Intelligent drainage and demisting integrated terminal for high-humidity exhaust gas

Abstract

This utility model discloses an intelligent integrated drainage-demisting terminal for high-humidity exhaust gas, comprising a drainage-demisting box, and an air inlet and an air outlet respectively disposed on opposite sides of the box; two sets of demisting box bodies are symmetrically arranged inside the drainage-demisting box, one set of demisting box bodies is connected to the air inlet, and the other set of demisting box bodies is connected to the air outlet; several sets of baffles are rotatably installed inside the demisting box bodies; an adjustment mechanism is provided on the outside of the demisting box bodies; the bottom ends of the two sets of demisting box bodies are connected by a semi-circular connecting pipe, and the bottom end of the connecting pipe is connected to a drainage mechanism. This utility model belongs to the field of exhaust gas treatment technology, specifically referring to an intelligent integrated drainage-demisting terminal for high-humidity exhaust gas.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, specifically referring to an intelligent integrated drainage and demisting terminal for high-humidity waste gas. Background Technology

[0002] In industrial sectors such as chemical engineering, metallurgy, and wet desulfurization, the treatment of high-humidity waste gas is a crucial step towards achieving environmental standards and process reuse. The liquid droplets carried in this type of waste gas not only corrode downstream equipment and affect the accuracy of measuring instruments, but may also cause pollutant escape. Currently widely used fixed demister devices (such as traditional baffle demisters and wire mesh demisters) face the following technical bottlenecks in actual operation: 1. The static structure is not compatible with the dynamic working conditions, and the disordered airflow organization results in low energy efficiency: The core components of traditional demisters, such as the baffles, are installed at a fixed angle, which can only achieve the best efficiency under specific flow rates and loads. Once the exhaust gas flow rate or droplet concentration fluctuates, problems such as uneven airflow distribution, local overload, or vortex dead zones are likely to occur. This not only creates an "ineffective demister zone" and reduces the effective treatment area, but also leads to a decrease in demister efficiency, an increase in system pressure drop and energy consumption, and makes it difficult to adapt to the dynamic working conditions.

[0003] 2. Low system intelligence and insufficient drainage reliability: Existing devices often lack real-time performance monitoring and feedback adjustment capabilities, and cannot adaptively optimize operating parameters based on inlet and outlet conditions. Furthermore, their drainage mechanisms often employ mechanical steam traps or manual control, which suffer from lag in response and poor sealing, easily leading to increased liquid accumulation inside the tank, increased system resistance, and even gas leakage. Utility Model Content

[0004] To address the aforementioned problems of low static demisting efficiency, poor airflow organization, and insufficient drainage reliability, this invention provides an intelligent integrated drainage and demisting terminal for high-humidity exhaust gas.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: an intelligent drainage-demisting integrated terminal for high humidity exhaust gas, including a drainage and demisting box, and an air inlet and an air outlet respectively passing through opposite sides of the box. The drainage and demisting box is symmetrically equipped with two sets of demisting box bodies, one set of the demisting box bodies is connected to the air inlet, and the other set of the demisting box bodies is connected to the air outlet. Several sets of baffles are rotatably installed inside the main body of the demister box; The main body of the demister box is equipped with an adjustment mechanism on its exterior. The bottom ends of the two sets of demister bodies are connected by a semi-circular connecting pipe, and a drainage mechanism is connected to the bottom end of the connecting pipe.

[0006] Furthermore, each of the baffles is distributed with gaps along the vertical axis and is evenly inclined on both sides of the inner wall of the demister body.

[0007] Furthermore, the adjustment mechanism includes support plates symmetrically fixed to the outer wall of the demister body, rotating rods rotatably installed between the support plates, a rotary motor set on one of the support plates, a worm gear fixed to the end of the rotating shaft that passes through the demister body and the baffle plate, and several sets of worms fixed on the rotating rod and meshing with the worm gears one by one. The output end of the rotary motor rotates through the support plate and connects to the rotating rod.

[0008] Furthermore, the drainage mechanism includes a conical water outlet cylinder with a valve at the bottom, a liquid level sensor disposed inside the conical water outlet cylinder, a water storage tank connected to the bottom of the conical water outlet cylinder, an inclined plate installed inside the water storage tank, and a drain pipe connected to the water storage tank and equipped with a valve. The top of the conical water outlet tube is connected to the bottom of the semi-circular connecting pipe; The bottom end of the conical water outlet cylinder is inserted into the bottom of the drainage and demisting box.

