A waste gas treatment device for pinacol production

Abstract

This invention relates to the field of pinacolone production technology and discloses a waste gas treatment device for pinacolone production, including a base plate, a water absorption component, a thermal desorption component, an acid storage tank, and an alkaline washing tank. The water absorption component, thermal desorption component, acid storage tank, and alkaline washing tank are sequentially fixedly installed on the upper end of the base plate. An exhaust fan is fixedly connected to the upper side wall of the alkaline washing tank and is connected to the upper part of the interior of the alkaline washing tank. The exhaust fan is connected to a gas supply pipe. This invention, by setting up a first treatment component, adds a pluggable drying plate structure between the alkaline washing tank and the activated carbon treatment tank, avoiding the blockage of activated carbon by water vapor. Furthermore, the second treatment component performs deep adsorption on the dried exhaust gas, ensuring that the insoluble VOCs in the exhaust gas are fully intercepted. At the same time, the limiting component can automatically clamp and fix multiple activated carbon plates and simultaneously drive the wedge block to squeeze the flexible sealing plate to achieve gap sealing. The operation is efficient and the sealing is reliable.

Description

Technical Field

[0001] This invention relates to the field of pinacolone production technology, specifically to a waste gas treatment device for pinacolone production. Background Technology

[0002] Pinarone is an important chemical intermediate, mainly used in the production of triazole pesticides and various plant growth regulators. In the production process of pinarone, hydrochloric acid is used as a raw material. The tail gas in the reaction process usually contains hydrochloric acid mist, pinarone vapor and volatile organic compounds such as isopentenylene, so the tail gas needs to be treated.

[0003] A tail gas recovery device for the production process of pinacolone, with announcement number CN211025724U, includes a sealed box containing a dissolving tank and a heating tank. Beneficial effects: This invention utilizes a dissolving tank and a heating tank. Tail gas enters the dissolving tank through an inlet pipe. The dissolving tank contains water, where hydrochloric acid and pinacolone in the tail gas dissolve. This step recovers the hydrochloric acid and pinacolone from the tail gas. Subsequently, the hydrochloric acid and pinacolone aqueous solution is pumped to the heating tank. A heating rod heats the hydrochloric acid and pinacolone solution to 90°C, causing the hydrochloric acid to evaporate. After the hydrochloric acid evaporates, pinacolone remains in the aqueous solution, forming a pinacol aqueous solution. This solution is discharged through a drain pipe, completing the collection of pinacolone. The dissolving tank and heating tank effectively recover pinacolone from the tail gas, reducing waste and preventing air pollution caused by pinacolone emissions.

[0004] However, the aforementioned equipment lacks effective treatment methods for the water-insoluble volatile organic compounds commonly found in the exhaust gas from pinacol production. Isoprene has a low boiling point, is neither soluble in water nor reacts with alkali solutions, and therefore cannot be effectively captured in either the dissolving or heating tanks. Ultimately, it is emitted directly into the atmosphere without treatment, resulting in non-methane total hydrocarbon concentrations in the exhaust gas far exceeding environmental standards, causing serious air pollution problems. Therefore, we propose a waste gas treatment device for pinacol production. Summary of the Invention

[0005] The purpose of this invention is to provide a waste gas treatment device for the production of pinacolone, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a waste gas treatment device for pinacol production, comprising a substrate, a water absorption component, a thermal desorption component, an acid storage tank, and an alkaline washing tank, characterized in that: the water absorption component, the thermal desorption component, the acid storage tank, and the alkaline washing tank are sequentially fixedly installed on the upper end of the substrate; an exhaust fan is fixedly connected to the upper part of the side wall of the alkaline washing tank; the exhaust fan is connected to the upper part of the interior of the alkaline washing tank; the exhaust end of the exhaust fan is connected to a first gas supply pipe; a first treatment component and a second treatment component are installed on the upper end of the substrate; the first gas supply pipe is connected to the first treatment component; the first treatment component is located between the second treatment component and the alkaline washing tank; a second gas supply pipe is provided on one side of the first treatment component; the second gas supply pipe is connected to the second treatment component.

[0007] Preferably, the first processing component includes a drying chamber, which is fixedly connected to the upper end of the substrate. The outlet end of the first gas supply pipe is connected to the inside of the drying chamber. A plurality of insertion ports are provided on one inner wall of the drying chamber, and a drying plate is inserted into each of the plurality of insertion ports. The plurality of drying plates are slidably disposed inside the drying chamber. The second gas supply pipe is connected to the side of the drying chamber away from the alkaline washing chamber.

