Industrial boiler flue gas activated carbon adsorption treatment structure capable of flue gas sampling

Abstract

The present application discloses to the technical field of boiler flue gas sampling, and relates to an industrial boiler flue gas activated carbon adsorption treatment structure capable of flue gas sampling. The structure comprises a pipeline assembly, and a sampling assembly is arranged in the pipeline assembly. The sampling assembly comprises a frame arranged in the pipeline assembly and a granular activated carbon layer arranged in the frame. When no flue gas sampling is performed, a plurality of sampling heads are embedded in the granular activated carbon layer in the frame. The granular activated carbon layer has an adsorption effect, which can adsorb dust, impurities and grease in the air to avoid blockage. In addition, when acidic flue gas is mixed with water vapor, an acidic corrosive solution is generated, which can buffer and isolate the sampling head, reduce the direct contact of the sampling head with the gas environment outside the granular activated carbon layer, and improve the service life of the sampling head.

Description

Technical Field

[0001] This invention relates to the field of boiler flue gas sampling technology, specifically to an activated carbon adsorption treatment structure for industrial boiler flue gas capable of sampling flue gas. Background Technology

[0002] Industrial boilers, as indispensable key equipment in industrial production, play a vital role in many fields such as power, chemical, textile, papermaking, and food processing. However, during operation, industrial boilers generate large amounts of flue gas containing various harmful substances (SO2, NO). x To effectively control industrial boiler flue gas pollution (including PM2.5, VOCs, and heavy metals), accurate sampling and analysis of the flue gas are necessary to provide a scientific basis for subsequent treatment measures.

[0003] In traditional flue gas sampling techniques, the sampling gun is usually exposed inside the flue when not sampling. This makes the sampling gun highly susceptible to corrosion from various corrosive components in the flue gas, such as sulfur dioxide, nitrogen oxides, and other acidic gases. Especially in the presence of water vapor, an acidic solution can be formed, which corrodes the metal material of the sampling gun, significantly shortening its service life and increasing the replacement frequency. This not only increases maintenance costs but also affects the continuity of sampling work.

[0004] Meanwhile, particulate matter in the flue gas can also contaminate the sampling gun. These particles may adhere to the surface and inside of the sampling gun, especially the filter part of the sampling gun head, which can easily cause blockage, leading to a decrease in sampling flow rate and affecting the sampling rate and the representativeness of the sample.

[0005] In addition, the high-temperature environment inside the flue and the high-speed flow of flue gas will cause wear on the sampling gun, further reducing its performance and service life.

[0006] Based on this, the present invention designs an activated carbon adsorption treatment structure for industrial boiler flue gas that can sample flue gas, in order to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide an activated carbon adsorption treatment structure for industrial boiler flue gas that can sample flue gas, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an activated carbon adsorption treatment structure for industrial boiler flue gas capable of flue gas sampling, comprising a pipeline assembly, wherein a sampling component is disposed inside the pipeline assembly, and the sampling component comprises:

[0009] The frame is located inside the pipe assembly;

[0010] A granular activated carbon layer is disposed inside the frame;

[0011] The sampling head is positioned in the middle of the granular activated carbon layer;

[0012] A drive assembly is used to move the sampling head from the middle of the granular activated carbon layer to one side of the frame in the direction of flue gas flow.

[0013] As a further aspect of the present invention, there is at least one sampling head.

[0014] As a further embodiment of the present invention, the frame is rotatably disposed inside the pipe assembly, and both sides of the frame are provided with circular venting plates. The diameter of the venting plates is smaller than the diameter of the side walls of the frame, and the filling area of ​​the granular activated carbon layer is larger than the venting plates but smaller than the overall area of ​​the inner wall of the frame.

[0015] The drive assembly includes a mounting frame and a linear drive unit corresponding to the number of sampling heads. The sampling heads are all slidably connected to the mounting frame. The mounting frame is disposed on the inner wall of the frame. The frame is rotatably connected to the inside of the pipe assembly.

[0016] The linear drive unit is used to drive the sampling head to move linearly during the rotation of the frame.

