Activated carbon adsorption equipment for waste gas treatment

Abstract

The utility model provides activated carbon adsorption equipment for waste gas treatment. The equipment comprises a filter box, an activated carbon filling plate and a switching mechanism. Two cavities which are horizontally adjacent and not communicated are formed in the filter box, a flow dividing three-way pipeline used for dividing waste gas into the two cavities is arranged at the bottom end of the side of the filter box, and a collecting three-way pipeline used for collecting purified gas in the two cavities is arranged at the top of the filter box. And the activated carbon filling plate is placed in the cavity of the filter box. The switching mechanism comprises a baffle, an extension rod and a limiting piece. The baffle plate is arranged on the box wall of the filter box in an attached and sliding manner and is used for shielding the communication part of the shunting three-way pipeline and one of the chambers; the extension rod is fixedly connected with the baffle, extends outwards along the sliding direction of the baffle and is positioned on the outer side of the filter box; the limiting piece is mounted outside the filter box and is used for limiting the movement of the extension rod. According to the utility model, the continuity of the adsorption operation is realized through the independent shunting design of the double chambers, and the non-planned shutdown of the traditional single-chamber equipment when the activated carbon is replaced is eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field, concretely is a waste gas treatment active carbon adsorption equipment. BACKGROUND

[0002] Active carbon adsorption is one of the most widely used technical means in the field of industrial waste gas treatment, and plays an important role in the fields of volatile organic compounds (VOCs) treatment and malodorous gas treatment due to its efficient adsorption performance and mature application system.

[0003] However, in terms of equipment operation and maintenance, the existing replacement process of single-channel filtering equipment requires the complete shutdown of the equipment for the overall disassembly and replacement of the adsorption unit. This operation directly causes the rupture of the waste gas treatment link, and frequent start-stop of the equipment will accelerate the aging of the system seals, causing secondary leakage hazards. In addition, the fixed period replacement mode commonly used is difficult to accurately match the actual working conditions: when the waste gas concentration is lower than the design value, the active carbon adsorption capacity is not saturated and is replaced, causing material waste and increased disposal cost; when the waste gas load suddenly increases, the saturated adsorption material cannot be replaced in time, causing waste gas penetration and causing emission exceeding the standard. SUMMARY

[0004] Therefore, it is necessary to provide a waste gas treatment active carbon adsorption equipment to solve the problem of rupture of the waste gas treatment link caused by shutdown replacement of the existing active carbon adsorption equipment.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A waste gas treatment active carbon adsorption equipment, comprising a filter box, an active carbon filling plate and a switching mechanism.

[0007] The filter box has two chambers inside that are horizontally adjacent and not connected. The filter box is provided with a shunt three-way pipe at the bottom of the side part for shunting waste gas into the two chambers, and a collection three-way pipe at the top for collecting the purified gas in the two chambers.

[0008] The active carbon filling plate is placed in the chamber of the filter box and has the same cross-sectional area as the chamber.

[0009] The switching mechanism includes a baffle, an extension rod and a limiting piece. The baffle is slidingly attached to the filter box wall to block the communication between the shunt three-way pipe and one of the chambers. The position of the baffle is changed to change the opening and closing state of the two chambers. The extension rod is fixed to the baffle and extends outward along the sliding direction of the baffle and is located outside the filter box. The limiting piece is installed outside the filter box to limit the movement of the extension rod.

[0010] Further, the limiting piece comprises a limiting frame, a limiting rod and a spring; the limiting frame is fixedly connected to the outer wall of the filter box, the limiting frame is located at the bottom of the extension rod and the two are in contact; the limiting rod longitudinally penetrates the limiting frame, the middle section of the limiting rod is horizontally extended to form a protrusion in contact with the limiting frame, and the spring is located between the protrusion and the limiting frame to push the limiting rod upward; two openings adapted to the limiting rod are longitudinally formed on the extension rod, the openings correspond to the longitudinal overlap of the end portions of the limiting rod, and the cover plate covers the communication part of the shunt three-way pipe and the chamber.

[0011] Further, the end of the limiting rod is located below the limiting frame and is horizontally bent, and the bending length is greater than the length of the limiting frame.

[0012] Further, one edge of the cover plate covering the communication part of the shunt three-way pipe and the chamber is provided with a sealing strip.

[0013] Further, the inner wall of the chamber of the filter box is provided with a support rod, the activated carbon filling plate is arranged on the top of the support rod, a limiting block is arranged above the support rod, the limiting block is installed on the inner wall of the chamber, and the spacing between the limiting block and the support rod is consistent with the thickness of the activated carbon filling plate.

