Chemical tail gas treatment device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU JUHUI ENVIRONMENTAL PROTECTION MATERIALS CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-10
AI Technical Summary
Existing chemical waste gas treatment devices suffer from unreasonable pipeline design, are susceptible to high temperature and corrosion damage, and are ineffective at blocking large particulate impurities, resulting in low device stability and efficiency.
The pipeline is protected by ceramic lining plates and heat-conducting fins. The multi-stage treatment box structure is designed, including dust removal, desulfurization adsorption and spray washing, combined with a barrier filter to block large particulate impurities.
It effectively removes harmful substances from exhaust gas, protects pipelines, extends service life, reduces temperature, prevents blockage, and improves purification effect and device stability.
Smart Images
Figure CN224474810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of chemical waste gas treatment equipment, specifically to a device for treating chemical tail gas. Background Technology
[0002] Chemical production processes generate large quantities of complex, highly concentrated exhaust gases that are toxic and corrosive. If these exhaust gases are released directly without effective treatment, they pose a serious threat to the environment and human health. For example, chemical exhaust gases may contain various organic compounds such as benzene, toluene, and xylene, as well as inorganic gases such as hydrogen sulfide and ammonia.
[0003] Existing chemical waste gas treatment devices have several shortcomings. Some devices have inadequately designed waste gas delivery pipelines, which can be damaged by the high temperatures of the waste gas during transport, affecting their lifespan and increasing the difficulty and cost of subsequent treatment. Furthermore, the pipelines are susceptible to corrosion from the waste gas, leading to damage and impacting the stability and reliability of the treatment process. Additionally, some devices are ineffective at blocking large particulate impurities in the waste gas, which may enter subsequent treatment stages, causing blockages or damage, affecting the normal operation of the entire device, and reducing treatment efficiency and effectiveness. Therefore, developing a treatment device that can effectively treat chemical waste gas and solve these problems is of significant practical importance. Utility Model Content
[0004] The purpose of this utility model is to provide a technical solution for a chemical waste gas treatment device to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:
[0005] It includes an exhaust gas treatment box, the exhaust gas treatment box having an air inlet connected to a tail gas conveying pipeline; the exhaust gas treatment box includes a dust removal box, an air inlet fixed on the left side of the dust removal box, and a desulfurization adsorption box fixed on the right side of the dust removal box, a spray water washing box fixed on the right side of the desulfurization adsorption box, and an exhaust port provided at the top of the exhaust port.
[0006] The exhaust gas delivery pipeline includes a head section pipeline that connects to the air inlet and a tail section pipeline that connects to the exhaust gas source. Both the head section pipeline and the tail section pipeline are connected by a bend section pipeline, and the bend section pipelines are connected to each other by a middle section pipeline.
[0007] Both the head section and the tail section of the pipeline include a square tube, a ceramic inner liner plate fixedly connected to the inner wall of the square tube, and multiple heat-conducting fins fixed in a ring array on the surrounding side walls of the ceramic inner liner plate. The ends of the heat-conducting fins penetrate through the square tube to the outside.
[0008] The turning section pipeline includes a fan-shaped ceramic frame and a fan-shaped pipe fixed on the inner wall of the fan-shaped ceramic frame.
[0009] The middle section of the pipeline includes a rectangular hollow tube, a rectangular ceramic frame fixed to the inner wall of the rectangular hollow tube, and 3-4 filter screens fixed at equal intervals in the inner cavity of the rectangular ceramic frame.
[0010] As a preferred embodiment of this utility model: multiple strip holes are provided on the side walls of the square pipes in the head section and tail section, which are used to allow the section of heat-conducting fins away from the ceramic inner liner to extend for heat exchange, thereby reducing the temperature of the exhaust gas treated inside the exhaust gas treatment box.
[0011] As a preferred embodiment of this utility model, the inner cavity of each of the strip-shaped holes is filled with fluororubber strips for sealing.
[0012] As a preferred embodiment of this utility model: the ceramic inner lining plate forms a protective layer on the inner wall of the square tube within the inner cavity of the square tube, which is used to prevent the square tube from being corroded by exhaust gas.
[0013] As a preferred embodiment of this utility model: the end faces of the fan-shaped ceramic frame that are far apart from each other are fixedly connected to the end ports of the head section pipe and the tail section pipe that are close to each other by screws, and the end faces of the fan-shaped ceramic frame that are close to each other are fixedly connected to the beginning and end ports of the rectangular hollow tube by screws.