[0008] Preferably, the second processing component includes a processing box, which is fixedly connected to the upper end of the substrate. The outlet end of the second gas supply pipe is connected to the processing box. The side wall of the processing box has a plurality of arrayed insertion ports, each of which contains an activated carbon plate. The activated carbon plates slide within the processing box. An exhaust pipe is connected to the side of the processing box away from the alkaline washing box. A limiting component for fixing the activated carbon plates is installed inside the processing box.

[0009] Preferably, the limiting component includes a U-shaped cavity, which is opened inside the processing box. Two symmetrically arranged lifting plates are slidably connected to the inner wall of the U-shaped cavity. A bidirectional screw is rotatably connected to the inner wall of the U-shaped cavity. The two lifting plates are threaded onto the outside of the bidirectional screw. Each of the two lifting plates is provided with multiple clamping blocks. The multiple clamping blocks are arranged in pairs. The multiple sets of clamping blocks are matched with multiple activated carbon plates one by one. Limiting grooves are opened on both sides of the multiple activated carbon plates. Each set of clamping blocks is engaged with two limiting grooves.

[0010] Preferably, a motor is fixedly connected to the middle of one side of the processing box, a worm gear is fixedly sleeved on the outside of the bidirectional screw, a worm is rotatably connected to the inner wall of the U-shaped cavity, the worm and the worm gear mesh with each other, the output end of the motor rotates through the processing box, and the output end of the motor is fixedly connected to one end of the worm.

[0011] Preferably, the top and bottom inner walls of the treatment box are fixedly connected with multiple flexible sealing plates. The multiple flexible sealing plates are divided into upper and lower groups, and the number of flexible sealing plates in each group is the same as that of the activated carbon plates. Multiple wedge blocks are fixedly connected to both lifting plates. The multiple wedge blocks are divided into upper and lower groups, and the multiple wedge blocks correspond to multiple flexible sealing plates respectively. The multiple wedge blocks slide through the inner wall of the U-shaped cavity, and the multiple wedge blocks are slidably disposed in the treatment box. Each wedge block is located on the side of the corresponding flexible sealing plate away from the exhaust pipe.

[0012] Preferably, a protective cover is fixedly connected to one side of the processing box, the motor is located inside the protective cover, and multiple heat dissipation vents are provided on the side wall of the protective cover.

[0013] Preferably, each of the multiple drying plates has multiple bolts running through its sidewalls, and the multiple bolts are threaded to the sidewalls of the drying chamber. Each of the multiple drying plates has a sealing gasket layer.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up processing component one, a pluggable drying plate structure is added between the alkaline washing box and the activated carbon treatment box. The exhaust gas after alkaline washing first enters the drying box and comes into full contact with the multi-layer drying plates. The residual water vapor in the exhaust gas is adsorbed, which significantly reduces the relative humidity of the exhaust gas entering the subsequent treatment unit to the optimal working range of activated carbon. This not only effectively avoids the blockage of activated carbon by water vapor, but also greatly improves the adsorption efficiency and service life of activated carbon for insoluble VOCs in pinacol exhaust gas. At the same time, the drying plates adopt a drawer-type plug-in structure and are fixed laterally with bolts. Operators can easily pull out a single drying plate for replacement or regeneration without disassembling the whole machine, making maintenance convenient and operating costs low.

[0015] 2. By setting up the second treatment component, multi-layer pluggable activated carbon plates are used to deeply adsorb and purify the dried exhaust gas. Multiple activated carbon plates are arranged in an array along the airflow direction to form a multi-level adsorption barrier, ensuring that the insoluble VOCs in the exhaust gas are fully intercepted, and the treated gas can be discharged in compliance with standards.

[0016] 3. Multiple activated carbon plates can be automatically clamped and fixed simultaneously through the limiting component, making installation convenient and portable. During the clamping process, the lifting plate simultaneously drives the wedge block to squeeze the flexible sealing plate, causing it to elastically deform and tightly adhere to the surface of the activated carbon plate. This achieves the sealing of the gap between the slidable contact surface of the activated carbon plate and the treatment box, preventing untreated waste gas from bypassing through the gap. This enables the rapid fixing of multiple activated carbon plates, resulting in high operating efficiency, strong sealing reliability, and suitability for continuous industrial scenarios in pinacol production. Attached Figure Description

[0017] Figure 1This is a schematic diagram of a waste gas treatment device for the production of pinacolone. Figure 2 This is a schematic diagram of the main structure of the present invention from another perspective; Figure 3 This is a cross-sectional view of the main structure of the present invention; Figure 4 This is a schematic diagram of the structure of the processing component one of the present invention; Figure 5 This is a schematic diagram of the structure of the second processing component of the present invention; Figure 6 This is a schematic diagram of the structure of the clamping block of the present invention; Figure 7 This is a schematic diagram of the structure of the wedge block of the present invention.