[0009] Furthermore, a coarse filter screen is installed at the air intake.

[0010] Furthermore, a first bent pipe connects the air inlet to the corresponding demister body; A first humidity sensor is installed inside the first bent tube.

[0011] Furthermore, a check valve is installed on the air outlet.

[0012] Furthermore, a second bent pipe is connected between the air outlet and the corresponding demister body; A second humidity sensor is installed inside the second bent tube.

[0013] Furthermore, several sets of support pillars are evenly arranged at the bottom of the drainage and demisting box.

[0014] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure: 1. A smart, adaptive two-stage cascaded demisting system is constructed through the coordinated arrangement of two sets of demister bodies, baffles, adjustment mechanisms, a first humidity sensor, and a second humidity sensor. The first and second baffles not only form airflow channels, but their preset bending angles also utilize the principle of inertial separation to pre-demist the inlet air and capture residual droplets in the outlet air, respectively. The first baffle guides the exhaust gas to a smooth direction, preventing direct impact on the demister body and ensuring a uniform flow field before the exhaust gas enters the first-stage demister body. This ensures even distribution of airflow within the baffle gaps, effectively eliminating ineffective demisting zones and droplet accumulation, thus reducing system energy consumption. Furthermore, the first and second humidity sensors monitor the exhaust gas humidity before and after the two-stage treatment in real time and feed the data back to the control system. Based on this, the control system drives the adjustment mechanism to synchronously adjust the angles of the baffles in the two demister bodies, precisely adapting them to the current exhaust gas flow rate and droplet load. This series design not only achieves sufficient collision and capture of droplets by extending the gas-liquid separation path, significantly improving the demisting efficiency, but also broadens the system's adjustment range and operational fault tolerance through the pretreatment and flow equalization of the airflow via the bent pipe. Thus, while ensuring stable outlet gas quality, it significantly enhances the equipment's adaptability to different operating conditions and load fluctuations.

[0015] 2. The drainage mechanism enables efficient, automatic, and reliable discharge of condensate. The linkage between the level sensor and valves ensures precise drainage timing, preventing water accumulation or gas leakage from the tank. The conical outlet facilitates water flow collection, while the water storage tank and inclined plate act as guides. This mechanism promptly discharges captured liquid, maintains stable system pressure, ensures continuous and automatic operation of the demisting process, and reduces manual intervention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an intelligent integrated drainage and demisting terminal for high-humidity exhaust gas proposed in this utility model. Figure 2 This is a partial structural schematic diagram of an intelligent integrated drainage and demisting terminal for high-humidity exhaust gas proposed in this utility model. Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 for Figure 2 Sectional view in; Figure 5 for Figure 4 A schematic diagram of the exhaust gas flow direction.

[0017] The components include: 1. Drainage and demisting chamber; 10. Support column; 11. Air inlet; 111. Coarse filter; 12. Air outlet; 121. Check valve; 13. First bend pipe; 131. First humidity sensor; 14. Second bend pipe; 141. Second humidity sensor; 15. Demisting chamber body; 16. Baffle plate; 17. Adjustment mechanism; 171. Support plate; 172. Rotating rod; 173. Rotary motor; 174. Worm gear; 175. Worm; 18. Semi-circular connecting pipe; 19. Drainage mechanism; 191. Conical water outlet cylinder; 192. Liquid level sensor; 193. Water storage tank; 194. Inclined plate; 195. Drainage pipe. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-5As shown, this utility model provides an intelligent drainage-demisting integrated terminal for high-humidity exhaust gas, including a drainage and demisting box 1, and an air inlet 11 and an air outlet 12 respectively installed on opposite sides of the box. High-humidity exhaust gas enters through the air inlet 11, and the dried gas after internal treatment is discharged from the air outlet 12. Several sets of support columns 10 are evenly arranged at the bottom of the drainage and demisting box 1. The support columns 10 provide stable support for the equipment, ensuring its structural stability during operation, and can also lift the equipment off the ground to facilitate the installation and maintenance of the bottom drainage mechanism 19. Two sets of demister bodies 15 are symmetrically arranged inside the drainage demister housing 1. One set of demister bodies 15 is connected to the air inlet 11, and the other set is connected to the air outlet 12, enabling secondary demistering and thus improving demistering efficiency. Several sets of baffles 16 are rotatably installed inside the demister body 15. The baffles 16 are the core demistering elements. By changing the direction of exhaust gas flow, they cause the mist droplets to separate from the gas under inertia and impact the plate wall, condense, and fall. The baffles 16 are made of 304 stainless steel and are blunted on the surface. Chemical treatment enhances corrosion resistance, preventing long-term adhesion of corrosive components in the mist droplets that could lead to rust on the sheet metal. An adjustment mechanism 17 is provided on the outside of the demister body 15 to synchronously adjust the rotation angle of all baffles 16 to adapt to different exhaust gas flow rates and mist droplet loads, achieving efficient separation. The bottom ends of the two sets of demister bodies 15 are connected by a semi-circular connecting pipe 18, and the bottom end of the connecting pipe is connected to a drainage mechanism 19. The semi-circular connecting pipe 18 can collect the condensate separated by the two sets of demister bodies 15 and guide it to the drainage mechanism 19 below for unified discharge.

