CN218944701U - Rotary drum type waste gas treatment device - Google Patents

Abstract

The utility model discloses a rotary drum type waste gas treatment device, which belongs to the technical field of waste gas treatment and comprises a filtering unit, an adsorption-desorption unit and a catalytic combustion unit, wherein the adsorption-desorption unit comprises a box body and a rotary drum which is arranged in the box body and is used for adsorption, a speed reducing motor which is used for driving the rotary drum to rotate is arranged below the rotary drum, the rotary drum is composed of a plurality of mutually independent sector areas, an inner cover body and an outer cover body are respectively arranged on the inner side wall and the outer side wall of one sector area, wing plates are arranged on the two sides of the inner cover body and the outer cover body, and the radian of each wing plate is identical with that of one sector area. According to the utility model, the wing plates are arranged on the two sides of the inner cover body and the outer cover body, so that the phenomenon of air cross of the adsorption air path and the desorption air path can not occur in the fan-shaped area partially covered by the inner cover body and the outer cover body, and further, the adsorption and desorption effects are better when the adsorption medium is granular.

Description

Rotary drum type waste gas treatment device

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to a rotary drum type waste gas treatment device.

Background

At present, common treatment methods for industrial waste gas containing VOC are a Regenerative Thermal Oxidation (RTO) method and a catalytic combustion (RCO) method, which are generally provided with an adsorption-desorption unit, wherein the adsorption medium filled in the adsorption-desorption unit is used for adsorbing VOC or other organic matters in the waste gas, then the VOC and other organic matters are desorbed from the adsorption medium by using high-temperature back-blowing gas, and concentrated gas is formed and then the concentrated gas is subjected to combustion treatment or catalytic combustion treatment. The existing adsorption-desorption unit comprises a barrel type runner VOCs adsorption purification device as described in China patent CN208229609U, and is generally provided with a barrel type runner consisting of a sector area, wherein an adsorption medium is filled in the sector area, and the VOC is adsorbed by the adsorption medium. When the sector area rotates to the corresponding positions of the inner cover body and the outer cover body, the VOC can be desorbed through the action of the anti-blowing air. However, the drum-type rotating wheel with such a structure requires that the adsorption medium is provided with the strip-shaped through holes, and the two adjacent strip-shaped through holes are not communicated, such as a zeolite molecular sieve, so that when the rotating drum rotates, no matter whether the sector-shaped area part is completely and simultaneously positioned opposite to the inner cover body and the outer cover body, the strip-shaped through holes can form a desorption gas path, and the corresponding strip-shaped through holes can form an adsorption gas path, so that no matter where the sector-shaped area part is positioned, the condition that the adsorption gas path and the desorption gas path are simultaneously communicated can be ensured, that is, the condition of gas cross can not occur.

However, when the adsorption medium is granular, when the inside and outside of the drum are communicated by the gaps formed by stacking the adsorption medium, the gaps are communicated, so that mutually independent strip-shaped through holes cannot be formed, and therefore, when the fan-shaped area rotates to be only partially covered by the inner cover body and the outer cover body, the conditions of easily adsorbing gas channels and desorbing gas channels and air leakage occur at the moment, and the adsorption effect and the desorption effect are affected.

It can be seen that there is a need for improvements and improvements in the art.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a drum type exhaust gas treatment device, which is aimed at solving the problem that the existing drum type adsorption-desorption unit is prone to air leakage when the adsorption medium is granular in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a rotary drum formula exhaust treatment device, includes filter unit, adsorbs-desorption unit, catalytic combustion unit, adsorb-desorption unit includes the box and sets up in the box be used for absorbing rotary drum, the below of rotary drum is equipped with and is used for driving rotary drum pivoted gear motor, the rotary drum comprises a plurality of fan-shaped regions of mutually independent, corresponds the inside wall and the lateral wall in a fan-shaped region of wherein and is equipped with inner cover body and dustcoat body respectively, wherein, the both sides of inner cover body and dustcoat body all are equipped with the pterygoid lamina, the radian of pterygoid lamina is the same with the radian in a fan-shaped region.

