A flue gas detection device for coal tar pitch production

Abstract

This utility model discloses a flue gas detection device for coal tar pitch production, including a smoke collection hood, a smoke collection pipe above the smoke collection hood, a detection port on the smoke collection pipe, the top of the detection port narrowing into an outlet, and a multi-lobed elastic sealing block fixed at the bottom of the outlet with sealing strips between the lobes, forming an inverted conical sealing surface when naturally closed; a hollow sample injection block is inserted into the outlet, a detection probe is installed inside the sample injection block, a sampling tube is connected to the detection probe, and one end of the sampling tube is connected to a flue gas analyzer. This utility model belongs to the field of flue gas detection technology for pitch production, specifically referring to a flue gas detection device for coal tar pitch production.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas detection technology in asphalt production, specifically referring to a flue gas detection device for coal tar asphalt production. Background Technology

[0002] Coal tar pitch, a core product of coal tar processing, plays a crucial role in many industrial sectors, serving as an important raw material for the production of plastics, synthetic fibers, dyes, rubber, pharmaceuticals, and high-temperature resistant materials. However, its production process inevitably generates large quantities of toxic and harmful gases. If these gases are emitted directly without effective treatment, they will pose a serious threat to the environment and human health. With increasingly stringent environmental standards, regular and precise monitoring of flue gas from coal tar pitch production has become essential to ensure the normal operation of purification equipment and achieve pollution-free emissions.

[0003] In previous technologies, such as the flue gas detection device for coal tar pitch production shown in the publicly authorized patent CN202220530815.0, the fixing frame is fixed by a fixing nut, and the detection probe is inserted into the detection port by rotating the threaded rod with a crank handle to detect the flue gas. However, in actual operation, the operator not only has to open the detection port in advance for each test, but also manually rotate the crank handle to allow the threaded rod to slowly insert the detection probe into the detection port. This process is time-consuming and laborious. After the test is completed, the crank handle must be rotated in the opposite direction to remove the probe. The operation process is cumbersome and complicated, which greatly affects the detection efficiency. Utility Model Content

[0004] In view of the above situation and to overcome the shortcomings of the existing technology, this utility model provides a flue gas detection device for coal tar pitch production, which effectively solves the problem of cumbersome operation.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: A flue gas detection device for coal tar pitch production includes a smoke collection hood, a smoke collection pipe is provided above the smoke collection hood, a detection port is opened on the smoke collection pipe, the top of the detection port is contracted into an outlet, and a multi-lobed elastic sealing block is fixed at the bottom of the outlet, with a sealing strip between the lobes, which closes in a natural state to form an inverted conical sealing surface.

[0006] A hollow sample inlet block is inserted into the gas outlet, a detection probe is installed inside the sample inlet block, a sampling tube is connected to the detection probe, and one end of the sampling tube is connected to a flue gas analyzer.

[0007] Preferably, the sample injection block has an open inverted cone shape at the bottom and a cylindrical structure at the top.

[0008] Preferably, both the elastic sealing block and the sealing strip are made of rubber material that is resistant to high temperature and chemical corrosion.

[0009] Preferably, the detection probe is a multi-component sensor that integrates benzo[a]pyrene, SO2, and H2S detection modules.

[0010] Preferably, the cylindrical structure of the injection block is interference-fitted with the inner wall of the outlet to form a secondary seal.

[0011] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure: During the detection process, the flue gas detection device of this application only requires inserting the sample block into the gas outlet. The sample block is deeply inserted into the detection port, eliminating the need for complex operations such as manually turning the crank, which greatly saves detection time and improves detection efficiency. After the detection is completed, the sample block can be directly removed, and the sealing block will automatically return to its original state to seal the detection port. The operation is simple and quick, ensuring that harmful gases will not escape during or after the detection process, thus guaranteeing the accuracy of the detection results and effectively preventing environmental pollution. Attached Figure Description

[0012] Figure 1 This invention provides a schematic diagram of the overall structure of a flue gas detection device for coal tar pitch production. Figure 1 ;

[0013] Figure 2 This invention provides a schematic diagram of the overall structure of a flue gas detection device for coal tar pitch production. Figure 2 ;

[0014] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0015] Figure 4 This is a front view of a flue gas detection device for coal tar pitch production proposed in this utility model.

