Rigid filter material high-temperature-resistant anti-drag dust remover and method

Abstract

The invention discloses a rigid filter material high-temperature-resistant anti-drag dust remover and a method, and belongs to the technical field of high-temperature dust-containing gas purification. The dust remover comprises a rigid porous dust removal filter bag which adopts a semicircular section design, the rigid porous dust removal filter bag is connected to a pulse dust removal rod through a quick-release connecting piece, the dust remover has an online pulse vibration dust removal function, and the rigid porous dust removal filter bag adopts a detachable structure, so that the dust remover is suitable for replacement and daily maintenance of different dust-containing airflows; the rigid porous dust removal filter bag is made of iron-based high-temperature alloy, cobalt-based high-temperature alloy and the like and can be selected according to different dust removal working conditions, the temperature resistance reaches 800-1200 DEG C, and the instantaneous temperature resistance reaches 1600-2700 DEG C. And the dust removal devices are arranged in the dust removal box body in a semicircular and crossed staggered arrangement manner, so that the service life is prolonged. The device has the remarkable advantages of efficient dust removal, resistance reduction, energy conservation, high temperature resistance, corrosion resistance, good adaptability, simple structure, convenience in disassembly and replacement, long service life and the like. The device is suitable for high-temperature, high-dust-concentration and corrosive industrial flue gas treatment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of industrial dust removal, and particularly relates to a rigid filter material high-temperature-resistant and drag-reducing dust remover and method. BACKGROUND

[0002] The existing bag-type dust remover is widely applied to industrial flue gas treatment due to its high dust capture capacity (PM2.5 capture efficiency > 99.9%) and low emission concentration (< 10 mg / m³). The filter bag of the traditional dust removal is usually made of organic or inorganic fiber materials (such as PTFE, PPS, PET or glass fiber), and the temperature resistance range is usually 150-260℃, and the instantaneous temperature resistance can reach 280℃. However, in the super-high temperature (> 800℃) or strong corrosive environment, the fiber dust filter bag is easy to age and break, and the service life is relatively short (12-18 months). In recent years, metal fiber filter materials (such as stainless steel fiber felt, iron-chromium-aluminum alloy fiber) begin to be applied to high-temperature dust removal scenes due to their good high-temperature resistance and corrosion resistance, but there are still the following problems.

[0003] The existing technical problems are as follows: (1) high resistance: the traditional metal fiber filter material lacks rigid support, is usually fixed on a circular or circular-shaped filter cylinder framework, and has a dense two-dimensional flat structure, so that the filter material aperture is too small to ensure the dust removal effect, and the system resistance is as high as 1500-2000 Pa, and the fan energy consumption increases. (2) Difficulty in dust removal: the metal fiber filter material has a small surface aperture, strong dust adhesion, low dust removal efficiency, frequent dust removal (such as once every 4-6 hours) leads to increased energy consumption and accelerated filter material wear. (3) Temperature resistance limitation: the existing metal fiber filter material is easy to oxidize or sinter under super-high temperature (> 800℃) or severe temperature fluctuation, which leads to filter material adhesion and reduces the overall strength of the filter bag. (4) Low space utilization: the traditional metal fiber filter material has a two-dimensional surface structure, relies on inertial collision and contact resistance for dust removal, and cannot fully utilize the axial viscous resistance capture effect of the porous layer. In addition, the filter bag is usually circular and arranged compactly, which leads to low space utilization, large equipment volume, and increased manufacturing and maintenance costs. (5) Poor flow field stability: the metal fiber filter material is a flexible material, which is easy to plastically deform under the continuous impact of the dust-containing gas flow, changes the original flow field around the filter bag, causes local dust accumulation, and leads to a sharp decrease in the dust removal effect with the increase of the use time, and the "dead plugging" phenomenon occurs under the long-time scouring of the dust-containing gas flow. (6) Complex processing: the metal fiber is difficult to process into a porous structure with a suitable porosity, and the processing difficulty and cost of the traditional circular or flat design are high. (7) Difficult to disassemble and replace: the traditional metal fiber filter bag has an integrated structure of the whole sintering, low flexibility, high difficulty in overall replacement, high labor cost, and is difficult to disassemble, maintain and replace the filter material damaged alone, and cannot replace the filter material more suitable for the dust-containing gas flow at any time.