[0014] As a preferred embodiment of this utility model, the first and last ends of the fan-shaped pipe are respectively connected to the ceramic inner lining plate and the end of the rectangular ceramic frame.
[0015] As a preferred embodiment of this utility model: the side wall of the filter frame is fixedly connected to the inner side wall of the rectangular ceramic frame, which is used to block large particulate impurities present in the exhaust gas.
[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0017] In this technical solution for a chemical waste gas treatment device, the waste gas treatment box consists of a dust removal box, a desulfurization adsorption box, and a spray washing box, enabling multi-stage treatment of the waste gas and effectively removing harmful substances such as dust and sulfides. The waste gas delivery pipeline is rationally designed. The initial and final sections of the pipeline are protected by ceramic liners and heat-conducting fins, achieving both pipeline protection and heat exchange and cooling. The pipeline structure at bends facilitates changes in the direction of waste gas delivery. The filter screen in the middle section of the pipeline blocks large particulate impurities. Overall, multi-stage treatment improves the waste gas purification effect and reduces air pollution; the ceramic liner prevents pipeline corrosion and extends the device's service life; the heat-conducting fins reduce the waste gas temperature, facilitating subsequent treatment and reducing high-temperature damage to the device; and the filter screen blocks large particulate impurities, preventing blockage or damage in subsequent treatment stages and ensuring stable operation of the device. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0019] Figure 1 This is a schematic diagram of the overall structure of a chemical tail gas treatment equipment.
[0020] Figure 2 This is a schematic diagram of an exhaust gas treatment box;
[0021] Figure 3 This is a schematic diagram of the exhaust gas delivery pipeline;
[0022] Figure 4 This is a schematic diagram of the internal structure of the head and tail sections of the pipeline;
[0023] Figure 5 This is a schematic diagram of the internal structure of the middle section of the pipeline;
[0024] Figure 6 This is a schematic diagram of the internal structure of the pipeline in the bend section.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Exhaust gas treatment box; 11. Dust removal box; 12. Air inlet; 13. Desulfurization adsorption box; 14. Spray water washing box; 15. Discharge port; 2. Tail gas conveying pipeline; 21. Head section pipeline; 211. Square pipe; 212. Strip hole; 213. Heat-conducting fins; 214. Ceramic inner lining plate; 22. Tail section pipeline; 23. Turning section pipeline; 231. Fan-shaped pipe; 232. Fan-shaped ceramic frame; 24. Middle section pipeline; 241. Rectangular hollow pipe; 242. Rectangular ceramic frame; 243. Barrier filter screen. Detailed Implementation
[0027] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.
[0028] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.
[0029] Example 1: The chemical tail gas treatment device consists of a waste gas treatment box 1 and a tail gas conveying pipeline 2. The waste gas treatment box 1 includes a dust removal box 11, with a fixed air inlet 12 on its left side and a desulfurization adsorption box 13 connected to its right side. The desulfurization adsorption box 13 is then connected to a spray washing box 14 on its right side, and an exhaust port 15 is provided at the top of the spray washing box 14. In the tail gas conveying pipeline 2, the first section of the pipeline 21 is connected to the air inlet 12, and the last section of the pipeline 22 is connected to the tail gas source. The two are connected through a bend section of the pipeline 23 and a middle section of the pipeline 24. A ceramic liner plate 214 is fixed to the inner wall of the square tube 211 of the head section pipe 21 and the tail section pipe 22. Multiple heat-conducting fins 213 are fixed in a ring array around the four sides of the ceramic liner plate 214. The ends of the heat-conducting fins 213 penetrate the square tube 211 to the outside. Multiple strip-shaped holes 212 are opened around the four sides of the square tube 211 for the heat-conducting fins 213 to extend out. The inner cavity of the strip-shaped holes 212 is filled with fluororubber strips for sealing. A fan-shaped pipe 231 is fixed to the inner cavity of the fan-shaped ceramic frame 232 of the bend section pipe 23. The two ends of the fan-shaped ceramic frame 232 are fixedly connected to the head section pipe 21 and the rectangular hollow tube 241 respectively by screws. A rectangular ceramic frame 242 is fixed to the inner cavity of the rectangular hollow tube 241 of the middle section pipe 24. Three barrier filters 243 are fixed at equal intervals inside the rectangular ceramic frame 242. The sidewalls of the barrier filters 243 are fixedly connected to the inner sidewalls of the rectangular ceramic frame 242. The exhaust gas enters through the tail section pipe 22, passes through the turning section pipe 23 and the middle section pipe 24, and then enters the exhaust gas treatment box 1 through the head section pipe 21. After being treated by dust removal, desulfurization adsorption and spray washing, it is discharged from the discharge port 15.
