate; 22, liquid discharge pipe; 23, chute; 24, insertion rod; 25, spring; 26, insertion hole; 27, box door. DETAILED DESCRIPTION

[0026] The utility model will be made further detailed description in combination with the drawings. Same parts are indicated with same reference numerals in the drawings.

[0027] It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "in" and "out" refer to the directions towards or away from the geometric center of a particular component.

[0028] In order to make the content of the utility model more easily understood clearly, the technical solutions in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments.

[0029] Embodiment one

[0030] In combination with the drawings Figure 1 And Figure 4 As shown in the figure, a low-temperature VOCs catalytic oxidation device, the box 1 both sides are connected with air inlet pipe 2 and air outlet pipe 3 are equipped with, the air inlet pipe 2 one end is connected with fan 4, the box 1 is connected with baffle one 5 and baffle two 6, baffle one 5, baffle two 6 divide the box 1 into chamber one 7, chamber two 8 and chamber three 9, the baffle one 5 is close to the air inlet pipe 2 one side, the baffle one 5 bottom is equipped with a plurality of exhaust holes 10, baffle two 6 top is equipped with air hole 11, by the above design makes the gas in the box 1 S type flow, increase the gas flow time in the box 1, to improve the efficiency of catalytic oxidation reaction.

[0031] The gas often contains a large amount of impurities, in order to reduce impurities, improve the reaction rate, adopt the following structure, combined with the Figures 2 to 4 As shown in the figure, the chamber one 7 is provided with a spray assembly for purifying gas, the spray assembly includes an atomizing spray row 16 connected to the top of the chamber one 7, a water tank 17 is arranged on one side of the box 1, the water tank 17 is provided with a water pump 18, the water pump 18 is connected with two water pipes 19, the water pipes 19 are connected with the water tank 17 and the atomizing spray row 16 respectively. The fan 4 introduces the exhaust gas into the chamber one 7, the water pump 18 extracts the liquid to the atomizing spray row 16, the atomizing spray row 16 atomizes the liquid into fine droplets and sprays it out, so that the contact area between the liquid and the gas is greatly increased, thereby removing the impurities and pollutants in the exhaust gas, which is helpful to the subsequent reaction of the gas and the catalyst.

[0032] Combined with the Figure 4 As shown in the figure, the bottom of the box 1 near the chamber one 7 side is connected with a drain pipe 22, the drain pipe 22 is connected with a water valve, the bottom of the chamber one 7 is a slope structure, the side near the drain pipe 22 is lower than the side near the partition one 5. The atomized liquid falls into the bottom of the chamber one 7 and is discharged from the drain pipe 22 under the guidance of the slope structure.

[0033] Combined with the Figure 4 As shown in the figure, the chamber two 8 is rotatably provided with a rotating shaft 12, the upper surface of the box 1 is provided with a motor 13, the motor 13 is connected with the rotating shaft 12, the rotating shaft 12 is circumferentially arranged with three inclined mounting racks 14, and the mounting racks 14 are connected with catalyst plates 15. The exhaust gas enters the chamber two 8 through the exhaust hole 10, the motor 13 drives the catalyst plates 15 to rotate, so that a vortex is formed at this place, the contact between the gas and the catalyst is more sufficient, so that the gas reacts with the catalyst faster, thereby improving the reaction efficiency and the utilization rate of the catalyst.

[0034] The exhaust gas enters the chamber three 9 from the air hole 11, in order to ensure the cleanliness of the discharged gas and reduce the pollution to the environment, combined with the Figure 1 As shown in the figure, the chamber three 9 is provided with a filter assembly for filtering the impurities in the gas, the filter assembly includes two drawer type filter screens 20 arranged from top to bottom, the filter screens 20 are used to filter the impurities still contained in the gas, and the adsorption plate 21 is slidably arranged below the filter screen 20, the adsorption plate 21 is activated carbon, which uses its physical and chemical adsorption mechanism to effectively remove the pollutants in the gas and improve the quality of the air or gas.