[0018] In the diagram: 1. Substrate; 2. Water absorption assembly; 3. Thermal desorption assembly; 4. Acid storage tank; 5. Alkali washing tank; 6. Vacuum pump; 7. Gas supply pipe one; 8. Processing assembly one; 801. Drying oven; 802. Insertion port one; 803. Drying plate; 9. Processing assembly two; 901. Processing box; 902. Insertion port two; 903. Activated carbon plate; 904. Exhaust pipe; 905. U-shaped cavity; 906. Lifting plate; 907. Bidirectional screw; 908. Clamping block; 909. Limiting groove; 910. Motor; 911. Worm gear; 912. Worm; 913. Flexible sealing plate; 914. Wedge block; 10. Gas supply pipe two; 11. Protective cover; 12. Heat dissipation port; 13. Bolt. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-7 As shown, the present invention provides a technical solution: a waste gas treatment device for pinacol production, comprising a substrate 1, a water absorption component 2, a thermal desorption component 3, an acid storage tank 4, and an alkaline washing tank 5, characterized in that: the water absorption component 2, the thermal desorption component 3, the acid storage tank 4, and the alkaline washing tank 5 are sequentially fixedly installed on the upper end of the substrate 1; an exhaust fan 6 is fixedly connected to the upper part of the side wall of the alkaline washing tank 5; the exhaust fan 6 is connected to the upper part of the interior of the alkaline washing tank 5; the exhaust end of the exhaust fan 6 is connected to a gas supply pipe 7; a treatment component 8 and a treatment component 9 are installed on the upper end of the substrate 1; the gas supply pipe 7 is connected to the interior of the treatment component 8; the treatment component 8 is located between the treatment component 9 and the alkaline washing tank 5; a gas supply pipe 10 is provided on one side of the treatment component 8; the gas supply pipe 10 is connected to the interior of the treatment component 9.

[0021] Furthermore, substrate 1 provides a stable mounting base for each component, ensuring the compactness and stability of the overall structure. Water absorption component 2 utilizes water to dissolve hydrochloric acid and pinacolone in the exhaust gas, achieving preliminary recovery and reduction of soluble pollutants. Thermal desorption component 3 uses heating to evaporate and separate hydrochloric acid from the aqueous solution, thereby recovering high-purity pinacolone aqueous solution. Acid storage tank 4 is used to collect and store condensed hydrochloric acid, realizing the reuse of by-product acid. Alkali washing tank 5 further purifies the exhaust gas by neutralizing residual acidic gases with alkali solution. Exhaust fan 6 actively pumps the alkaline-washed exhaust gas to the downstream treatment unit, ensuring smooth airflow. Treatment component one 8 is used to remove residual water vapor in the exhaust gas to protect the subsequent activated carbon layer from moisture interference. Treatment component two 9 uses activated carbon to adsorb VOCs in the exhaust gas, ultimately achieving the purification and emission compliance of the waste gas.

[0022] It is worth noting that the water absorption assembly 2, thermal desorption assembly 3, acid storage tank 4, and alkaline washing tank 5 are all existing technologies. The water absorption assembly 2 mainly consists of a dissolving tank, a stirring rod, and a drive assembly. Production exhaust gas is passed into the water, and utilizing the fact that both pinacolone and hydrochloric acid are readily soluble in water, stirring accelerates gas-liquid contact, causing pollutants to transfer from the gas phase to the liquid phase, thereby achieving preliminary capture of soluble components. The thermal desorption assembly 3 mainly consists of a heating tank and a heating rod, heating the aqueous solution containing absorbed pollutants to 90 degrees Celsius. Utilizing the volatile nature of hydrochloric acid... The properties of hydrochloric acid cause it to separate and escape from the liquid phase in gaseous form, while pinacolone remains in the solution due to its higher boiling point, thus achieving the separation and recovery of the two. The acid storage tank 4 is connected to the condenser tube. Taking advantage of the low temperature environment of the dissolving tank, the volatilized hydrochloric acid gas condenses into liquid hydrochloric acid as it flows through the condenser tube and is collected and stored. The alkaline washing tank 5 contains a low-concentration alkaline solution. The residual tail gas after the above treatment is passed through the alkaline solution, and the acid-base neutralization reaction is used to remove the residual acidic harmful substances, so that the tail gas meets the preliminary purification standard. This will not be elaborated further here.

