Volatile organic compound waste gas comprehensive treatment device

Abstract

The utility model provides a comprehensive treatment device for volatile organic compound waste gas. The device comprises an equipment main body, a gas collecting mechanism and a temperature sensor. The gas collecting mechanism comprises a gas collecting hood, a splitter plate, a flow guide pipe and a heating device; the gas outlet end of the gas-collecting hood is connected with the gas inlet end of the equipment main body through a pipeline; the splitter plate is detachably installed in the gas collecting hood, the at least two flow guide pipes longitudinally penetrate through the splitter plate and are fixedly connected to the splitter plate, a fluid cavity is formed in the splitter plate, and the fluid cavity gets close to the flow guide pipes from the peripheries of the flow guide pipes in a spiral track, extends into the pipe walls of the flow guide pipes and continues to extend to the top ends of the side portions of the flow guide pipes from bottom to top in the spiral track. The fluid cavity is not communicated with the interior of the flow guide pipe; and the heating device is embedded on the splitter plate and staggered from the fluid cavity. And the temperature sensor is arranged at the gas inlet end of the gas-collecting hood. According to the utility model, the heating and cooling regulation and control functions are integrated in the gas collection stage, independent space is not occupied, and the maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of waste gas comprehensive treatment, specifically is a volatile organic compound waste gas comprehensive treatment device. BACKGROUND

[0002] Volatile organic compound (VOCs) waste gas comprehensive treatment is the key link of industrial pollution prevention and control, and its core process usually includes pretreatment, adsorption / catalytic oxidation, biological treatment and other multi-stage purification processes. In the current mainstream technical scheme, waste gas is first collected by a gas collecting hood and transported to a treatment device, and after pretreatment such as dust removal and impurity removal, it enters the core units such as adsorption filtration, catalytic combustion or biodegradation for deep treatment, and finally realizes standard emission.

[0003] In actual application, temperature has a significant impact on subsequent treatment links, and the required temperature is different according to the selected treatment method. For example, catalytic combustion requires a high-temperature environment to activate the catalyst activity, while biological treatment requires maintaining a low temperature to ensure microbial activity. To address this issue, the common temperature regulation schemes at present mainly fall into two types: one is to add an independent temperature regulation module in the pretreatment stage, and to regulate the gas temperature through energy exchange or medium contact; the other is to embed a temperature regulation structure in the conveying pipeline, and to realize temperature control through heat exchange inside and outside the pipeline. However, both of these two ways have significant limitations.

[0004] The independent temperature regulation module needs to occupy additional space, while modern VOCs treatment equipment is developing towards high integration, and the compact layout of each functional unit causes the temperature regulation module to be too close to the adjacent equipment. For example, if an electric heater for heating is located close to an activated carbon adsorption bed, it may cause local overheating and accelerate the aging of the adsorbent; if a spray cooling tower for cooling is located close to a catalytic combustion section, it may cause the catalyst to be damped and fail due to water vapor diffusion. Such space conflicts not only increase safety hazards, but also interfere with the coordinated operation of the process chain.

[0005] Although the pipeline temperature regulation structure can disperse the temperature regulation pressure, its internal pipeline structure is complex and is prone to heat exchange efficiency decay due to dust accumulation or corrosion, which requires frequent disassembly and cleaning. UTILITY MODEL CONTENT

[0006] Therefore, it is necessary to provide a volatile organic compound waste gas comprehensive treatment device in view of the problems that the existing VOCs comprehensive treatment device adopts an independent temperature regulation module to occupy space or adopts a pipeline temperature regulation structure which is not easy to maintain.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A volatile organic compound waste gas comprehensive treatment device mainly comprises an equipment main body, a gas collecting mechanism and a temperature sensor.

