A transport box for the treatment of exhaust gases from chemical substances

Abstract

The application relates to the technical field of chemical equipment, in particular to a transport box body for chemical material waste gas treatment, which comprises a box body internally provided with a partition plate and a gas suction mechanism connected with the box body. The partition plate divides the box body into a lower material conveying area and an upper gas treatment area, and can realize gas-solid separation of materials and waste gas. The gas suction mechanism sucks air from the box body to form negative pressure in the box body, thereby fundamentally eliminating the risk of waste gas leakage to the outside due to mechanical seal failure. Preferably, a flow guide grid is further arranged in the box body to stabilize airflow, and a temperature control jacket is further arranged in the box body to adjust material temperature. The application solves the safety hidden danger of existing closed conveyors that cannot eradicate leaked waste gas, and has the beneficial effects of high safety and function integration.

Description

Technical Field

[0001] This application relates to the field of chemical equipment technology, and in particular to a transport container for treating chemical waste gas. Background Technology

[0002] In the chemical and pharmaceutical industries, solid materials containing volatile toxic and harmful components are typically transferred using enclosed conveyors with mechanical seals relying on flanges and gaskets. However, the continuous vibrations generated during operation of these devices can cause flange bolts to loosen, reducing the clamping force on the gaskets and ultimately leading to seal failure and leaks. These leaks directly result in the release of toxic and harmful gases from the container, posing a serious threat to the health of personnel and environmental safety, and are difficult to detect in a timely manner. Current technologies typically involve continuously improving and optimizing sealing devices such as flanges and gaskets to strengthen the conveyor's seal, but this approach only prolongs the lifespan of the sealing devices and does not fundamentally solve the problem of toxic and harmful gas leaks.

[0003] Based on the above, the present invention proposes a transport container for treating chemical material waste gas, which can effectively solve the above problems. Utility Model Content

[0004] To address the fundamental safety problem of toxic and harmful gas leakage caused by the easy failure of mechanical seals in traditional enclosed conveyors in the prior art, this application proposes a transport container for the treatment of chemical material waste gas.

[0005] A transport container for treating chemical waste gas includes: The housing has an inlet end, an outlet end, and a partition inside the housing. The partition divides the interior of the housing into a lower material conveying area for accommodating conveyed materials and an upper gas treatment area located above the lower material conveying area. The partition has a through-hole structure that allows gas to penetrate from the lower material conveying area to the upper layer while blocking solid materials. A gas outlet is located above the upper gas treatment area.

[0006] The suction mechanism, which is connected to the gas outlet, is used to draw air from the inside of the box to create a negative pressure.

[0007] In one embodiment, the partition includes a plurality of louvered partitions, with adjacent louvered partitions spaced apart to form the through-hole structure. Each louvered partition includes a flat plate portion parallel to the bottom of the housing and an inclined portion connected to the flat plate portion. The acute angle of inclination formed by the inclined portion and the flat plate portion is between 30° and 60°. The inclined portion extends towards the lower material conveying area. The louvered partition is used to effectively intercept solid particles raised by the conveying mechanism while allowing gas to pass through, thereby achieving efficient gas-solid separation.

[0008] In one embodiment, the lower material conveying area is provided with a material conveying mechanism that pushes the material from the feed end to the discharge end and can discharge the waste gas in the material during the conveying process. The material conveying mechanism includes a conveying chain and a plurality of scrapers fixed to the conveying chain. The conveying chain is connected to the drive component of the overall conveyor. Each scraper is bent and the end of each scraper can be used to scrape up the material carried on the bottom plate of the box.

[0009] In one embodiment, a flexible spring sheet is provided on the outer edge of the scraper to thoroughly scrape the inner wall of the box and prevent material residue.

[0010] In one embodiment, a flow guide grid is provided below the gas outlet inside the upper gas processing zone. The flow guide grid is configured to homogenize the airflow before the gas passes through the gas outlet, so as to protect the downstream suction assembly and stabilize the suction rate.

[0011] In one embodiment, the flow guide grille has a honeycomb structure.

[0012] In one embodiment, the suction mechanism includes a suction assembly and a collection tube. The suction assembly is used to generate suction force, and the collection tube is connected to one end of the suction assembly to safely transport the extracted gas to a back-end processing unit.

[0013] In one embodiment, a temperature control jacket is also provided on the lower outer wall of the box to achieve heating, drying or cooling treatment of the internal materials. The temperature control jacket includes a first interface for introducing the temperature control medium and a second interface for discharging the temperature control medium.

