Flue gas treatment device for camphor tree essential oil production

Abstract

The utility model discloses an oil camphor tree essential oil production flue gas treatment device which comprises a gas inlet pipe, a middle treatment device and a gas outlet pipe, and the gas inlet pipe and the gas outlet pipe are connected to the two sides of the middle treatment device respectively. The intermediate treatment device comprises a box body, a spraying piece, a pushing shaft and a cleaning blade; the box body is connected with an air inlet pipe and an air outlet pipe; the spraying piece comprises a plurality of spraying heads, and the spraying heads are arranged at the top in the box body; a sewage tank with a U-shaped structure is arranged at the bottom of the box body; a sewage outlet is formed in the middle of the bottom of the sewage tank; the pushing shaft is rotationally connected with the box body, one side of the pushing shaft is arranged in the sewage tank, the cleaning blades are of a spiral structure, the two cleaning blades are symmetrically arranged on the two sides of the pushing shaft, a pushing motor is arranged outside the box body, and the pushing motor is connected with the pushing shaft. Through the design, flue gas can be effectively purified, and pollution of a production site is reduced. Due to the design, pollution discharge of the box body is facilitated, blockage is prevented, and long-time stable operation of the intermediate treatment device is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of camphor tree essential oil production technology, specifically a device for treating flue gas from camphor tree essential oil production. Background Technology

[0002] Camphor tree (Cinnamomum camphora) is a precious tree species belonging to the genus Cinnamomum in the Lauraceae family. It is widely distributed in China, especially in Sichuan and other regions. The industry of distilling and extracting essential oil from camphor tree leaves holds an important position and has broad development prospects. Camphor tree branches and leaves have a high oil content, and its essential oil contains more than 130 components, including eucalyptol, linalool, and camphor. It is a rare raw material for the fragrance, pharmaceutical, food, defense, and light industries. In recent years, with the continuous development of related technologies, the extraction efficiency and quality of camphor tree essential oil have gradually improved, and the industry scale has also expanded. Many enterprises and research institutions are committed to the in-depth development and utilization of camphor tree essential oil, continuously expanding its application in various fields. However, there are still some problems to be solved in the production process of camphor tree essential oil, among which the problem of flue gas pollution is particularly prominent.

[0003] In the process of distilling camphor tree leaves to produce essential oils, some enterprises or small workshops typically use firewood or coal to provide the heat required for distillation. This traditional heating method generates a large amount of pollutants. Burning firewood or coal releases large amounts of acidic oxides such as sulfur dioxide and nitrogen dioxide. These substances dissolve in water to form acid rain, causing severe corrosion and damage to soil, water bodies, and buildings. Simultaneously, the combustion process also produces large amounts of carbon dioxide, exacerbating the greenhouse effect and contributing to global warming. Furthermore, the large amounts of sulfur dioxide and particulate matter produced by burning firewood or coal contribute to smog, severely impacting air quality, harming human health, and placing enormous pressure on the surrounding ecological environment. These pollution problems not only fail to meet environmental protection requirements but also hinder the sustainable development of the camphor tree essential oil industry. Therefore, effective flue gas treatment technologies are urgently needed to solve these problems.

[0004] A flue gas spray treatment device is disclosed in patent application number CN201822009941.8. This device has a liquid storage unit in the absorption device, which divides the inner cavity into a first flue gas treatment zone and a second flue gas treatment zone. The flue gas enters from the bottom of the absorption device and comes into countercurrent contact with the concentrated solution sprayed from the top of the absorption device. The concentrated solution in the second flue gas treatment zone absorbs the moisture in the flue gas and becomes thinner, releasing the latent heat released during the phase change of the moisture, heating the flue gas and the concentrated solution to 55℃-65℃. The heated concentrated solution is led out through the liquid storage unit into the first heat exchanger to exchange heat with the heat exchange medium (such as hot water). The heat exchange medium can be heated by 3-10℃. After the concentrated solution is cooled to approximately the same temperature as the solution inlet temperature at the top of the second flue gas treatment zone, it enters the first flue gas treatment zone to continue absorbing moisture in the flue gas. This is the first time that a stepped heat exchange has been used, which can effectively improve the quality of heat exchange and deeply recover and utilize the sensible heat of the original flue gas and the latent heat of the water vapor in the clean flue gas. This device can fully recover the heat energy in the flue gas. However, it has the problem of difficult sewage discharge. During use, the sludge formed by the flue gas can easily clog the purification device, making it unsuitable for working environments that require long-term production. Utility Model Content

[0005] The purpose of this utility model is to provide a device for treating flue gas from the production of camphor tree essential oil, so as to solve the following technical problems mentioned in the background art:

