Zeolite adsorption / desorption integrated machine for exhaust gas treatment

Abstract

This application discloses an integrated zeolite adsorption and desorption machine for waste gas treatment, relating to the field of zeolite adsorption and desorption technology. It includes a zeolite rotor, a three-stage filter, an adsorption fan, a mixing tank, a catalytic furnace, and a first exhaust chimney integrated on a second vehicle body. A first vehicle body is located outside the second vehicle body, and a working platform is attached to the first vehicle body. The second vehicle body is equipped with a boom drive unit and a second boom. The end of the second boom is equipped with a gas collection hood connected to the treatment components, which covers the working platform. The technical advantages of this application are: efficient treatment of spray painting waste gas through the zeolite rotor, three-stage filter, and catalytic furnace, ensuring that spray painting emissions meet national and local environmental protection regulations; and effective reduction of equipment size by integrating the zeolite rotor, three-stage filter, adsorption fan, mixing tank, catalytic furnace, desorption fan, exhaust valve, and first exhaust chimney onto the second vehicle body through the adsorption and concentration combination of the zeolite rotor and three-stage filter.

Description

Technical Field

[0001] This application relates to the field of zeolite adsorption and desorption technology, and in particular to an integrated zeolite adsorption and desorption machine for waste gas treatment. Background Technology

[0002] During navigation and anchoring, ships are subjected to continuous corrosion from multiple factors. The high salt concentration in seawater causes electrochemical corrosion, constantly eroding the ship's metal structure, leading to decreased component strength and functional failure. Microbial attachment and reproduction in freshwater environments form biofilms, accelerating corrosion and aging of the hull surface. Simultaneously, temperature variations, pressure fluctuations, and impacts from waves and floating debris in different sea areas make the hull surface coating highly susceptible to damage, ultimately losing its protective capabilities. Furthermore, the ship's interior compartments, such as cargo holds and engine rooms, may come into contact with various cargoes, fuels, and chemicals, all of which can also damage the ship's structure. To address these issues, ship coatings create a multi-layered protective layer on the ship's surface. This coating not only effectively isolates corrosive media such as water, oxygen, and salt from the hull substrate, preventing corrosion reactions, but also resists external impacts and friction due to its excellent mechanical properties. Some functional coatings also provide anti-biofilm, chemical corrosion resistance, heat insulation, and flame retardancy, ensuring the ship's normal operation.

[0003] Traditional ship painting processes are mostly manual, and the paints used in traditional painting often contain high levels of volatile organic compounds (VOCs). During the painting process, a large amount of harmful substances are released, which not only endangers the health of operators but also pollutes the environment. In response to the above problems, how to automate the painting process and efficiently remove VOCs has become a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] This device provides an integrated zeolite adsorption and desorption unit for waste gas treatment, and the specific implementation method is as follows:

[0005] A zeolite adsorption-desorption integrated machine for waste gas treatment includes:

[0006] The processing components include a zeolite rotor, a three-stage filter, an adsorption fan, a mixing tank, a catalytic furnace, and a first exhaust chimney, all integrated on the second vehicle body.

[0007] The first vehicle body is located on the outside of the second vehicle body, and a working platform is connected to the first vehicle body via a first crane arm.

[0008] The crane drive unit and the second crane are located on the second vehicle body. The end of the second crane is equipped with a gas collection hood that is connected to the treatment component. The gas collection hood is located above the work platform and collects the volatile organic compounds generated by the spray gun at the work platform through the treatment component.

[0009] Based on the above technical solutions, the exhaust gas generated by the spray gun is treated by first adsorption and concentration and then further treatment. The overall process is "dry filtration + zeolite rotor adsorption and concentration + CO". Through the synergy of the zeolite rotor, the three-stage filter and the catalytic furnace, the spray exhaust gas is efficiently purified, minimizing the adverse impact of the exhaust gas on the surrounding environment. The boom drive unit includes a base and a hydraulic cylinder, and the base is circumferentially connected to the second vehicle body. The boom drive unit and the second boom adopt the boom structure of existing cranes.

[0010] Preferably, the air inlet of the three-stage filter is connected to the gas collection hood through a pipeline with an adsorption fan, and the air outlet of the three-stage filter is connected to the zeolite rotor and then connected to the first row of chimneys.

[0011] The mixing tank is located between the zeolite rotor and the catalytic furnace, and the three are connected by pipelines.

[0012] Based on the above technical solutions, since the exhaust gas contains solid particulate matter such as dust and paint mist, and the zeolite molecular sieve rotor has strict requirements on the content and particle size of the exhaust gas particulate matter, a three-stage filter needs to be set before the zeolite rotor. The removal rate of particulate matter ≥0.5um in the gas can reach more than 95%.