In the rotary drum type waste gas treatment device, the catalytic combustion unit comprises a U-shaped shell, a heating chamber and a catalytic combustion chamber, wherein the heating chamber and the catalytic combustion chamber are arranged in the shell, the heating chamber and the catalytic combustion chamber are respectively positioned at two ends of the U-shaped shell, a gas outlet of the shell is connected with a first pipeline and a second pipeline, the first pipeline is communicated with an inner cover body, and the second pipeline is communicated with a chimney.

In the rotary drum type waste gas treatment device, a heat exchanger is arranged between the air outlet of the shell and the second pipeline and is used for preheating the desorbed concentrated gas; the heat dissipation gas circuit of the heat exchanger is communicated with the gas outlet of the shell and the second pipeline; the heat absorption gas circuit of the heat exchanger is communicated with the outer cover body through a third pipeline, and is communicated with the heating chamber through a fourth pipeline.

In the rotary drum type waste gas treatment device, a first connecting pipe is arranged between the first pipeline and the second pipeline, a first electric valve is arranged on the first connecting pipe, and the first electric valve is electrically connected with a control mechanism.

In the rotary drum type waste gas treatment device, a second connecting pipe is arranged between the third pipeline and the fourth pipeline, a second electric valve is arranged on the second connecting pipe, and the second electric valve is electrically connected with the control mechanism.

In the rotary drum type waste gas treatment device, temperature sensors are arranged on the first pipeline and the fourth pipeline, and the temperature sensors are electrically connected with the control mechanism.

In the rotary drum type waste gas treatment device, a second fan is arranged on the third pipeline, the input end of the second fan is further connected with a cold air pipe, a third electric valve is arranged on the cold air pipe, and the third electric valve is electrically connected with the control mechanism.

In the rotary drum type waste gas treatment device, one end of the U-shaped shell corresponding to the heating chamber is provided with a pressure sensor and a pressure relief valve, and the pressure sensor and the pressure relief valve are electrically connected with a controller.

The beneficial effects are that:

the utility model provides a rotary drum type waste gas treatment device, which is characterized in that wing plates are arranged on two sides of an inner cover body and an outer cover body, so that the phenomenon of air cross of an adsorption air path and a desorption air path can not occur in a fan-shaped area covered by the inner cover body and the outer cover body, and further, when an adsorption medium is granular, the adsorption medium still has good adsorption and desorption effects.

Drawings

Fig. 1 is a schematic structural diagram of a drum type exhaust gas treatment device according to the present utility model.

Fig. 2 is a schematic diagram of a drum type exhaust gas treatment device.

Fig. 3 is a schematic longitudinal section of an adsorption-desorption unit.

Fig. 4 is a schematic cross-sectional view of an adsorption-desorption unit (with one sector being diametrically opposed to the inner and outer shells).

Fig. 5 is a schematic cross-sectional view of an adsorption-desorption unit (the inner and outer shells do not completely cover a sector area).

Fig. 6 is a schematic structural view of the catalytic combustion unit.

The drawings are marked: the device comprises a 1-filtering unit, a 2-adsorption-desorption unit, a 3-catalytic combustion unit, a 4-first fan, a 5-second fan, a 6-control mechanism, an 8-box body, a 9-rotary drum, a 10-speed reduction motor, an 11-first cavity, a 12-second cavity, a 13-fan-shaped area, a 14-wing plate, a 15-inner cover body, a 16-outer cover body, a 17-first pipeline, a 18-second pipeline, a 19-third pipeline, a 20-fourth pipeline, a 21-shell body, a 22-heating chamber, a 23-catalytic combustion chamber, a 24-heat exchanger, a 25-first connecting pipe, a 26-first electric valve, a 27-second connecting pipe, a 28-second electric valve, a 29-temperature sensor, a 30-flame retardant, a 31-pressure sensor, a 32-pressure relief valve, a 33-cold air pipe and a 34-third electric valve.