[0017] As a further embodiment of the present invention, the linear drive unit includes a drive rod and a push rod. The bottom end of the drive rod is slidably connected to the mounting frame. A cavity is provided inside the mounting frame. The push rod is located inside the cavity. The bottom end of the push rod is rotatably connected to the sampling head. A pressure rod is rotatably connected to the top end of the push rod. The pressure rod is elastically slidably connected to the inner wall of the mounting frame. The top end of the drive rod slides through the frame. Several contact blocks are provided on the side wall of the pipe assembly.

[0018] As a further embodiment of the present invention, the side wall of the frame corresponding to the flue gas flow direction is provided with a plurality of housings corresponding to the sampling head. The housings are all slidably connected to the sampling head, and the housings are fixedly connected to the vent plate. The housings are all rotatably connected to the inside of the housings, and the side wall of the cover plate is rotatably and slidably connected to the sampling head.

[0019] As a further embodiment of the present invention, a filter screen is provided on the inner wall of each sampling head.

[0020] As a further embodiment of the present invention, a plurality of inclined plates are fixed inside the frame.

[0021] As a further embodiment of the present invention, the bottom end of the inclined plate is tilted toward the side away from the flue gas flow direction.

[0022] As a further embodiment of the present invention, the inner wall of the mounting frame is provided with an airflow channel.

[0023] As a further embodiment of the present invention, a conveying pipe is fixedly provided on the mounting frame, and a storage pipe is provided on the pipe assembly, the storage pipe being slidably connected to the frame.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In this invention, when no flue gas sampling is being performed, several sampling heads are embedded inside the granular activated carbon layer within the frame. The granular activated carbon layer has an adsorption function, which can adsorb dust, impurities, and grease in the air to prevent clogging. It can also buffer and isolate the sampling heads from the acidic corrosive solution generated when acidic flue gas mixes with water vapor, reducing direct contact between the sampling heads and the external gas environment of the granular activated carbon layer and improving the service life of the sampling heads.

[0026] 2. In this invention, the granular activated carbon layer can roll inside the frame during rotation, thereby allowing the granular activated carbon particles to rotate and change space simultaneously. This causes the activated carbon particles on one side of the adsorption surface to change, preventing the activated carbon particles on one side from adsorbing for a long time and reducing the time it takes to reach saturation (especially when the flue gas contains condensate or water vapor, the adsorption efficiency will be greatly reduced after the activated carbon particles are mixed with dust and wetted). This improves the service life and reduces the replacement frequency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 These are internal cross-sectional views of flue gas flow pipe one and flue gas flow pipe two of the present invention;

[0029] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0030] Figure 4 This is a schematic diagram of the internal structure of the frame of the present invention;

[0031] Figure 5 This is a cross-sectional view of the mounting frame, sampling tube, and frame of the present invention;

[0032] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0033] Figure 7 for Figure 5 A magnified view of a section at point C;

[0034] Figure 8 This is a schematic diagram showing the connection relationship between the sampling tube, push rod, and pressure rod of the present invention;

[0035] Figure 9This is a schematic diagram of the granular activated carbon layer filling the inside of the frame according to the present invention;

[0036] Figure 10 This is a schematic diagram of the connection between multiple frames and multiple pipes in this invention.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 1. Pipe assembly; 101. Flue gas flow pipe one; 102. Flue gas flow pipe two; 2. Frame; 201. Ventilation plate; 3. Granular activated carbon layer; 4. Sampling head; 401. Filter screen; 402. Flow sensor; 5. Mounting frame; 501. Airflow channel; 502. Delivery pipe; 503. Storage pipe; 6. Drive rod; 7. Push rod; 8. Pressure rod; 801. Spring; 9. Contact block; 10. Housing; 11. Cover plate; 1101. Slide groove; 12. Inclined plate. Detailed Implementation

[0039] Please see Figures 1-10 This invention provides a technical solution: an activated carbon adsorption treatment structure for industrial boiler flue gas capable of flue gas sampling, comprising a pipe assembly 1, which consists of a flue gas flow pipe 101 and a flue gas flow pipe 102. A sampling component is provided inside the pipe assembly 1, comprising a frame 2, a granular activated carbon layer 3, at least one sampling head 4, and a driving component. The frame 2 is disposed inside the pipe assembly 1, the granular activated carbon layer 3 is disposed inside the frame 2, the sampling head 4 is disposed in the middle of the granular activated carbon layer 3, and the driving component is used to drive the sampling head 4 to move from the middle of the granular activated carbon layer 3 to one side of the frame 2 in the flue gas flow direction.

