Waste gas treatment equipment capable of efficiently removing viscous particulate matters
The combination of a cyclone dust collector and a gas-liquid mixing separator achieves efficient removal of sticky particulate matter, solving the problems of easy clogging and difficult maintenance of equipment in existing technologies, reducing water consumption and operating costs, and meeting energy conservation and carbon reduction requirements.
Patent Information
- Application Number
- CN202421721429.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-07-19
AI Technical Summary
Existing technologies are generally ineffective in treating sticky particulate matter. Cyclone dust collectors are prone to clogging, bag filter dust collectors require frequent and costly replacement, and spray tower water treatment is complex and costly, making it difficult to remove sticky particulate matter efficiently and economically.
A combination of cyclone dust collector and gas-liquid mixed separator is adopted, and the cyclone separation principle and cyclone circulation spray system are utilized, combined with anti-stick coating and cleaning components to achieve two-stage treatment. First, cyclone separation pretreatment is performed, and then the gas-liquid mixed separator is used to remove particulate matter.
It improves the processing efficiency of the equipment, reduces water consumption and operating costs, solves the problems of short equipment life and difficult maintenance, and meets the requirements of energy conservation and carbon reduction.
Smart Images
Figure CN223351324U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to waste gas treatment equipment for efficiently removing sticky particles. Background Art
[0002] In current industrial production processes, waste gas treatment is a crucial environmental component. Waste gas pollutants include not only volatile organic compounds (VOCs) but also various particulates. These particulates can be categorized by composition, such as iron powder, resin, and tar, while their physical properties further subdivide them into large and small particles, as well as sticky and non-sticky particles. Among these particulates, sticky particles, such as paint exhaust and tar exhaust, pose a significant challenge to industrial waste gas treatment due to their high treatment complexity.
[0003] At present, the common equipment used in industry to treat this type of waste gas include cyclone dust collectors, bag filter dust collectors and spray towers. These equipment have some problems during the treatment process:
[0004] 1. Cyclone dust collector: It has limited effect in treating large amounts of exhaust gas, especially when the working conditions are unstable. Particles tend to adhere to the inner wall of the equipment, making it difficult to clean, thus shortening the service life of the equipment.
[0005] 2. Bag filter dust collector: The filter bag is easily clogged, resulting in high replacement frequency, increased operating costs, and affected production efficiency.
[0006] 3. Spray Tower: Although recycled water is used, the recycled water must be frequently replaced and further treated to remove paint residue particles. The water treatment equipment requires constant addition of chemicals, which is not only costly but also requires manual operation. The resulting paint residue, considered hazardous waste, must be handled externally, adding to the company's financial burden at every stage.
[0007] To address the above issues, we propose an exhaust gas treatment equipment that can efficiently remove sticky particulate matter to achieve a more efficient, economical and environmentally friendly solution. Utility Model Content
[0008] The purpose of the utility model is to solve the shortcomings of the prior art such as general treatment effect on sticky particulate matter, and to propose an exhaust gas treatment device that can efficiently remove sticky particulate matter.
[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0010] Design an exhaust gas treatment device that can efficiently remove sticky particulate matter, including:
[0011] A cyclone dust collector and a gas-liquid mixture separator mounted on a bracket;
[0012] A fan unit is installed on the top of the cyclone dust collector, and the air outlet of the fan unit is connected to the inlet of the gas-liquid mixing separator;
[0013] The gas-liquid mixed separator comprises a box body, in which a spray assembly and a swirl plate are arranged, and one side of the box body is also connected to an exhaust pipe.
[0014] Furthermore, the spray assembly includes a water tank located at the bottom of the box body, and at least one branch pipe is fixedly installed on the upper inner side of the box body, and several nozzles are distributed on the branch pipe, wherein the water tank is connected to the at least one branch pipe water channel through pipes and a water pump.
[0015] Furthermore, two of the branch pipes and two of the swirl plates are provided, and the two branch pipes are stacked and distributed above the two swirl plates.
