An industrial environment-friendly dust removal system

Abstract

The utility model discloses an industrial environmental protection dust removal system, including cyclone dust collector, filter core dust collector, multiple spray water curtain machine and centrifugal induced draft fan that communicate in proper order, dust-containing gas enters conical cyclone dust collector through tangential air inlet, and 15-25m / s airflow forms rotary motion separation large particle dust, and the gas is into filter core dust collector through pipeline after preliminary purification, and the filter core of outer layer covers polyester or PTFE film filters fine dust, and the pulse spray dust cleaning device regularly cleans dust, and finally enters multiple spray water curtain machine through centrifugal induced draft fan, and multilayer water curtain spray structure captures superfine dust, and waste water is filtered by drum type paper belt filter machine and is recycled for spraying by water pump, and the system three -stage purification, and high -efficient processing different particle size dust realizes dust recovery and water circulation, and is suitable for industrial unorganized emission management.

Description

Technical Field

[0001] This utility model relates to the technical field of environmental protection dust removal devices, specifically an industrial environmental protection dust removal system. Background Technology

[0002] With the rapid advancement of my country's industrialization and the continuous expansion of industrial production scale, particulate matter pollution from various production processes has become increasingly prominent, becoming a key factor affecting air quality. Particularly in industries such as metallurgy, chemicals, building materials, and machinery processing, large amounts of dust particles of varying sizes are released during production. This not only causes severe pollution such as smog but also poses a serious threat to the health of operators. Long-term exposure can lead to occupational diseases such as respiratory illnesses. Furthermore, dust accumulation poses safety hazards such as fires and explosions, creating a dual challenge to enterprise production safety and the surrounding ecological environment. Therefore, effectively controlling industrial dust emissions and reducing air pollutant concentrations has become a top priority in current environmental protection work and an essential requirement for enterprises to achieve green and sustainable development.

[0003] In the field of industrial dust control, fugitive emissions (i.e., emissions of pollutants that escape into the atmosphere through equipment leaks, open material transfers, etc., without passing through fixed exhaust stacks) have become a key focus and challenge in dust control due to their dispersed sources and difficulty in control. Current measures for controlling fugitive dust mainly include wet dust suppression, physical covering and sealing, and end-of-pipe collection and purification. However, existing technologies generally suffer from the following problems: single treatment equipment cannot meet the high-efficiency purification needs of dust with different particle sizes; for example, traditional cyclone dust collectors have low capture efficiency for fine particles, and simple water curtain spraying easily generates secondary water pollution; some combined purification systems have unreasonable structural designs, with poor connections between treatment units, resulting in low overall purification efficiency and high energy consumption; furthermore, most systems lack a sound dust recovery and water recycling mechanism, which not only increases operating costs but may also cause resource waste and secondary pollution.

[0004] Therefore, developing an industrial environmental dust removal system that integrates efficient graded purification, automatic dust removal, and water recycling functions to solve the problems of low purification efficiency, high energy consumption, and complex operation and maintenance in existing technologies has become an urgent need in the field of industrial dust control. Utility Model Content

[0005] (I) Technical Issues

[0006] This utility model provides an industrial environmental dust removal system that integrates efficient graded purification, automatic dust removal, and water recycling functions to solve the problems of low dust purification efficiency, high energy consumption, complex operation and maintenance, and easy generation of secondary pollution in the existing technology.

[0007] (II) Technical Content

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: an industrial environmental protection dust removal system, including a cyclone dust collector, a filter dust collector and a multi-spray water curtain machine connected in sequence, and a centrifugal induced draft fan that provides negative pressure to the system. The cyclone dust collector is provided with a tangential air inlet at the top, a dust collection hopper at the bottom, and a purified gas outlet at the top.

[0009] The air inlet of the filter dust collector is connected to the purified gas outlet of the cyclone dust collector through a pipe. The filter dust collector is equipped with vertically installed filter elements and a pulse jet cleaning device, and a dust collection hopper is provided at the bottom.