[0040] As a further embodiment of the present invention, the frame 2 is rotatably disposed between the flue gas flow pipe 101 and the flue gas flow pipe 202. Both sides of the frame 2 are provided with circular air permeable plates 201. The diameter of the air permeable plates 201 is smaller than the diameter of the side walls of the frame 2. The filling area of ​​the granular activated carbon layer 3 is larger than the air permeable plates 201 but smaller than the entire area of ​​the inner wall of the frame 2.

[0041] The drive assembly includes a mounting frame 5 and a linear drive unit corresponding to the number of sampling heads 4. The sampling heads 4 are all slidably connected to the mounting frame 5. The mounting frame 5 is set on the inner wall of the frame 2. The frame 2 is rotatably connected to the inside of the pipe assembly 1.

[0042] The linear drive unit is used to drive the sampling head 4 to move linearly during the rotation of the frame 2.

[0043] The linear drive unit includes a drive rod 6 and a push rod 7. The bottom end of the drive rod 6 is slidably connected to the mounting frame 5. The mounting frame 5 has a cavity inside, and the push rod 7 is located inside the cavity. The bottom end of the push rod 7 is rotatably connected to the sampling head 4. The top end of the push rod 7 is rotatably connected to a pressure rod 8. The pressure rod 8 is slidably connected to the inner wall of the mounting frame 5. A spring 801 is fixedly connected between the pressure rod 8 and the mounting frame 5. The top end of the drive rod 6 slides through the frame 2. Several contact blocks 9 are provided on the side wall of the flue gas flow pipe 102.

[0044] The frame 2 has several housings 10 corresponding to the sampling head 4 on its side wall in the direction of flue gas flow. The housings 10 are slidably connected to the sampling head 4. The housings 10 are fixedly connected to the vent plate 201. The housings 10 are rotatably connected to the inside of each housing 10. The side wall of the cover plate 11 is rotatably and slidably connected to the sampling head 4.

[0045] like Figure 1 , Figure 2 , Figures 4-9 As shown:

[0046] When flue gas circulates, it flows from flue gas flow pipe 101 through frame 2 and the granular activated carbon layer 3 inside to flue gas flow pipe 2 102, where the granular activated carbon layer 3 adsorbs harmful components.

[0047] When not sampling flue gas, several sampling heads 4 are embedded inside the granular activated carbon layer 3 within the frame 2. The granular activated carbon layer 3 has an adsorption function, which can adsorb dust, impurities, and grease in the air to prevent clogging. It can also buffer and isolate the sampling heads 4 from the acidic corrosive solution generated when acidic flue gas mixes with water vapor, reducing direct contact between the sampling heads 4 and the external gas environment of the granular activated carbon layer 3. It can also reduce wear caused by high-speed flue gas flow. At the same time, for high-temperature flue gas environments, the granular activated carbon layer can adsorb heat to a certain extent, which can play a heat insulation role, reducing the direct impact of high temperature on the sampling heads 4 and preventing problems such as material aging and deformation caused by long-term exposure to high temperature. This extends the service life and replacement cycle of the sampling heads 4.

[0048] like Figure 9 As shown, the diameter of the breathable plate 201 is L2, the diameter of the filling area of ​​the granular activated carbon layer 3 inside the frame 2 is L1 (the distance between point P and point P1), and L3 is the empty area inside the frame 2 (the distance between point P1 and point P3).