[0016] Furthermore, the gas-liquid mixture separator further includes a demisting baffle, and two demisting baffles are inclined and arranged in opposition, and the two demisting baffles are in a V-shaped structure.
[0017] Furthermore, the inner wall of the cyclone dust collector is provided with an anti-stick coating, and a cleaning component is also provided on the inner top of the cyclone dust collector.
[0018] Furthermore, the cleaning assembly includes a water pipe installed on the inner top of the cyclone dust collector, the end of the water pipe passes through and extends to the outside of the cyclone dust collector, and a spray head is fixedly installed on the water pipe.
[0019] Furthermore, a collecting bucket is placed at the bottom discharge port of the cyclone dust collector, and universal wheels are fixed to the bottom of the bracket and the collecting bucket.
[0020] The utility model proposes a waste gas treatment equipment for efficiently removing sticky particulate matter, and its beneficial effects are: this equipment is used to treat waste gas in two stages through a cyclone dust collector and a gas-liquid mixing separator. The first stage uses the cyclone separation principle for pretreatment, and effectively removes particulate matter through special materials and a cleaning system, reducing the pressure of subsequent treatment. The second stage adopts a cyclone and circulating spray system to absorb the particulate matter into water, and treats it through a specially designed defogger system. Compared with the existing technology, this equipment has the following advantages: it occupies a small space and can be placed directly indoors, shortening the air duct transportation distance; by optimizing the cyclone separation principle, it solves the problems of short equipment life and difficult maintenance caused by sticky particulate matter; while achieving the same treatment effect, it reduces water consumption by at least half, reduces the demand for secondary pollution treatment and operating costs, and meets the national requirements for energy conservation and carbon reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1It is a structural diagram of the utility model;
[0022] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of area A.
[0023] In the figure: 1. Bracket; 2. Cyclone dust collector; 21. Anti-stick coating; 22. Cleaning component; 3. Gas-liquid mixing separator; 31. Box; 32. Spray component; 321. Water tank; 322. Nozzle; 323. Water pump; 33. Swirl plate; 34. Exhaust pipe; 35. Demisting baffle; 4. Fan unit; 5. Collection bucket. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0025] Reference Figure 1-2 An embodiment of the present invention discloses an exhaust gas treatment device for efficiently removing sticky particulate matter. Specifically, the exhaust gas treatment device includes:
[0026] A cyclone dust collector 2 and a gas-liquid mixture separator 3 are mounted on the bracket 1;
[0027] A fan unit 4 is installed on the top of the cyclone dust collector 2. The fan unit 4 in this embodiment includes a motor, a fan volute, and fan blades placed in the fan volute. The fan blades are connected to the shaft end of the motor to achieve rotation. The air outlet of the fan unit 4 is connected to the inlet of the gas-liquid mixing separator 3.
[0028] Among them, the gas-liquid mixing separator 3 includes a box body 31, in which a spray assembly 32 and a swirl plate 33 are arranged. One side of the box body 31 is also connected to an exhaust pipe 34. The specific swirl plate 33 is composed of a ring frame and a plurality of guide blades arranged in the ring frame. A central tube is fixed between the plurality of guide blades for guiding the airflow. This structure is an existing technology and will not be described in detail here.
[0029] In some embodiments, the spray assembly 32 includes a water tank 321 located at the bottom of the box body 31, and at least one branch pipe is fixedly installed on the upper inner side of the box body 31, and a plurality of nozzles 322 are distributed on the branch pipe, wherein the water tank 321 is connected to at least one branch pipe water channel through pipes and a water pump 323. During specific operation, the water in the water tank 321 is pumped into the branch pipe by the water pump 323, and sprayed into the box body 31 through multiple nozzles 322 for mixing with particles in the exhaust gas.
[0030] On the basis of the above embodiment, in this embodiment, two branch pipes and two swirl plates 33 are provided, and the two branch pipes are stacked and distributed above the two swirl plates 33 .
[0031] Furthermore, the gas-liquid mixed separator 3 in this embodiment further includes a demisting baffle 35 . The demisting baffles 35 are inclined and arranged in pairs, and the two demisting baffles 35 are in a V-shaped structure.
