VOCs waste gas oxidation treatment equipment

Abstract

The utility model discloses VOCs waste gas oxidation treatment equipment which comprises a treatment box, a gas inlet pipe communicated with the side wall is installed on one side of the treatment box, and a detachable preliminary filter screen and an activated carbon filter screen are sequentially arranged in the treatment box from left to right. A heating pipe is installed in the treatment box and located between the preliminary filter screen and the activated carbon filter screen, a heat conduction frame plate is fixedly installed at the top of the treatment box, an air outlet pipe penetrating through the heat conduction frame plate is installed on the side, away from the air inlet pipe, of the treatment box, and a sleeve with the end sealed is fixed outside the air inlet pipe; a spiral baffle is arranged between the inner wall of the sleeve and the outer side wall of the air inlet pipe, the other end of the air outlet pipe communicates with one end of the sleeve and is located in the interval of the spiral baffle, and an air outlet is formed in the end, away from the preheating pipe, of the air inlet pipe. The utility model belongs to the technical field of VOCs waste gas treatment, and particularly relates to VOCs waste gas oxidation treatment equipment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to VOCs waste gas treatment technical field, specifically point to a kind of VOCs waste gas oxidation treatment equipment. BACKGROUND

[0002] With the rapid development of industry, the emission of volatile organic compounds (VOCs) waste gas has caused serious threat to the environment and human health, in order to effectively control VOCs waste gas pollution, relevant environmental protection regulations are increasingly strict, and higher requirements are put forward for the performance of VOCs waste gas treatment equipment.

[0003] At present, there are various VOCs waste gas treatment equipment in the market, such as a kind of VOCs waste gas oxidation treatment equipment disclosed in the authorized patent CN222468463U, which realizes multilayer filtration and purification of waste gas through filter plate, electric heating pipe and water tank and other structures, and reduces the waste gas discharge temperature to a certain extent.

[0004] However, such equipment generally has a significant defect: the heat in the heating process cannot be reused, which not only causes waste of energy, but also increases the operation cost of the equipment. In the current environment of advocating energy saving and emission reduction and green development, it is of great practical significance to develop a VOCs waste gas oxidation treatment equipment that can fully utilize waste heat and further optimize the waste gas treatment process and improve the treatment effect. UTILITY MODEL CONTENT

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a kind of VOCs waste gas oxidation treatment equipment, effectively solve the problem of waste heat reuse.

[0006] In order to realize the above function, the technical scheme adopted by the utility model is as follows: a kind of VOCs waste gas oxidation treatment equipment, including treatment box, the treatment box one side is installed with the gas inlet pipe that is communicated with side wall, the treatment box is sequentially arranged with the detachable preliminary filter screen and activated carbon filter screen from left to right in, heating pipe is installed between preliminary filter screen and activated carbon filter screen in the treatment box, the heat conduction frame plate is fixedly installed on the top of the treatment box, the gas outlet pipe is installed on the side of the treatment box away from the gas inlet pipe and penetrates the heat conduction frame plate, the sleeve pipe of end seal is fixed on the outside of the gas inlet pipe, the spiral baffle is arranged between the inner wall of the sleeve pipe and the outer side wall of the gas inlet pipe, the other end of the gas outlet pipe is communicated with one end of the sleeve pipe and located in the interval of the spiral baffle, the end of the gas inlet pipe away from the preheating pipe is provided with gas outlet.

[0007] Preferably, the spiral baffle and the heat conduction frame plate are made of heat-conducting material, the spiral baffle is tightly attached to the inner wall of the sleeve pipe and the outer side wall of the gas inlet pipe, and the heat conduction frame plate is tightly attached to the top wall of the treatment box.

[0008] Preferably, two groups of inclined guide plates are symmetrically arranged in the treatment box near the air inlet pipe.

[0009] Preferably, the preliminary filter screen and the activated carbon filter screen are fixedly connected with connecting plates on one side, the connecting plates are provided with limiting grooves at the top, horizontal limiting plates are inserted into the limiting grooves, limiting racks are fixed on the outer side of the treatment box, and the limiting plates are slidably arranged on the limiting racks.

[0010] Preferably, the limiting racks protrude from the top surface of the treatment box.