[0022] like Figure 4 and 5 As shown, each baffle plate 16 is distributed with gaps along the vertical axis and is evenly inclined on both sides of the inner wall of the demister body 15. The gap arrangement of the baffle plates 16 forms a tortuous airflow channel, increasing the chance of fog droplet collision; the evenly inclined arrangement can distribute the airflow evenly, reduce eddies and pressure drop, and optimize the demisting efficiency and energy consumption.

[0023] like Figure 2 and 3As shown, the adjustment mechanism 17 includes support plates 171 symmetrically fixed to the outer wall of the demister body 15, rotating rods 172 rotatably mounted between the support plates 171, a rotary motor 173 mounted on one set of support plates 171, a worm gear 174 fixed to the end of the rotating shaft of the baffle plate 16 that passes through the demister body 15, and several sets of worms 175 fixed to the rotating rod 172 and meshing with the worm gears 174 in a corresponding manner; the output end of the rotary motor 173 rotatably passes through the support plate 171 and is connected to the rotating rod 172, and the rotary motor 173 drives the rotating rod 172 to rotate. The movement drives all the worm gears 175 fixed on the rotating rod 172 to rotate synchronously; each worm gear 175 drives a meshing worm wheel 174, thereby driving the corresponding baffle plate 16 shaft to rotate, thus adjusting the optimal tilt angle of the baffle plate 16 according to the humidity data monitored by the system, thereby improving the defogging effect; the support plate 171, rotating rod 172, worm gears 175 and worm wheels 174 are all made of 2Cr13 stainless steel, and the transmission contact surfaces are coated with molybdenum disulfide high-temperature anti-corrosion grease, which not only ensures smooth transmission, but also isolates the mechanical parts from the corrosion of corrosive gases.

[0024] like Figure 1 , 2 As shown in Figures 4 and 5, the drainage mechanism 19 includes a conical outlet cylinder 191 with a valve at its bottom, a level sensor 192 located inside the conical outlet cylinder 191, a water storage tank 193 connected to the bottom of the conical outlet cylinder 191, an inclined plate 194 installed inside the water storage tank 193, and a drain pipe 195 connected to the water storage tank 193 and equipped with a valve. The top of the conical outlet cylinder 191 is connected to the bottom of the connecting pipe, and condensate flows into the conical outlet cylinder 191 through the connecting pipe. The level sensor 192 monitors the water level in real time. When the water level reaches a set high level, the control system opens the valve at the bottom of the conical outlet cylinder 191, and the water flows into the water storage tank 193. The inclined plate 194 guides the water flow to the drain pipe 195. The water storage tank 193 serves as a temporary storage and settling tank, and the water is ultimately discharged periodically or continuously through its drain valve. The conical structure of the conical water outlet cylinder 191 facilitates water flow collection and accelerated discharge; the probe of the level sensor 192 is made of Hastelloy C276, which is suitable for corrosive media that may be carried by condensate, thus preventing the sensor from failing due to corrosion.