[0014] In one embodiment, the air intake mechanism further includes a negative pressure control system, which includes a pressure sensor located in the upper gas treatment zone and a frequency converter connected to the motor of the air intake assembly. The two are electrically connected and are used to perform closed-loop stable control of the negative pressure inside the chamber to ensure that a safe negative pressure state is always maintained inside the chamber.

[0015] The transport container for treating chemical waste gas provided in this application can achieve the following technical effects: 1. By setting up an air intake mechanism to actively create negative pressure inside the chamber, the internal pressure of the chamber is always lower than the external environmental pressure. Even if the mechanical seal inside the chamber develops gaps due to equipment vibration or other reasons, it will only result in a slight intake of external air into the chamber, fundamentally eliminating the possibility of leakage of toxic and harmful gases from the inside.

[0016] 2. By setting up internal partitions and flow guide grilles, efficient gas-solid separation and homogenization of the exhaust airflow are achieved, which not only avoids material loss but also reduces the pressure of the suction components, improving the operational stability of the negative pressure control system and the equipment life.

[0017] 3. By setting up a temperature-controlled jacket, the temperature of the material can be regulated to achieve the drying process and prevent the material from caking during transportation, thus avoiding blockage of the lower material conveying area. Attached Figure Description

[0018] Figure 1 This is a structural cross-sectional view of a transport container for treating chemical material waste gas, provided in an embodiment of this application.

[0019] Figure 2 This is a partial sectional view of the structure of a transport container for treating chemical material waste gas, provided in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of a flow guide grille in a transport container for treating waste gas from chemical materials, provided in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of a partition in a transport container for treating waste gas from chemical materials, provided in an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of a scraper in a transport container for treating waste gas from chemical materials, provided in an embodiment of this application.

[0023] Figure 6 This is a schematic diagram of a transport container for treating chemical waste gas in an integrated transport machine, as provided in an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures: 1. Housing; 11. Feeding end; 12. Discharge end; 13. Partition; 130. Through-hole structure; 131. Louvered partition; 1311. Flat plate section; 1312. Inclined section; 14. Lower material conveying area; 141. Material conveying mechanism; 1410. Conveyor chain; 1411. Scraper; 1412. Flexible spring; 15. Upper gas treatment area; 16. Gas outlet; 17. Flow guide grille; 18. Temperature control jacket; 181. First Interface; 182, Second interface; 2, Suction mechanism; 21, Suction assembly; 22, Collection pipe; 23, Negative pressure control system; 231, Pressure sensor; 232, Frequency converter; 100, A conveyor for treating chemical material waste gas; 101, A conveyor box for treating chemical material waste gas; 102, Chemical material inlet; 103, Chemical material outlet; 104, Drive assembly; 105, Head box; 106, Tail box. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 This application provides a more detailed description of a transport container for treating chemical waste gas.

[0026] This application discloses a transport box for treating chemical material waste gas, which mainly includes a box 1 and an air suction mechanism 2 connected to the box 1.

[0027] In this embodiment, the housing 1 is provided with an inlet end 11 and an outlet end 12, forming a closed channel inside the housing 1. To adapt to the corrosiveness of different chemical materials, the inner wall material of the housing 1 can be stainless steel or have a corrosion-resistant coating such as polytetrafluoroethylene on its surface.

[0028] In this embodiment, the interior of the box 1 is divided into a lower material conveying area 14 for accommodating and conveying materials below the box 1 and an upper gas treatment area 15 above the lower material conveying area 14 by a horizontally arranged partition 13. In the length direction of the bottom of the lower material conveying area 14, the material is transported from the feed end 11 to the discharge end 12. The top of the upper gas treatment area 15 is provided with a gas outlet 16.

[0029] In this embodiment, the partition 13 inside the housing 1 includes a plurality of louvered partitions 131. Adjacent louvered partitions 131 are spaced apart to form a through-hole structure 130. The through-hole structure 130 allows gas to penetrate from the lower material conveying area 14 to the upper layer while blocking solid materials.

[0030] In this embodiment, the louvered partition 131 includes a flat plate 1311 parallel to the bottom of the housing 1 and an inclined portion 1312 connected to the flat plate. The acute angle of inclination formed by the inclined portion 1312 and the flat plate 1311 is between 30° and 60°. The inclined portion 1312 extends towards the lower material conveying area 14. When the material is pushed and transported, some of the raised material particles hit the back of the louvered partition 131 and fall down, while others fly onto the louvered partition 131 and slide down. This utilizes gravity and inertia to achieve gas-solid separation between the material and the exhaust gas. In another embodiment, when a higher level of separation of extremely fine dust is required, the partition 13 can also be a porous plate sintered from metal powder with a specific filtration precision. Those skilled in the art will understand that the choice of the inclination angle formed by the inclined portion 1312 and the flat plate 1311 is the result of seeking a balance between "gas permeability" and "solid obstruction". If the angle is too small (e.g., less than 30°), the airflow path will be blocked and the suction resistance will be too high; if the angle is too large (e.g., greater than 60°), the blocking effect on the lifted material will decrease, and material loss will be easily caused.

