Dioxin emission detection device and detection method

Abstract

The invention discloses a dioxin emission detection device and detection method, and belongs to the technical field of environmental protection detection, and the dioxin emission detection device comprises a waste gas receiving pipeline, a first valve, a steering connection assembly, an air pump, a detection pipeline, a gravity dust collector, a condenser, a laser particle counter, a second valve, a buffer box and a tail gas treatment assembly, a gas inlet of the waste gas receiving pipeline is connected with a waste gas emission source, one end of the waste gas receiving pipeline far away from the gas inlet is connected with one end of the steering connection assembly, and the other end of the steering connection assembly is connected with one end of the detection pipeline. The other end of the detection pipeline is sequentially connected with an air pump, a gravity dust collector, a condenser, a buffer tank, a second valve and a tail gas treatment assembly and is connected with the outside through an air outlet; a branch pipeline is arranged at the buffer tank and is connected with a laser particle counter; the device is provided with the steering connecting assembly, can be connected with waste gas receiving pipelines at different angles during use, and is matched with an air pump and a laser particle counter to measure waste gas in different pipelines.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmental protection detection, and in particular relates to a dioxin emission detection device and a detection method. Background Art

[0002] Dioxins are substances with high melting points and high boiling points. They are colorless crystals at room temperature. Since dioxins have symmetrical structures in both horizontal and vertical directions, their chemical properties are very stable. They are stable not only to acids and bases, but also to oxidation and reduction. The solubility in water is very low. Although it is lipophilic, its solubility in organic solvents is still low. It is very soluble in fat and easily accumulates in the human body. Dioxins are very stable at low temperatures, but they are easy to decompose when the temperature exceeds 750°C. In addition, they are also easily decomposed under ultraviolet rays, but decompose very slowly under biological action. They are easily adsorbed by soil and often cause serious pollution to the atmosphere, soil, rivers, lakes, oceans, etc. in the environment. Dioxins do not exist naturally. Waste incineration, smelting, automobile exhaust, papermaking, pesticides, PCB (polychlorinated biphenyl) production, etc. can produce dioxins, among which the dioxins produced by waste incineration account for a large proportion.

[0003] The existing devices only detect the waste gas generated by a single waste incineration plant through the detection device, and the detection efficiency is low. Therefore, how to provide a dioxin emission detection device and detection method is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] The main purpose of the present invention is to provide a dioxin emission detection device and detection method to solve the above technical problems. The device is provided with a steering connection component, which can be connected to exhaust gas receiving pipes at different angles when in use, and cooperate with an air pump and a laser particle counter to measure the exhaust gas in different pipes to improve the detection efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A dioxin emission detection device comprises an exhaust gas receiving pipe, a first valve, a steering connection component, an air pump, a detection pipe, a gravity dust collector, a condenser, a laser particle counter, a second valve, a buffer box and an exhaust gas treatment component, wherein an air inlet of the exhaust gas receiving pipe is connected to an exhaust gas emission source, an end of the exhaust gas receiving pipe away from the air inlet is connected to one end of the steering connection component, and the other end of the steering connection component is connected to one end of the detection pipe, the other end of the detection pipe is sequentially connected to the air pump, the gravity dust collector, the condenser, the buffer box, the second valve and the exhaust gas treatment component and is connected to the outside through an air outlet, and a branch pipe is arranged at the buffer box to be connected to the laser particle counter.

[0006] Furthermore, the steering connection assembly includes a connecting pipe, a pipe connecting mechanism and a direction control mechanism, one end of the connecting pipe is connected to the pipe connecting mechanism, and the other end is connected to the direction control mechanism, the end of the pipe connecting mechanism away from the connecting pipe is connected to the exhaust gas receiving pipe, and the end of the direction control mechanism away from the connecting pipe is connected to the detection pipe.

[0007] Furthermore, the pipe connecting mechanism includes a fixed shell, one end of the fixed shell is fixed to the outer wall of the connecting pipe, and the other end is sleeved on the rotating block, a first bearing is provided at the connection between the rotating block and the fixed shell, the connecting pipe is located on the outer wall of one end of the fixed shell and a clamping block and a second bearing are provided, the rotating block is provided with a first slot at one end close to the connecting pipe, the rotating block is rotatably connected to the first slot on the connecting pipe through the clamping block and the second bearing, the connecting pipe is connected to the rotating block and the inner wall at one end is provided with a first slot, and the connecting block is slidably connected to the connecting block through the first slot, the connecting block is threadedly connected to the rotating block, and the end of the connecting block away from the first slot is slidably connected to the exhaust gas receiving pipe, a second gear is fixedly installed on the rotating block, a first motor is fixedly provided on the inner wall of the fixed shell, the output end of the first motor is connected to the first gear, and the first gear and the second gear are meshed with each other.