[0016] The components include: 1. Smoke hood, 2. Smoke collection pipe, 3. Detection port, 4. Gas outlet, 5. Elastic sealing block, 6. Sealing strip, 7. Sample inlet block, 8. Detection probe, 9. Sampling tube, and 10. Flue gas analyzer. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-4 As shown, the present invention proposes a flue gas detection device for coal tar pitch production, including a smoke collection hood 1, a smoke collection pipe 2 above the smoke collection hood 1, a detection port 3 on the smoke collection pipe 2, the top of the detection port 3 shrinks into an outlet 4, and a multi-lobed elastic sealing block 5 is fixed at the bottom of the outlet 4, with a sealing strip 6 between the lobes. In its natural state, it closes to form an inverted conical sealing surface. The elastic sealing block 5 and the sealing strip 6 are both made of high-temperature resistant and chemically corrosion resistant rubber material, which can flexibly deform and recover when the sample block 7 is inserted and removed, ensuring the sealing effect. Moreover, it can adapt to the high-temperature environment of the flue gas in the coal tar pitch production process and the various corrosive components contained in the flue gas, and is not easy to age or be damaged, thus extending the service life of the sealing block.

[0020] like Figure 1 , 3 As shown, a hollow sample inlet block 7 is inserted into the outlet 4, and a detection probe 8 is installed inside the sample inlet block 7. A sampling tube 9 is connected to the detection probe 8, and one end of the sampling tube 9 is connected to a flue gas analyzer 10. The detection probe 8 is a multi-component sensor that integrates benzo[a]pyrene, SO2, and H2S detection modules. The lower part of the sample inlet block 7 is an open inverted cone shape, and the upper part is a cylindrical structure, which can accurately and smoothly compress the elastic sealing block 5 set in petals, so that the sealing block opens automatically. The sample inlet block 7 can easily penetrate into the detection port 3. The cylindrical structure of the sample inlet block 7 is press-fitted with the inner wall of the outlet 4 to form a secondary seal.

[0021] In practical use, align the fume hood 1 with the flue gas emission port to ensure effective collection of flue gas. Hold the sample injection block 7 and align its inverted conical bottom with the gas outlet 4, then slowly insert it. As the sample injection block 7 is inserted, the elastic sealing block 5 will be squeezed and open, allowing the sample injection block 7 to smoothly enter the detection port 3. At this time, the cylindrical end of the sample injection block 7 is tightly fitted with the gas outlet 4, forming a seal. The detection probe 8 begins to detect the flue gas entering the sample injection block 7. The flue gas is transmitted to the flue gas analyzer 10 through the sampling tube 9. The operator can view the various detection data of the flue gas in real time, such as the concentration of harmful gases and the content of particulate matter, by observing the display screen of the flue gas analyzer 10.

[0022] After the test is completed, hold the cylindrical end of the sample injection block 7 and pull it out smoothly from the gas outlet 4. The sealing elastic block 5 will automatically return to its original shape under its own elasticity and reseal the test port 3 to prevent the leakage of harmful gases.

[0023] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A flue gas detection device for coal tar pitch production, comprising a smoke collection hood (1), wherein a smoke collection pipe (2) is provided above the smoke collection hood (1), characterized in that: The smoke collection pipe (2) is provided with a detection port (3), the top of the detection port (3) is contracted into an air outlet (4), and the bottom of the air outlet (4) is fixed with a multi-lobed elastic sealing block (5), with a sealing strip (6) between the lobes, which closes in a natural state to form an inverted conical sealing surface. A hollow sample inlet block (7) is inserted into the gas outlet (4). A detection probe (8) is installed inside the sample inlet block (7). A sampling tube (9) is connected to the detection probe (8). One end of the sampling tube (9) is connected to a flue gas analyzer (10).

2. The flue gas detection device for coal tar pitch production according to claim 1, characterized in that: The sample injection block (7) has an open inverted cone shape at the bottom and a cylindrical structure at the top.

3. The flue gas detection device for coal tar pitch production according to claim 2, characterized in that: Both the elastic sealing block (5) and the sealing strip (6) are made of rubber material that is resistant to high temperature and chemical corrosion.

4. The flue gas detection device for coal tar pitch production according to any one of claims 1-3, characterized in that: The detection probe (8) is a multi-component sensor that integrates benzo[a]pyrene, SO2, and H2S detection modules.

5. The flue gas detection device for coal tar pitch production according to claim 2, characterized in that: The cylindrical structure of the injection block (7) is press-fitted with the inner wall of the outlet (4) to form a secondary seal.

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