[0009] The gas collecting mechanism comprises a gas collecting cover, a flow distribution plate, a flow guide pipe and a heating device; the gas outlet end of the gas collecting cover is connected with the gas inlet end pipeline of the equipment main body; the flow distribution plate is detachably installed inside the gas collecting cover and the edge thereof is attached to the inner wall of the gas collecting cover; at least two flow guide pipes longitudinally penetrate the flow distribution plate and are fixed to the flow distribution plate; the inner part of the flow distribution plate is provided with a fluid cavity which converges to the flow guide pipe from the periphery of the flow guide pipe in a spiral track and extends into the pipe wall of the flow guide pipe, and then extends to the top end of the side part of the flow guide pipe from the bottom to the top in a spiral track; the fluid cavity is not communicated with the inner part of the flow guide pipe; the inlet and outlet ends of the fluid cavity are connected with a water supply system through a branch pipe; and the heating device is embedded on the flow distribution plate and is arranged in a staggered manner with the fluid cavity.

[0010] The temperature sensor is arranged at the gas inlet end of the gas collecting cover.

[0011] Further, the inclined inner side wall of the gas collecting cover is provided with a waste heat pipe for waste heat recovery gas flow circulation.

[0012] Further, the distribution density of the waste heat pipe close to the flow guide pipe is greater than that of other positions.

[0013] Further, the surface of the gas collecting cover is bonded with a heat preservation layer.

[0014] Further, the top end of the flow guide pipe is gradually reduced in diameter from the bottom to the top, and is in a circular truncated cone shape.

[0015] Further, a plurality of temperature sensors are equidistantly distributed around the edge track of the gas inlet end of the gas collecting cover.

[0016] Further, the inner wall of the gas collecting cover is provided with a limiting rod, and the flow distribution plate is located at the bottom end of the limiting rod and is detachably connected with the limiting rod through a threaded part.

[0017] Further, the threaded part comprises a screw rod, a protrusion and a limiting nut; the protrusion is fixed to the side wall of the first end of the screw rod, and the first end of the screw rod longitudinally penetrates the flow distribution plate and the limiting rod; a groove adapted to the protrusion is formed in the limiting rod; and the limiting nut is located below the flow distribution plate and is screwed with the screw rod.

[0018] Further, the threaded part comprises a screw rod, a screw sleeve and a limiting nut; the screw sleeve is fixed to the top end of the limiting rod, the first end of the screw rod longitudinally penetrates the flow distribution plate and the limiting rod and extends into the screw sleeve, and the screw rod and the screw sleeve are screwed with each other; and the limiting nut is located below the flow distribution plate and is screwed with the screw rod.

[0019] Further, the side wall of the gas collecting cover is provided with a box plate for internal maintenance of the gas collecting cover.

[0020] Compared with the prior art, the beneficial effects of the utility model include:

[0021] 1. The utility model discloses a spiral flow channel type fluid cavity is built in the shunt plate and the flow guide pipe in the gas collecting hood, and the circulating cooling medium is contacted with the waste gas of high speed flowing through the flow guide pipe and carries out the contact type cooling, in addition, the shunt plate is embedded heating device with the dislocation arrangement mode, utilizes the heat conduction and carries out the temperature compensation of airflow, " cooling + heating " dual -mode temperature -adjusting is integrated in the gas collecting stage, does not need to occupy independent space, solves the layout conflict and the heat interference problem of traditional scheme because of the module stacking,

[0022] 2. The utility model discloses a shunt plate and gas collecting hood adopt the quick -release connection structure of limiting rod cooperation screw part, only need to disassemble the shunt plate when maintaining, do not need to disassemble the pipeline or destroy the main body sealing property of equipment, in addition, the inner wall of gas collecting hood is embedded and is distributed gradiently and is embedded heat pipe, through the heat pump, the waste heat of equipment main body is converted into the auxiliary energy of heating device, cooperates the heat -insulating layer and reduces the heat loss, realizes energy reutilization. BRIEF DESCRIPTION OF DRAWINGS

[0023] The disclosure of the utility model will be explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the utility model. In the drawings, the same reference signs are used to refer to the same parts. Among them:

[0024] Figure 1 It is a perspective view of a volatile organic compound waste gas comprehensive treatment device introduced in the utility model embodiment 1;

[0025] Figure 2 It is the internal schematic view of the gas collecting hood based on Figure 1 ;

[0026] Figure 3 It is the internal structure schematic view of the shunt plate based on Figure 2 ;

[0027] Figure 4 It is the connection schematic view of the screw part and the limiting rod based on Figure 2 ;

[0028] Figure 5 It is the connection schematic view of the screw part and the limiting rod based on Figure 4 from another angle;

[0029] Figure 6 It is the schematic view of the screw part introduced in embodiment 2.