[0023] In the preferred embodiment of this technical solution, please refer to Figures 1-4 As shown, the processing component 8 includes a drying chamber 801, which is fixedly connected to the upper end of the substrate 1. The outlet end of the gas supply pipe 7 is connected to the interior of the drying chamber 801. Multiple insertion ports 802 are provided on one inner wall of the drying chamber 801. A drying plate 803 is inserted into each of the multiple insertion ports 802. The multiple drying plates 803 are slidably disposed in the drying chamber 801. The gas supply pipe 10 is connected to the side of the drying chamber 801 away from the alkaline washing box 5.

[0024] Furthermore, the drying chamber 801 provides a closed installation space for the drying plate 803, ensuring the sealing of the dehumidification process. The insertion port 802 provides an independent pull-out channel for the installation and replacement of the drying plate 803. The drying plate 803 is filled with desiccant, which physically adsorbs the moisture in the exhaust gas, effectively reducing the gas humidity and thus protecting the subsequent activated carbon layer. The gas transmission pipe 10 stably delivers the dried exhaust gas to the next processing unit, ensuring a smooth connection of the airflow path.

[0025] In the preferred embodiment of this technical solution, please refer to Figure 4 As shown, the second processing component 9 includes a processing box 901, which is fixedly connected to the upper end of the substrate 1. The outlet end of the second gas pipe 10 is connected to the processing box 901. The side wall of the processing box 901 has multiple insertion ports 902 arranged in an array. Activated carbon plates 903 are inserted into each of the multiple insertion ports 902. The multiple activated carbon plates 903 slide within the processing box 901. An exhaust pipe 904 is connected to the side of the processing box 901 away from the alkaline washing box 5. A limiting component for fixing the activated carbon plates 903 is installed inside the processing box 901.

[0026] Furthermore, the treatment box 901 provides a sealed adsorption space for the activated carbon plate 903, ensuring full contact between the waste gas and the adsorption material. The insertion port 902 provides an independent pull-out channel for the installation and replacement of the activated carbon plate 903, enabling quick loading and unloading of multiple plates. The activated carbon plate 903 utilizes its rich microporous structure to physically adsorb VOCs in the exhaust gas, effectively removing insoluble organic matter. The exhaust pipe 904 discharges the purified gas, achieving compliant emissions of the waste gas. The limiting component secures and locks the inserted activated carbon plate 903, preventing loosening and bypass leakage caused by airflow impact during operation.

[0027] In the preferred embodiment of this technical solution, please refer to Figures 4-7 As shown, the limiting component includes a U-shaped cavity 905, which is opened inside the processing box 901. Two symmetrically arranged lifting plates 906 are slidably connected to the inner wall of the U-shaped cavity 905. A bidirectional screw 907 is rotatably connected to the inner wall of the U-shaped cavity 905. The two lifting plates 906 are threaded onto the outside of the bidirectional screw 907. Each of the two lifting plates 906 is provided with multiple clamping blocks 908. The multiple clamping blocks 908 are arranged in pairs. The multiple sets of clamping blocks 908 are matched with multiple activated carbon plates 903 one by one. Limiting grooves 909 are opened on both sides of the multiple activated carbon plates 903. Each set of clamping blocks 908 is engaged with two limiting grooves 909. A motor 910 is fixedly connected to the middle of one side of the processing box 901. A worm gear 911 is fixedly sleeved on the outside of the bidirectional screw 907. A worm 912 is rotatably connected to the inner wall of the U-shaped cavity 905. The worm 912 and the worm gear 911 mesh with each other. The output end of the motor 910 rotates through the processing box 901, and the output end of the motor 910 is fixedly connected to one end of the worm 912.