[0004] To this end, a rigid filter material high-temperature resistant drag-reducing dust collector and method are provided. SUMMARY

[0005] The present application aims at solving the problems in the background art, and provides a rigid filter material high-temperature resistant drag-reducing dust collector and method.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: A rigid filter material high-temperature resistant drag-reducing dust collector comprises a dust removal box body, a dust gas inlet, a clean gas outlet, a dust hopper, a dust outlet and a manual dust cleaning pipe, and further comprises a protective cover, a pulse dust cleaning rod, a pulse motor, a rigid porous dust removal filter bag, a control instrument and a hollow plate; the number of the pulse dust cleaning rod, the pulse motor and the rigid porous dust removal filter bag is multiple; the lower part of the dust removal box body is provided with the hollow plate, multiple pulse dust cleaning rods are vertically inserted on the hollow plate in sequence, the upper end of the pulse dust cleaning rod is connected with the corresponding pulse motor, the upper part of the dust removal box body is provided with the protective cover, and multiple pulse motors are arranged in the protective cover; one rigid porous dust removal filter bag is connected to each pulse dust cleaning rod through a quick release connector; the control instrument is arranged on the outer wall of the box body on one side of the lower part of the dust removal box body, and is electrically connected with each group of corresponding pulse motors through a grouping control module in the control instrument.

[0007] Further, the cross section of the rigid porous dust removal filter bag is semicircular, and the rigid porous dust removal filter bag is arranged in the dust removal box body in a staggered arrangement mode.

[0008] Further, the rigid porous dust removal filter bag is made of iron-based high-temperature alloy, cobalt-based high-temperature alloy or silicon carbide composite material.

[0009] Further, the outer surface of the rigid porous dust removal filter bag is provided with a composite ceramic or nano-carbon coating.

[0010] Further, the pulse dust cleaning rod is provided with a connecting protrusion, the connecting protrusion is matched with a connecting groove on the rigid porous dust removal filter bag, and the connecting protrusion and the connecting groove form the quick release connector.

[0011] Further, the hollow plate is of a detachable structure.

[0012] Further, the dust removal box body is communicated with the clean gas outlet and the dust gas inlet at the left and right ends, and is communicated with the dust hopper at the lower end.

[0013] Further, the dust hopper is provided with a dust outlet, and an electric dust unloading valve is arranged at the upper end of the dust outlet.

[0014] Further, an artificial dust cleaning pipe is arranged on one side of the ash bucket.

[0015] The application also provides a dust removal method based on the rigid filter material high-temperature-resistant and drag-reducing dust remover. After the dust-containing gas enters the dust removal box through the dust gas inlet, the dust is captured and accumulated on the surface of the rigid porous dust removal filter bag through the staggered arrangement of the rigid porous dust removal filter bag, and the purified dust-containing gas is discharged from the clean gas outlet to the atmosphere. When the surface dust of the rigid porous dust removal filter bag is serious and needs to be cleaned regularly, the rigid porous dust removal filter bag is riveted on the pulse dust cleaning rod through the quick release connector, and the pulse motor is started by the control group through the setting of the control instrument, and the pulse dust cleaning rod is vibrated at a frequency range of 100-300 Hz, and the rigid porous dust removal filter bag riveted on the pulse dust cleaning rod is vibrated, and the dust on the rigid porous dust removal filter bag is vibrated and cleaned, and the dust falling down is collected in the ash bucket, and finally the dust is collected and treated through the electric ash unloading valve.

