Post-treatment equipment for production of 2, 2-dimethylpiperidine-4-ketone

Abstract

The utility model discloses post-treatment equipment for 2, 2-dimethylpiperidine-4-ketone production, which belongs to the technical field of waste gas treatment and comprises a pretreatment unit, a microwave catalytic oxidation unit, an adsorption unit, a condensation unit and a discharge system. The pretreatment unit comprises multiple layers of filter screens; the microwave catalytic oxidation unit comprises a catalysis box, and a microwave generator is arranged in the catalysis box; the adsorption unit comprises an adsorption cavity, an air uniformizing plate is arranged above the adsorption cavity, and a plurality of layers of activated carbon adsorption beds are arranged below the air uniformizing plate; the condensing unit comprises a condenser and a heat removal fan; the exhaust system comprises an exhaust funnel, and the exhaust funnel is provided with a gas monitor and an exhaust valve. Particulate matters in waste gas are removed through the pretreatment unit, catalytic oxidation is performed through the microwave catalytic oxidation unit, harmful components are further removed through an activated carbon adsorption bed of the adsorption unit, the condensation unit is used for cooling the waste gas and promoting VOCs to be condensed into liquid, and finally the treated waste gas is discharged through the discharge system.

Description

TECHNICAL FIELD

[0001] The utility model belongs to waste gas treatment technical field, concretely relates to a 2, 2-dimethyl piperidine-4-ketone production aftertreatment equipment. BACKGROUND

[0002] In the production process of 2, 2-dimethyl piperidine-4-ketone, a certain amount of waste gas will be produced, and if these waste gases are directly discharged without treatment, it will pollute the environment. The traditional waste gas treatment equipment often has the problems of low treatment efficiency, high energy consumption and high operation cost. Therefore, it is of great practical significance to develop a new type of waste gas treatment equipment to improve the treatment efficiency, reduce the energy consumption and operation cost, and reduce the environmental pollution. SUMMARY

[0003] To solve the above-mentioned problems, the utility model discloses a 2, 2-dimethyl piperidine-4-ketone production aftertreatment equipment, removes the particulate matter in waste gas through the pretreatment unit, then carries out catalytic oxidation through the microwave catalytic oxidation unit, further removes the harmful components through the activated carbon adsorption bed of the adsorption unit, the condensing unit is used for cooling waste gas, promotes VOCs to condense into liquid, and finally discharges the treated waste gas through the discharge system.

[0004] To achieve the above purpose, the specific technical scheme of the present application is as follows:

[0005] A 2, 2-dimethyl piperidine-4-ketone production aftertreatment equipment, including pretreatment unit, microwave catalytic oxidation unit, adsorption unit, condensing unit and discharge system, the pretreatment unit includes multilayer filter screen, the microwave catalytic oxidation unit includes catalytic tank, and the catalytic tank is equipped with microwave generator, the adsorption unit includes adsorption cavity, and the adsorption cavity is equipped with air distribution plate above, and the air distribution plate is equipped with multilayer activated carbon adsorption bed below, the condensing unit includes condenser, exhaust fan, the discharge system includes exhaust cylinder, and the exhaust cylinder is equipped with gas monitor and discharge valve.

[0006] Based on the above technical features, further, the air distribution plate is cut by laser and has a plurality of round holes, the round holes gradually expand from the center to the periphery, the air flow forced into the activated carbon adsorption tank is uniformly distributed to the periphery, and the absorption efficiency is improved.

[0007] Based on the above technical features, further, the activated carbon adsorption bed is supported by the net-shaped support frame, the support frame is symmetrically provided with vibration motor at both ends, and the bottom of the adsorption cavity is provided with cleaning port, and the vibration motor is used for periodically shaking off the accumulated ash on the surface of the adsorption bed, reducing the pressure difference of the adsorption bed, and maintaining the adsorption efficiency.

[0008] Based on the above technical features, preferably, the multi-layer filter screen adopts different pore size filter materials to realize the grading filtration of different particle size particulate matters.