[0014] Further, the inside of the limiting block is embedded with a distance sensor for sensing the carbon layer of the activated carbon filling plate.

[0015] Further, a gas detector for detecting volatile organic compounds is installed on the inner wall of the chamber of the filter box, and the gas detector is located above the activated carbon filling plate.

[0016] Further, the communication part of the shunt three-way pipe and the chamber is provided with an odor sensor for sensing different odors.

[0017] Further, a flow uniformizing plate is installed on the chamber of the filter box, the flow uniformizing plate is located below the activated carbon filling plate, and the flow uniformizing plate is embedded with an arrayed heater.

[0018] Further, two box doors are hinged to the side of the filter box away from the shunt three-way pipe, and the two box doors correspond to the two chambers one by one.

[0019] Compared with the prior art, the beneficial effects of the present application include:

[0020] 1、The present application realizes the continuity of adsorption operation by switching mechanism to seamlessly guide the airflow to the standby chamber when a chamber enters the maintenance period, and eliminates the unplanned downtime when replacing the activated carbon of the traditional single-chamber device.

[0021] 2. The utility model discloses a corresponding sensor is set up to the adsorption state of active carbon filling board is monitored, and then in the active carbon filling board is in the saturated state and is replaced, and the active carbon replacement period is optimized from fixed time mode to on -demand replacement mode, improves the utilization ratio and reduces the loss simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0022] The disclosure of the utility model will be explained with reference to the drawings. It should be appreciated that the drawings are merely 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:

[0023] Figure 1 It is a perspective view of a waste gas treatment active carbon adsorption equipment introduced by the utility model;

[0024] Figure 2 It is a part of internal schematic view of a waste gas treatment active carbon adsorption equipment based on Figure 1 ;

[0025] Figure 3 It is the enlarged view of A based on Figure 2 ;

[0026] Figure 4 It is an internal schematic view of a waste gas treatment active carbon adsorption equipment based on Figure 1 .

[0027] The annotation in the drawing is explained: 1, filter box, 2, active carbon filling board, 3, switching mechanism, 31, baffle, 32, extension rod, 33, limit piece, 331, limit frame, 332, limit rod, 333, spring, 4, flow distribution plate. DETAILED DESCRIPTION

[0028] It is easy to understand that according to the technical scheme of the utility model, the general skilled person in the art can propose a plurality of structure modes and implementation modes that can be replaced 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 as the limitation or restriction of the technical scheme of the utility model.

[0029] Please refer to Figure 1 and Figure 2 , the embodiment introduces a waste gas treatment active carbon adsorption equipment, mainly by filter box 1, active carbon filling board 2 and switching mechanism 3 are constituted.

[0030] The inside of the filter box 1 is divided into two horizontally adjacent and non-communicating chambers by a longitudinal rigid partition, the two chambers are symmetrically arranged, the shunt three-way pipeline mainly adopts a Y-shaped three-way pipe, both ends of which are respectively connected to the side walls of the two chambers, and the other end is connected to the external exhaust gas conveying pipeline through a flange. The collecting three-way pipeline adopts the same structure as the shunt three-way pipeline, that is, mainly a Y-shaped three-way pipe, both ends of which are respectively connected to the top ends of the two chambers, and the other end is connected to the discharge pipeline. The back side of the filter box 1, that is, the side away from the shunt three-way pipeline, is hinged with a box door, the box door is provided with a double-opening sealing door, each chamber corresponds to an independent box door, and the box door is connected to the box body through a heavy hinge and is air-tightly locked when closed through the periphery arranged inflatable sealing strips.

[0031] The activated carbon filling plate 2 is placed in the chamber of the filter box 1, and the inner wall of the chamber of the filter box 1 is provided with a support rod, and the activated carbon filling plate 2 is placed on the top of the support rod. In actual application, the surface of the support rod is coated with a high-temperature-resistant rubber pad layer, and the limiting block above the support rod is installed in the filter box 1 through bolts, and the distance between the limiting block and the support rod is accurately matched with the thickness of the activated carbon filling plate 2.

[0032] The activated carbon filling plate 2 is composed of a frame and a honeycomb-shaped activated carbon adsorption unit, and the overall size is strictly matched with the cross section of the chamber. The inside of the frame is welded with a reinforcing rib structure to ensure the compression resistance of the activated carbon filling plate 2. In actual application, a nanoscale hydrophobic coating can be coated on the surface of the activated carbon filling plate 2 to improve the moisture resistance. The flow distribution plate 4 is arranged below the activated carbon filling plate 2 and is installed in the chamber, and the plate body is pre-buried with a nickel-chromium alloy heating wire array connected to the corresponding industrial control equipment to realize accurate temperature control within a certain range.