[0031] In this embodiment, a material conveying mechanism 141 is provided in the lower material conveying area 14 to push the material from the feed end 11 to the discharge end 12 and to discharge the waste gas in the material during conveying. The material conveying mechanism 141 can be a scraper conveying mechanism or a screw conveying mechanism. In this embodiment, a scraper conveying mechanism is used as an example. It includes a conveying chain 1410 and multiple scrapers 1411 fixed to the conveying chain 1410. The conveying chain 1410 is connected to the drive component of the overall conveyor. Each scraper 1411 is bent. The end of each scraper 1411 can be used to scrape the material carried on the bottom plate of the box 1, so as to realize the conveying of the material from the feed end 11 to the discharge end 12 and alleviate the material caking problem to a certain extent. A flexible spring sheet 1412 is also provided on the outer edge of the scraper 1411 to solve the problem of sticky materials sticking to the wall, effectively reducing the accumulation of material residue in the box 1. The flexible spring sheet 1412 can be made of wear-resistant polymer or corrosion-resistant spring alloy, and is connected to the scraper 1411 through an elongated hole and bolts. When the spring sheet wears, the bolts can be loosened and the spring sheet can be moved outward along the elongated hole to compensate for the wear, thereby extending its service life.

[0032] In this embodiment, a flow guide grid 17 is provided inside the upper gas treatment zone 15. The flow guide grid 17 is a honeycomb structure with multiple parallel channels. The chaotic airflow can become uniform and smooth after passing through the honeycomb structure. The flow guide grid 17 is used to homogenize the airflow before it passes through the gas outlet 16, eliminate eddies, protect the rear suction mechanism 2, and thus stabilize the suction rate.

[0033] In this embodiment, the suction mechanism 2 is connected to the gas outlet 16 located at the top of the upper gas treatment zone 15, and is used to draw air from the inside of the housing 1 to form a negative pressure. The suction mechanism 2 includes a suction component 21 and a collection pipe 22. The suction component 21 is used to generate suction force and can be selected in various ways depending on the nature of the waste gas and the process requirements. It can be a centrifugal fan, a jet pump, or a vacuum pump. The collection pipe 22 is connected to one end of the suction component 21 and is used to transport the extracted waste gas to the waste gas treatment unit at the rear end.

[0034] In this embodiment, a temperature control jacket 18 is also provided on the lower outer wall of the housing 1 to achieve heating, drying or cooling of the material inside the housing 1. The temperature control jacket 18 is provided with a first interface 181 for introducing a temperature control medium and a second interface 182 for discharging the temperature control medium. The interface can be a standard flange connection. In this embodiment, taking the drying of triethylamine hydrochloride material and promoting the volatilization of methyl tert-butyl ether contained in the material as an example, the temperature control medium of the first interface 181 can be the introduced water vapor, and the temperature control medium of the second interface 182 can be the discharged condensate. In another embodiment, the temperature control jacket 18 can also adopt a Miller plate structure with higher heat exchange efficiency.

[0035] In this embodiment, the suction mechanism 2 also includes a negative pressure control system 23. The negative pressure control system 23 includes a pressure sensor 231 disposed in the upper gas treatment zone 15 and a frequency converter 232 connected to the motor of the suction assembly 21. The two are electrically connected. When the pressure inside the chamber 1 changes, the pressure sensor 231 transmits a signal to the frequency converter 232. The frequency converter 232 controls the suction assembly 21 to make corresponding changes. Through closed-loop control, the negative pressure inside the chamber 1 is accurately stabilized at a preset value, ensuring that the chamber 1 always maintains a safe negative pressure state.

[0036] 2. In this embodiment, the transport box 101 for treating chemical waste gas provided in this application is an important component of a transport machine 100 for treating chemical waste gas. The transport machine 100 for treating chemical waste gas also includes a chemical material inlet 102, a chemical material outlet 103, a drive assembly 104, a head box 105, and a tail box 106. In the transport machine, there are multiple transport boxes 101 for treating chemical waste gas, which are connected in sequence. The drive assembly 104 is rotatably connected to the gear inside the head box 105. A conveyor chain 1410 is connected to the gear. The conveyor chain 1410 passes through multiple transport boxes 101 for treating chemical waste gas until it is connected to the rotating part inside the tail box 106, thereby realizing the closed loop of the conveyor chain 1410.