[0016] Compared with the prior art, the rigid filter material high-temperature-resistant and drag-reducing dust remover provided by the application has the following beneficial effects: The application adopts the rigid porous dust removal filter bag with a specific thickness and a rigid semicircular section, and combines gradient filter material, ceramic or nano carbon coating and cross staggered arrangement design, so that the internal space of the dust remover is more efficiently and fully utilized, and the weight of the dust remover is greatly reduced and the internal resistance is significantly reduced.

[0017] In terms of operation mechanism, the pulse motor drives the pulse dust cleaning rod to vibrate at a high frequency, and then drives the rigid porous dust removal filter bag riveted thereto, so that online dust cleaning operation can be realized, the filter can be replaced at any time without shutdown, the dust cleaning efficiency is greatly improved, and the filtering effect during operation can be maintained at a high level. The porous structure of the rigid porous dust removal filter bag has small pore size, high porosity and excellent hardness and rigidity characteristics, can effectively capture dust particles with a particle size of 0.1 mu m or more, and can withstand high-strength vibration and airflow impact, and is suitable for one-time treatment of large-flow dust-containing gas.

[0018] Compared with the traditional flexible filter bag, the rigid porous dust removal filter bag adopted by the application has good supporting capacity, so the bag cage for supporting can be omitted; at the same time, the non-uniform arrangement design of the filter bag further optimizes the utilization rate of the overall space, increases the number of filter bags in the limited space, and thus improves the dust removal efficiency. In addition, since the porous filter material with a specific thickness is a rigid material, it is not easy to deform plastically, so the stability of the flow field around the rigid porous dust removal filter bag can be ensured, the local dust accumulation phenomenon can be reduced, and the stability of the airflow organization in the dust remover can be enhanced.

[0019] It is worth noting that the rigid porous dust removal filter bag and the pulse cleaning rod adopt quick release connection design, which can be disassembled at the hollowed plate at the bottom of the dust remover, realizing the disassembly of the rigid porous dust removal filter bag with use, adapting to different dust removal conditions, and facilitating the operation and maintenance in the later period. The dust remover is suitable for high temperature and high corrosion environment such as thermal power, metallurgy and garbage incineration, and has the advantages of high efficiency dust removal, energy saving and emission reduction and strong economy.

[0020] The rigid porous dust removal filter bag for dust removal in high temperature and high corrosion environment realizes stable operation under super-high working temperature by selecting iron-based high-temperature alloy, cobalt-based high-temperature alloy or silicon carbide rigid composite material, combining with gradient filter material structure design, and setting composite ceramic or nano carbon coating on the outer surface of the filter material. The above-mentioned comprehensive measures endow the filter bag with excellent wear resistance and corrosion resistance, significantly prolonging the service life of the main structure. At the same time, by designing the cross section of the rigid porous dust removal filter bag as a semicircle and adopting an intersecting arrangement scheme, the weight of the present application is effectively reduced, the stability of the airflow organization near the rigid porous dust removal filter bag is optimized, the total resistance and turbulent dissipation rate of the present application are reduced, and then the dust capture efficiency and filtration efficiency are improved, meeting the harsh dust removal demand under high temperature and high corrosion condition. In addition, the inlet part of the dust containing gas flow of the dust removal box body adopts a large space hopper design, which can make the dust containing gas flow quickly decelerate before reaching the dust removal box body, ensuring the uniform distribution of dust particles in the cross section of the rigid porous dust removal filter bag, so as to fully play the filtering efficiency of the rigid porous layer. The clean gas outlet at the tail of the dust removal box body adopts a contraction design, which accelerates the speed of the outlet clean gas flow, effectively improving the dust removal amount per unit time. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described in detail below with reference to the accompanying drawings.