[0030] The figure mark explanation: 1, equipment main body, 2, gas collecting mechanism, 21, gas collecting hood, 22, shunt plate, 23, flow guide pipe, 24, heating device, 3, temperature sensor, 4, heat pipe, 5, limiting rod, 6, screw part, 61, screw rod, 62, protrusion, 63, limiting nut, 64, screw sleeve. DETAILED DESCRIPTION

[0031] It is easy to understand that according to the technical scheme of the utility model, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the utility model. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the utility model, and should not be regarded as the whole of the utility model or regarded as the limitation or restriction of the technical scheme of the utility model.

[0032] Embodiment 1

[0033] Please refer to Figure 1 The embodiment introduces a volatile organic compound waste gas comprehensive treatment device, which mainly comprises an equipment main body 1, a gas collecting mechanism 2 and a temperature sensor 3.

[0034] The equipment main body 1 can comprise a filter structure composed of a bag filter, a metal filter screen or an electrostatic precipitator, and an activated carbon adsorption structure, a catalytic combustion structure or a biological treatment structure, etc. The various structures are integrated in a modular manner and integrated in a casing in the order. For the activated carbon adsorption structure, the catalytic combustion structure or the biological treatment structure, one or more of them are used according to actual needs. Since the existing structure is used, no detailed description is made.

[0035] As shown in Figure 2 and Figure 3 , the gas collecting mechanism 2 comprises a gas collecting cover 21, a shunt plate 22, a flow guide pipe 23 and a heating device 24. The overall structure of the gas collecting cover 21 is that the bottom end is frame-shaped, the middle section is rectangular, and the top is quadrangular pyramid-shaped. The gas inlet end is located on the side wall of the middle section, and the gas outlet end is at the top end. The temperature sensor 3 is installed at the gas inlet end for sensing the temperature entering the inside of the gas collecting cover 21. In order to monitor the waste gas temperature of multiple points in real time, a plurality of temperature sensors 3 are used, which are distributed equidistantly around the edge track of the gas inlet end of the gas collecting cover 21, forming a global temperature field data feedback to the corresponding industrial control equipment, providing accurate data for temperature adjustment.

[0036] The flow distribution plate 22 is installed in the middle section of the gas collecting hood 21 and has a size matching the internal size of the middle section of the gas collecting hood 21, so that the edge of the flow distribution plate 22 closely fits the inner wall of the gas collecting hood 21. At least two flow guide pipes 23 are vertically fixed on the flow distribution plate 22, and the top end of the flow guide pipe 23 adopts a circular truncated cone design with a diameter gradually decreasing from bottom to top, so as to reduce the air flow resistance and improve the contact efficiency of the exhaust gas and the heat exchange medium. A spiral track fluid cavity is arranged in the flow distribution plate 22, which starts from the periphery of the flow guide pipe 23, extends to the inside of the pipe wall in a spiral path and penetrates to the top end of the pipe side, is physically isolated from the internal passage of the flow guide pipe 23 throughout the path, and the inlet and outlet of the fluid cavity are connected to an external water supply system through branch pipes, so as to realize the circulation of the fluid and dynamically adjust the temperature of the exhaust gas passing through the flow guide pipe 23. In order to facilitate the arrangement of the fluid cavity, the flow guide pipe 23 and the flow distribution plate 22 adopt a sandwich structure, and the track of the fluid cavity can spread from the edge of the flow distribution plate 22 to the flow guide pipe 23 through combined splicing. The splicing part between the flow guide pipe 23 and the flow distribution plate 22 can be sealed by glue, so as to realize the closed state of the fluid cavity except the inlet and outlet and avoid leakage.