[0006] The existing process of distilling camphor tree leaves to produce essential oils generates a large amount of fumes, requiring a fume treatment device to reduce the pollution caused by the fumes.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A fume treatment device for camphor tree essential oil production includes an inlet pipe, an intermediate treatment device, and an outlet pipe. The inlet pipe and the outlet pipe are respectively connected to both sides of the intermediate treatment device. The intermediate treatment device includes a housing, a spray component, a drive shaft, and cleaning blades. The housing is connected to the inlet pipe and the outlet pipe. The spray component includes several spray heads, which are located at the top of the housing. A U-shaped wastewater tank is provided at the bottom of the housing, and a drain outlet is provided in the middle of the bottom of the wastewater tank. The drive shaft is rotatably connected to the housing, and one side of the drive shaft is located inside the wastewater tank. The cleaning blades are spiral in structure, and two cleaning blades are symmetrically arranged on both sides of the drive shaft. A drive motor is provided outside the housing and is connected to the drive shaft.

[0009] Furthermore, an intake valve is installed on the intake pipe.

[0010] Furthermore, an air outlet valve is installed on the air outlet pipe.

[0011] Furthermore, an air intake head is connected to the end of the air intake pipe away from the housing; a baffle is provided inside the air intake head on the side near the air intake pipe, the baffle is used to slow down the airflow speed.

[0012] Furthermore, the wind deflector is provided in two pieces, which are arranged symmetrically above and below each other.

[0013] Furthermore, an ash discharge port is provided on one side of the bottom of the air inlet head, and a gate is provided at the ash discharge port.

[0014] Furthermore, a filter plate is installed inside the air outlet pipe.

[0015] Furthermore, the enclosure is equipped with an inspection port, and a sealed door is hinged to the inspection port. A rubber sealing gasket is provided at the edge of the sealed door, and the sealed door is connected to the enclosure by a latch.

[0016] Furthermore, the outer surface of the drive shaft and the cleaning blades is provided with an anti-corrosion coating.

[0017] Furthermore, the gap between the outer edge of the cleaning blade and the drain trough is 2-5mm.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This design effectively purifies flue gas and reduces pollution at the production site. Several spray heads on the top of the chamber spray a fine water mist, dissolving or adsorbing dust and water-soluble harmful gases in the flue gas, effectively purifying it, reducing harmful emissions, and minimizing pollution at the production site. The U-shaped wastewater trough at the bottom of the chamber collects wastewater and sludge generated by the spraying, and the central drain outlet facilitates wastewater discharge, maintaining internal cleanliness. A drive shaft, driven by a motor outside the chamber, rotates, with symmetrically arranged spiral cleaning blades on both sides pushing sludge from the wastewater trough towards the center for discharge through the drain outlet. This facilitates wastewater removal and cleaning of the chamber, ensuring stable long-term operation of the intermediate treatment unit and improving production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 for Figure 2 A partial structural diagram;

[0023] Figure 4 This is a schematic diagram of the internal structure of the air intake head of this utility model.

[0024] The markings in the diagram are: 1-Inlet pipe, 2-Intermediate treatment device, 3-Outlet pipe, 4-Inlet head, 5-Inlet air valve, 6-Sewage tank, 7-Drain outlet, 8-Cleaning blade, 9-Drive shaft, 10-Drive motor, 11-Filter plate, 12-Outlet air valve, 13-Spray head, 14-Box body, 15-Ash outlet, 16-Baffle plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] A fume treatment device for camphor tree essential oil production includes an inlet pipe 1, an intermediate treatment device 2, and an outlet pipe 3. The inlet pipe 1 and the outlet pipe 3 are respectively connected to both sides of the intermediate treatment device 2. The intermediate treatment device 2 includes a housing 14, a spray component, a drive shaft 9, and cleaning blades 8. The housing 14 is connected to the inlet pipe 1 and the outlet pipe 3. The spray component includes several spray heads 13, which are located at the top inside the housing 14. A U-shaped wastewater tank 6 is provided at the bottom of the housing 14, and a drain outlet 7 is provided in the middle of the bottom of the wastewater tank 6. The drive shaft 9 is rotatably connected to the housing 14, and one side of the drive shaft 9 is located inside the wastewater tank 6. The cleaning blades 8 are spiral in structure, and two cleaning blades 8 are symmetrically arranged on both sides of the drive shaft 9. A drive motor 10 is provided outside the housing 14, and the drive motor 10 is connected to the drive shaft 9.