[0010] The multi-spray water curtain machine is connected to the filter dust collector via a centrifugal fan. The multi-spray water curtain machine has a multi-layer water curtain spray structure inside and is connected to a drum paper belt filter at the bottom via a pipe. The outlet of the drum paper belt filter is connected to the water curtain spray structure via a water pump. The multi-spray water curtain machine has a discharge port at the top.

[0011] Furthermore, the cylinder of the cyclone dust collector has a conical structure, and the airflow velocity at the tangential air inlet is 15–25 m / s.

[0012] Furthermore, the filter element of the filter dust collector is wrapped with polyester membrane filter material or PTFE membrane filter material, and a metal support basket is provided inside the filter dust collector.

[0013] Furthermore, the water curtain spray structure consists of staggered PPR baffles and a nozzle array.

[0014] Furthermore, the pulse jet cleaning device includes a compressed air storage tank, a jet pipe and a pulse valve. The jet pipe extends into the interior of the filter dust collector and has a jet nozzle corresponding to the filter element. The jet pressure is 4–7 bar.

[0015] (III) Technical Effects

[0016] The advantages of this utility model compared with the prior art are as follows:

[0017] 1. The system employs a three-stage synergistic treatment process involving a cyclone dust collector, a cartridge dust collector, and a multi-spray water curtain system to effectively remove dust particles of varying sizes. The conical cyclone dust collector, with its tangential airflow velocity of 15–25 m / s, efficiently separates large-diameter dust particles. The polyester or PTFE membrane filter media on the outer layer of the cartridge, combined with a metal support basket, precisely captures fine particles. A pulse-jet cleaning device (4–7 bar jet pressure) ensures long-term stable operation of the cartridge. The multi-spray water curtain system, with its staggered PPR baffles and nozzle array, forms a full-coverage water curtain, further purifying ultrafine dust. After this three-stage treatment, the dust concentration in the emitted gas is significantly reduced, meeting stringent environmental standards.

[0018] 2. The drum-type paper belt filter connected to the bottom of the multi-spray water curtain machine can efficiently filter the spray wastewater. The filtered clean water is returned to the water curtain spray structure by a water pump, realizing the recycling of water resources and greatly reducing the consumption of fresh water. At the same time, the dust collection hoppers of the cyclone dust collector and the filter dust collector can centrally collect dust, which is convenient for subsequent resource treatment or safe disposal, reducing the risk of solid waste pollution.

[0019] 3. The pulse jet cleaning device of the filter cartridge dust collector can automatically remove dust adhering to the surface of the filter material, avoiding frequent manual cleaning and extending the service life of the filter cartridge; the paper belt replacement operation of the drum paper belt filter is simple, which can effectively prevent the water curtain nozzle from clogging and ensure the stable operation of the spray system; the various equipment units are tightly connected, and the negative pressure environment provided by the centrifugal induced draft fan ensures smooth airflow, reduces system energy consumption, and the overall operating cost is significantly lower than that of traditional dust collection systems.

[0020] 4. The system has a general purification capability for fugitive dust emissions and can meet the dust removal needs of multiple industries such as metallurgy, chemical industry, and building materials. The PPR water baffle and polyester / PTFE filter media used are corrosion-resistant materials that can adapt to complex working environments. There is no secondary water pollution or dust emission throughout the entire process, which is in line with the green and environmentally friendly development concept. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an industrial environmental dust removal system according to this utility model. Figure 1 .

[0022] Figure 2 This is a three-dimensional structural diagram of an industrial environmental dust removal system according to this utility model. Figure 2 .

[0023] Figure 3 This is a three-dimensional structural diagram of an industrial environmental dust removal system according to this utility model. Figure 3 .

[0024] Figure 4 This is a schematic diagram of the main structure of an industrial environmental dust removal system according to this utility model.

[0025] Figure 5 This is a left-side view of the structure of an industrial environmental dust removal system according to this utility model.

[0026] Figure 6 This is a top view schematic diagram of an industrial environmental dust removal system according to this utility model.

[0027] Figure 7 This is a left-side view of the structure of an industrial environmental dust removal system according to this utility model.

