High-efficiency catalytic oxidation equipment for durene

Abstract

The utility model discloses durene efficient catalytic oxidation equipment, which belongs to the field of chemical process and reaction engineering and comprises a reaction tank, a feed pipe is fixedly connected to the left side of the top surface of the reaction tank, a discharge pipe is fixedly connected to the middle of the bottom surface of the reaction tank, and opening and closing devices are arranged in the feed pipe and the discharge pipe. A gas conveying pipe is fixedly connected to the right side of the top surface of the reaction tank, a treatment tank is fixedly connected to the right end of the gas conveying pipe, and a purification device is arranged in the treatment tank. The opening and closing devices are arranged on the upper side and the lower side of the reaction tank, the treatment tank is arranged on the right side of the reaction tank, the purification device is arranged in the treatment tank, and feeding and discharging of the reaction tank are controlled through the opening and closing devices, so that manual operation is reduced, and health and safety of workers are guaranteed; and gas generated in the durene catalytic oxidation process is treated through the purification device, so that emission of harmful gas is reduced, and the environment and personnel safety are protected.

Description

Technical Field

[0001] This utility model belongs to the field of chemical process and reaction engineering technology, and specifically relates to a high-efficiency catalytic oxidation device for mesitylene. Background Technology

[0002] Mesitylene is an important aromatic compound, a white crystalline solid with stable chemical properties. However, it can be catalytically oxidized to pyromellitic dianhydride (PMDA), a core raw material for synthesizing high-temperature resistant, high-strength polyimides. The process of catalytic oxidation to PMDA is a critical link in the industrial chain. Traditional oxidation processes commonly employ fixed-bed reactors with vanadium-based catalysts, and are widely used in flexible circuit boards, aerospace thin films, and electronic packaging materials.

[0003] Methoxymethylbenzene is toxic, and long-term exposure may irritate the respiratory tract and skin. Therefore, manual operation should be avoided during the catalytic oxidation of methoxymethylbenzene, and the gas generated during the catalytic oxidation of methoxymethylbenzene must be treated to prevent residual methoxymethylbenzene in the gas from entering the atmosphere and affecting the environment and personnel safety. Utility Model Content

[0004] The technical problem to be solved by this utility model is that existing equipment is difficult to achieve the desired effect during the catalytic oxidation of mesitylene, which affects the health of operators and causes the gas generated during the catalytic oxidation of mesitylene to affect the environment and personnel safety.

[0005] The technical solution adopted to solve the above-mentioned technical problems is to provide a high-efficiency catalytic oxidation device for mesitylene.

[0006] Furthermore, the system includes a reaction vessel, to which a feed pipe is fixedly connected on the left side of the top surface and a discharge pipe is fixedly connected in the middle of the bottom surface. Both the feed pipe and the discharge pipe are equipped with opening and closing devices. A gas supply pipe is fixedly connected on the right side of the top surface of the reaction vessel, and a processing tank is fixedly connected to the right end of the gas supply pipe. The processing tank is equipped with a purification device inside.

[0007] Furthermore, both the feed pipe and the discharge pipe pass through the reaction tank, and the gas transmission pipe passes through the reaction tank and the processing tank. Both the reaction tank and the processing tank are fixedly connected to the outside of a support frame. A control panel is provided below the processing tank, and the control panel and the support frame are fixedly connected.

[0008] The above technical solution controls the feeding and discharging of the reaction tank through an opening and closing device, reducing manual operation and ensuring the health and safety of workers. The purification device treats the gas generated during the catalytic oxidation of mesitylene, reducing the emission of harmful gases and protecting the environment and personnel safety.

[0009] Furthermore, the opening and closing device includes a ring gear, a drive gear meshing with the outside of the ring gear, a motor fixedly connected to the center of the bottom surface of the drive gear, and the motor and the reaction vessel fixedly connected.

[0010] Furthermore, the ring gear is provided with several arc-shaped grooves in the circumferential direction, and each arc-shaped groove is slidably connected to a limiting post. The bottom of the limiting post is fixedly connected to a second fixing ring, and the second fixing ring is fixedly connected to the feed pipe or the discharge pipe.