[0037] The working principle of the transport container for treating chemical waste gas provided in this application is as follows: Material enters the lower material conveying area 14 from the feed end 11, and the material conveying mechanism 141 pushes it towards the discharge end 12. During this process, the suction mechanism 2 is activated, and the negative pressure control system 23 starts working, forming and maintaining a stable negative pressure inside the housing 1. The waste gas generated by material volatilization is separated from the entrained solid particles when passing through the partition 13, and the pure gas enters the upper gas treatment area 15. Subsequently, after the gas is homogenized by the guide grille 17, it is extracted by the suction assembly 21 and sent to the rear end for processing through the collection pipe 22. The entire process is carried out in a full negative pressure environment. Even if there are gaps in the mechanical seal of the housing 1, it will only manifest as external air being drawn in, eliminating the risk of leakage of toxic and harmful gases from inside.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A transport container for treating chemical material waste gas, characterized in that, include: A housing (1) is provided with an inlet end (11), an outlet end (12), and a partition (13) located inside the housing (1). The partition (13) divides the interior of the housing (1) into a lower material conveying area (14) for accommodating conveyed materials and an upper gas treatment area (15) located above the lower material conveying area (14). The partition (13) is provided with a through-hole structure (130) that allows gas to penetrate from the lower material conveying area (14) to the upper layer while blocking solid materials. The housing is provided with a gas outlet (16) on one side of the upper gas treatment area (15). The suction mechanism (2) is connected to the gas outlet (16) and is used to draw air from the inside of the box (1) to form a negative pressure.

2. The transport container for treating chemical material waste gas according to claim 1, characterized in that, The partition (13) includes a plurality of louvered partitions (131), and adjacent louvered partitions (131) are spaced apart to form the through-hole structure (130).

3. A transport container for treating chemical material waste gas according to claim 2, characterized in that, The louvered partition (131) includes a flat plate (1311) parallel to the bottom of the box (1) and an inclined plate (1312) connected to the flat plate. The acute angle of inclination formed by the inclined plate (1312) and the flat plate (1311) is between 30° and 60°. The inclined plate (1312) extends toward the lower material conveying area (14).

4. A transport container for treating chemical waste gas according to claim 1, characterized in that, The lower material conveying area (14) is equipped with a material conveying mechanism (141) that pushes the material from the feed end (11) to the discharge end (12) and can discharge the waste gas in the material during the conveying process.

5. A transport container for treating chemical material waste gas according to claim 4, characterized in that, The material conveying mechanism (141) includes a conveying chain (1410) and a plurality of scrapers (1411) fixed to the conveying chain (1410). The conveying chain (1410) is connected to the drive component of the overall conveyor. Each scraper (1411) is bent and the end of each scraper (1411) can be used to scrape up the material carried on the bottom plate of the box (1).

6. A transport container for treating chemical material waste gas according to claim 5, characterized in that, The outer edges of the plurality of scrapers (1411) are provided with flexible springs (1412) for fitting against the inner wall of the box (1).

7. A transport container for treating chemical waste gas according to claim 1, characterized in that, Below the gas outlet (16) inside the upper gas processing zone (15), there is a flow guide grid (17). The flow guide grid (17) is configured to homogenize the gas flow before it passes through the gas outlet (16). The flow guide grid (17) has a honeycomb structure.

8. A transport container for treating chemical waste gas according to claim 1, characterized in that, The suction mechanism (2) includes a suction assembly (21) and a collection tube (22), wherein the collection tube (22) is connected to one end of the suction assembly (21) for transporting gas to the downstream processing.

9. A transport container for treating chemical waste gas according to claim 1, characterized in that, A temperature control jacket (18) is provided on the lower outer wall of the housing (1). The temperature control jacket (18) includes a first interface (181) for introducing the temperature control medium and a second interface (182) for discharging the temperature control medium.

10. A transport container for treating chemical material waste gas according to claim 8, characterized in that, The suction mechanism (2) also includes a negative pressure control system (23), which includes a pressure sensor (231) disposed in the upper gas processing zone (15) and a frequency converter (232) connected to the motor of the suction assembly (21). The pressure sensor (231) is electrically connected to the frequency converter (232) for controlling the negative pressure inside the housing (1).

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