[0032] During operation, under the action of the fan unit 4, sticky particles are collected and enter the cyclone dust collector 2. At this time, the first stage begins. This stage utilizes the principle of cyclonic separation of the cyclone dust collector 2, specifically including the process of using the centrifugal force generated by the rotating dust-laden airflow to separate the particulate pollutants from the gas. When the dust-laden airflow enters the cyclone dust collector 2 through the air inlet pipe of the cyclone dust collector 2, the airflow changes from linear motion to circular motion. Most of the rotating airflow spirals downward along the wall and the cylinder, flowing toward the cone. This is usually called external vortex flow.
[0033] Afterwards, the dust-laden gas generates centrifugal force during its rotation, flinging particles with a density greater than that of the gas toward the wall. Once the particles come into contact with the wall, they lose their inertial force and, driven by the momentum of their inlet velocity and downward gravity, fall along the wall, entering the bottom exhaust pipe of cyclone dust collector 2. When the descending outward-spinning airflow reaches the cone, it converges toward the center of the collector due to the contraction of the cone, and its tangential velocity continues to increase. When the airflow reaches a certain position at the lower end of the cone, it swirls upward in the cyclone dust collector in the same direction of rotation, continuing its spiral motion. Ultimately, the purified gas is discharged through the exhaust pipe. This is usually called an inward-spinning flow, and some of the uncollected particles are also discharged.
[0034] The gas discharged through the inner vortex directly reaches the fan unit 4, which blows the gas into the gas-liquid mixed separator 3 in the second stage. The spraying in this stage is consistent with the wind direction and adopts a downstream method. A two-stage spray assembly 32 is provided in this stage, and two swirl plates 33 are provided at the bottom. When the airflow passes through the blades of the swirl plates 33, a rotation and centrifugal motion is generated. The absorption liquid is sprayed into the internal space, forming a rotation and centrifugal effect with the rotating downward airflow, and sprayed into fine droplets. After being thrown to the tower wall, the droplets are collected by gravity to the baffle and flow into the water tank 321. The absorption liquid of each layer falls down due to the centrifugal action of the vortex. The main mechanism is the inertial collision of dust particles and droplets, centrifugal separation and liquid film adhesion, etc. The gas-liquid contact time is short, which is suitable for gas phase diffusion control. The process adopts the design of two cyclone plates 33. The flue gas after primary purification rotates and descends. The cyclone plate 33 has the function of guidance and relay. The kinetic energy of the flue gas itself is used to generate aerodynamic cyclone. The gas and liquid two phases are fully in contact and mass transfer reaction is carried out. The flue gas passes through the multi-stage cyclone plates 33 in the tower to effectively improve the dust removal efficiency. After the gas-liquid cyclone, it also passes through the demisting baffle 35. The demisting baffle 35 can directly change the wind direction and is installed obliquely inside. Under the condition of cyclonic flow, the gas and liquid can only collide with the water surface under the guidance of the demisting baffle 35 to be bulletproof. After entering the inside of the demisting baffle 35, they are discharged from the equipment. Therefore, the demisting baffle 35 has the dual functions of gas-liquid diversion and demisting. After passing through the demisting baffle 35, the gas is discharged to complete the removal of sticky particles.
[0035] In some embodiments, the inner wall of the cyclone dust collector 2 of the present invention is provided with an anti-stick coating 21, and a cleaning component 22 is further provided on the inner top of the cyclone dust collector 2. Preferably, the anti-stick coating 21 in this embodiment is preferably provided with a polytetrafluoroethylene material. Particles thrown onto the inner wall can only slowly fall into the collection area on the lower side of the cyclone dust collector 2. If there is still some adherence to the inner wall, it can be washed away by the cleaning component 22.