[0022] Figure 1 is a side view structural schematic diagram of the present application; Figure 2 is a bottom view structural schematic diagram of the present application; Figure 3 is a top view structural schematic diagram of the present application; Figure 4 is a structural schematic diagram of the inside of the present application; Figure 5 is a layout schematic diagram of the pulse motor of the present application; Figure 6 is a layout schematic diagram of the rigid porous dust removal filter bag of the present application; Figure 7 is Figure 6 a detailed schematic diagram of the riveting structure of the rigid porous dust removal filter bag and the pulse cleaning rod; Figure 8is the structure diagram of the installation relationship of the hollow plate of the present application with the rigid porous dust removal filter bag and the pulse dust cleaning rod; The figure marks: 1, protective cover; 2, pulse dust cleaning rod; 2-1, connecting protrusion; 3, pulse motor; 4, rigid porous dust removal filter bag; 4-1, connecting groove; 5, dust removal box body; 6, dust gas inlet; 7, clean gas outlet; 8, control instrument; 9, electric ash unloading valve; 10, hollow plate; 11, ash hopper; 12, dust outlet; 13, manual dust cleaning pipe; 14, quick release connecting piece; 15, support frame. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer and more obvious, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings and embodiments.

[0024] As shown in Figures 1 to 5 and Figure 8 , a rigid filter material high-temperature-resistant drag-reducing dust remover comprises a dust removal box body 5, a dust gas inlet 6, a clean gas outlet 7, an ash hopper 11, a dust outlet 12 and a manual dust cleaning pipe 13, and further comprises a protective cover 1, a pulse dust cleaning rod 2, a pulse motor 3, a rigid porous dust removal filter bag 4, a control instrument 8 and a hollow plate 10; the number of the pulse dust cleaning rod 2, the pulse motor 3 and the rigid porous dust removal filter bag 4 is multiple; as shown in Figure 5 , the lower part of the dust removal box body 5 is provided with the hollow plate 10, multiple pulse dust cleaning rods 2 are vertically inserted in sequence on the hollow plate 10, the upper end of the pulse dust cleaning rod 2 is connected with the respective pulse motor 3, the upper part of the dust removal box body 5 is provided with the protective cover 1, and multiple pulse motors 3 are arranged in the protective cover 1; the pulse motor 3 drives the pulse dust cleaning rod 2 to vibrate.

[0025] Preferably, the hollow plate 10 is horizontally fixed at the lower part of the dust removal box body 5, and multiple pulse dust cleaning rods 2 are inserted in sequence and uniformly in the holes of the hollow plate 10. As shown in Figure 7 , one rigid porous dust removal filter bag 4 is connected to each pulse dust cleaning rod 2 through a quick release connecting piece 14; the control instrument 8 is arranged on the outer wall of the box body on one side of the lower part of the dust removal box body 5, and is electrically connected with each group of corresponding pulse motors 3 through the grouping control module inside the control instrument 8. The control instrument 8 has a grouping control module inside and can control in sequence, such as a ForEach controller, which belongs to the prior art and will not be described in detail here.

[0026] Further, as shown in Figure 6 , the cross section of the rigid porous dust removal filter bag 4 is semicircular, and the rigid porous dust removal filter bags 4 are arranged in a staggered arrangement mode inside the dust removal box body 5.

[0027] Further, the rigid porous dust removal filter bag 4 is made of iron-based superalloy, cobalt-based superalloy or silicon carbide composite material.

[0028] The iron-based superalloy is a material with certain strength and oxidation resistance and gas corrosion resistance at high temperature; for example, the work-hardening type austenitic heat-resistant steel represented by the American brand 16-25-6 (Fe-25Ni-16Cr-6Mo), and other domestic types, not limited to the above, which is a prior art and can be directly purchased.

[0029] The cobalt-based superalloy is an austenitic superalloy containing 40-65% of cobalt by mass. It has certain high-temperature strength, good hot corrosion resistance and oxidation resistance under high-temperature conditions. Cobalt-based superalloys include: Hayness188, Haynes25 (L-605), Alloy S-816, UMCo-50, MP-159, FSX-414, X-40, Stellite6B, GH5188 (GH188), GH159, GH605, K640, DZ40M, etc.; not limited to the above, which is a prior art and can be directly purchased.