[0011] Furthermore, the ring gear is rotatably connected to several connecting rods, and the other end of each connecting rod is rotatably connected to an opening and closing plate. The top of the opening and closing plate is rotatably connected to a fixing member, and the top of the fixing member is fixedly connected to a first fixing ring. The first fixing ring is fixedly connected to the feed pipe or the discharge pipe.

[0012] The above technical solution uses a motor to drive a drive gear to rotate, which in turn drives a ring gear to rotate. The ring gear has an arc groove and a limiting post in the circumferential direction of rotation to form a motion trajectory. When rotating, it drives a connecting rod to push the opening and closing plate to rotate. The rotation of the opening and closing plate completes the opening and closing of the opening and closing device, controlling the feeding and discharging of the reaction tank.

[0013] Furthermore, the purification device includes an atomizing nozzle, a plurality of support rods are fixedly connected to the outside of the atomizing nozzle, the support rods are fixedly connected to the treatment tank, a filter element is provided above the atomizing nozzle, an adsorption element is fixedly connected above the filter element, and both the filter element and the adsorption element are fixedly connected to the treatment tank.

[0014] Furthermore, an exhaust nozzle is fixedly connected to the top of the treatment tank, and a drain bend is fixedly connected to the bottom of the treatment tank. Both the exhaust nozzle and the drain bend penetrate the treatment tank. A water inlet pipe is fixedly connected to the right side of the treatment tank, and the water inlet pipe is fixedly connected to the atomizing nozzle.

[0015] The above technical solution involves spraying water from the inlet pipe through an atomizing nozzle to cool the gas. The water droplets adhere to and cause fixed particles in the gas to fall off. The fixed particles and water are then discharged through a drain bend. Due to the unique shape of the drain bend, water accumulates at the bottom, sealing the gas and preventing leakage. The cooled gas is then filtered again through a filter membrane inside the filter element, and further treated by activated carbon inside the adsorption element to adsorb volatile organic compounds. Finally, the treated gas is discharged through an exhaust nozzle.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention features opening and closing devices on the upper and lower sides of a reaction tank, and a processing tank on the right side of the reaction tank with a purification device inside. The opening and closing devices control the feeding and discharging of the reaction tank, reducing manual operation and ensuring the health and safety of workers. The purification device treats the gas generated during the catalytic oxidation of mesitylene, reducing harmful gas emissions and protecting the environment and personnel safety. Attached Figure Description

[0018] Figure 1 This is a first-view perspective three-dimensional structural diagram of the high-efficiency catalytic oxidation device for mesitylene of this utility model;

[0019] Figure 2 This is a second-view perspective three-dimensional structural diagram of the high-efficiency catalytic oxidation device for mesitylene of this utility model;

[0020] Figure 3 This is an exploded three-dimensional structural diagram of the opening and closing device of the high-efficiency catalytic oxidation equipment for mesitylene of this invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the ring gear part of the high-efficiency catalytic oxidation device for mesitylene of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the purification device of the high-efficiency catalytic oxidation equipment for mesitylene of this utility model.

[0023] Reference numerals: 1. Reaction vessel; 2. Processing vessel; 3. Support frame; 4. Feed pipe; 5. Discharge pipe; 6. Control panel; 7. Opening and closing device; 701. Ring gear; 702. First fixing ring; 703. Second fixing ring; 704. Limiting post; 705. Motor; 706. Drive gear; 707. Arc groove; 708. Connecting rod; 709. Fixing component; 710. Opening and closing plate; 8. Gas supply pipe; 9. Purification device; 901. Atomizing nozzle; 902. Support rod; 903. Filter element; 904. Adsorption element; 10. Exhaust nozzle; 11. Water inlet pipe; 12. Drainage bend. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] like Figures 1-5As shown, a high-efficiency catalytic oxidation device for mesitylene includes a reaction tank 1. A feed pipe 4 is fixedly connected to the left side of the top surface of the reaction tank 1, and a discharge pipe 5 is fixedly connected to the middle of the bottom surface of the reaction tank 1. Both the feed pipe 4 and the discharge pipe 5 are equipped with an opening and closing device 7. The opening and closing device 7 includes a ring gear 701. A drive gear 706 meshes with the outside of the ring gear 701. A motor 705 is fixedly connected to the middle of the bottom surface of the drive gear 706. The motor 705 is fixedly connected to the reaction tank 1. The ring gear 701 is provided with several arc-shaped grooves 707 in the circumferential direction. A limiting post 704 is slidably connected inside the arc-shaped grooves 707. The limiting post 704 is used to limit the rotation angle of the ring gear 701. A second fixing ring 703 is fixedly connected to the bottom of the limiting post 704. The second fixing ring 703 is fixedly connected to the feed pipe 4 or the discharge pipe 5.