Detailed Description

The present utility model provides a rotary drum type exhaust gas treatment device, and in order to make the object, technical scheme and effect of the present utility model more clear and clear, the present utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 and 2, a rotary drum 9 type exhaust gas treatment device according to a preferred embodiment of the present utility model includes a filtering unit 1, an adsorption-desorption unit 2, a catalytic combustion unit 3, a first fan 4 and a second fan 5 disposed on a pipeline, and a control mechanism 6 electrically connected to the first fan 4 and the second fan 5. The filtering unit 1 is used for removing dust, impurities and small solid-liquid particles in waste gas, and plays a role in primary filtration. The adsorption-desorption unit 2 is provided with an adsorption 2 medium capable of adsorbing organic matters such as 2VOC and the like, harmful matters in the waste gas can be deeply removed, and after the adsorption 2 medium is saturated, the VOC and the organic matters can be desorbed from the adsorption 2 medium through high-temperature reverse blowing to form concentrated gas, so that the adsorption 2 medium can be repeatedly used. The catalytic combustion unit 3 is provided with a heating chamber 22 and a catalytic chamber, the heating chamber 22 can heat the concentrated gas, and the catalytic combustion chamber 23 can oxidize and decompose organic matters such as VOC through the action of a catalyst.

Specifically, as shown in fig. 2, 3 and 4, the adsorption-desorption unit 2 includes a casing 8 and a drum 9 disposed in the casing 8, a gear motor 10 for driving the drum 9 to rotate is disposed below the drum 9, and the gear motor 10 is electrically connected with the control mechanism 6. The height of rotary drum 9 and the interior space height looks adaptation of box 8 to the section of thick bamboo outer wall of rotary drum 9 encloses into first cavity 11 with the inside wall of box 8, and the section of thick bamboo inner space of rotary drum 9 forms second cavity 12, be equipped with the air inlet on the lateral wall of box 8, be equipped with the gas outlet on its roof, its air inlet passes through pipeline intercommunication filter mechanism and first cavity 11, and is equipped with first fan 4 on the pipeline of intercommunication, and the gas outlet of box 8 passes through pipeline intercommunication second cavity 12 and chimney (the chimney is not drawn in the figure), can be with the waste gas after the purification by the chimney discharge. The cylinder is composed of a plurality of mutually independent sector areas 13 (the number of the sector areas is larger than 4), the sector areas 13 are filled with adsorption 2 medium, and the first cavity 11 and the second cavity 12 are communicated through holes or gaps of the adsorption 2 medium. Therefore, when the first fan 4 is operated, the waste gas after the solid impurities are removed by the filtering unit 1 is conveyed into the first cavity 11 by the first fan 4, then passes through the fan-shaped area 13, enters the second cavity 12, and is discharged by the chimney, and when the waste gas flows through the fan-shaped area 13, organic matters such as VOC in the waste gas are adsorbed 2 by the adsorption 2 medium, so that the waste gas is purified. Therefore, the filtering unit 1, the first cavity 11, the fan-shaped area 13, the second cavity 12 and the chimney may form an adsorption 2 gas path for removing organic matters such as VOC in the exhaust gas and discharging the purified exhaust gas.

In the adsorption-desorption unit 2, an inner cover 15 and an outer cover 16 are further provided, the inner cover 15 is arranged opposite to the inner side wall of one sector 13, the outer cover 16 is arranged opposite to the outer side wall of the same sector 13, the inner cover 15 is communicated with the air outlet of the catalytic combustion unit 3 through a first pipeline 17, the outer cover 16 is communicated with the air inlet of the catalytic combustion unit 3 through a third pipeline 19, a second fan 5 is arranged on the third pipeline 19, when the second fan 5 operates, hot air blown out by the catalytic combustion unit 3 can be conveyed into the inner cover 15 through the first pipeline 17, then passes through the sector 13, desorbs VOCs and other organic matters adsorbed 2 on a medium of the adsorption 2 to form concentrated air, and is conveyed to the catalytic combustion unit 3 through the outer cover 16 and the third pipeline 19 for catalytic combustion. Therefore, the first pipeline 17, the inner cover 15, the sector 13 opposite to the inner cover 15, the outer cover 16, the third pipeline 19, the heating chamber 22 and the catalytic combustion chamber 23 can form a desorption gas path for desorbing and concentrating the VOC and other gases adsorbed 2 on the adsorption 2 medium, and performing catalytic combustion treatment.

