A dust control device for alternative fuels
By designing a device that includes dust collection, atomized spraying, and impurity removal mechanisms, the problem of excessive dust emissions during the use of alternative fuels in the cement industry has been solved, achieving effective dust control and production continuity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安徽海螺环保集团有限公司
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-31
AI Technical Summary
In the cement industry, the dust concentration generated during the use of alternative fuels is high, exceeding emission standards and affecting production safety and employee health.
Design a device that includes a dust collection mechanism, an atomizing spray mechanism, and a dust removal mechanism. The device separates dust by sucking it up and spraying water mist inside the dust collection box, and collects the moist dust using the dust removal mechanism, thereby achieving effective dust control.
Effective control of dust content ensures continuous production, and the removable dust removal mechanism enables cleaning and replacement of the equipment, reducing dust emissions and ensuring production safety and health.
Smart Images
Figure CN224573447U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of dust control using alternative fuels, and more specifically, to a device for controlling dust pollution from alternative fuels. Background Technology
[0002] With the continuous depletion of global energy, rapid population growth, and accelerating urbanization, traditional fossil fuels are becoming increasingly scarce, posing a bottleneck to economic and social development. Alternative fuel technologies, such as waste-derived fuels and solid recycled fuels, are being widely adopted by energy-intensive industries like cement, power, and steel due to their advantages of waste reduction, resource recovery, and energy conversion.
[0003] The typical process route for alternative fuels in the cement industry is as follows: combustible solid waste is first subjected to pretreatment processes such as crushing, magnetic separation, air separation, and drying to obtain RDF / SRF with uniform particle size and stable calorific value; then it is transferred to the kiln tail by a belt conveyor, and then lifted to the decomposition furnace by a shaftless screw (or chain plate machine), where it is co-combusted with pulverized coal at a high temperature of over 850℃ to achieve heat substitution and carbon emission reduction.
[0004] However, the raw materials for alternative fuels are complex, containing large amounts of plastics, paper, textiles, wood chips, and inert impurities. During crushing, screening, conveying, and lifting processes, dust particles with a diameter <100μm are easily generated due to mechanical impact, falling drop, and airflow turbulence. Especially at open or semi-enclosed points such as belt conveyor drop points, shaftless screw inlets, and decomposition furnace feed ports, the instantaneous dust concentration can reach 5–30 g / m³. 3 It far exceeds the 10 mg / m³ limit stipulated in the "Emission Standard of Air Pollutants for Cement Industry" (GB 4915-2013). 3 Emission limits. These limits negatively impact clean production on-site, equipment safety, and employee health. Utility Model Content
[0005] The purpose of this invention is to provide an alternative fuel dust control device that effectively controls the dust content on-site by extracting and separating dust from the site.
[0006] To achieve the above objectives, this utility model provides an alternative fuel dust control device, including a dust collection mechanism, a dust collection box, an atomizing spray mechanism, and a debris removal mechanism. The dust collection box is sealed, and the dust collection mechanism is connected to the dust collection box to collect dust from the site into the dust collection box. The dust collection box is equipped with an atomizing spray mechanism to spray water mist into the dust collection box, and the debris removal mechanism is located at the bottom of the dust collection box to receive the moist dust.
[0007] The dust removal mechanism is detachably connected to the dust collection box.
[0008] Preferably, the alternative fuel dust control device also includes an exhaust mechanism for discharging gases from the dust collection box.
[0009] Preferably, the exhaust mechanism includes an exhaust chamber and an exhaust pipe connected to the exhaust chamber. The exhaust pipe is used to discharge the air in the exhaust chamber. The exhaust chamber is connected to the dust collection box through a demisting perforated plate, and the exhaust chamber is configured to have a certain height.
[0010] Preferably, the dust collection mechanism includes a dust collection pipe and a dust collection port for collecting dust, and the dust collection pipe connects the dust collection port and the dust collection box.
[0011] Preferably, the atomizing spray mechanism includes an air inlet pipe, a water inlet pipe, and an atomizing nozzle connected to the air inlet pipe and the water inlet pipe, with the atomizing nozzle located near the dust collection pipe.
[0012] Preferably, the atomizing nozzle is located at the top of the dust collection box.
[0013] Preferably, multiple atomizing nozzles are provided along the direction from the dust collection pipe toward the demisting perforated plate.