[0037] The inlet and outlet of the fluid cavity are connected to a water supply system through branch pipes. For example, if cooling treatment of the exhaust gas is required, cooling water can be used. The cooling water enters the flow guide pipe 23 from the branch pipe on the side of the flow distribution plate 22 and is discharged from the branch pipe at the top of the flow guide pipe 23. The cooperation with the water supply mechanism realizes the flow of water in the fluid cavity, and then the cooling operation of the exhaust gas is realized.

[0038] The heating device 24 is embedded in the flow distribution plate 22 in a staggered layout and is spatially isolated from the fluid cavity. The heating device 24 can adopt resistance wire, infrared radiation plate or electromagnetic induction heating module.

[0039] The inner wall of the upper section of the gas collecting hood 21 is provided with a waste heat pipe 4 for waste heat recovery gas flow. The waste heat pipe 4 is made of high thermal conductivity copper alloy or ceramic composite material, which is densely distributed in the area close to the flow guide pipe 23, so that the exhaust gas can better exchange heat with the waste heat pipe 4. The end of the waste heat pipe 4 is connected to the waste heat structure of the equipment main body 1, and the circulation is realized through the cooperation of the heat pump. In order to avoid the influence of external temperature on the temperature adjustment of the exhaust gas by the gas collecting hood 21, a heat preservation layer is compounded on the outer surface of the gas collecting hood 21. The heat preservation layer can adopt aerogel composite material, graphene reinforced foam material, ceramic fiber, etc. The sidewall of the gas collecting hood 21 is provided with a detachable maintenance box plate, which is designed with a magnetic sealing strip and a quick release hinge, so as to facilitate the maintenance of the internal components.

[0040] As Figure 4 and Figure 5As shown, the limiting rod 5 is horizontally fixed in the middle inner wall of the gas collecting cover 21, and the flow distribution plate 22 is attached to the bottom of the limiting rod 5 and detachably connected through the threaded part 6. The threaded part 6 includes a screw rod 61, a protrusion 62 and a limiting nut 63. The limiting rod 5 is longitudinally provided with a hole through which the screw rod 61 passes. Since the protrusion 62 is arranged at the end of the screw rod 61, the hole in the limiting rod 5 allows the screw rod 61 with the protrusion 62 to pass through. The top of the limiting rod 5 is also provided with a groove matching the protrusion 62, and the groove is staggered with the hole through which the protrusion 62 passes. The protrusion 62 is embedded in the groove to achieve circumferential limiting, and the end is locked by the limiting nut 63.

[0041] In application, the temperature sensor 3 senses the temperature of the exhaust gas. If cooling is needed, the fluid cavity is filled with cooling water through the water supply system. The exhaust gas passes through the flow distribution plate 22, passes through the flow guide pipe 23, and enters the device main body 1 from the top of the gas collecting cover 21. The exhaust gas is cooled when passing through the flow distribution plate 22 and the flow guide pipe 23. If heating is needed, the waste heat of the device main body 1 can be introduced into the waste heat pipe 4 through the airflow / fluid to heat exchange with the exhaust gas to heat it. The waste heat pipe 4 near the flow guide pipe 23 is more densely distributed to improve the heat exchange efficiency. If the device main body 1 has no waste heat, the heater 24 can be used for heating operation to achieve the effect of heating. Since the gas collecting cover 21 is arranged at the place where the exhaust gas is generated, and the device main body 1 needs to be placed in a relatively stable environment, the temperature setting of heating and cooling needs to refer to the distance between the gas collecting cover 21 and the device main body 1.

[0042] In this embodiment, the spiral flow channel type fluid cavity is built in the flow distribution plate 22 and the flow guide pipe 23 in the gas collecting cover 21. The circulating cooling medium directly contacts the exhaust gas flowing at high speed through the flow guide pipe 23 for contact cooling. In addition, the flow distribution plate 22 is embedded in the heater 24 in a staggered arrangement to heat the airflow by heat conduction for temperature compensation. The "cooling + heating" dual-mode regulation and control function is integrated in the gas collecting stage without occupying independent space, solving the layout conflict and thermal interference problem caused by module stacking in the traditional scheme.