In the adsorption-desorption unit 2, as shown in fig. 4 and 5, the two sides of the inner cover 15 and the outer cover 16 are respectively provided with the wing plates 14, the bending degree of the wing plates 14 arranged at the two sides of the inner cover 15 is matched with the bending degree of the inner side walls of the fan-shaped areas 13, the bending degree of the wing plates 14 arranged at the two sides of the outer cover 16 is matched with the bending degree of the outer side walls of the fan-shaped areas 13, and the radian of the wing plates 14 is the same as that of one fan-shaped area 13, so that the range of one fan-shaped area 13 can be covered, when any one fan-shaped area 13 rotates to the position opposite to the wing plates 14, the gas in the corresponding fan-shaped area 13 cannot circulate, and when any one fan-shaped area 13 rotates to the position opposite to the wing plates 14, the part of the inner side walls and the outer cover 16 can only communicate with the desorption gas path, and when any one fan-shaped area 13 is positioned at the wing plates 14 and the position opposite to the inner cover 15 and the outer cover 16, the radian of the wing plates 14 can only communicate with the adsorption path 2, therefore, the adsorption efficiency of the adsorption path 2 and the adsorption path 2 can be prevented from being filled with the adsorption medium in the fan-shaped area 2 through the arranged wing plates 14.

During operation, the rotary drum 9 rotates under the drive of the gear motor 10, waste gas input by the first air inlet can pass through gaps or holes of the adsorption 2 medium to enter the second cavity 12 and then be discharged by the chimney, and when the waste gas flows through the adsorption 2 medium, VOC or other organic gases can be adsorbed 2 on the adsorption 2 medium and then removed. When any one of the fan-shaped areas 13 is turned to the opposite position to the desorption mechanism, the hot blowback gas input by the inner cover 15 passes through the adsorption 2 medium to enter the outer cover 16, and the high-temperature blowback gas can desorb the VOC adsorbed by the adsorption 2 on the adsorption 2 medium to obtain concentrated gas, and then flows through the third pipeline 19 from the outer cover 16 to be conveyed to the catalytic-combustion unit.

In a preferred embodiment, as shown in fig. 6, the catalytic combustion unit 3 includes a U-shaped housing 21, and a heating chamber 22 and a catalytic combustion chamber 23 disposed in the housing 21, where an air inlet is disposed at an end of the housing 21 where the heating chamber 22 is disposed, and an air outlet is disposed at an end of the housing 21 where the catalytic combustion chamber 23 is disposed, and is an air outlet. The air inlet end is communicated with an air outlet of a desorption mechanism of the adsorption-desorption unit 2 through a pipeline, so that the desorbed concentrated gas can enter the shell 21. The gas outlet end is connected with two pipelines, including a first pipeline 17 communicated with the inner cover 15 and a second pipeline 18 communicated with the exhaust chimney, and the part of the burnt gas is directly discharged through the action of the first pipeline 17 and the second pipeline 18, and the part of the burnt gas is used for desorption as anti-blowing gas so as to meet the requirement on temperature during desorption. It should be noted that, the second pipeline 18 may be connected to the air outlet of the box, and then be connected to the chimney through a pipeline.