[0013] Preferably, the zeolite rotor includes a mounting frame and a wheel body rotatably mounted on the mounting frame. The wheel body is divided into an adsorption zone, a desorption zone, and a cooling regeneration zone by partitions along its circumference.

[0014] Preferably, the mounting frame is equipped with a drive motor, and the output of the drive motor is connected to the wheel via a belt.

[0015] Based on the above technical solution, the zeolite rotor and drive motor constitute the zeolite rotor concentration unit. After filtration and humidity adjustment, the exhaust gas enters the zeolite rotor for adsorption. The adsorption zone occupies 5 / 6 of the total area, where organic gases are adsorbed in the honeycomb zeolite, and clean gas is discharged. The desorption zone occupies 1 / 2 of the rotor area and is heated at high temperature to volatilize the VOCs in the gas. The cooling and regeneration zone occupies 1 / 2 of the rotor area, where the cooled outlet gas exchanges heat with the high-temperature flue gas to 200°C before entering the desorption zone to form desorbed gas, which then enters the CO catalytic oxidation for treatment.

[0016] Preferably, the adsorption fan is connected to the adsorption zone of the wheel body, the desorption zone of the wheel body is connected to the input end of the catalytic furnace via the desorption fan, and the output end of the catalytic furnace is connected to the desorption zone via the mixing tank.

[0017] Preferably, the adsorption fan is also connected to the cooling and regeneration zone of the wheel body, and the cooling and regeneration zone is connected to the input end of the mixing tank.

[0018] Based on the above technical solutions, the adsorption fan, mixing tank and catalytic furnace constitute the catalytic oxidation furnace unit; the gas desorbed is a high-concentration organic gas, which is thermally oxidized by CO to form carbon dioxide and water, and is discharged in compliance with standards. At the same time, the thermal oxidation releases a large amount of heat, which can not only meet the operating requirements of CO itself, but also provide desorption heat for the zeolite rotor.

[0019] Preferably, both the catalytic furnace and the adsorption zone are connected to the first row of chimneys, and the output end of the adsorption fan is also connected to the second row of chimneys.

[0020] Preferably, the three-stage filter includes a first housing and several filter screens disposed in the first housing.

[0021] Preferably, the desorption fan includes a second housing and a fan disposed within the second housing.

[0022] Preferably, it also includes a vent valve located on the pipeline inside the second vehicle body, the vent valve consisting of a valve and a valve body.

[0023] In summary, this application includes the following beneficial technical effects:

[0024] 1. This utility model uses a zeolite rotor, a three-stage filter and a catalytic furnace to efficiently treat the spraying exhaust gas, so that the spraying emissions meet the national and local environmental protection regulations and emission standards, while minimizing the pollution of the exhaust gas to the environment.

[0025] 2. This utility model has a simple structure. By combining the adsorption and concentration of the zeolite rotor and the three-stage filter, the zeolite rotor, the three-stage filter, the adsorption fan, the mixing tank, the catalytic furnace, the desorption fan, the exhaust valve and the first exhaust chimney are integrated on the second vehicle body, which effectively reduces the scale of the equipment.

[0026] 3. This utility model significantly reduces fuel consumption by using a zeolite rotor and a catalytic furnace in synergy and through a process path of "adsorption concentration followed by combustion treatment";

[0027] 4. This utility model achieves maximum heat recovery and utilization by utilizing the variable frequency air supply design of the desorption fan. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the application of this utility model;

[0029] Figure 2 This is a schematic diagram of the processing component in this utility model;

[0030] Figure 3 This is a plan view of the processing component in this utility model;

[0031] Figure 4 This is a schematic diagram of the desorption fan in this utility model;

[0032] Figure 5 This is a schematic diagram of the zeolite rotor in this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the vent valve in this utility model;

[0034] Figure 7 This is a schematic diagram of the three-stage filter in this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Zeolite rotor, 2. Three-stage filter, 3. Adsorption fan, 4. Mixing tank, 5. Catalytic furnace, 6. Desorption fan, 7. Exhaust valve, 8. First chimney, 9. Crane drive unit, 10. Second vehicle body, 11. Working platform, 12. First vehicle body, 13. First crane boom, 14. Second crane boom, 15. Second chimney, 16. Gas collection hood.

[0037] 101. Mounting frame; 102. Adsorption zone; 103. Desorption zone; 104. Cooling and regeneration zone.

[0038] 201. First chamber; 202. Filter screen;

[0039] 601. Second housing; 602. Fan;

[0040] 701. Valve; 702. Valve body. Detailed Implementation

[0041] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:

[0042] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0043] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0044] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0045] This application discloses an integrated zeolite adsorption and desorption machine for waste gas treatment.