[0011] The utility model discloses adopt above-mentioned structure and obtain beneficial effect as follows:

[0012] 1. The heat of the exhaust gas discharged after purification is transferred to the low-temperature exhaust gas about to enter the equipment. The high-temperature exhaust gas discharged from the air outlet pipe is transferred to the preheating pipe after passing through the heat-conducting frame plate, and the preheating pipe preheats the exhaust gas in the air inlet pipe, effectively improving the energy utilization efficiency, reducing the dependence on external energy and reducing the operation cost of the equipment.

[0013] 2. The spiral baffle is arranged on the outer surface of the air inlet pipe along the sleeve direction. When the gas preliminarily preheated by the preheating pipe enters the channel between the sleeve and the air inlet pipe, the spiral baffle guides the exhaust gas to flow spirally, greatly increasing the residence time of the gas in the area and strengthening the heat exchange process, so that the exhaust gas in the air inlet pipe can fully absorb the transferred heat, realizes more efficient preheating and provides more favorable conditions for the subsequent oxidation reaction. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model provides a kind of overall structure schematic diagram of VOCs exhaust gas oxidation treatment equipment;

[0015] Figure 2 The utility model provides a kind of VOCs exhaust gas oxidation treatment equipment of sectional view Figure One ;

[0016] Figure 3 For Figure 2 Local enlarged view in A place;

[0017] Figure 4 The utility model provides a kind of VOCs exhaust gas oxidation treatment equipment of sectional view Figure Two .

[0018] Wherein, 1, treatment box, 2, air inlet pipe, 3, preliminary filter screen, 4, activated carbon filter screen, 5, heating pipe, 6, heat-conducting frame plate, 7, air outlet pipe, 8, sleeve, 9, spiral baffle, 10, air outlet, 11, guide plate, 12, connecting plate, 13, limiting groove, 14, limiting plate, 15, limiting rack. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figures 1-4 As shown, this utility model proposes a VOCs waste gas oxidation treatment device, including a treatment box 1. An inlet pipe 2 connected to the side wall is installed on one side of the treatment box 1. Two sets of inclined guide plates 11 are symmetrically arranged vertically near the inlet pipe 2 inside the treatment box 1, which can evenly distribute the waste gas and improve treatment efficiency and effect. A detachable preliminary filter 3 and an activated carbon filter 4 are arranged sequentially from left to right inside the treatment box 1. A heating pipe 5 is installed between the preliminary filter 3 and the activated carbon filter 4 inside the treatment box 1 to heat the waste gas. The high-temperature environment can remove most of the harmful substances in the waste gas. A heat-conducting frame plate 6 is fixedly installed on the top of the treatment box 1. The treatment box 1 is located away from the inlet pipe 2. An outlet pipe 7 is installed on one side of the air pipe 2, penetrating the heat-conducting frame plate 6. The heat emitted by the outlet pipe 7 is transferred to the heat-conducting frame plate 6, and the heat-conducting frame plate 6 transfers the heat to the treatment box 1. An end-sealed sleeve 8 is fixed to the outside of the air inlet pipe 2. A spiral baffle 9 is provided between the inner wall of the sleeve 8 and the outer wall of the air inlet pipe 2. The other end of the outlet pipe 7 is connected to one end of the sleeve 8 and is located within the interval of the spiral baffle 9. The spiral baffle 9 guides the exhaust gas to flow in a spiral shape, increasing the residence time of the gas and enhancing the heat exchange process, so that the exhaust gas in the air inlet pipe 2 can fully absorb the heat transferred from it, achieving more efficient preheating. An outlet 10 is provided at the end of the air inlet pipe 2 away from the preheating pipe to discharge the gas.

[0022] Both the spiral baffle 9 and the heat-conducting frame plate 6 are made of heat-conducting material. The spiral baffle 9 is in close contact with the inner wall of the sleeve 8 and the outer wall of the air inlet pipe 2, and the heat-conducting frame plate 6 is in close contact with the top wall of the treatment box 1 to increase the heat conduction effect.

[0023] likeFigure 1 As shown, the preliminary filter screen 3 and the activated carbon filter screen 4 are fixed with a connecting plate 12 on one side, the connecting plate 12 is provided with a limiting groove 13 on the top, a horizontal limiting plate 14 is inserted into the limiting groove 13, a limiting frame 15 is fixed on the outer side of the treatment box 1, the limiting plate 14 is slidably arranged on the limiting frame 15, and the limiting frame 15 protrudes from the top surface of the treatment box 1 to limit the limiting plate 14.