[0026] The ring gear 701 is rotatably connected to several connecting rods 708. The other end of the connecting rod 708 is rotatably connected to an opening and closing plate 710. The opening and closing plate 710 rotates to open and close the opening and closing device 7, controlling the feeding and discharging of the reaction tank 1. The top of the opening and closing plate 710 is rotatably connected to a fixing member 709. The top of the fixing member 709 is fixedly connected to a first fixing ring 702. The first fixing ring 702 is fixedly connected to the feed pipe 4 or the discharge pipe 5. The right side of the top surface of the reaction tank 1 is fixedly connected to a gas supply pipe 8. The right end of the gas supply pipe 8 is fixedly connected to a processing tank 2. The processing tank 2 is equipped with a purification device 9 inside.

[0027] The purification device 9 includes an atomizing nozzle 901, which sprays water supplied by the inlet pipe 11 to cool the gas and cause fixed particles in the gas to fall off through water droplets. Several support rods 902 are fixedly connected to the outside of the atomizing nozzle 901, and the support rods 902 are fixedly connected to the treatment tank 2. A filter element 903 is provided above the atomizing nozzle 901, and a filter membrane is provided inside the filter element 903 to filter the gas. An adsorption element 904 is fixedly connected above the filter element 903, and activated carbon is provided inside the adsorption element 904 to adsorb volatile organic compounds. Both the filter element 903 and the adsorption element 904 are fixedly connected to the treatment tank 2. The feed pipe 4 and the discharge pipe 5 both pass through the reaction tank 1, and the gas delivery pipe 8 passes through the reaction tank 1 and the treatment tank 2. Support frames 3 are fixedly connected to the outside of both the reaction tank 1 and the treatment tank 2.

[0028] A control panel 6 is located at the bottom of the treatment tank 2. The control panel 6 and the support frame 3 are fixedly connected. An exhaust nozzle 10 is fixedly connected to the top of the treatment tank 2. A drain bend 12 is fixedly connected to the bottom of the treatment tank 2. The drain bend 12 uses its unique shape to allow water to accumulate at the bottom of the drain bend 12, blocking the gas and preventing it from leaking out, without affecting its drainage. Both the exhaust nozzle 10 and the drain bend 12 pass through the treatment tank 2. A water inlet pipe 11 is fixedly connected to the right side of the treatment tank 2. The water inlet pipe 11 and the atomizing nozzle 901 are fixedly connected.

[0029] The working principle of this embodiment is as follows: during use, mesitylene and oxidant are put into the reaction tank 1 through the feed pipe 4. The reaction tank 1 catalytically oxidizes mesitylene. The bottom center of the reaction tank 1 is provided with a discharge pipe 5. Both the feed pipe 4 and the discharge pipe 5 are provided with an opening and closing device 7. The opening and closing device 7 is driven by a motor 705 to drive a drive gear 706 to rotate. The drive gear 706 drives a ring gear 701 to rotate. The ring gear 701 forms a motion trajectory with the arc groove 707 and the limiting post 704 arranged in the circumferential direction of rotation. When rotating, it drives the connecting rod 708 to push the opening and closing plate 710 to rotate. The opening and closing of the opening and closing device 7 is completed by the rotation of the opening and closing plate 710, thus controlling the feeding and discharging of the reaction tank 1.