[0043] Embodiment 2

[0044] As shown in Figure 6 This embodiment introduces a volatile organic compound exhaust gas comprehensive treatment device, which has basically the same structure as the volatile organic compound exhaust gas comprehensive treatment device introduced in embodiment 1. The difference is that the threaded part 6 of this embodiment adopts a screw rod 61, a screw sleeve 64 and a limiting nut 63. The top end of the limiting rod 5 is fixedly connected with the screw sleeve 64. The flow distribution plate 22 and the limiting rod 5 are provided with holes, which allow the first end of the screw rod 61 to longitudinally pass through the flow distribution plate 22 and the limiting rod 5 and extend into the screw sleeve 64. The screw rod 61 and the screw sleeve 64 are screwed together. The limiting nut 63 is located below the flow distribution plate 22 and is screwed with the screw rod 61.

[0045] The present embodiment has the same advantageous effects as those of Example 1.

[0046] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should all be within the protection scope of the present application.

Claims

1. A comprehensive treatment device for volatile organic compound (VOC) waste gas, characterized in that, It includes: Equipment body (1); The gas collection mechanism (2) includes a gas collection hood (21), a flow divider (22), a guide pipe (23), and a heating device (24). The gas outlet of the gas collection hood (21) is connected to the gas inlet pipe of the main body of the equipment (1). The flow divider (22) is detachably installed inside the gas collection hood (21) and its edge is attached to the inner wall of the gas collection hood (21). At least two guide pipes (23) run through the flow divider (22) and are fixed on the flow divider (22). The flow divider (22) has a fluid cavity inside. The fluid cavity approaches the flow divider (23) from the outside of the flow divider (23) in a spiral trajectory and extends into the wall of the flow divider (23). It continues to extend from bottom to top of the side of the flow divider (23) in a spiral trajectory. The fluid cavity is not connected to the inside of the flow divider (23). The heating device (24) is embedded in the flow divider (22) and is staggered from the fluid cavity. Temperature sensor (3) is installed at the air inlet end of the gas collection hood (21).

2. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The inclined inner wall of the gas collection hood (21) is provided with a waste heat pipe (4) for the flow of waste heat recovery air.

3. The comprehensive treatment device for volatile organic compound waste gas according to claim 2, characterized in that, The heat distribution density of the waste heat pipe (4) near the flow guide pipe (23) is greater than that of other locations.

4. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The surface of the gas collection hood (21) is bonded with an insulation layer.

5. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The diameter of the top of the guide tube (23) gradually decreases from bottom to top, forming a frustum shape.

6. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, Multiple temperature sensors (3) are equidistantly distributed around the edge of the air intake end of the gas collection hood (21).

7. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The inner wall of the gas collection hood (21) is provided with a limit rod (5), and the diverter plate (22) is located at the bottom of the limit rod (5) and the two are detachably connected by a threaded part (6).

8. The comprehensive treatment device for volatile organic compound waste gas according to claim 7, characterized in that, The threaded part (6) includes a screw (61), a protrusion (62) and a limiting nut (63); the protrusion (62) is fixed to the first end side wall of the screw (61), and the first end of the screw (61) runs through the diverter plate (22) and the limiting rod (5), and the limiting rod (5) has a groove that matches the protrusion (62); the limiting nut (63) is located below the diverter plate (22) and is screwed to the screw (61).

9. The comprehensive treatment device for volatile organic compound waste gas according to claim 7, characterized in that, The threaded component (6) includes a screw (61), a threaded sleeve (64), and a limiting nut (63); the top end of the limiting rod (5) is fixedly connected to the threaded sleeve (64), the beginning end of the screw (61) runs through the diverter plate (22), the limiting rod (5), and extends into the threaded sleeve (64), and the screw (61) and the threaded sleeve (64) are screwed together; the limiting nut (63) is located below the diverter plate (22) and is screwed together with the screw (61).

10. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The side wall of the gas collection hood (21) is provided with a box panel for internal maintenance.

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