[0014] Preferably, the dust collection box also includes a water receiving pool, which is located below the impurity removal mechanism, and the impurity removal mechanism and the water receiving pool are connected through a perforated impurity removal plate.
[0015] Preferably, the impurity removal mechanism is configured as a drawer type.
[0016] According to the above technical solution, the dust collection mechanism of this utility model is set at the alternative fuel feeding port, transfer station, and pretreatment workshop to suck up the dust in these production environments and draw the dust-containing gas into the dust collection box. The atomizing spray mechanism sprays water mist onto the dust collection box. After the dust enters the dust collection box, it will come into contact with and absorb the water mist. The dust becomes heavier after absorbing the water mist and finally falls onto the impurity removal mechanism below.
[0017] When impurities accumulate to a certain level on the impurity removal mechanism, the alternative fuel dust control device can be cleaned by disassembling the impurity removal mechanism 4 and replacing it with a new one. After cleaning, the disassembled impurity removal mechanism can be used as a spare part to replace the impurity removal mechanism in use during the next cleaning process.
[0018] Therefore, this alternative fuel dust control device can effectively control the dust content on site by absorbing dust and separating it from the air in the dust collection box, so that the dust can be collected on the impurity removal mechanism.
[0019] Furthermore, by making the impurity removal mechanism detachable, it is possible to achieve continuous production of alternative fuel dust control devices.
[0020] The impurity removal mechanism can be equipped with a weighing sensor. When the weight on the impurity removal mechanism exceeds the set value, the on-site operator can be notified to replace the impurity removal mechanism.
[0021] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0023] Figure 1 It is a dust control device for alternative fuels.
[0024] Explanation of reference numerals in the attached figures
[0025] 11 Dust collection pipe 2 Dust collection box
[0026] 31 Intake pipe 4 Impurity removal mechanism
[0027] 51 Exhaust chamber 52 Exhaust pipe
[0028] 53 Demisting Perforated Plate 12 Dust Collection Inlet
[0029] 32 Water inlet pipe 33 Atomizing nozzle
[0030] 6 Water inlet tank 41 Impurity removal perforated plate
[0031] 61 Filter Detailed Implementation
[0032] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0033] In this utility model, unless otherwise stated, directional words such as "lower part," "inner part," "near," and "top" included in the terminology only represent the location of the term in its normal use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.
[0034] See Figure 1 The aforementioned alternative fuel dust control device includes a dust collection mechanism, a dust collection box 2, an atomizing spray mechanism, and a debris removal mechanism 4. The dust collection box 2 is sealed. The dust collection mechanism is connected to the dust collection box 2 to collect dust from the site into the dust collection box 2. The dust collection box 2 is equipped with an atomizing spray mechanism to spray water mist into the dust collection box 2. The debris removal mechanism 4 is located at the lower part of the dust collection box 2 to receive the moist dust.
[0035] The impurity removal mechanism 4 is detachably connected to the dust collection box 2.
[0036] Through the implementation of the above technical solution, the dust collection mechanism is set up at the alternative fuel feeding port, transfer station, and pretreatment workshop to suck up the dust in these production environments and draw the dust-containing gas into the dust collection box 2. The atomizing spray mechanism will spray water mist onto the dust collection box 2. After the dust enters the dust collection box 2, it will come into contact with and absorb the water mist. The dust becomes heavier after absorbing the water mist and finally falls onto the impurity removal mechanism 4 below.
[0037] When impurities accumulate to a certain level on the impurity removal mechanism 4, the alternative fuel dust control device can be cleaned by disassembling the impurity removal mechanism 4 and replacing it with a new one. After cleaning, the disassembled impurity removal mechanism 4 can be used as a spare part to replace the impurity removal mechanism 4 in use during the next cleaning process.
[0038] Therefore, this alternative fuel dust control device can absorb dust and separate it from the air in the dust collection box 2, so that the dust can be collected on the impurity removal mechanism 4, thereby achieving effective control of the dust content on site.
[0039] Furthermore, by making the impurity removal mechanism 4 detachable, the goal of continuous production of the alternative fuel dust control device can also be achieved.
[0040] Preferably, a weighing sensor can be installed on the impurity removal mechanism 4. When the weight on the impurity removal mechanism 4 exceeds the set value, the on-site operator can be notified to replace the impurity removal mechanism 4.