[0025] like Figure 2 , 4As shown in Figure 5, a coarse filter 111 is installed at the air inlet 11. The coarse filter 111 can remove large particulate impurities carried in the exhaust gas in advance, preventing them from entering the demister body 15 and clogging or abrading the baffle plate 16, thus playing a primary protection role. A first bent pipe 13 connects the air inlet 11 and the corresponding demister body 15. A first humidity sensor 131 is installed inside the first bent pipe 13. The first bent pipe 13 guides the exhaust gas into the demister body 15, and the first humidity sensor 131 inside is used to monitor the initial humidity of the inlet exhaust gas and provide initial operating data for the system. The first bent pipe 13, the second bent pipe 14, the semi-circular connecting pipe 18, the conical water outlet cylinder 191, the water storage tank 193, and the drain pipe 195 are all made of 316 stainless steel and welded together. The inner wall of the pipe is electrolytically polished to reduce the adhesion of corrosive media. The valve cores of the valve at the bottom of the conical water outlet cylinder 191 and the valve of the drain pipe 195 are made of polytetrafluoroethylene (PTFE). The valve seat is made of 316L stainless steel to ensure the valve's sealing performance and service life in corrosive environments.

[0026] like Figure 1 , 2 As shown in Figures 4 and 5, a check valve 121 is installed on the outlet 12. The check valve 121 prevents the treated gas from flowing back or external air from entering the system in reverse, ensuring the one-way flow of the process and system safety. A second bent pipe 14 connects the outlet 12 to the corresponding demister body 15. A second humidity sensor 141 is installed inside the second bent pipe 14. The second bent pipe 14 guides the treated gas out, and the second humidity sensor 141 inside monitors the humidity of the final outlet gas, combining the data with that of the first humidity sensor 131. The system can calculate the defogging efficiency in real time and feed the data back to the adjustment mechanism 17 to control the angle of the baffle 16, ultimately achieving intelligent operation. The probe housings and cable connectors of the first humidity sensor 131 and the second humidity sensor 141 are made of 316L stainless steel, and the surface of the sensing element is covered with a polytetrafluoroethylene (PTFE) anti-corrosion coating, which can resist the corrosion of acid and alkali components in high-humidity corrosive exhaust gas and ensure long-term monitoring accuracy. The first bend pipe 13 and the second bend pipe 14 can use the bending structure of the pipe to forcibly change the flow direction of high-speed exhaust gas. When the airflow carrying residual mist droplets passes through the bend, due to inertia, the denser droplets cannot turn synchronously with the gas and are thus thrown towards and hit the outer wall of the pipe, achieving pre-separation. At the same time, this structure provides a stable and representative flow field environment for the first humidity sensor 131 and the second humidity sensor 141 installed in the pipe, ensuring the accuracy of humidity monitoring data.

[0027] In practical use 1. Start-up and Intake Pretreatment: High-humidity exhaust gas is introduced through the intake pipe 11 and first passes through the coarse filter 111 to intercept large particulate impurities. Subsequently, the exhaust gas enters the first bend pipe 13, where its flow field is homogenized and inertial pre-separation is achieved (some droplets impact the pipe wall due to inertia). At the same time, the first humidity sensor 131 inside the pipe monitors the initial humidity in real time, providing reference data for system adjustment.

[0028] 2. Core Demisting and Intelligent Adjustment: The pre-treated exhaust gas sequentially enters the main body 15 of the two-stage demisting chamber. When flowing through the baffle plate 16, the exhaust gas is forced to change direction multiple times due to the tortuous passage. The mist droplets collide with the plate wall and condense under the action of inertia, realizing gas-liquid separation. After secondary deep treatment, the gas passes through the second bending pipe 14, and the final humidity is detected by the second humidity sensor 141. Then, it is discharged through the outlet pipe 12 in compliance with standards.

[0029] The system's intelligent adjustment process is achieved through the linkage between sensors and the main control unit: the first and second humidity sensors 131 / 141 convert analog humidity signals into digital signals via waterproof signal cables, uploading them to the external main control unit once per second. The main control unit calculates the real-time efficiency based on preset parameters (such as an outlet humidity limit of 5% RH and a defogging efficiency target of 98%), and then determines the operating condition. If the outlet humidity exceeds the standard or the efficiency fails to meet the standard, it immediately outputs a pulse command to the rotary motor 173 of the adjustment mechanism 17, specifying the adjustment angle of the baffle 16 (such as adjusting by 5° or 10° based on the humidity difference). The motor drives the rotating rod 172 to rotate, synchronously adjusting the angles of all baffles through the worm gear 175 and worm wheel 174 until the sensor feedback data returns to the normal range, at which point the motor stops, completing the closed-loop adjustment.