[0030] The gas generated during the reaction in reaction tank 1 enters the treatment tank pipe 2 through the gas supply pipe 8. Water supplied by the water inlet pipe 11 is sprayed out through the atomizing nozzle 901 to cool the gas. The water droplets adhere to the fixed particles in the gas and cause them to fall off. The fixed particles and water are discharged through the drain bend 12. Due to the unique shape of the drain bend 12, water accumulates at the bottom of the drain bend 12, blocking the gas and preventing it from leaking out, without affecting its drainage. The cooled gas is filtered again through the filter membrane set inside the filter element 903, and then the volatile organic compounds are adsorbed by the activated carbon set inside the adsorption element 904, further treating the gas. Finally, the treated gas is discharged through the exhaust nozzle 10.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A high-efficiency catalytic oxidation device for mesitylene, comprising a reaction vessel (1), characterized in that: A feed pipe (4) is fixedly connected to the left side of the top surface of the reaction tank (1), and a discharge pipe (5) is fixedly connected to the middle of the bottom surface of the reaction tank (1). Both the feed pipe (4) and the discharge pipe (5) are equipped with opening and closing devices (7). A gas supply pipe (8) is fixedly connected to the right side of the top surface of the reaction tank (1). A processing tank (2) is fixedly connected to the right end of the gas supply pipe (8). A purification device (9) is provided inside the processing tank (2).

2. The high-efficiency catalytic oxidation equipment for mesitylene according to claim 1, characterized in that, The feed pipe (4) and the discharge pipe (5) both pass through the reaction tank (1), the gas supply pipe (8) passes through the reaction tank (1) and the processing tank (2), and the reaction tank (1) and the processing tank (2) are both fixedly connected to the outside of the support frame (3). The processing tank (2) is provided with a control panel (6) below it, and the control panel (6) and the support frame (3) are fixedly connected.

3. The high-efficiency catalytic oxidation equipment for mesitylene according to claim 1, characterized in that, The opening and closing device (7) includes a ring gear (701), and a drive gear (706) meshes with the outside of the ring gear (701). A motor (705) is fixedly connected to the middle of the bottom surface of the drive gear (706), and the motor (705) is fixedly connected to the reaction vessel (1).

4. The high-efficiency catalytic oxidation equipment for mesitylene according to claim 3, characterized in that, The ring gear (701) is provided with several arc-shaped grooves (707) in the circumferential direction. Each arc-shaped groove (707) is slidably connected to a limiting post (704). The bottom of the limiting post (704) is fixedly connected to a second fixing ring (703). The second fixing ring (703) is fixedly connected to the feed pipe (4) or the discharge pipe (5).

5. The high-efficiency catalytic oxidation equipment for mesitylene according to claim 3, characterized in that, The ring gear (701) is rotatably connected to a plurality of connecting rods (708). The other end of the connecting rod (708) is rotatably connected to an opening and closing plate (710). The top of the opening and closing plate (710) is rotatably connected to a fixing member (709). The top of the fixing member (709) is fixedly connected to a first fixing ring (702). The first fixing ring (702) is fixedly connected to the feed pipe (4) or the discharge pipe (5).

6. The high-efficiency catalytic oxidation equipment for mesitylene according to claim 1, characterized in that, The purification device (9) includes an atomizing nozzle (901), and several support rods (902) are fixedly connected to the outside of the atomizing nozzle (901). The support rods (902) are fixedly connected to the treatment tank (2). A filter element (903) is provided above the atomizing nozzle (901). An adsorption element (904) is fixedly connected above the filter element (903). Both the filter element (903) and the adsorption element (904) are fixedly connected to the treatment tank (2).

7. The high-efficiency catalytic oxidation equipment for mesitylene according to claim 1, characterized in that, An exhaust nozzle (10) is fixedly connected to the top of the treatment tank (2), and a drain bend (12) is fixedly connected to the bottom of the treatment tank (2). Both the exhaust nozzle (10) and the drain bend (12) pass through the treatment tank (2). A water inlet pipe (11) is fixedly connected to the right side of the treatment tank (2), and the water inlet pipe (11) is fixedly connected to the atomizing nozzle (901).

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