[0009] Based on the above technical features, preferably, the catalytic box is externally provided with a heat preservation layer to prevent heat loss and improve catalytic efficiency.

[0010] Based on the above technical features, preferably, the inner wall of the catalytic box is provided with a reflective layer for enhancing the concentration of microwave energy and improving the catalytic oxidation efficiency.

[0011] Based on the above technical features, preferably, a pressure regulating valve is arranged between the adsorption cavity of the adsorption unit and the catalytic box for accurately controlling the gas pressure entering the adsorption unit and ensuring the stability and efficiency of the adsorption process.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] The application realizes the double treatment of waste gas treatment by integrating the microwave catalytic oxidation unit and the adsorption unit, the microwave catalytic oxidation unit uses the high-frequency electromagnetic wave generated by the microwave generator to excite the catalyst and accelerate the oxidation reaction of VOCs, which significantly improves the oxidation efficiency, and at the same time, the multi-layer activated carbon adsorption bed in the adsorption unit can effectively capture the remaining pollutants after catalytic oxidation, thereby significantly improving the overall treatment efficiency.

[0014] Through the vibration of the support frame by the vibration motor, the dust of the activated carbon adsorption bed falls through the net support frame and is discharged from the cleaning port, which reduces the pressure difference of the adsorption bed and maintains the adsorption efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the 2,2-dimethylpiperidine-4-ketone production post-treatment equipment.

[0016] Figure 2 It is a structural schematic view of the air distribution plate.

[0017] LIST OF FIGURES

[0018] 1, pretreatment unit; 2, microwave catalytic oxidation unit; 3, adsorption unit; 4, condensation unit; 5, exhaust system; 6, pressure regulating valve; 7, filter screen; 8, catalytic box; 9, microwave generator; 10, reflective layer; 11, adsorption cavity; 12, air distribution plate; 1201, round hole; 13, activated carbon adsorption bed; 14, support frame; 15, vibration motor; 16, cleaning port; 17, condenser; 18, exhaust fan; 19, exhaust cylinder. DETAILED DESCRIPTION

[0019] The present application will be further clarified by a consideration of the following detailed description and drawings.

[0020] It should be noted that the words "upper", "lower", "left", "right", "front", and "back" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component. In addition, the terms "mount", "connect", and "connect" should be interpreted broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] As shown in Figure 1 An embodiment of a 2,2-dimethylpiperidin-4-one production post-processing device, comprising a pretreatment unit 1, a microwave catalytic oxidation unit 2, an adsorption unit 3, a condensation unit 4 and a discharge system 5.

[0022] The pretreatment unit 1 comprises a multi-layer filter screen 7; preferably, the multi-layer filter screen 7 uses filter materials with different pore sizes to achieve fractional filtration of particles with different particle sizes.

[0023] The microwave catalytic oxidation unit 2 comprises a catalytic tank 8, which is provided with a microwave generator 9; the adsorption unit 3 comprises an adsorption cavity 11, which is provided with an air distribution plate 12 above, and a multi-layer activated carbon adsorption bed 13 below. Preferably, as shown in Figure 2 The air distribution plate 12 is laser-cut with a plurality of circular holes 1201, which gradually expand from the center to the periphery, forcing the air flow into the activated carbon adsorption tank to be evenly distributed in all directions, thereby improving the absorption efficiency.

[0024] The pressure regulating valve 6 is provided between the adsorption cavity 11 and the catalytic tank 8 of the adsorption unit, which is used to accurately control the gas pressure entering the adsorption unit, to ensure the stability and efficiency of the adsorption process.

[0025] The condensation unit 4 comprises a condenser 17 and an exhaust fan 18; the discharge system 5 comprises an exhaust cylinder 19, which is equipped with a gas monitor and an exhaust valve. Once the detection exceeds the standard, the system will automatically alarm and take emergency measures, such as closing the exhaust valve, thereby avoiding environmental pollution and potential safety accidents, and ensuring the safety of the operating personnel and the surrounding environment.