[0033] In order to avoid the activated carbon adsorption capacity from being replaced before saturation or the saturated adsorption material from being replaced in time, a distance sensor (not shown in the figure) for sensing the carbon layer of the activated carbon filling plate 2 is installed in the limiting block, the distance sensor is preferably a laser distance measuring sensor, and is connected to the corresponding industrial control equipment. The distance sensor feeds back to the industrial control equipment, and as the activated carbon filling layer continuously adsorbs, the carbon layer continuously decreases, and when the settlement amount exceeds the preset range, the activated carbon filling layer is replaced.

[0034] Another embodiment is to install a gas detector (not shown in the figure) for detecting volatile organic compounds above the activated carbon layer. The gas detector is connected to the corresponding industrial control equipment and feeds back data to the industrial control equipment. The gas detector adopts a non-dispersive infrared absorption detector or a semiconductor sensor detector. Since existing instruments are used, they will not be described in detail here. This method detects the concentration of VOCs passing through the activated carbon filling layer, and when the concentration reaches a threshold value, the activated carbon is considered to be invalid, and the activated carbon filling layer is replaced.

[0035] Another embodiment is to provide an odor sensor (not shown in the figure) for sensing different odors at the communication between the three-way pipeline and the chamber, the odor sensor includes 16 different sensitive material sensing units, which can identify characteristic odor components such as benzene series and sulfides, and is connected with the corresponding industrial control equipment to feed back data to the industrial control equipment. When the odor characteristic value exceeds the set threshold value, it is considered that the activated carbon is invalid, and the activated carbon filling layer is replaced.

[0036] In actual application, single or multiple combined methods can be used to determine whether the activated carbon filling layer needs to be replaced, and corresponding settings can be made according to actual needs.

[0037] The switching mechanism 3 will be described below. As shown in Figures 3-4 The switching mechanism 3 mainly consists of a baffle 31, an extension rod 32 and a limiting piece 33. The horizontal length of the baffle 31 is at least half of the horizontal length of the chamber, and the baffle 31 can cross the two chambers. The baffle 31 and the filter box 1 wall can be connected by sliding through concave-convex matching. To ensure the sealing performance of the baffle 31 covering the communication between the three-way pipeline and the chamber, a sealing strip is arranged on the edge of the baffle 31 covering the communication between the three-way pipeline and the chamber. It should be noted that the bottom of the baffle 31 is in contact with the bottom of the chamber. In addition, a partition plate separates the inside of the filter box 1 into two chambers, and a hole with a thickness matching the baffle 31 is opened on the partition plate, so that the baffle 31 can move back and forth in the two chambers. During the movement, the two chambers are in a relatively independent and disconnected state due to the hole being blocked by the thickness of the baffle 31 itself.

[0038] The extension rod 32 is fixedly connected with the baffle 31, extends outward along the sliding direction of the baffle 31 and is located outside the filter box 1. A hole is provided on the filter box 1 for the extension rod 32 to pass through. The end of the extension rod 32 that is not connected with the baffle 31 is always located outside the filter box 1. The baffle 31 is moved by the extension rod 32, so that the position of the baffle 31 changes, thereby shielding the communication between one of the chambers and the three-way pipeline. Since the baffle 31 can only shield the communication of one of the chambers, the other chamber is in communication with the exhaust pipeline. In actual use, the extension rod 32 can be manually pushed or a driving structure such as an electric push rod can be provided to reciprocatingly push the extension rod 32.

[0039] In order to limit the extension rod 32, the limiting piece 33 is arranged outside the filter box 1, and the limiting piece 33 mainly comprises a limiting frame 331, a limiting rod 332 and a spring 333. The limiting frame 331 is fixedly connected to the outer wall of the filter box 1, the top of the limiting frame 331 is in contact with the bottom of the extension rod 32, the limiting rod 332 longitudinally penetrates through the limiting frame 331, the bottom end is located below the limiting frame 331 and is horizontally bent, the bending length is greater than the length of the limiting frame 331, and the bending part of the limiting rod 332 facilitates the downward pulling operation of the limiting rod 332. The middle section of the limiting rod 332 is horizontally extended to form a protrusion in contact with the limiting frame 331, the spring 333 is located between the protrusion and the limiting frame 331, and the limiting rod 332 is moved upward by pushing the protrusion. The extension rod 32 is provided with two holes, and the hole spacing is accurately calculated to match the full stroke displacement of the baffle 31.