[0041] In this embodiment, preferably, the alternative fuel dust control device also includes an exhaust mechanism for discharging gas from the dust collection box 2.
[0042] Preferably, the nozzle of the atomizing spray mechanism is a pneumatic atomizing nozzle. When using this nozzle, compressed air needs to be provided to mix with water in the nozzle. The high-speed turbulence of the gas-liquid two-phase flow atomizes the water. The atomized water droplets diffuse throughout the entire dust collection box 2. The dust entering the dust collection box 2 will adhere to the water droplets and become heavier. Under its own weight, it will fall onto the dust removal mechanism 4, thereby achieving the effect of separating dust from air.
[0043] The separated air can be discharged through the exhaust mechanism, thus forming a gas flow path in the dust collection box 2: air enters through the dust collection mechanism and air is discharged through the exhaust mechanism, achieving the effect of drawing in and discharging air while leaving dust behind.
[0044] Preferably, a filter device is required at the connection between the exhaust mechanism and the dust collection box 2 to filter dust and prevent some dust that has not yet fallen into the air from being discharged into the surrounding environment through the exhaust mechanism.
[0045] In this embodiment, preferably, the exhaust mechanism includes an exhaust chamber 51 and an exhaust pipe 52 connected to the exhaust chamber 51. The exhaust pipe 52 is used to exhaust the air in the exhaust chamber 51. The exhaust chamber 51 is connected to the dust collection box 2 through a demisting perforated plate 53. The exhaust chamber 51 is configured to have a certain height.
[0046] The exhaust pipe 52 is connected to the exhaust chamber 51, and the dust collection box 2 is connected to the exhaust chamber 51 through the demisting perforated plate 53. The dust collection box 2 and the exhaust chamber 51 together form a sealed structure. Dust enters the dust collection box 2 along with the air, and then the air passes through the demisting perforated plate 53 into the exhaust chamber 51. The dust is trapped inside the dust collection box 2 by the demisting perforated plate 53 and adheres to the demisting perforated plate 53. The dust adhering to the demisting perforated plate 53 continuously absorbs water mist, and its weight continuously increases until its weight increases to exceed the friction between it and the demisting perforated plate 53. At this point, the dust will slide down the demisting perforated plate 53 onto the impurity removal mechanism 4 below.
[0047] Preferably, a fan is installed along the air movement path to provide the power for air movement. In one embodiment, the fan is installed in the dust collection mechanism, which can quickly collect the dust on site and transport it to the dust collection box 2 under the action of the fan. In another embodiment, the fan is installed in the exhaust mechanism, which forms a negative pressure in the dust collection box 2 through the suction action of the fan, so that the dust collection mechanism can extract the mixture of dust and gas on site under the action of pressure difference.
[0048] The dust chamber 2 includes a dust gas containing chamber and a dust removal mechanism 4 located below the dust gas containing chamber. The dust entering the dust chamber 2 is first stored in the dust gas containing chamber and combines with water mist in the dust gas containing chamber. Some dust particles with more water mist will fall first, while other dust particles that do not fall in time will move towards the exhaust chamber 51 with the air and be intercepted by the demisting porous plate 53 after contacting it. Finally, the air enters the exhaust chamber 5 and is discharged through the exhaust pipe 52.
[0049] The exhaust chamber 51 can achieve the effect of uniformizing the exhaust pressure. By setting the pressure equalization function of the exhaust chamber, it can prevent the gas from entering the dust collection mechanism and then quickly flowing out of the exhaust pipe 52. Pre-selectively, the height of the exhaust chamber 51 is the same as the height of the dust gas receiving chamber, so that the air entering from the dust collection mechanism can first fill the dust collection box 2, then pass through the demisting perforated plate 53 into the exhaust chamber, and then flow out from the exhaust pipe 52. Therefore, during the air movement process, the exhaust chamber 51 can play a pressure equalization role, which is conducive to the rapid and uniform dispersion of dust fed by the dust collection mechanism in the dust gas receiving chamber, thereby achieving a reliable dust dispersion effect.