[0026] The activated carbon adsorption bed 13 is supported by a net-shaped support frame 14, the support frame 14 is symmetrically provided with a vibration motor 15 at both ends, and the adsorption cavity 11 is provided with a cleaning port 16 at the bottom; the vibration motor 15 is used for periodically shaking off the accumulated dust on the surface of the adsorption bed, reducing the pressure difference of the adsorption bed, and the accumulated dust is cleaned and discharged from the cleaning port 16, so as to maintain the adsorption efficiency.

[0027] The adsorption cavity 11 and the catalytic tank 8 of the adsorption unit are provided with a pressure regulating valve 6, which is used for accurately controlling the gas pressure entering the adsorption unit, and ensuring the stability and efficiency of the adsorption process.

[0028] The catalytic tank 8 is externally provided with a heat preservation layer to prevent heat loss and improve catalytic efficiency.

[0029] The inner wall of the catalytic tank 8 is provided with a reflective layer, which is used for enhancing the concentration of microwave energy and improving the catalytic oxidation efficiency.

[0030] In summary, the present application has a simple structure, which removes particulate matter in the exhaust gas through the pretreatment unit, then catalytically oxidizes through the microwave catalytic oxidation unit, and further removes harmful components through the activated carbon adsorption bed of the adsorption unit. The condensing unit is used for cooling the exhaust gas to promote the condensation of VOCs into liquid, and finally the treated exhaust gas is discharged through the exhaust system. In the whole process, the design of the uniform air distribution plate and the vibration motor of the activated carbon adsorption bed ensures the full contact of the exhaust gas with the adsorption material, and improves the adsorption efficiency. The design of the pressure regulating valve and the heat preservation layer further improves the treatment efficiency and safety.

[0031] It should be noted that the drawings only illustrate the technical idea of the present application, and cannot limit the protection scope of the present application. For ordinary skilled persons in the technical field, a number of improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements fall within the protection scope of the claims of the present application.

Claims

1. A 2,2-dimethylpiperidin-4-one production post-treatment apparatus, characterized by: It comprises a pretreatment unit, a microwave catalytic oxidation unit, an adsorption unit, a condensation unit and an exhaust system; the pretreatment unit comprises a multilayer filter screen; the microwave catalytic oxidation unit comprises a catalytic box, which is provided with a microwave generator; the adsorption unit comprises an adsorption cavity, which is provided with an air equalizing plate above and a multilayer activated carbon adsorption bed below; the condensation unit comprises a condenser and an exhaust fan; the exhaust system comprises an exhaust cylinder, which is provided with a gas monitor and an exhaust valve.

2. A 2,2-dimethylpiperidin-4-one production post-treatment apparatus according to claim 1, characterized in that: The air equalizing plate is cut by laser and has a plurality of circular holes, which gradually expand from the center to the periphery.

3. A 2,2-dimethylpiperidin-4-one production post-treatment apparatus according to claim 1, characterized in that: The activated carbon adsorption bed is supported by a net-shaped support frame, the support frame is symmetrically provided with a vibration motor at both ends, and the adsorption cavity is provided with a cleaning port at the bottom.

4. A 2,2-dimethylpiperidin-4-one production post-treatment apparatus according to claim 1, characterized in that: The multilayer filter screen adopts filter materials with different pore sizes.

5. A 2,2-dimethylpiperidin-4-one production post-treatment apparatus according to claim 1, characterized in that: The catalytic box is externally provided with a heat preservation layer.

6. A 2,2-dimethylpiperidin-4-one production post-treatment apparatus according to claim 1, characterized in that: The inner wall of the catalytic box is provided with a light reflecting layer.

7. A 2,2-dimethylpiperidin-4-one production post-treatment apparatus according to claim 1, characterized in that: The adsorption cavity and the catalytic box of the adsorption unit are provided with a pressure regulating valve.

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