[0028] The intake pipe 1 is directly connected to the boiler's chimney and is used to receive the flue gas generated by fuel combustion. The intermediate treatment device 2 is used to treat the flue gas, and the exhaust pipe 3 is used to discharge the treated flue gas.

[0029] Specifically, during operation, the flue gas generated by fuel combustion enters the housing 14 through the inlet pipe 1. The spray nozzles 13 at the top of the housing 14 spray water mist, dissolving dust and water-soluble harmful gases in the flue gas in the water droplets or allowing them to be absorbed. This spraying process purifies the flue gas, and the resulting wastewater and sludge collect in the U-shaped wastewater tank 6. The drain port 7 at the bottom of the housing 14 is opened, allowing the wastewater to drain out. Subsequently, the drive motor 10 rotates the drive shaft 9, which in turn rotates the cleaning blades 8 on both sides. These blades push the sludge in the wastewater tank 6 towards the center, where it is discharged from the central drain port 7. The purified flue gas then exits through the outlet pipe 3. This design effectively purifies the flue gas and reduces pollution at the production site. Furthermore, this design facilitates the drainage and cleaning of the housing 14, ensuring the intermediate treatment unit 2 can operate for extended periods and effectively improving production efficiency.

[0030] In a preferred embodiment, an intake valve 5 is provided on the intake pipe 1. By providing the intake valve 5, the flow rate of flue gas entering the device can be adjusted according to production needs and the operating status of the flue gas treatment device, ensuring stable operation of the device. In addition, the intake valve 5 can quickly cut off or open the flue gas intake when the device starts or stops, facilitating operation and control.

[0031] In a preferred embodiment, an exhaust valve 12 is provided on the exhaust pipe 3. By providing the exhaust valve 12, the emission speed and flow rate of the treated flue gas can be adjusted as needed, making the emission process more stable and orderly. In addition, the exhaust valve 12 can flexibly control the flue gas emission situation when the device is started up, shut down, or its operating status is adjusted, which is beneficial for overall operation control.

[0032] In a preferred embodiment, an air inlet head 4 is connected to the end of the air inlet pipe 1 away from the housing 14; a baffle plate 16 is provided inside the air inlet head 4 near the side of the air inlet pipe 1, which is used to slow down the airflow speed. The design of the air inlet head 4 and the baffle plate 16 can, on the one hand, allow the incoming flue gas to be more evenly distributed into the air inlet pipe 1 after the airflow speed is slowed down, avoiding uneven subsequent processing caused by excessively fast local airflow. On the other hand, the slowed airflow can cause some large particulate impurities carried in the flue gas to settle at the air inlet head 4, thus playing a certain role in pre-purification.

[0033] In a preferred embodiment, two baffles 16 are provided, arranged symmetrically vertically. Compared to a single baffle 16, this more effectively reduces the airflow velocity, allowing the incoming flue gas to flow more smoothly and stably towards subsequent devices. Most importantly, the symmetrical layout increases the interception area, better blocking larger particulate impurities in the flue gas, making them more likely to settle at the air inlet 4, thus improving the pre-purification effect.

[0034] In a preferred embodiment, a dust discharge port 15 is provided on one side of the bottom of the air inlet head 4, and a gate is provided at the dust discharge port 15. The design of the dust discharge port 15 and the gate facilitates the collection and discharge of dust, impurities, etc., that settle inside the air inlet head 4 due to the deceleration caused by the baffle plate 16, keeping the inside of the air inlet head 4 relatively clean. The dust discharge port 15 can be opened or closed as needed through the gate, allowing for flexible operation according to the actual dust accumulation situation.

[0035] In a preferred embodiment, a filter plate 11 is provided inside the exhaust pipe 3. The filter plate 11 is installed in the middle part of the exhaust pipe 3, and is tightly fitted to the pipe wall of the exhaust pipe 3 without gaps, ensuring that the gas flowing through this part can fully contact the filter plate 11. The filter plate 11 is used to further finely filter the flue gas after it has been treated by the intermediate treatment device 2, intercepting any remaining small particulate impurities, incompletely removed harmful substances, etc., thereby improving the cleanliness of the exhaust gas.

[0036] In a preferred embodiment, the housing 14 is provided with an inspection port, and a sealed door is hinged to the inspection port. A rubber sealing gasket is provided at the edge of the sealed door, and the sealed door is connected to the housing 14 by a latch. The inspection port and the sealed door facilitate personnel to open the sealed door and enter the housing 14 to conduct regular inspections, repairs, and maintenance of various components such as the spray elements, push shaft 9, and cleaning blades 8, promptly identifying and resolving potential malfunctions to ensure the normal operation of the device. The rubber sealing gasket fills the gap between the sealed door and the housing 14, preventing flue gas leakage and avoiding impacts on treatment efficiency and environmental pollution. It also prevents external impurities from entering the housing 14 and adversely affecting the device. The latch connects the sealed door to the housing 14, ensuring a secure closure when closed, guaranteeing overall airtightness, and allowing for convenient and quick unlocking when needed.