In a preferred embodiment, as shown in fig. 1, a heat exchanger 24 is further disposed between the air outlet of the housing 21 and the second pipeline 18, for preheating the desorbed concentrated gas; the heat dissipation gas path of the heat exchanger 24 is communicated with the gas outlet of the shell 21 and the second pipeline 18, and the gas flowing through the heat exchanger is part of gas with a large amount of heat after catalytic combustion and is a heat dissipation medium; the heat absorbing gas path of the heat exchanger 24 is communicated with the outer cover 16 through a third pipeline 19, and is communicated with the heating chamber 22 through a fourth pipeline 20, and the gas flowing through the heat exchanger is the desorbed concentrated gas and is the heat absorbing medium. The heat exchange effect of the heat exchanger 24 can quickly heat the desorbed concentrated gas, so that the power of the heating chamber 22 can be reduced, the energy is saved, the environment is protected, the heat of the gas after catalytic combustion can be utilized after heat exchange, and the utilization rate of the waste heat is improved.

In a preferred embodiment, as shown in fig. 2, in order to adjust the temperature of the back-blowing air so as to better adapt to the temperature requirements of different mediums to be adsorbed 2, a first connecting pipe 25 is disposed between the first pipeline 17 and the second pipeline 18, and a first electrically operated valve 26 is disposed on the first connecting pipe 25, where the first electrically operated valve 26 is electrically connected with the control mechanism 6. When the reverse blowing at a higher temperature is required, the first electrically operated valve 26 is closed, so that the reverse blowing of the first gas path is the high temperature gas outputted from the gas outlet of the housing 21. When the temperature of the back-blowing air in the first air path needs to be adjusted, the first electric valve 26 is opened, at this time, the back-blowing air flowing in the first air path is a mixture of the air after heat exchange by the heat exchanger 24 and the high-temperature air output by the shell 21, and the opening of the first electric valve 26 can be adjusted according to actual needs in the specific implementation process, so as to obtain the back-blowing air in a certain temperature range, and further, the requirements of different desorption temperatures can be met.

In the heat exchange process, although the gas after desorption and concentration is heated up rapidly by the heat exchange, the energy consumption of the heating chamber 22 is reduced. However, for some flammable gases, the phenomenon of early combustion is easy to occur when the temperature is too high, so that the pressure of a pipeline is increased, and the danger of explosion occurs. In this regard, in a preferred embodiment, as shown in fig. 2, a second connection pipe 27 is disposed between the third pipeline 19 and the fourth pipeline 20, a second electric valve 28 is disposed on the second connection pipe 27, the second electric valve 28 is electrically connected to the control mechanism 6, the third pipeline 19 is connected to the housing 16 and the heat absorption gas path in the heat exchanger 24, and the fourth connection pipe is connected to the outlet of the heat absorption gas path in the heat exchanger 24 and the gas inlet of the housing 21, so when the second electric valve 28 is opened, a part of the gas in the third pipeline 19 may enter the fourth pipeline 20 through the second connection pipe 27, i.e. a part of the concentrated gas does not undergo heat exchange heating, and another part of the concentrated gas flows into the fourth pipeline 20 after being heated up and is mixed with a part that does not undergo heating, so that the temperature at the gas inlet of the housing 21 may be adjusted. In practical use, the opening of the second electrically operated valve 28 can be adjusted to adjust the ratio of the gas in the heat exchanger 24, thereby adjusting the temperature of the desorbed concentrated gas entering the housing 21. The larger the opening of the second electrically operated valve 28, the higher the temperature of the desorption concentrated gas, and conversely, the lower the temperature.

In order to facilitate better control of the first electric valve 26 and the second electric valve 28, in a preferred embodiment, as shown in fig. 2, the first pipeline 17 and the fourth pipeline 20 are provided with temperature sensors 29, and the temperature sensors 29 are electrically connected with the control mechanism 6, so that the temperature of the gas input into the inner housing 15 and the housing 21 can be monitored in real time, and further, the control mechanism 6 can better adjust the opening degrees of the first electric valve 26 and the second electric valve 28.

In order to improve the safety of the device, as shown in fig. 2, a flame retardant device 30 is further disposed on the third pipeline 19, and the flame retardant device 30 can prevent backfire and improve the safety of the device.

Further, as shown in fig. 2, the casing 21 is further provided with a pressure sensor 31 and a pressure release valve 32 at the air inlet end, the pressure sensor 31 and the pressure release valve 32 are electrically connected with the control mechanism 6, and when the pressure sensor 31 detects that the pressure at the air inlet end of the casing 21 is too high, the control mechanism 6 directly opens the pressure release valve 32 to release pressure, so as to ensure safety and avoid explosion events.