[0030] Example 2: The chemical exhaust gas treatment device in this example is similar in structure to that in Example 1, but four filter screens 243 are fixed inside the rectangular ceramic frame 242 of the middle section pipe 24. The installation method of the exhaust gas conveying pipe 2 is the same as in Example 1. The ceramic inner lining plate 214 of the square pipe 211 of the head section pipe 21 and the tail section pipe 22 is fixed with heat-conducting fins 213, and the strip holes 212 on the side wall of the square pipe 211 are filled with fluororubber strips for sealing. The two ends of the fan-shaped ceramic frame 232 of the turning section pipe 23 are fixedly connected to the head section pipe 21 and the rectangular hollow pipe 241 by screws, and the first and last ends of the fan-shaped pipe 231 are respectively connected to the ceramic inner lining plate 214 and the end of the rectangular ceramic frame 242. During the exhaust gas treatment process, the exhaust gas enters through the tail section pipe 22, the turning section pipe 23 and the middle section pipe 24 guide the exhaust gas, and four filter screens 243 further filter large particulate impurities in the exhaust gas. Then the exhaust gas enters the exhaust gas treatment box 1 to complete the treatment and is discharged.
[0031] Example 3: The structure of the waste gas treatment box 1 and the waste gas conveying pipeline 2 of the chemical waste gas treatment device is basically the same as that of Examples 1 and 2. In the head section 21 and tail section 22 of the waste gas conveying pipeline 2, the ceramic inner lining plate 214 on the inner wall of the square tube 211 effectively protects the inner wall of the square tube 211 from the corrosion of the waste gas. The heat-conducting fins 213 extend through the strip holes 212 on the side wall of the square tube 211 for heat exchange, reducing the temperature of the waste gas. The fan-shaped ceramic frame 232 of the turning section 23 is tightly connected to the head section 21 and the rectangular hollow tube 241 by screws, and the fan-shaped pipe 231 ensures smooth waste gas conveying. Three blocking filters 243 are fixed inside the rectangular ceramic frame 242 of the middle section 24. The blocking filters 243 are fixedly connected to the rectangular ceramic frame 242 to effectively block large particulate impurities in the waste gas. In the chemical production process, the exhaust gas enters the waste gas treatment box 1 through the exhaust gas transmission pipeline 2, and is successively treated by dust removal, desulfurization adsorption and spray washing, and finally discharged from the emission outlet 15.
[0032] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: The exhaust gas generated during the chemical production process is output from the exhaust gas source and enters the tail section pipe 22 of the exhaust gas conveying pipeline 2. A ceramic liner plate 214 is fixed to the inner wall of the square pipe 211 in the tail section pipe 22, which prevents the exhaust gas from directly eroding the inner wall of the square pipe 211. Multiple heat-conducting fins 213, fixed in a ring array around the four sides of the ceramic liner plate 214, extend through strip-shaped holes 212 in the side wall of the square pipe 211 to the outside. Fluororubber strips filling the inner cavity of the strip-shaped holes 212 provide a sealing effect. During the exhaust gas conveying process in the tail section pipe 22, the heat-conducting fins 213 can exchange heat with the outside, reducing the exhaust gas temperature. Subsequently, the exhaust gas enters the turning section pipe. In section 23, the fan-shaped ceramic frame 232 of the turning section pipe 23 is fixedly connected at one end to the end of the tail section pipe 22 by screws. The fan-shaped pipe 231 fixed inside the fan-shaped ceramic frame 232 is connected at both ends to the ceramic inner liner plate 214 and the end of the rectangular ceramic frame 242 fixed inside the subsequent rectangular hollow pipe 241, so that the exhaust gas can pass smoothly through the turning section pipe 23 and enter the middle section pipe 24. Three blocking filters 243 are fixed at equal intervals inside the rectangular ceramic frame 242 of the middle section pipe 24. The side wall of the blocking filter 243 is fixedly connected to the inner side wall of the rectangular ceramic frame 242. When the exhaust gas passes through, the blocking filter 243 blocks large particulate impurities in the exhaust gas.