[0046] Example 1

[0047] Reference Figures 1 to 7 This embodiment discloses an integrated zeolite adsorption and desorption machine for waste gas treatment, including...

[0048] The processing component includes a crane drive unit 9 and a second crane 14 mounted on the second vehicle body 10. The processing component includes a zeolite rotor 1, a three-stage filter 2, an adsorption fan 3, a mixing tank 4, a catalytic furnace 5, and a first exhaust chimney 8 integrated on the second vehicle body 10. A first vehicle body 12 is located on the outside of the second vehicle body 10, and a working platform 11 is connected to the first vehicle body 12 via a first crane 13. A gas collection hood 16 connected to the processing component is located at the end of the second crane 14. The gas collection hood 16 covers the working platform 11 and collects volatile organic compounds generated by spraying at the working platform 11 through the processing component. The desorption fan 6 includes a second housing 601 and a fan 602 located inside the second housing 601. In this structure, the processing component also includes a PLC controller and a human-machine interface mounted on the second vehicle body 10. The operating status is determined and corresponding actions are taken through various sensors installed at the equipment site. The PLC controller is electrically connected to the variable frequency drive motor of the zeolite rotor 1, the adsorption fan, and the desorption fan.

[0049] The inlet of the three-stage filter 2 is connected to the gas collection hood 16 through a pipeline with an adsorption fan 3. The outlet of the three-stage filter 2 is connected to the zeolite rotor 1 and then to the first chimney 8. The mixing tank 4 is located between the zeolite rotor 1 and the catalytic furnace 5, and the three are connected by pipelines.

[0050] The three-stage filter 2 includes a first housing 201 and several filter screens 202 disposed in the first housing 201. The three-stage filter 2 filters out paint residue and solid particles that may be present in the exhaust gas entering the treatment system from the workshop, in order to protect the zeolite rotor 1 and prevent the zeolite rotor 1 from clogging. The filter screens 202 are composed of three-stage filter modules G4, G5 and F9 connected in series, with filtration accuracy from low to high. Mechanical filtration is adopted. Each filter is equipped with a differential pressure sensor. In this structure, as the intercepted matter accumulates, the pressure difference before and after the filter increases. After reaching the set value, an alarm is triggered to remind the filter to be replaced.

[0051] Example 2

[0052] Reference Figures 1 to 7Based on the above embodiments, this embodiment also discloses a zeolite adsorption and desorption integrated machine for waste gas treatment. The zeolite rotor 1 includes a mounting frame 101 and a wheel body rotatably mounted on the mounting frame 101. The wheel body is divided into an adsorption zone 102, a desorption zone 103, and a cooling and regeneration zone 104 by partitions along its circumference. In this structure, a drive motor is provided on the mounting frame 101, and the output of the drive motor is connected to the wheel body via a belt. In this structure, the catalytic furnace 5 consists of a plate heat exchanger, an electric heater, and a catalytic bed. The heat exchanger is used to preheat the VOCs waste gas entering the catalytic furnace. The heat source comes from the outlet of the catalytic bed, and the temperature is about 600°C. The temperature of the VOCs waste gas preheated by the heat exchanger does not reach the temperature required for catalytic oxidation and is unstable. It is then heated by the electric heater to stabilize it at the reaction temperature of 300°C. The catalytic bed is filled with a ceramic carrier with a precious metal catalyst attached. When the gas flows through, the VOCs components therein will undergo an oxidation reaction on the surface of the catalyst, decomposing into CO2 and H2O and releasing heat.

[0053] Adsorption fan 3 is connected to the adsorption zone 102 of the wheel body. The desorption zone 103 of the wheel body is connected to the input end of the catalytic furnace 5 via desorption fan 6. The output end of the catalytic furnace 5 is connected to the desorption zone 103 via mixing tank 4. Adsorption fan 3 is also connected to the cooling and regeneration zone 104 of the wheel body, which is connected to the input end of the mixing tank 4. Both the catalytic furnace 5 and the adsorption zone 102 are connected to the first chimney 8, and the output end of adsorption fan 3 is also connected to the second chimney 15. In this structure, the wheel body is driven by a drive motor to rotate continuously, alternately entering the adsorption zone and the desorption zone. The desorption air volume is 1 / 20 of the adsorption air volume, which is equivalent to the waste gas being concentrated 20 times. When the waste gas concentration is 217.90 mg / m³, 3 After concentration, it reaches approximately 4.35 g / m³. 3 This allows the CO furnace at the back end to operate automatically.