[0049] Flue gas sampling work:

[0050] Rotate the frame 2, and the mounting frame 5 and the drive rod 6 rotate synchronously. During the rotation of the drive rod 6, it will contact the contact block 9 set on the flue gas flow pipe 102. The two ends of the contact block 9 gradually increase towards the middle, so that the drive rod 6 will slide along the frame 2 into the mounting frame 5 and press down the pressure rod 8 and compress the spring 801. The pressure rod 8 pushes the sampling head 4 from the inside of the granular activated carbon layer 3 along the mounting frame 5 towards the flue gas flow pipe 101 through the push rod 7. During this process, the sampling head 4 slides into the shell 10 and the end slides in the groove 1101 opened in the inner side wall of the cover plate 11, thereby pushing the cover plate 11 to rotate outward from the vertical closed state, thereby releasing the cover plate 11 from the closed state. At this time, the flue gas can move into the sampling head 4, thereby completing the sampling.

[0051] When the drive rod 6 disengages from the contact block 9, the elastic action of the spring 801 causes the sampling head 4 to reset, and the cover plate 11 closes.

[0052] Because multiple sampling heads 4 are set on the mounting frame 5, multiple sampling points can be performed on the same plane as the sampling heads 4 rotate with the mounting frame 5. Multiple sampling points are performed along the flue gas flow path to ensure that the collected flue gas samples are representative and can more comprehensively reflect the true situation of the flue gas in the flue. This avoids the possibility of differences in flue gas composition and concentration at different locations when sampling at fixed points, and improves the accuracy of subsequent analysis and processing.

[0053] Furthermore, during the rotation of the frame 2, because the filling area L1 of the granular activated carbon layer 3 is larger than the diameter area L2 of the permeable plate 201, and there is an empty area L3, during the multi-point sampling process of the frame 2 rotation, while the filling area L1 is covered by the permeable plate 201 diameter area L2 (without affecting the treatment of flue gas by the granular activated carbon layer 3), the granular activated carbon layer 3 can roll inside the frame 2. This allows the granular activated carbon particles to rotate and undergo spatial transformation, thereby changing the activated carbon particles located on the adsorption surface (the side near the flue gas flow pipe - 101). This prevents the activated carbon particles on one side from adsorbing for a long time, reducing the time it takes to reach saturation (especially when the flue gas contains condensate or water vapor, the adsorption efficiency will be greatly reduced after the activated carbon particles are mixed with dust and wetted). This improves the service life and replacement frequency.

[0054] like Figure 6 As shown, a flow sensor 402 is installed inside the sampling head 4 for flow detection.

[0055] In this embodiment, the frame 2 can be rotated manually or by mechanical means, such as by setting teeth on the outer surface of the frame 2, and then setting a motor on the flue gas flow pipe 101 or flue gas flow pipe 102, so that the motor drives the gear at its output end to mesh with the frame 2 to rotate. This is common knowledge to those skilled in the art and the prior art, and will not be described in detail or shown in the figure here.

[0056] Moreover, such as Figure 10 As shown, multiple frames 2 can be combined with pipe components 1 (i.e., multiple frames 2 can be respectively placed between multiple adjacent pipes) to form a modular assembly.

[0057] The inner wall of the sampling head 4 is equipped with a filter screen 401.

[0058] like Figure 6 As shown: Filter 401 can filter impurities when cover 11 is open, reducing the possibility of clogging.

[0059] Several inclined plates 12 are fixed inside the frame 2. The inclined plates 12 can be connected to the vent plate 201 by bolts, or connected to the frame 2 at a position slightly higher than the vent plate 201.

[0060] The bottom end of the inclined plate 12 is tilted away from the direction of flue gas flow.

[0061] like Figure 2 , Figure 4 , Figure 5 and Figure 9 The inclined plate 12 shown is positioned on the ventilated plate 201 near the edge;

[0062] As the frame 2 rotates, the granular activated carbon flows inside the frame 2. The presence of the inclined plate 12 can disturb the granular activated carbon inside the frame 2. The bottom end of the inclined plate 12 is tilted away from the flue gas flow direction (i.e., the side of the flue gas flow pipe 102), which can guide the activated carbon particles to a certain extent, so that the activated carbon on the adsorption surface side can flow away from the adsorption surface side, thereby improving the efficiency of disturbing the activated carbon particles, and thus achieving the spatial position exchange between the activated carbon particles "located on the adsorption surface side" and the activated carbon particles "away from the adsorption surface side".