[0036] On the basis of the above embodiment, the cleaning component 22 in this embodiment includes a water pipe installed on the inner top of the cyclone dust collector 2, the end of the water pipe passes through and extends to the outside of the cyclone dust collector 2, and a spray head is fixedly installed on the water pipe. That is to say, when some particulate matter still remains on the cyclone dust collector 2, the water pipe can be directly connected to an external water pump to supply water, and the inner wall of the cyclone dust collector 2 can be cleaned and flushed through the spray head.
[0037] Of course, considering the convenient mobility of the entire equipment, a collecting bucket 5 is placed at the bottom discharge port of the cyclone dust collector 2 in this embodiment, and the top of the collecting bucket 5 should have a feed port that is compatible with the discharge port of the cyclone dust collector 2. The bracket 1 and the bottom of the collecting bucket 5 are both fixed with universal wheels. Preferably, the universal wheel described in this embodiment uses a wheel with a brake structure.
[0038] In summary, this equipment uses a cyclone dust collector 2 and a gas-liquid mixing separator 3 to treat exhaust gas in two stages. In the first stage, the cyclone separation principle is used for pretreatment. Special materials and cleaning systems are used to effectively remove particulate matter and reduce the pressure of subsequent treatment. In the second stage, a cyclone and circulating spray system is used to absorb the particulate matter into water and treat it through a specially designed defogger system. Compared with the existing technology, this equipment has the following advantages: it occupies a small space and can be placed directly indoors, shortening the air duct transportation distance; by optimizing the cyclone separation principle, it solves the problems of short equipment life and difficult maintenance caused by sticky particulate matter; while achieving the same treatment effect, it reduces water consumption by at least half, reduces the demand for secondary pollution treatment and operating costs, and meets the national requirements for energy conservation and carbon reduction.
[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An exhaust gas treatment device for efficiently removing sticky particles, characterized in that ,include: A cyclone dust collector (2) and a gas-liquid mixed separator (3) mounted on a bracket (1); A fan unit (4) is installed on the top of the cyclone dust collector (2), and the air outlet of the fan unit (4) is connected to the inlet of the gas-liquid mixing separator (3); The gas-liquid mixed separator (3) comprises a box (31), a spray assembly (32) and a swirl plate (33) are arranged in the box (31), and one side of the box (31) is also connected to an exhaust pipe (34).
2. The waste gas treatment equipment for efficiently removing sticky particulate matter according to claim 1 is characterized in that: The spray assembly (32) comprises a water tank (321) located at the bottom of the box body (31), at least one branch pipe is fixedly installed above the inner side of the box body (31), and a plurality of spray heads (322) are distributed on the branch pipe, wherein the water tank (321) is connected to the at least one branch pipe water channel through a pipe and a water pump (323).
3. The waste gas treatment equipment for efficiently removing sticky particulate matter according to claim 2 is characterized in that: Two of the branch pipes and two of the swirl plates (33) are provided, and the two branch pipes are stacked and distributed above the two swirl plates (33).
4. The waste gas treatment equipment for efficiently removing sticky particulate matter according to claim 1 is characterized in that: The gas-liquid mixed separator (3) further comprises a demisting baffle (35), wherein two demisting baffles (35) are inclined and arranged in opposition, and the two demisting baffles (35) are in a V-shaped structure.
5. The waste gas treatment equipment for efficiently removing sticky particulate matter according to claim 1 is characterized in that: The inner wall of the cyclone dust collector (2) is provided with an anti-stick coating (21), and a cleaning component (22) is also provided on the inner top of the cyclone dust collector (2).
6. The waste gas treatment equipment for efficiently removing sticky particulate matter according to claim 5 is characterized in that: The cleaning assembly (22) comprises a water pipe installed on the inner top of the cyclone dust collector (2), the end of the water pipe passes through and extends to the outside of the cyclone dust collector (2), and a spray head is fixedly installed on the water pipe.
7. The waste gas treatment equipment for efficiently removing sticky particulate matter according to claim 1 is characterized by: A collecting bucket (5) is placed at the bottom discharge port of the cyclone dust collector (2), and universal wheels are fixed to the bottoms of the bracket (1) and the collecting bucket (5).