[0024] In specific use, the exhaust gas enters the treatment box 1 from the air inlet pipe 2, and the two groups of inclined guide plates 11 arranged at the air inlet pipe 2 can guide the exhaust gas initially, so that the exhaust gas is uniformly dispersed to avoid the situation of concentrated airflow, then the exhaust gas passes through the preliminary filter screen 3, which can filter most of the large-particle impurities such as dust and particulate matter in the exhaust gas to prevent these impurities from entering the subsequent treatment link, the exhaust gas after preliminary filtration enters the area provided with the heating pipe 5, the heating pipe 5 generates heat after being electrified, and the exhaust gas is heated to a certain temperature, in the high-temperature environment, most of the harmful substances in the exhaust gas will decompose, and the heated exhaust gas continues to move and passes through the activated carbon filter screen 4 to adsorb the residual organic pollutants such as benzene, toluene, xylene and other VOCs components in the exhaust gas, and further purify the exhaust gas.

[0025] The high-temperature gas after purification is discharged from the air outlet pipe 7, at this time, the gas still carries a large amount of heat, the air outlet pipe 7 is connected with the heat-conducting frame plate 6, the heat emitted by the air outlet pipe 7 is transferred to the heat-conducting frame plate 6, the heat-conducting frame plate 6 transfers the heat to the treatment box 1, and at the same time, the gas enters the channel between the air outlet pipe 7 and the air inlet pipe 2 through the sleeve pipe 8, due to the guidance of the spiral baffle 9, the gas advances in a spiral shape and is discharged from the air outlet 10, thereby prolonging the residence time in this area and further absorbing heat to achieve more sufficient preheating, and the preheated exhaust gas enters the treatment box 1 from the air inlet pipe 2 to achieve more efficient preheating and provide more favorable conditions for the subsequent oxidation reaction.

[0026] The above describes the present application and its embodiments, which are not limited, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the present application, similar structural modes and embodiments can be designed without creativity, which should belong to the protection scope of the present application.

Claims

1. A VOCs exhaust gas oxidation treatment device, comprising a treatment box (1), one side of which is provided with a gas inlet pipe (2) communicated with the side wall, and inside the treatment box (1), a detachable preliminary filter screen (3) and an activated carbon filter screen (4) are arranged in sequence from left to right, and a heating pipe (5) is arranged between the preliminary filter screen (3) and the activated carbon filter screen (4), characterized in that: a heat-conducting frame plate (6) is fixedly arranged on the top of the treatment box (1), an air outlet pipe (7) is arranged on the side of the treatment box (1) away from the gas inlet pipe (2) and penetrates through the heat-conducting frame plate (6), a sleeve pipe (8) with a sealed end is fixedly arranged outside the gas inlet pipe (2), a spiral baffle (9) is arranged between the inner wall of the sleeve pipe (8) and the outer side wall of the gas inlet pipe (2), the other end of the air outlet pipe (7) is communicated with one end of the sleeve pipe (8) and located in the interval of the spiral baffle (9), and an air outlet (10) is arranged at the end of the gas inlet pipe (2) away from the heating pipe.

2. The VOCs off-gas oxidation treatment device according to claim 1, characterized in that: Both the spiral baffle (9) and the heat-conducting frame plate (6) are made of heat-conducting material, the spiral baffle (9) is tightly attached to the inner wall of the sleeve pipe (8) and the outer side wall of the gas inlet pipe (2), and the heat-conducting frame plate (6) is tightly attached to the top wall of the treatment box (1).

3. The VOCs off-gas oxidation treatment device according to claim 1 or 2, characterized in that: Two groups of inclined guide plates (11) are symmetrically arranged above and below the gas inlet pipe (2) in the treatment box (1).

4. The VOCs off-gas oxidation treatment device according to claim 1, characterized in that: The preliminary filter screen (3) and the activated carbon filter screen (4) are both fixedly connected with a connecting plate (12), the top of the connecting plate (12) is provided with a limiting groove (13), a horizontal limiting plate (14) is inserted into the limiting groove (13), a limiting frame (15) is fixedly arranged on the outer side of the treatment box (1), and the limiting plate (14) is slidably arranged on the limiting frame (15).

5. The VOCs off-gas oxidation treatment device according to claim 4, characterized in that: The limiting frame (15) protrudes from the top surface of the treatment box (1).

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