[0063] An airflow channel 501 is provided on the inner wall of the mounting frame 5.

[0064] A conveying pipe 502 is fixed on the mounting frame 5, and a storage pipe 503 is provided on the pipe assembly 1. The storage pipe 503 is slidably connected to the frame 2.

[0065] like Figures 4-7 As shown:

[0066] After the flue gas collected by the sampling head 4 enters the inside of the mounting frame 5, it flows into the storage pipe 503 through the delivery pipe 502. A collection pipe can be connected to the side wall of the storage pipe 503 to send the collected flue gas into the detection equipment for detection.

Claims

1. An activated carbon adsorption treatment structure for industrial boiler flue gas capable of flue gas sampling, comprising a pipe assembly (1), characterized in that: The pipe assembly (1) is internally provided with a sampling component, the sampling component comprising: The frame (2) is located inside the pipe assembly (1); A granular activated carbon layer (3) is disposed inside the frame (2); The sampling head (4) is positioned in the middle of the granular activated carbon layer (3); A driving component is used to drive the sampling head (4) to move from the middle of the granular activated carbon layer (3) to one side of the frame (2) in the direction of flue gas flow. There shall be at least one sampling head (4); The frame (2) is rotatably disposed inside the pipe assembly (1). Both sides of the frame (2) are provided with circular air-permeable plates (201). The diameter of the air-permeable plates (201) is smaller than the diameter of the side walls of the frame (2). The filling area of ​​the granular activated carbon layer (3) is larger than the air-permeable plates (201) but smaller than the entire area of ​​the inner wall of the frame (2). The drive assembly includes a mounting frame (5) and a linear drive unit corresponding to the number of sampling heads (4). The sampling heads (4) are all slidably connected to the mounting frame (5). The mounting frame (5) is set on the inner wall of the frame (2). The frame (2) is rotatably connected to the inside of the pipe assembly (1). The linear drive unit is used to drive the sampling head (4) to move linearly during the rotation of the frame (2); The linear drive unit includes a drive rod (6) and a push rod (7). The bottom end of the drive rod (6) is slidably connected to the mounting frame (5). The mounting frame (5) has a cavity inside. The push rod (7) is located inside the cavity. The bottom end of the push rod (7) is rotatably connected to the sampling head (4). The top end of the push rod (7) is rotatably connected to a pressure rod (8). The pressure rod (8) is elastically slidably connected to the inner wall of the mounting frame (5). The top end of the drive rod (6) slides through the frame (2). The side wall of the pipe assembly (1) is provided with several contact blocks (9). The frame (2) has several housings (10) corresponding to the sampling head (4) on the side wall corresponding to the flue gas flow direction. The housings (10) are all slidably connected to the sampling head (4). The housings (10) are fixedly connected to the vent plate (201). The housings (10) are all rotatably connected to the inside of the housings (10). The side wall of the cover plate (11) is rotatably and slidably connected to the sampling head (4).

2. The activated carbon adsorption treatment structure for industrial boiler flue gas sampling according to claim 1, characterized in that: The inner wall of the sampling head (4) is provided with a filter screen (401).

3. The activated carbon adsorption treatment structure for industrial boiler flue gas sampling according to claim 1, characterized in that: The frame (2) has several inclined plates (12) fixed inside.

4. The activated carbon adsorption treatment structure for industrial boiler flue gas sampling according to claim 3, characterized in that: The bottom end of the inclined plate (12) is tilted away from the direction of flue gas flow.

5. The activated carbon adsorption treatment structure for industrial boiler flue gas sampling according to claim 1, characterized in that: The inner wall of the mounting frame (5) is provided with an airflow channel (501).

6. The activated carbon adsorption treatment structure for industrial boiler flue gas sampling according to claim 5, characterized in that: The mounting frame (5) is fixed with a conveying pipe (502), and the pipe assembly (1) is provided with a storage pipe (503), which is slidably connected to the frame (2).

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