[0037] In a preferred embodiment, the outer surfaces of the drive shaft 9 and the cleaning blades 8 are provided with an anti-corrosion coating. Since the drive shaft 9 and the cleaning blades 8 come into contact with wastewater containing various components and potentially corrosive substances during flue gas treatment, the anti-corrosion coating can isolate these corrosive substances from direct contact with the drive shaft 9 and the cleaning blades 8, preventing them from being corroded and extending their service life.

[0038] In a preferred embodiment, the gap between the outer edge of the cleaning blade 8 and the drain trough is 2-5 mm. In this embodiment, the gap can be 2 mm, 3.5 mm, or 5 mm. This gap range ensures that when the cleaning blade 8 rotates, it can fully contact the sludge in the drain trough, effectively pushing it towards the center for a good cleaning effect, without causing jamming due to an excessively small gap. A suitable gap prevents excessive friction and collision between the cleaning blade 8 and the inner wall of the drain trough, reducing wear on both and extending the service life of the cleaning blade 8 and the drain trough, ensuring long-term stable operation of the equipment. At the same time, the gap allows wastewater to flow smoothly around the edges during the sludge pushing process, preventing excessive tightness from hindering the normal collection of wastewater to the drain outlet 7 for discharge, thus maintaining a smooth drainage process.

[0039] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for treating flue gas from the production of camphor tree essential oil, characterized in that: It includes an air inlet pipe (1), an intermediate processing device (2), and an air outlet pipe (3), wherein the air inlet pipe (1) and the air outlet pipe (3) are respectively connected to both sides of the intermediate processing device (2); The intermediate processing device (2) includes a housing (14), a spray component, a push shaft (9), and cleaning blades (8); the housing (14) is connected to the air inlet pipe (1) and the air outlet pipe (3); The spray unit includes several spray heads (13), which are located at the top of the housing (14); a U-shaped sewage tank (6) is provided at the bottom of the housing (14), and a sewage outlet (7) is provided in the middle of the bottom of the sewage tank (6); a push shaft (9) is rotatably connected to the housing (14), one side of the push shaft (9) is located in the sewage tank (6), the cleaning blades (8) are spiral structures, and two cleaning blades (8) are symmetrically arranged on both sides of the push shaft (9); a push motor (10) is provided outside the housing (14), and the push motor (10) is connected to the push shaft (9).

2. The device for treating flue gas from camphor tree essential oil production according to claim 1, characterized in that: An air intake valve (5) is installed on the air intake pipe (1).

3. The device for treating flue gas from camphor tree essential oil production according to claim 1, characterized in that: An air outlet valve (12) is installed on the air outlet pipe (3).

4. The device for treating flue gas from camphor tree essential oil production according to claim 1, characterized in that: An air inlet head (4) is connected to one end of the air inlet pipe (1) away from the housing (14); a baffle plate (16) is provided inside the air inlet head (4) on the side near the air inlet pipe (1), and the baffle plate (16) is used to slow down the airflow speed.

5. The device for treating flue gas from camphor tree essential oil production according to claim 4, characterized in that: Two wind deflectors (16) are provided, and the two wind deflectors (16) are arranged symmetrically on the top and bottom.

6. The device for treating flue gas from camphor tree essential oil production according to claim 4, characterized in that: A ash discharge port (15) is provided on one side of the bottom of the air inlet head (4), and a gate is provided at the ash discharge port (15).

7. The device for treating flue gas from camphor tree essential oil production according to claim 1, characterized in that: A filter plate (11) is installed inside the air outlet pipe (3).

8. The fume treatment device for camphor tree essential oil production according to claim 1, characterized in that: The enclosure (14) is provided with an inspection port, and a sealing door is hinged to the inspection port. A rubber sealing gasket is provided at the edge of the sealing door, and the sealing door is connected to the enclosure (14) by a latch.

9. The fume treatment device for camphor tree essential oil production according to claim 1, characterized in that: The outer surfaces of the drive shaft (9) and the cleaning blades (8) are provided with an anti-corrosion coating.

10. The device for treating flue gas from camphor tree essential oil production according to claim 1, characterized in that: The gap between the outer edge of the cleaning blade (8) and the drain trough is 2-5mm.

Images