[0008] Furthermore, the direction control mechanism includes a steering control shell, one end of the steering control shell is fixed on the detection pipe, and the other end is rotatably connected to the connecting pipe through a fourth bearing, a second slot is provided on the inner wall of one end of the connecting pipe located at the steering control shell, a third bearing is provided on one end of the detection pipe close to the connecting pipe, the detection pipe is rotatably connected to the second slot on the connecting pipe through the third bearing, a worm gear is provided on the outer wall of one end of the connecting pipe located at the steering control shell, a second motor is fixedly provided on the inner wall of the steering control shell, an output end of the second motor is fixedly connected to one end of the worm, and the worm and the worm gear are meshed with each other.

[0009] Furthermore, the exhaust gas treatment component includes a first exhaust gas treatment chamber and a second exhaust gas treatment chamber, the first exhaust gas treatment chamber and the second exhaust gas treatment chamber are both fixedly arranged on the detection pipe, the first exhaust gas treatment chamber is provided with a plurality of second slide grooves, the second slide grooves are each slidably connected with an activated carbon plate, and the second exhaust gas treatment chamber is provided with a plurality of ultraviolet lamps.

[0010] Furthermore, the condenser comprises a condensation shell arranged around the detection pipe, a condensation cavity is arranged in the condensation shell, a water inlet is arranged at the bottom end of the condensation shell, and a water outlet is arranged at the top end of the condensation shell.

[0011] A method for detecting dioxin emissions comprises the following steps: Step 1, one end of a plurality of exhaust gas receiving pipes is fixed on the same horizontal plane around the connecting pipe, and the direction is controlled by a direction control mechanism to rotate to the exhaust gas receiving pipe designated for connection detection, and the connecting pipe and the exhaust gas receiving pipe are connected by a pipe connecting mechanism; Step 2, opening the first valve to allow the exhaust gas to enter the exhaust gas receiving pipe, and starting the air pump to allow the exhaust gas to enter the detection pipe along the connecting pipe; Step 3, starting the gravity dust collector and the condenser to remove dust from the exhaust gas and then condense it; Step 4, after the waste gas enters the buffer box, the dioxin content in the waste gas is detected by a laser particle counter; Step 5, close the first valve, open the second valve, and the exhaust gas after the detection is completed is discharged from the detection pipeline through the second valve, the first exhaust gas treatment chamber and the second exhaust gas treatment chamber under the action of the air pump, and the residual exhaust gas in all pipelines is cleaned by the air pump; Step 6: After cleaning is completed, connect it to other exhaust gas receiving pipes through the direction control mechanism and the pipe connection mechanism.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a steering connection assembly, which can connect exhaust gas receiving pipes at different angles when in use, and cooperate with an air pump and a laser particle counter to measure the exhaust gas in different pipes, thereby improving the detection efficiency; under the action of the rotating block, the connecting block can be driven to move along the first sliding groove in the connecting pipe; the mutual cooperation of the worm gear can realize the steering of the connecting pipe and measure the exhaust gas in different exhaust gas receiving pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a schematic diagram of the local structure of location A of the present invention.

[0016] Figure 3 It is a schematic diagram of the local structure of location B of the present invention.

[0017] Figure 4 It is a schematic diagram of the local structure of location C of the present invention.

[0018] Figure 5 This is a schematic diagram of the structure of the exhaust gas receiving pipeline.