[0030] 3. Automatic Condensate Discharge: Condensate separated by the two-stage demister falls along the tank wall and collects through the semi-circular connecting pipe 18 to the conical outlet cylinder 191 of the drainage mechanism 19. When the level sensor 192 detects that the water level has reached the set high level, the control system automatically opens the bottom valve. The water flows through the inclined plate 194 in the water storage tank 193 and is discharged through the drain pipe 195. After drainage is completed, the bottom valve closes. If the second humidity sensor 141 still detects abnormal humidity at this time, the main control unit will check in conjunction with the data from the level sensor 192: if the drainage is normal, the baffle angle will be readjusted; if the water level is abnormal, a drainage fault alarm will be triggered to ensure rapid problem location. The entire process achieves fully automatic closed-loop discharge and circulation of condensate.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An intelligent drainage-demisting integrated terminal for high-humidity exhaust gas, comprising a drainage-demisting box (1), and a gas inlet pipe (11) and a gas outlet pipe (12) respectively arranged on opposite sides of the box, characterized in that: The drainage demisting box (1) is symmetrically provided with two sets of demisting box bodies (15), one set of the demisting box bodies (15) is connected to the air inlet (11), and the other set of demisting box bodies (15) is connected to the air outlet (12); Several sets of baffles (16) are rotatably installed inside the main body (15) of the demister box. An adjustment mechanism (17) is provided on the outside of the main body (15) of the demister box; The bottom ends of the two sets of the demister box bodies (15) are connected by a semi-circular connecting pipe (18), and the bottom end of the connecting pipe is connected to a drainage mechanism (19).

2. The intelligent drainage-demisting integrated terminal for high-humidity exhaust gas according to claim 1, characterized in that: Each of the baffles (16) is distributed with gaps along the vertical axis and is evenly inclined on both sides of the inner wall of the demister body (15).

3. A smart integrated drainage-demisting terminal for high-humidity exhaust gas according to claim 1 or 2, characterized in that: The adjustment mechanism (17) includes support plates (171) symmetrically fixed to the outer wall of the demister body (15), rotating rods (172) rotatably installed between the support plates (171), a rotary motor (173) set on one of the support plates (171), a worm gear (174) fixed to the end of the rotating shaft that passes through the demister body (15) with the baffle plate (16), and several sets of worms (175) fixed on the rotating rod (172) and meshing with the worm gears (174) in a one-to-one correspondence. The output end of the rotary motor (173) rotates through the support plate (171) and is connected to the rotating rod (172).

4. The intelligent drainage-demisting integrated terminal for high-humidity exhaust gas according to claim 1, characterized in that: The drainage mechanism (19) includes a conical water outlet cylinder (191) with a valve at the bottom, a liquid level sensor (192) installed in the conical water outlet cylinder (191), a water storage tank (193) connected to the bottom of the conical water outlet cylinder (191), an inclined plate (194) installed inside the water storage tank (193), and a drain pipe (195) connected to the water storage tank (193) and equipped with a valve. The top end of the conical water outlet cylinder (191) is connected to the bottom end of the semi-circular connecting pipe (18); The bottom end of the conical water outlet cylinder (191) is inserted into the bottom of the drainage and demisting box (1).

5. The intelligent drainage-demisting integrated terminal for high-humidity exhaust gas according to claim 1, characterized in that: A coarse filter (111) is installed at the air inlet (11).

6. The intelligent drainage-demisting integrated terminal for high-humidity exhaust gas according to claim 1, characterized in that: The air inlet (11) is connected to the corresponding demister body (15) by a first bent pipe (13). A first humidity sensor (131) is installed inside the first bent tube (13).

7. The intelligent drainage-demisting integrated terminal for high-wet exhaust gas according to claim 1, characterized in that: A check valve (121) is installed on the air outlet (12).

8. The intelligent drainage-demisting integrated terminal for high-humidity exhaust gas according to claim 1, characterized in that: A second bend pipe (14) connects the air outlet (12) to the corresponding demister body (15). A second humidity sensor (141) is installed inside the second bent tube (14).

9. The intelligent drainage-demisting integrated terminal for high-wet exhaust gas according to claim 1, characterized in that: The bottom of the drainage and demisting box (1) is uniformly provided with several sets of support columns (10).

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