[0028] Figure 8 This is a top view schematic diagram of an industrial environmental dust removal system according to this utility model.

[0029] As shown in the figure: 1. Cyclone dust collector; 2. Filter cartridge dust collector; 3. Multi-spray water curtain machine; 4. Centrifugal induced draft fan; 5. Drum paper belt filter; 6. Water pump; 101. Tangential air inlet; 102. Dust collection hopper; 103. Purified gas outlet; 201. Pipeline; 202. Filter cartridge; 203. Pulse jet cleaning device; 204. Dust collection hopper; 205. Support basket; 207. Compressed air storage tank; 301. Discharge port; 303. Water curtain spray structure. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., 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 utility model according to the specific circumstances.

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Combined with appendix Figure 1 To be continued Figure 8An industrial environmental dust removal system includes a cyclone dust collector 1, a filter cartridge dust collector 2, and a multi-spray water curtain machine 3 connected in sequence, as well as a centrifugal induced draft fan 4 to provide negative pressure to the system. The cyclone dust collector 1 has a tangential air inlet 101 at the top, a dust collection hopper 102 at the bottom, and a purified gas outlet 103 at the top. The air inlet of the filter cartridge dust collector 2 is connected to the purified gas outlet 103 of the cyclone dust collector 1 through a pipe 201. The filter cartridge dust collector 2 contains vertically installed filter cartridges 202 and pulse jet sprayers. The dust removal device 203 has a dust collection hopper 204 at the bottom; the multi-spray water curtain machine 3 is connected to the filter dust collector 2 through the centrifugal fan 4. The multi-spray water curtain machine 3 has a multi-layer water curtain spray structure 303 inside and is connected to the drum paper belt filter 5 through the pipe at the bottom. The water outlet of the drum paper belt filter 5 is connected to the water curtain spray structure 303 through the water pump 6. The multi-spray water curtain machine 3 has a discharge port 301 at the upper end. The water curtain spray structure 303 is composed of staggered PPR baffles and nozzle array.

[0034] In this embodiment, as a preferred technical solution, the cylinder of the cyclone dust collector 1 has a conical structure, and the airflow velocity at the tangential air inlet 101 is 15–25 m / s.

[0035] In this embodiment, as a preferred technical solution, the filter element 202 of the filter element dust collector 2 is wrapped with polyester membrane filter material or PTFE membrane filter material. The filter element dust collector 2 is provided with a metal support basket 205 inside. The pulse jet cleaning device 203 includes a compressed air storage tank 207, a jet pipe and a pulse valve. The jet pipe extends into the filter element dust collector 2 and is provided with a jet nozzle corresponding to the filter element 202. The jet pressure is 4-7 bar.

[0036] The working principle and process of this industrial environmental dust removal system are as follows:

[0037] First, the waste gas and dust generated in industrial production, including larger pollutant particles, are guided to the cyclone dust collector 1 under the negative pressure generated by the centrifugal induced draft fan 4. The dust-laden gas enters the cylinder of the cyclone dust collector 1 from the tangential inlet 101 at the top of the cyclone dust collector 1 at a speed of 15–25 m / s. Because the cylinder of the cyclone dust collector 1 has a conical structure, this design creates a strong rotating motion (external vortex) in the airflow inside the cylinder. The dust is separated by centrifugal force, and the rotating airflow spirals downward along the wall inside the cylinder (external vortex). Because the density of dust particles is much greater than that of gas, they are thrown towards the cylinder wall under the action of centrifugal force. The dust falls along the wall into the dust collection hopper 102. The separated dust particles lose kinetic energy after impacting the cylinder wall and slide down the conical cylinder wall under the action of gravity and the downward airflow to be collected in the dust collection hopper 102 at the bottom. Finally, after the purified gas rotates to the bottom of the cone, it turns back upward to form an internal vortex (clean gas), and rises and is discharged from the purified gas outlet 103 at the top of the cyclone dust collector 1.