[0019] Among them, 1-air inlet, 2-first valve, 3-pipeline connecting mechanism, 3.1-fixed housing, 3.2-first motor, 3.3-first gear, 3.4-rotating block, 3.5-first bearing, 3.6-second gear, 3.7-second bearing, 3.8-connecting block, 4-connecting pipeline, 5-direction control mechanism, 5.1-third bearing, 5.2-fourth bearing, 5.3-worm gear, 5.4-steering control housing, 5.5-worm, 5.6-second motor, 6-detection pipeline, 7-gravity dust collector, 8-condenser, 9-laser particle counter, 10-buffer box, 11-second valve, 12-first exhaust gas treatment chamber, 12.1-activated carbon plate, 13-second exhaust gas treatment chamber, 13.1-ultraviolet lamp, 14-air outlet, 15-exhaust gas receiving pipeline, 16-air pump. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 5 As shown, the present invention provides a dioxin emission detection device, including an exhaust gas receiving pipe 15, a first valve 2, a steering connection component, an air pump 16, a detection pipe 6, a gravity dust collector 7, a condenser 8, a laser particle counter 9, a second valve 11, a buffer box 10 and an exhaust gas treatment component, wherein the air inlet 1 of the exhaust gas receiving pipe 15 is connected to the exhaust gas emission source, the end of the exhaust gas receiving pipe 15 away from the air inlet 1 is connected to one end of the steering connection component, the other end of the steering connection component is connected to one end of the detection pipe 6, the other end of the detection pipe 6 is sequentially connected to the air pump 16, the gravity dust collector 7, the condenser 8, the buffer box 10, the second valve 11 and the exhaust gas treatment component and connected to the outside through the air outlet 14, the buffer box 10 is provided with a branch pipe connected to the laser particle counter 9, and the laser particle counter 9 can measure the dioxin content in the exhaust gas; the air pump 16 can drive the exhaust gas to move in each pipe.

[0022] In this embodiment, the steering connection assembly includes a connecting pipe 4, a pipe connecting mechanism 3 and a direction control mechanism 5. One end of the connecting pipe 4 is connected to the pipe connecting mechanism 3, and the other end is connected to the direction control mechanism 5. The end of the pipe connecting mechanism 3 away from the connecting pipe 4 is connected to the exhaust gas receiving pipe 15, and the end of the direction control mechanism 5 away from the connecting pipe 4 is connected to the detection pipe 6.

[0023] In this embodiment, the pipeline connection mechanism 3 includes a fixed shell 3.1, one end of the fixed shell 3.1 is fixed to the outer wall of the connecting pipe 4, and the other end is sleeved on the rotating block 3.4. A first bearing 3.5 is provided at the connection between the rotating block 3.4 and the fixed shell 3.1. A clamping block and a second bearing 3.7 are provided on the outer wall of one end of the connecting pipe 4 located at the fixed shell 3.1. A first clamping groove is provided at one end of the rotating block 3.4 close to the connecting pipe 4. The rotating block 3.4 is rotatably connected to the first clamping groove on the connecting pipe 4 through the clamping block and the second bearing 3.7. The connecting pipe 4 is connected to the rotating block 3.5. A first slide groove is arranged on the inner wall of one end of the housing 3.4, and a connecting block 3.8 is slidably connected to the connecting block 3.8 through the first slide groove. The connecting block 3.8 is threadedly connected to the rotating block 3.4. One end of the connecting block 3.8 away from the first slide groove is slidably connected to the exhaust gas receiving pipe 15. A second gear 3.6 is fixedly mounted on the rotating block 3.4. A first motor 3.2 is fixedly arranged on the inner wall of the fixed housing 3.1. A first gear 3.3 is connected to the output end of the first motor 3.2. The first gear 3.3 and the second gear 3.6 are meshed with each other. The rotating block 3.4 can push the connecting block 3.8 to move along the first slide groove by rotating.

[0024] In this embodiment, the direction control mechanism 5 includes a steering control housing 5.4, one end of which is fixed on the detection pipe 6, and the other end is rotatably connected to the connecting pipe 4 through a fourth bearing 5.2. A second slot is provided on the inner wall of the connecting pipe 4 at one end of the steering control housing 5.4, and a third bearing 5.1 is provided on the end of the detection pipe 6 close to the connecting pipe 4. The detection pipe 6 is rotatably connected to the second slot on the connecting pipe 4 through the third bearing 5.1. A worm gear 5.3 is provided on the outer wall of the connecting pipe 4 at one end of the steering control housing 5.4, and a second motor 5.6 is fixedly provided on the inner wall of the steering control housing 5.4, and the output end of the second motor 5.6 is fixedly connected to one end of a worm 5.5, and the worm 5.5 and the worm wheel 5.3 are meshed with each other; the worm wheel 5.3 and the worm 5.5 can realize the rotation of the detection pipe 6.

[0025] In this embodiment, the exhaust gas treatment component includes a first exhaust gas treatment chamber 12 and a second exhaust gas treatment chamber 13. The first exhaust gas treatment chamber 12 and the second exhaust gas treatment chamber 13 are both fixedly arranged on the detection pipe 6. The first exhaust gas treatment chamber 12 is provided with a plurality of second slide grooves. The second slide grooves are each slidably connected with an activated carbon plate 12.1. The second exhaust gas treatment chamber 13 is provided with a plurality of ultraviolet lamps 13.1. The ultraviolet lamps 13.1 can decompose dioxins. The activated carbon plates 12.1 can adsorb dioxin particles.