[0035] Example two

[0036] On the basis of example one, in order to facilitate the replacement of the catalyst plate 15 and ensure the reaction effect, combined with the Figure 5 And Figure 6As shown, the catalyst plate 15 is symmetrically provided with a connecting assembly, which comprises a sliding groove 23 arranged in the catalyst plate 15, and a plug rod 24 symmetrically inserted into the sliding groove 23, one end of the plug rod 24 penetrating through the catalyst plate 15, and the two plug rods 24 being connected by a spring 25, and the mounting frame 14 is provided with a plug hole 26 matched with the plug rod 24, wherein the box 1 is hingedly provided with a box door 27 at the second chamber 8, and the box door 27 is provided with a sealing rubber strip on the side edge, which ensures the sealing of the connection of the box door 27.

[0037] The catalyst plate 15 is inserted into the mounting frame 14, the plug rod 24 is inserted into the plug hole 26, and the fixed connection of the catalyst plate 15 and the mounting frame 14 is realized, if the catalyst plate 15 needs to be removed, only the plug rod 24 is extruded into the sliding groove 23, the spring 25 is compressed, the plug rod 24 is separated from the plug hole 26, and the catalyst plate 15 can be removed.

[0038] The above describes the utility model and its implementation mode, which is not limited, and the drawings shown are only one of the implementation modes of the utility model, and the actual structure is not limited. In general, if a person skilled in the art is inspired, without departing from the creative purpose of the utility model, without creative design, similar structure modes and embodiments of the technical scheme should belong to the protection scope of the utility model.

Claims

1. A low-temperature VOCs catalytic oxidation device, comprising a box (1), the box (1) is connected with an air inlet pipe (2) and an air outlet pipe (3) on both sides, respectively, one end of the air inlet pipe (2) is connected with a fan (4), characterized in that: the box (1) is connected with a partition plate one (5) and a partition plate two (6), the partition plate one (5) and the partition plate two (6) divide the box (1) into a chamber one (7), a chamber two (8) and a chamber three (9), the partition plate one (5) is close to one side of the air inlet pipe (2), a plurality of exhaust holes (10) are arranged on the bottom of the partition plate one (5), and a ventilation hole (11) is arranged on the top of the partition plate two (6); the chamber one (7) is provided with a spraying assembly for purifying gas, the chamber two (8) is rotatably provided with a rotating shaft (12), the upper surface of the box (1) is provided with a motor (13), the motor (13) is connected with the rotating shaft (12), a plurality of mounting racks (14) are arranged on the rotating shaft (12) in a circumferential array, a catalyst plate (15) is connected in the mounting rack (14), and the chamber three (9) is provided with a filtering assembly for filtering gas impurities.

2. The low-temperature VOCs catalytic oxidation device according to claim 1, characterized in that: the spraying assembly comprises an atomizing spray (16) connected to the top of the chamber one (7), a water tank (17) is arranged on one side of the box (1), a water pump (18) is arranged on the water tank (17), two water pipes (19) are connected to the water pump (18), and the water pipes (19) are connected with the water tank (17) and the atomizing spray (16), respectively.

3. The low-temperature VOCs catalytic oxidation device according to claim 1, characterized in that: the filtering assembly comprises two drawer-type filter screens (20) arranged in sequence from top to bottom, and an adsorption plate (21) slidingly arranged below the filter screen (20).

4. The low-temperature VOCs catalytic oxidation device according to claim 2, characterized in that: a drain pipe (22) is connected to the bottom of the box (1) close to one side of the chamber one (7), a water valve is connected to the drain pipe (22), the bottom of the chamber one (7) is in a slope structure, and the side close to the drain pipe (22) is lower than the side close to the partition plate one (5).

5. The low-temperature VOCs catalytic oxidation device according to claim 1, characterized in that: a connecting assembly is symmetrically arranged on the catalyst plate (15), the connecting assembly comprises a sliding groove (23) arranged in the catalyst plate (15), plug rods (24) are symmetrically inserted into the sliding groove (23), one end of the plug rod (24) penetrates through the catalyst plate (15), the two plug rods (24) are connected through springs (25), and the mounting rack (14) is provided with plug holes (26) matched with the plug rods (24).

6. The low-temperature VOCs catalytic oxidation device according to claim 5, characterized in that: a box door (27) is hingedly arranged on the box (1) at the chamber two (8), and a sealing rubber strip is arranged on the side edge of the box door (27).

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