[0040] When working, only one chamber performs the adsorption operation, when it is detected that the active carbon filling plate 2 in the chamber needs to be replaced, the limiting rod 332 is pulled down, so that the extension rod 32 can be moved horizontally, the baffle 31 is driven to switch to the chamber, so that the chamber is in a closed state, and the other chamber is in communication with the shunt three-way pipeline, gas flows through the other chamber, and the chamber can be replaced. In order to avoid the backflow of gas to the chamber, a one-way valve is arranged at the connection between the converging three-way pipeline and the chamber, so that only gas can be discharged, and backflow is avoided to affect the replacement operation.

[0041] The technical range of the utility model is not limited to the content in the above description, and those skilled in the art can deform and modify the above embodiment without departing from the technical thought of the utility model, and these deformations and modifications should all belong to the protection range of the utility model.

Claims

1. An exhaust gas treatment activated carbon adsorption apparatus, characterized by, It comprises: A filter box (1) has two chambers inside which are horizontally adjacent and not communicated, the bottom end of the side of the filter box (1) is provided with a shunt three-way pipe for shunting exhaust gas into the two chambers, and the top of the filter box (1) is provided with a collection three-way pipe for collecting the purified gas in the two chambers; An activated carbon filling plate (2) is placed in the chamber of the filter box (1) and has the same cross-sectional area as the chamber; A switching mechanism (3) comprises a baffle (31), an extension rod (32) and a limiting piece (33); the baffle (31) is slidingly arranged on the wall of the filter box (1) to block the communication between the shunt three-way pipe and one of the chambers, and the position state of the baffle (31) is changed to change the opening and closing state of the two chambers; the extension rod (32) is fixedly connected with the baffle (31) and extends outward along the sliding direction of the baffle (31) and is located outside the filter box (1); the limiting piece (33) is installed outside the filter box (1) to limit the movement of the extension rod (32).

2. The exhaust gas treatment activated carbon adsorption apparatus according to claim 1, characterized by, The limiting piece (33) comprises a limiting frame (331), a limiting rod (332) and a spring (333); the limiting frame (331) is fixedly connected to the outer wall of the filter box (1), the limiting frame (331) is located at the bottom of the extension rod (32) and in contact with the extension rod (32); the limiting rod (332) extends longitudinally through the limiting frame (331), the middle section of the limiting rod (332) extends horizontally to form a protrusion in contact with the limiting frame (331), and the spring (333) is located between the protrusion and the limiting frame (331) to push the limiting rod (332) upward; two openings adapted to the limiting rod (332) are longitudinally formed on the extension rod (32), and the two openings correspond to the covering state of the baffle (31) to different chambers respectively.

3. The exhaust treatment activated carbon adsorption apparatus of claim 2, wherein, The end of the limiting rod (332) is located below the limiting frame (331) and is horizontally bent, and the bending length is greater than the length of the limiting frame (331).

4. The exhaust treatment activated carbon adsorption apparatus of claim 1, wherein, The edge of the baffle (31) covering the communication between the shunt three-way pipe and the chamber is provided with a sealing strip.

5. The exhaust treatment activated carbon adsorption apparatus of claim 1, wherein, The inner wall of the chamber of the filter box (1) is provided with a support rod, the activated carbon filling plate (2) is placed on the top of the support rod, a limiting block is arranged above the support rod, the limiting block is installed on the inner wall of the chamber, and the distance between the limiting block and the support rod is consistent with the thickness of the activated carbon filling plate (2).

6. The exhaust treatment activated carbon adsorption apparatus of claim 5, wherein, A distance sensor for sensing the carbon layer of the activated carbon filling plate (2) is embedded in the limiting block.

7. The exhaust treatment activated carbon adsorption apparatus of claim 5, wherein, A gas detector for detecting volatile organic compounds is installed on the inner wall of the chamber of the filter box (1) and is located above the activated carbon filling plate (2).

8. The exhaust treatment activated carbon adsorption apparatus of claim 5, wherein, An odor sensor for sensing different odors is arranged at the communication between the collection three-way pipe and the chamber.

9. The exhaust treatment activated carbon adsorption apparatus of claim 1, wherein, A flow equalizing plate (4) is installed on the chamber of the filter box (1) and is located below the activated carbon filling plate (2), and an array of heater devices is embedded in the flow equalizing plate (4).

10. The exhaust treatment activated carbon adsorption apparatus of claim 1, wherein, Two box doors are hinged to the side of the filter box (1) away from the shunt three-way pipe, and the two box doors correspond to the two chambers one by one.

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