[0054] Example 3

[0055] Reference Figures 1 to 7 Based on the above embodiments, this embodiment also discloses a zeolite adsorption and desorption integrated machine for waste gas treatment. The second vehicle body 10 integrates two boom drive units 9, two second booms 14 and two gas collection hoods 16. The two gas collection hoods 16 converge at the waste gas main pipe and are connected to the three-stage filter 2. An air vent valve 7 is provided on the pipeline inside the second vehicle body 10. The air vent valve 7 is composed of a valve 701 and a valve body 702.

[0056] The main exhaust pipe is equipped with a main air inlet valve, and the inlet pipe of the desorption fan 6 is also equipped with a preheating valve. The exhaust gas is connected to the downstream three-stage filter 2 through the main air inlet valve. In this structure, when the customer's coating line is not working, the main air inlet valve automatically closes to prevent gas from entering and contaminating the treatment equipment. When the exhaust gas treatment facility is in an emergency shutdown state, the main air inlet valve automatically closes, and the exhaust valve 7 at its front end for emergency use opens, so that the exhaust gas does not enter the treatment equipment. When the equipment starts up due to waste heat, the main air inlet valve closes, the preheating valve opens, and fresh ambient air is drawn in for preheating.

[0057] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.

Claims

1. A zeolite adsorption and desorption integrated machine for waste gas treatment, characterized in that, include: The processing components include a zeolite rotor (1), a tertiary filter (2), an adsorption fan (3), a mixing tank (4), a catalytic furnace (5), and a first chimney (8) integrated on the second vehicle body (10). The second vehicle body (10) is provided with a first vehicle body (12) on the outside, and a working platform (11) is connected to the first vehicle body (12) via a first boom (13); The second vehicle body (10) has a boom drive unit (9) and a second boom (14). The end of the second boom (14) is provided with a gas collection hood (16) that communicates with the processing component. The gas collection hood (16) is located above the work platform (11) and collects the volatile organic compounds generated by the spray gun at the work platform (11) through the processing component.

2. The zeolite adsorption and desorption integrated machine for waste gas treatment according to claim 1, characterized in that, The air inlet of the three-stage filter (2) is connected to the gas collection hood (16) through a pipeline with the adsorption fan (3), and the air outlet of the three-stage filter (2) is connected to the zeolite rotor (1) and then connected to the first chimney (8). The mixing tank (4) is located between the zeolite rotor (1) and the catalytic furnace (5), and the three are connected by pipelines.

3. The zeolite adsorption and desorption integrated machine for waste gas treatment according to claim 2, characterized in that, The zeolite rotor (1) includes a mounting frame (101) and a wheel body rotatably mounted on the mounting frame (101). The wheel body is divided into an adsorption zone (102), a desorption zone (103), and a cooling regeneration zone (104) by partitions along its circumference.

4. The zeolite adsorption and desorption integrated machine for waste gas treatment according to claim 3, characterized in that, The mounting frame (101) is equipped with a drive motor, and the output of the drive motor is connected to the wheel via a belt.

5. The zeolite adsorption and desorption integrated machine for waste gas treatment according to claim 3, characterized in that, The adsorption fan (3) is connected to the adsorption zone (102) of the wheel body, the desorption zone (103) of the wheel body is connected to the input end of the catalytic furnace (5) through the desorption fan (6), and the output end of the catalytic furnace (5) is connected to the desorption zone (103) through the mixing tank (4).

6. The zeolite adsorption and desorption integrated machine for waste gas treatment according to claim 5, characterized in that, The adsorption fan (3) is also connected to the cooling regeneration zone (104) of the wheel body, and the cooling regeneration zone (104) is connected to the input end of the mixing tank (4).

7. The zeolite adsorption and desorption integrated machine for waste gas treatment according to claim 6, characterized in that, The catalytic furnace (5) and the adsorption zone (102) are both connected to the first chimney (8), and the output end of the adsorption fan (3) is also connected to the second chimney (15).

8. The zeolite adsorption-desorption integrated machine for waste gas treatment according to claim 1, characterized in that, The three-stage filter (2) includes a first housing (201) and a plurality of filter screens (202) disposed in the first housing (201).

9. The zeolite adsorption and desorption integrated machine for waste gas treatment according to claim 5, characterized in that, The desorption fan (6) includes a second housing (601) and a fan (602) disposed in the second housing (601).

10. The zeolite adsorption-desorption integrated machine for waste gas treatment according to claim 1, characterized in that, It also includes an air vent valve (7) located on the pipeline inside the second vehicle body (10), the air vent valve (7) consisting of a valve (701) and a valve body (702).

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