[0050] During the dispersion of dust and gas, the gas flow rate slows down, thus increasing the time for the dust to combine with water mist. This allows the dust to adsorb enough water mist and fall. The more evenly dispersed dust is also more likely to combine with enough water mist in the dust-gas containment chamber and fall into the impurity removal mechanism 4 below. Therefore, setting the height of the exhaust chamber 51 to be the same as the height of the dust-gas containment chamber can effectively improve the dust separation effect of the alternative fuel dust control device.
[0051] In this embodiment, preferably, the dust collection mechanism includes a dust collection pipe 11 and a dust collection port 12 for collecting dust, wherein the dust collection pipe 11 connects the dust collection port 12 and the dust collection box 2.
[0052] The dust collection port 12 is set towards the alternative fuel discharge port, transfer station, and pretreatment workshop, and is designed as a funnel shape with a large opening, which is conducive to improving the dust collection effect on site.
[0053] The dust collection pipe 11 connects the dust collection port 12 and the dust collection box 2, and is used to send the dust collected by the dust collection port 12 into the dust collection box 2. Preferably, a fan is provided on the dust collection pipe 11 to provide power for the gas flow, so that the gas can move from the dust collection mechanism to the dust collection box 2 and finally be discharged by the exhaust mechanism.
[0054] In this embodiment, preferably, the atomizing spray mechanism includes an air inlet pipe 31, a water inlet pipe 32, and an atomizing nozzle 33 connected to the air inlet pipe 31 and the water inlet pipe 32. The atomizing nozzle 33 is located near the dust collection pipe 11.
[0055] The atomizing nozzle 33 is located inside the dust-containing gas chamber, and is positioned close to the dust collection pipe 11. This ensures that the dust flowing out of the dust collection pipe 11 comes into contact with the water mist sprayed from the atomizing nozzle 33, and the dust concentration in space is also relatively high at this time. Preferably, the atomizing nozzle 33 is positioned corresponding to the outlet of the dust collection pipe 11, which further increases the efficiency of water mist contact with dust. During its movement, the water mist comes into contact with and adheres to the dust. After absorbing a sufficient amount of water mist, the dust falls onto the impurity removal mechanism 4 below.
[0056] Therefore, the atomizing nozzle 33 is positioned close to the dust pipe 11, which can extend the contact distance between the water mist and the dust, and also improve the contact efficiency between the water mist and the dust, which is beneficial to improving the dust separation effect of the alternative fuel dust control device.
[0057] Multiple atomizing nozzles 33 are installed inside the dust-laden gas containment chamber. Dust particles that have not absorbed sufficient water mist continue to move forward and diffuse during their movement. During this movement and diffusion, the dust particles combine with the water mist continuously sprayed from the atomizing nozzles 33. As the amount of combined water mist increases, the dust particles eventually fall off. Furthermore, the multiple atomizing nozzles 33 can completely cover the dust-laden gas containment chamber, dispersing the water mist to all areas within the chamber, ensuring that dust particles everywhere combine with the water mist and ultimately fall off. Therefore, installing multiple atomizing nozzles 33 improves the dust separation efficiency of the alternative fuel dust control device.
[0058] In this embodiment, preferably, the atomizing nozzle 33 is located at the top of the dust collection box 2.
[0059] The atomizing nozzle 33 is located at the top of the dust collection box 2. After the water mist is sprayed out, it will have a certain initial downward velocity. This water mist with the initial downward velocity will push the dust downward, so that the dust can fall onto the cleaning mechanism 4 below more quickly.
[0060] In this embodiment, preferably, a plurality of atomizing nozzles 33 are provided along the direction from the dust collection pipe 11 to the demisting perforated plate 53.
[0061] Since the gas moves from the dust collection pipe 11 to the exhaust chamber 51, multiple atomizing nozzles 33 arranged along the direction from the dust collection pipe 11 to the demisting perforated plate 53 can capture dust to the greatest extent.
[0062] Preferably, multiple rows of atomizing nozzles 33 can be provided so that the diffused dust can still be effectively captured by the atomizing nozzles 33.
[0063] In this preferred embodiment, the dust collection box 2 further includes a water receiving pool 6, which is located below the impurity removal mechanism 4, and the impurity removal mechanism 4 and the water receiving pool 6 are connected through an impurity removal perforated plate 41.