[0026] In this embodiment, the condenser 8 includes a condensation shell arranged around the detection pipe 6, a condensation cavity is arranged in the condensation shell, a water inlet is arranged at the bottom of the condensation shell, and a water outlet is arranged at the top of the condensation shell. The condenser 8 can reduce the exhaust gas temperature to ensure the stability of dioxins, making the detection more accurate.

[0027] A method for detecting dioxin emissions comprises the following steps: Step 1, one end of multiple exhaust gas receiving pipes 15 is fixed on the same horizontal plane around the connecting pipe 4, and the direction is controlled by the direction control mechanism 5 to rotate to the exhaust gas receiving pipe 15 designated for connection detection, and the connecting pipe 4 and the exhaust gas receiving pipe 15 are connected through the pipe connecting mechanism 3; when the direction control mechanism 5 is running, the worm 5.5 is driven by the second motor 5.6, and the worm 5.5 drives the worm wheel 5.3 and the connecting pipe 4 to rotate to control the direction of the connected exhaust gas receiving pipe 15; the pipe connecting mechanism 3 drives the first gear 3.3 to rotate by the first motor 3.2, the first gear 3.3 drives the second gear 3.6 to rotate, and the second gear 3.6 drives the rotating block 3.4 to rotate, and the rotating block 3.4 is connected to the connecting block 3.8 by threads. When the rotating block 3.4 rotates, it drives the connecting block 3.8 to slide along the first slide groove, so that the connecting block 3.8 is connected or disconnected from the exhaust gas receiving pipe 15.

[0028] Step 2, opening the first valve 2 to allow the exhaust gas to enter the exhaust gas receiving pipe 15, and starting the air pump 16 to allow the exhaust gas to enter the detection pipe 6 along the connecting pipe 4; Step 3, start the gravity dust collector 7 and the condenser 8 to remove dust from the exhaust gas and then condense it; Step 4, after the waste gas enters the buffer box 10, the dioxin content in the waste gas is detected by the laser particle counter 9; Step 5, close the first valve 2, open the second valve 11, and the exhaust gas after the detection is completed is discharged from the detection pipeline 6 through the second valve 11, the first exhaust gas treatment chamber 12 and the second exhaust gas treatment chamber 13 under the action of the air pump 16, and the residual exhaust gas in all pipelines is cleaned by the air pump 16; the activated carbon plate 12.1 in the first exhaust gas treatment chamber 12 can absorb dioxins in the exhaust gas; the ultraviolet rays generated by the ultraviolet lamp 13.1 can treat the residual dioxins so that the dioxin content in the exhaust gas is reduced; Step 6: After cleaning is completed, the exhaust gas is connected to other exhaust gas receiving pipes 15 through the direction control mechanism 5 and the pipe connection mechanism 3.

[0029] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dioxin emission detection device, characterized in that: The invention comprises an exhaust gas receiving pipe (15), a first valve (2), a steering connection component, an air pump (16), a detection pipe (6), a gravity dust collector (7), a condenser (8), a laser particle counter (9), a second valve (11), a buffer box (10) and an exhaust gas treatment component, wherein the air inlet (1) of the exhaust gas receiving pipe (15) is connected to the exhaust gas emission source, the end of the exhaust gas receiving pipe (15) away from the air inlet (1) is connected to one end of the steering connection component, the other end of the steering connection component is connected to one end of the detection pipe (6), the other end of the detection pipe (6) is connected to the air pump (16), the gravity dust collector (7), the condenser (8), the buffer box (10), the second valve (11) and the exhaust gas treatment component in sequence and is connected to the outside through the air outlet (14), and the buffer box (10) is provided with a branch pipe connected to the laser particle counter (9).

2. A dioxin emission detection device according to claim 1, characterized in that: The steering connection assembly comprises a connecting pipe (4), a pipe connecting mechanism (3) and a direction control mechanism (5); one end of the connecting pipe (4) is connected to the pipe connecting mechanism (3), and the other end is connected to the direction control mechanism (5); an end of the pipe connecting mechanism (3) away from the connecting pipe (4) is connected to an exhaust gas receiving pipe (15); and an end of the direction control mechanism (5) away from the connecting pipe (4) is connected to a detection pipe (6).