[0028] Furthermore, the U-shaped cavity 905 provides installation space for the lifting plate 906 and the bidirectional screw 907, ensuring the integrity and stability of the limiting assembly. The lifting plate 906 slides up and down within the U-shaped cavity 905, driving the clamping block 908 to move synchronously, achieving simultaneous clamping and releasing of multiple activated carbon plates 903. The lifting plate 906 can be slidably connected to the inner wall of the U-shaped cavity 905 via a guide rail and slider, ensuring stable lifting and preventing skewing during lifting. When the bidirectional screw 907 rotates, it drives the two lifting plates 906 to move synchronously in opposite directions, ensuring the movement of the upper and lower clamping blocks 908. To ensure symmetry and consistency, the clamping block 908 is inserted into the limiting grooves 909 on both sides of the activated carbon plate 903, locking the activated carbon plate 903 firmly inside the processing box 901. This effectively prevents loosening and displacement caused by airflow impact. The limiting grooves 909 provide a snap-fit ​​position for the clamping block 908, ensuring the accuracy and reliability of clamping and positioning. The motor 910 provides rotational power, realizing the control of locking and unlocking of the limiting components. The worm gear 911 and worm 912 cooperate to transmit the power of the motor 910 to the bidirectional screw 907. At the same time, the self-locking characteristics of the worm gear 911 and worm 912 are used to keep the clamping state stable.

[0029] In the preferred embodiment of this technical solution, please refer to Figure 6 and Figure 7 As shown, multiple flexible sealing plates 913 are fixedly connected to the top and bottom inner walls of the treatment box 901. The multiple flexible sealing plates 913 are divided into upper and lower groups, and the number of flexible sealing plates 913 in each group is the same as that of the activated carbon plate 903. Multiple wedge blocks 914 are fixedly connected to the two lifting plates 906. The multiple wedge blocks 914 are divided into upper and lower groups, and the multiple wedge blocks 914 correspond to the multiple flexible sealing plates 913 respectively. The multiple wedge blocks 914 slide through the inner wall of the U-shaped cavity 905, and the multiple wedge blocks 914 are slidably arranged in the treatment box 901. Each wedge block 914 is located on the side of the corresponding flexible sealing plate 913 away from the exhaust pipe 904.

[0030] Furthermore, the flexible sealing plate 913 adheres to the surface of the activated carbon plate 903, sealing the gap between the insertion port 902 and the activated carbon plate 903, effectively preventing untreated waste gas from bypassing and leaking through the gap. The wedge block 914 moves synchronously with the lifting plate 906 and squeezes the flexible sealing plate 913. By utilizing the inclined plane, the vertical movement of the lifting plate 906 is converted into the lateral squeezing of the flexible sealing plate 913, realizing the linkage between the clamping action and the sealing action.

[0031] In the preferred embodiment of this technical solution, please refer to Figure 2 and Figure 5 As shown, a protective cover 11 is fixedly connected to one side of the processing box 901, the motor 910 is located inside the protective cover 11, and multiple heat dissipation vents 12 are opened on the side wall of the protective cover 11.

[0032] Furthermore, the protective cover 11 is located outside the motor 910, forming a physical isolation for the motor 910 and preventing damage to the motor 910 caused by external dust, moisture and accidental collisions. The heat dissipation vent 12 is opened on the side wall of the protective cover 11, so that the heat generated by the motor 910 during operation can be dissipated in time, avoiding excessive temperature inside the protective cover 11 that would cause the performance of the motor 910 to decline and burn out.

[0033] In the preferred embodiment of this technical solution, please refer to Figure 4 As shown, multiple bolts 13 penetrate the side walls of multiple drying plates 803, and the multiple bolts 13 are threaded to the side walls of the drying chamber 801. The side walls of multiple drying plates 803 are provided with sealing gaskets.

[0034] Furthermore, bolt 13 passes through the side wall of drying plate 803 and is threaded to the side wall of drying chamber 801, locking and fixing drying plate 803 inside drying chamber 801, preventing drying plate 803 from loosening and falling out due to airflow impact during operation. The sealing gasket adheres to the contact surface between drying plate 803 and insertion port 802, sealing the gap and effectively preventing unfiltered gas from bypassing and leaking from the edge of drying plate 803.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for pinacol production, comprising a substrate (1), a water absorption assembly (2), a thermal desorption assembly (3), an acid storage tank (4), and an alkaline washing tank (5), characterized in that: The water absorption assembly (2), the thermal desorption assembly (3), the acid storage tank (4), and the alkaline washing tank (5) are sequentially fixedly installed on the upper part of the substrate (1). An air pump (6) is fixedly connected to the upper side wall of the alkaline washing tank (5). The air pump (6) is connected to the upper part of the interior of the alkaline washing tank (5). The air outlet of the air pump (6) is connected to the first air supply pipe (7). The upper part of the substrate (1) is equipped with the first processing assembly (8) and the second processing assembly (9). The first air supply pipe (7) is connected to the first processing assembly (8). The first processing assembly (8) is located between the second processing assembly (9) and the alkaline washing tank (5). The second air supply pipe (10) is provided on one side of the first processing assembly (8). The second air supply pipe (10) is connected to the second processing assembly (9).