[0064] The dust removal mechanism 4 and the water collection tank 6 are connected by a perforated dust removal plate 41. Dust particles with water mist adhering to them fall onto the dust removal mechanism 4. Similarly, water mist that is not bound to dust will fall into the dust removal mechanism 4 below under the influence of gravity. Therefore, the water content on the dust removal mechanism 4 is relatively high. By setting up the perforated dust removal plate 41, the dust removal mechanism 4 can be drained, allowing the water in the dust particles on the perforated dust removal plate 41 to continuously fall into the water collection tank 6 below.
[0065] After the water in the impurity removal mechanism 4 is drained out, on the one hand, the impurity removal mechanism 4 can increase the dust holding capacity of the impurity removal mechanism 4 and reduce the frequency of replacement of the impurity removal mechanism 4. On the other hand, due to the reduction of water, when replacing the impurity removal mechanism 4, the water flowing inside the impurity removal mechanism 4 is reduced, making the replacement more convenient and smoother.
[0066] A drain outlet is provided at the lowest point of the water receiving tank 6, allowing water in the tank 6 to be drained and reused via a drain pipe. Preferably, a filter 61 is installed on the drain pipe to achieve a filtration function, preventing dust and other impurities in the water from clogging the pipe.
[0067] In this embodiment, preferably, the impurity removal mechanism 4 is configured as a drawer type.
[0068] Setting the miscellaneous mechanism 4 as a drawer type can improve the overall strength of the miscellaneous mechanism 4 and make it easier to maintain the stability of the structural shape during the replacement of the miscellaneous mechanism 4.
[0069] Moreover, by setting up this pull-out disassembly method, the replacement is made simpler. The miscellaneous mechanism 4 can be directly pulled out and another spare miscellaneous mechanism 4 can be installed to complete the disassembly of the miscellaneous mechanism 4, which saves a lot of time. In theory, online replacement and continuous production can be achieved.
[0070] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.
[0071] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
[0072] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A device for replacing fuel dust management, characterized in that, It includes a dust collection mechanism, a dust collection box (2), an atomizing spray mechanism and a cleaning mechanism (4). The dust collection box (2) is sealed. The dust collection mechanism is connected to the dust collection box (2) to collect dust from the site into the dust collection box (2). The dust collection box (2) is equipped with an atomizing spray mechanism to spray water mist into the dust collection box (2). The cleaning mechanism (4) is located at the bottom of the dust collection box (2) to receive moist dust. The impurity removal mechanism (4) is detachably connected to the dust collection box (2).
2. The alternative fuel dust management device of claim 1, wherein, The alternative fuel dust control device also includes an exhaust mechanism for discharging the gas inside the dust collection box (2).
3. The alternative fuel dusting management device of claim 2, wherein, The exhaust mechanism includes an exhaust chamber (51) and an exhaust pipe (52) connected to the exhaust chamber (51). The exhaust pipe (52) is used to exhaust the air in the exhaust chamber (51). The exhaust chamber (51) is connected to the dust collection box (2) through a demisting perforated plate (53). The exhaust chamber (51) is configured to have a height.
4. The alternative fuel dusting management device of claim 3, wherein, The dust collection mechanism includes a dust collection pipe (11) and a dust collection port (12) for collecting dust. The dust collection pipe (11) connects the dust collection port (12) and the dust collection box (2).
5. The alternative fuel dust control device according to claim 4, characterized in that, The atomizing spray mechanism includes an air inlet pipe (31), a water inlet pipe (32), and an atomizing nozzle (33) connected to the air inlet pipe (31) and the water inlet pipe (32). The atomizing nozzle (33) is located near the dust collection pipe (11).
6. The alternative fuel dusting management device of claim 5, wherein, The atomizing nozzle (33) is located on top of the dust collection box (2).
7. The alternative fuel dusting management device of claim 6, wherein, Multiple atomizing nozzles (33) are provided along the direction from the dust collection pipe (11) toward the demisting perforated plate (53).
8. The alternative fuel dusting control device of claim 1, wherein, The dust collection box (2) also includes a water receiving pool (6), which is located below the impurity removal mechanism (4). The impurity removal mechanism (4) and the water receiving pool (6) are connected through an impurity removal perforated plate (41).
9. The alternative fuel dusting management device of claim 1, wherein, The impurity removal mechanism (4) is set as a drawer type.