3. A dioxin emission detection device according to claim 2, characterized in that: The pipeline connection mechanism (3) comprises a fixed shell (3.1), one end of the fixed shell (3.1) is fixed to the outer wall of the connecting pipe (4), and the other end is sleeved on the rotating block (3.4), a first bearing (3.5) is provided at the connection between the rotating block (3.4) and the fixed shell (3.1), a clamping block and a second bearing (3.7) are provided on the outer wall of one end of the connecting pipe (4) located at the fixed shell (3.1), a first clamping groove is provided at one end of the rotating block (3.4) close to the connecting pipe (4), the rotating block (3.4) is rotatably connected to the first clamping groove on the connecting pipe (4) through the clamping block and the second bearing (3.7), The connecting pipe (4) is connected to the rotating block (3.4), and the inner wall of one end thereof is provided with a first slide groove, and the connecting block (3.8) is slidably connected to the rotating block (3.4), the connecting block (3.8) is threadedly connected to the rotating block (3.4), and the end of the connecting block (3.8) away from the first slide groove is slidably connected to the exhaust gas receiving pipe (15), a second gear (3.6) is fixedly mounted on the rotating block (3.4), a first motor (3.2) is fixedly mounted on the inner wall of the fixed housing (3.1), an output end of the first motor (3.2) is connected to a first gear (3.3), and the first gear (3.3) and the second gear (3.6) are meshed with each other.

4. A dioxin emission detection device according to claim 2, characterized in that: The direction control mechanism (5) comprises a steering control housing (5.4); one end of the steering control housing (5.4) is fixed on the detection pipe (6); the other end is rotatably connected to the connecting pipe (4) via a fourth bearing (5.2); a second slot is arranged on the inner wall of one end of the connecting pipe (4) located on the steering control housing (5.4); a third bearing (5.1) is arranged on the end of the detection pipe (6) close to the connecting pipe (4); the detection pipe (6) is rotatably connected to the second slot on the connecting pipe (4) via the third bearing (5.1); a worm gear (5.3) is arranged on the outer wall of one end of the connecting pipe (4) located on the steering control housing (5.4); a second motor (5.6) is fixedly arranged on the inner wall of the steering control housing (5.4); an output end of the second motor (5.6) is fixedly connected to one end of a worm (5.5); the worm (5.5) and the worm gear (5.3) are meshed with each other.

5. A dioxin emission detection device according to claim 1, characterized in that: The exhaust gas treatment component comprises a first exhaust gas treatment chamber (12) and a second exhaust gas treatment chamber (13); the first exhaust gas treatment chamber (12) and the second exhaust gas treatment chamber (13) are both fixedly arranged on the detection pipe (6); the first exhaust gas treatment chamber (12) is provided with a plurality of second slide grooves, each of the second slide grooves is slidably connected with an activated carbon plate (12.1); and the second exhaust gas treatment chamber (13) is provided with a plurality of ultraviolet lamps (13.1).

6. A dioxin emission detection device according to claim 1, characterized in that: The condenser (8) comprises a condensation shell arranged around the detection pipe (6), a condensation cavity is arranged in the condensation shell, a water inlet is arranged at the bottom end of the condensation shell, and a water outlet is arranged at the top end of the condensation shell.

7. A method for detecting dioxin emissions, implemented using the detection device according to any one of claims 1 to 6, characterized in that: The steps include: Step 1, one end of a plurality of exhaust gas receiving pipes (15) is fixed on the same horizontal plane around a connecting pipe (4), and the direction is controlled by a direction control mechanism (5) to rotate to a designated exhaust gas receiving pipe (15) for connection inspection, and at the same time, the connecting pipe (4) and the exhaust gas receiving pipe (15) are connected by a pipe connection mechanism (3); Step 2, opening the first valve (2) to allow the exhaust gas to enter the exhaust gas receiving pipe (15), and starting the air pump (16) to allow the exhaust gas to enter the detection pipe (6) along the connecting pipe (4); Step 3, starting the gravity dust collector (7) and the condenser (8) to remove dust from the exhaust gas and then condense it; Step 4, after the waste gas enters the buffer box (10), the dioxin content in the waste gas is detected by a laser particle counter (9); Step 5, closing the first valve (2) and opening the second valve (11), and the exhaust gas after the detection is discharged from the detection pipeline (6) through the second valve (11), the first exhaust gas treatment chamber (12) and the second exhaust gas treatment chamber (13) under the action of the air pump (16), and the residual exhaust gas in all pipelines is cleaned by using the air pump (16); Step 6: After cleaning is completed, the exhaust gas is connected to other exhaust gas receiving pipes (15) through the direction control mechanism (5) and the pipe connection mechanism (3).

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