[0038] Preliminary cleaned gas enters the inlet of the cartridge dust collector 2 from the purified gas outlet 103 of the cyclone dust collector 1 along the pipe 201. Under the negative pressure generated by the centrifugal induced draft fan 4, the dust-laden airflow is evenly distributed within the cartridge dust collector 2 and enters the filter chamber. The filter element 202 is installed vertically, with its outer layer wrapped with polyester or PTFE membrane filter media. The dust-laden gas flows from the outside to the inside of the filter element 202. As the gas passes through the filter media, larger particles are blocked on the surface of the filter media due to inertial collision, gravitational settling, or direct interception; finer particles enter the fibrous gaps inside the filter media and are captured through diffusion, electrostatic adsorption, and other effects (deep filtration). As the filtration process proceeds, a certain amount of dust will accumulate on the surface of the filter material. At this time, the pulse jet cleaning device 203 starts to work. Compressed air in the compressed air storage tank 207 is sprayed through the jet nozzle on the jet pipe at a jet pressure of 4-7 bar to blow the dust on the surface of the filter material into the dust collection hopper 204 at the bottom.

[0039] The gas, filtered by the filter cartridge dust collector 2, enters the multi-spray water curtain machine 3 under the action of the centrifugal induced draft fan 4. The multi-spray water curtain machine 3 has a multi-layer water curtain spray structure 303, which consists of staggered PPR baffles and a nozzle array. The dust-laden gas comes into full contact with the multi-layer water curtain within the multi-spray water curtain machine 3, and the ultrafine dust particles are captured by the water curtain. During this process, the PPR baffles effectively block water mist, preventing it from being discharged with the gas. The water at the bottom of the multi-spray water curtain machine 3, carrying the captured dust, enters the drum paper belt filter 5 through a pipe. The drum paper belt filter 5 filters this water, and the filtered clean water is pumped back to the water curtain spray structure 303 by the water pump 6, achieving water recycling. Finally, the gas, after three stages of purification, meets the emission requirements and is discharged from the exhaust port 301 at the top of the multi-spray water curtain machine 3.

[0040] 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 industrial environmental dust removal system, comprising a cyclone dust collector (1), a filter dust collector (2), and a multi-spray water curtain machine (3) connected in sequence, and a centrifugal induced draft fan (4) providing negative pressure to the system, characterized in that: The cyclone dust collector (1) is provided with a tangential air inlet (101) at the top, a dust collection hopper (102) at the bottom, and a purified gas outlet (103) at the top. The air inlet of the filter dust collector (2) is connected to the purified gas outlet (103) of the cyclone dust collector (1) through a pipe (201). The filter dust collector (2) is equipped with a vertically installed filter element (202) and a pulse jet cleaning device (203), and a dust collection hopper (204) is provided at the bottom. The multi-spray water curtain machine (3) is connected to the filter dust collector (2) via a centrifugal fan (4). The multi-spray water curtain machine (3) has a multi-layer water curtain spray structure (303) inside and is connected to a drum paper belt filter (5) at the bottom via a pipe. The outlet of the drum paper belt filter (5) is connected to the water curtain spray structure (303) via a water pump (6). The multi-spray water curtain machine (3) has a discharge port (301) at the top.

2. The industrial environmental dust removal system according to claim 1, characterized in that: The cyclone dust collector (1) has a conical structure and the airflow velocity at the tangential air inlet (101) is 15–25 m / s.

3. The industrial environmental dust removal system according to claim 1, characterized in that: The filter element (202) of the filter element dust collector (2) is wrapped with polyester membrane filter material or PTFE membrane filter material, and the filter element dust collector (2) is equipped with a metal support basket (205) inside.

4. The industrial environmental dust removal system according to claim 1, characterized in that: The water curtain spray structure (303) consists of staggered PPR baffles and a nozzle array.

5. An industrial environmental dust removal system according to claim 1, characterized in that: The pulse jet cleaning device (203) includes a compressed air storage tank (207), a jet pipe and a pulse valve. The jet pipe extends into the filter dust collector (2) and has a jet nozzle corresponding to the filter element (202). The jet pressure is 4–7 bar.

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