2. The waste gas treatment device for pinacol production according to claim 1, characterized in that: The first processing component (8) includes a drying chamber (801), which is fixedly connected to the upper end of the substrate (1). The outlet end of the first gas supply pipe (7) is connected to the inside of the drying chamber (801). A plurality of insertion ports (802) are provided on one side of the inner wall of the drying chamber (801). A drying plate (803) is inserted into each of the plurality of insertion ports (802). The plurality of drying plates (803) are slidably disposed in the drying chamber (801). The second gas supply pipe (10) is connected to the side of the drying chamber (801) away from the alkaline washing box (5).

3. The waste gas treatment device for pinacol production according to claim 1, characterized in that: The second processing component (9) includes a processing box (901), which is fixedly connected to the upper end of the substrate (1). The outlet end of the second gas supply pipe (10) is connected to the processing box (901). The side wall of the processing box (901) is provided with a plurality of arrayed insertion ports (902). Activated carbon plates (903) are inserted into each of the plurality of insertion ports (902). The plurality of activated carbon plates (903) slide in the processing box (901). An exhaust pipe (904) is connected to the side of the processing box (901) away from the alkaline washing box (5). A limiting component for fixing the activated carbon plates (903) is installed in the processing box (901).

4. The waste gas treatment device for pinacol production according to claim 3, characterized in that: The limiting component includes a U-shaped cavity (905) which is located inside the processing box (901). Two symmetrically arranged lifting plates (906) are slidably connected to the inner wall of the U-shaped cavity (905). A bidirectional screw (907) is rotatably connected to the inner wall of the U-shaped cavity (905). The two lifting plates (906) are threaded onto the outside of the bidirectional screw (907). Each of the two lifting plates (906) is provided with multiple clamping blocks (908). The multiple clamping blocks (908) are arranged in pairs. The multiple sets of clamping blocks (908) are matched with multiple activated carbon plates (903) one by one. Limiting grooves (909) are opened on both sides of the multiple activated carbon plates (903). Each set of clamping blocks (908) is engaged with two limiting grooves (909).

5. The waste gas treatment device for pinacol production according to claim 4, characterized in that: A motor (910) is fixedly connected to the middle of one side of the processing box (901). A worm gear (911) is fixedly sleeved on the outside of the bidirectional screw (907). A worm (912) is rotatably connected to the inner wall of the U-shaped cavity (905). The worm (912) and the worm gear (911) mesh with each other. The output end of the motor (910) rotates through the processing box (901), and the output end of the motor (910) is fixedly connected to one end of the worm (912).

6. The waste gas treatment device for pinacol production according to claim 4, characterized in that: The top and bottom inner walls of the processing box (901) are fixedly connected with multiple flexible sealing plates (913). The multiple flexible sealing plates (913) are divided into upper and lower groups. The number of flexible sealing plates (913) in each group is the same as that of the activated carbon plate (903). Multiple wedge blocks (914) are fixedly connected to the two lifting plates (906). The multiple wedge blocks (914) are divided into upper and lower groups. The multiple wedge blocks (914) correspond to the multiple flexible sealing plates (913) respectively. The multiple wedge blocks (914) slide through the inner wall of the U-shaped cavity (905). The multiple wedge blocks (914) are slidably arranged in the processing box (901). Each wedge block (914) is located on the side of the corresponding flexible sealing plate (913) away from the exhaust pipe (904).

7. The waste gas treatment device for pinacol production according to claim 5, characterized in that: A protective cover (11) is fixedly connected to one side of the processing box (901), and the motor (910) is located inside the protective cover (11). Multiple heat dissipation vents (12) are opened on the side wall of the protective cover (11).

8. A waste gas treatment device for pinacol production according to claim 2, characterized in that: Multiple bolts (13) are threaded through the sidewalls of the multiple drying plates (803), and the multiple bolts (13) are threaded to the sidewalls of the drying box (801). The sidewalls of the multiple drying plates (803) are provided with sealing gaskets.

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