In a preferred embodiment, as shown in fig. 2, the input end of the second fan 5 is further connected with a cold air pipe 33, the cold air pipe 33 is further provided with a third electric valve 34, the third electric valve 34 is electrically connected with the control mechanism 6, the cold air pipe 33 is communicated with the outside air and is used for supplementing air, so that on one hand, the catalytic combustion can be more sufficient, and on the other hand, the temperature of the gas in the pipeline can be reduced, and the safety is ensured.

In summary, according to the drum type exhaust gas treatment device provided by the utility model, the wing plates are arranged on the two sides of the inner cover body and the outer cover body, so that the phenomenon of air cross of the adsorption air path and the desorption air path can not occur in the fan-shaped area covered by the inner cover body and the outer cover body, and further, the adsorption and desorption effects are better when the adsorption medium is granular.

It should be noted that, in the description of the embodiments of the present utility model, the directions or positional relationships indicated by the terms "inner", "outer", "upper", "lower", "left", "right", etc. are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present utility model and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the following claims.

Claims (8)

1. The utility model provides a rotary drum formula exhaust treatment device, includes filter unit, adsorbs-desorption unit, catalytic combustion unit, adsorb-desorption unit includes the box and sets up in the box be used for absorbing rotary drum, the below of rotary drum is equipped with and is used for driving rotary drum pivoted gear motor, the rotary drum comprises a plurality of fan-shaped regions of mutually independent, corresponds the inside wall and the lateral wall in one of them fan-shaped region and is equipped with inner cover body and dustcoat body respectively, its characterized in that, the both sides of inner cover body and dustcoat body all are equipped with the pterygoid lamina, the radian of pterygoid lamina is the same with the radian in one fan-shaped region.

2. The rotary drum type exhaust gas treatment device according to claim 1, wherein the catalytic combustion unit comprises a U-shaped shell, a heating chamber and a catalytic combustion chamber which are arranged in the shell, the heating chamber and the catalytic combustion chamber are respectively positioned at two ends of the U-shaped shell, an air outlet of the shell is connected with a first pipeline and a second pipeline, the first pipeline is communicated with the inner cover body, and the second pipeline is communicated with the chimney.

3. The rotary drum type exhaust gas treatment device according to claim 2, wherein a heat exchanger is further provided between the air outlet of the housing and the second pipeline for preheating the desorbed concentrated gas; the heat dissipation gas circuit of the heat exchanger is communicated with the gas outlet of the shell and the second pipeline; the heat absorption gas circuit of the heat exchanger is communicated with the outer cover body through a third pipeline, and is communicated with the heating chamber through a fourth pipeline.

4. A rotary drum type exhaust gas treatment device according to claim 3, wherein a first connecting pipe is arranged between the first pipeline and the second pipeline, a first electric valve is arranged on the first connecting pipe, and the first electric valve is electrically connected with the arranged control mechanism.

5. The rotary drum type exhaust gas treatment device according to claim 4, wherein a second connecting pipe is arranged between the third pipeline and the fourth pipeline, a second electric valve is arranged on the second connecting pipe, and the second electric valve is electrically connected with the control mechanism.

6. The rotary drum type exhaust gas treatment device according to claim 5, wherein the first pipeline and the fourth pipeline are provided with temperature sensors, and the temperature sensors are electrically connected with the control mechanism.

7. The rotary drum type waste gas treatment device according to claim 6, wherein a second fan is arranged on the third pipeline, the input end of the second fan is further connected with a cold air pipe, a third electric valve is arranged on the cold air pipe, and the third electric valve is electrically connected with the control mechanism.

8. The rotary drum type exhaust gas treatment device according to claim 7, wherein a pressure sensor and a pressure release valve are arranged at one end of the U-shaped shell corresponding to the heating chamber, and the pressure sensor and the pressure release valve are electrically connected with the controller.

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