[0033] The exhaust gas then enters the head section pipe 21, which has a similar structure to the tail section pipe 22. It also protects the square pipe 211 and provides heat exchange. The head section pipe 21 connects to the air inlet 12 of the exhaust gas treatment box 1, through which the exhaust gas enters the exhaust gas treatment box 1. The exhaust gas first enters the dust removal box 11, where the dust removal box 11 performs preliminary removal of dust and other particulate matter in the exhaust gas. Then, the exhaust gas enters the desulfurization adsorption box 13, where the desulfurization adsorption box 13 adsorbs and treats harmful substances such as sulfides in the exhaust gas. Then, the exhaust gas enters the spray water washing box 14, where the spray water washing box 14 further cleans the exhaust gas with spray water to remove residual impurities and harmful substances. After a series of treatments, the exhaust gas finally reaches the discharge port 15 at the top of the spray water washing box 14 and is discharged into the atmosphere from the discharge port 15.
[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A chemical waste gas treatment device, comprising a waste gas treatment box (1), characterized in that: The exhaust gas treatment box (1) is connected to the exhaust gas conveying pipeline (2) at the air inlet port; The exhaust gas treatment box (1) includes a dust removal box (11), an air inlet (12) fixed on the left side of the dust removal box (11), and a desulfurization adsorption box (13) fixed on the right side of the dust removal box (11). A spray water washing box (14) is fixed on the right side of the desulfurization adsorption box (13), and an exhaust port (15) is provided on the top of the exhaust port (15). The exhaust gas delivery pipeline (2) includes a head section pipeline (21) that connects to the air inlet (12) and a tail section pipeline (22) that connects to the exhaust gas source. Both the head section pipeline (21) and the tail section pipeline (22) are connected by a bend section pipeline (23), and the bend section pipelines (23) are connected to each other by a middle section pipeline (24). Both the head section pipe (21) and the tail section pipe (22) include a square pipe (211), a ceramic inner liner plate (214) fixedly connected to the inner wall of the square pipe (211), and multiple heat-conducting fins (213) fixed in a ring array on the four sides of the ceramic inner liner plate (214). The ends of the heat-conducting fins (213) penetrate through the square pipe (211) to the outside. The turning section pipeline (23) includes a fan-shaped ceramic frame (232) and a fan-shaped pipe (231) fixed on the inner wall of the fan-shaped ceramic frame (232); The middle section pipeline (24) includes a rectangular hollow tube (241), a rectangular ceramic frame (242) fixed on the inner wall of the rectangular hollow tube (241), and 3-4 blocking filters (243) fixed at equal intervals in the inner cavity of the rectangular ceramic frame (242).
2. The chemical tail gas treatment device according to claim 1, characterized in that: The square tube (211) in the head section pipe (21) and tail section pipe (22) has multiple strip holes (212) on its four sides, which are used to allow the section of heat-conducting fins (213) away from the ceramic inner liner plate (214) to extend for heat exchange, thereby reducing the temperature of the exhaust gas treated inside the exhaust gas treatment box (1).
3. The chemical tail gas treatment device according to claim 2, characterized in that: The inner cavity of each of the strip-shaped holes (212) is filled with fluororubber strips for sealing.
4. The chemical waste gas treatment device according to claim 1, characterized in that: The ceramic liner plate (214) forms a protective layer on the inner wall of the square tube (211) in the inner cavity of the square tube (211) to prevent the square tube (211) from being corroded by exhaust gas.
5. The chemical tail gas treatment device according to claim 1, characterized in that: The fan-shaped ceramic frame (232) is fixedly connected to the ends of the head section pipe (21) and the tail section pipe (22) by screws at the ends of the fan-shaped ceramic frame (232) that are far apart from each other. The ends of the fan-shaped ceramic frame (232) that are close to each other are fixedly connected to the ends of the rectangular hollow tube (241) by screws at the ends of the fan-shaped ceramic frame (232).
6. The chemical waste gas treatment device according to claim 1, characterized in that: The first and last ends of the fan-shaped pipe (231) are respectively connected to the ends of the ceramic inner lining plate (214) and the rectangular ceramic frame (242).
7. The chemical tail gas treatment device according to claim 1, characterized in that: The sidewall of the filter screen (243) is fixedly connected to the inner sidewall of the rectangular ceramic frame (242) to block large particulate impurities in the exhaust gas.