[0030] Further, the temperature resistance range of the rigid porous dust removal filter bag 4 is 800-1200℃, and the instantaneous temperature resistance can reach 1600-2700℃.

[0031] Further, the rigid porous dust removal filter bag 4 is provided with a plurality of small holes, the hole diameter is 20-60μm, preferably 60μm, and the filter bag thickness of the rigid porous dust removal filter bag 4 is 60-120mm, preferably 100mm.

[0032] Further, the outer surface of the rigid porous dust removal filter bag 4 is provided with a composite ceramic or nano-carbon coating.

[0033] Further, as shown in Figure 6 The pulse cleaning rod 2 is provided with a high-temperature-resistant and drag-reducing dust remover 2-1 connected to the rigid filter material, and the connecting protrusion 2-1 is matched with the groove 4-1; the connecting protrusion 2-1 and the connecting groove 4-1 form a quick-release connecting piece 14.

[0034] The composite ceramic material is mainly composed of a ceramic matrix material and a reinforcing phase, and has the advantages of high strength, high hardness, high temperature resistance and the like of the ceramic material, and the advantages of high toughness, thermal shock resistance and oxidation resistance brought by the reinforcing phase. Compared with traditional ceramic materials, the composite ceramic material has higher strength, toughness and thermal shock resistance. Traditional ceramic materials are brittle and easy to break; due to the presence of the reinforcing phase, the composite ceramic material can effectively prevent crack propagation, thereby improving the toughness and strength. The high temperature resistance and oxidation resistance of the composite ceramic material are also better than those of traditional ceramic materials. The ceramic matrix material is the main part of the composite ceramic material, and common ceramic matrix materials include alumina, silicon nitride, silicon carbide, zirconia and the like. The reinforcing phase is a component that plays a reinforcing role in the composite ceramic material, which can be a fiber, a particle, a whisker or a nanomaterial, and is a material that can be directly purchased.

[0035] Preferably, the connecting protrusion 2-1 of the pulse cleaning rod 2 is a reverse trapezoidal convex structure, and the connecting groove 4-1 on the rigid porous dust removal filter bag 4 is a corresponding trapezoidal concave structure. The length of the connecting protrusion 2-1 is slightly shorter than the length of the pulse cleaning rod 2, and the connecting groove 4-1 is located at the semicircular center point of the rigid porous dust removal filter bag 4 and has a length corresponding to the length of the connecting protrusion 2-1. When installing or dismounting, the rigid porous dust removal filter bag 4 can be simply slid into the corresponding concave-convex opening position from the lower part of the pulse cleaning rod 2.

[0036] The rigid porous dust removal filter bag 4 adopts a rigid semicircular cross-section porous medium filter bag with a specific thickness, and combines with a gradient filter material (the gradient filter material refers to a process for processing a porous layer, that is, the porous layer close to the inner wall of the rigid porous dust removal filter bag 4 is made more dense, and the porous layer close to the outer part of the tube is made more sparse.) Further, the hollow plate 10 is a detachable structure. The installation and replacement of the rigid porous dust removal filter bag 4 are facilitated.

[0037] Further, the control instrument 8 starts the pulse motor 3 in a grouping order to drive the pulse cleaning rod 2 to vibrate at a high frequency, thereby realizing online cleaning.

[0038] Further, as shown in Figure 1 and Figure 5 , the dust removal box body 5 is connected with a clean gas outlet 7 and a dust gas inlet 6 at left and right ends, and is connected with a dust hopper 11 at a lower end.

[0039] Preferably, the dust gas inlet 6 and the clean gas outlet 7 are in the shape of a bucket, each having a large port and a small port. The large ports of the clean gas outlet 7 and the dust gas inlet 6 are fixedly connected together with the corresponding side surfaces of the dust removal box body 5, the small port of the clean gas outlet 7 serves as an outlet, and the small port of the dust gas inlet 6 serves as an inlet. The small port is in the shape of a circle or a rectangle, or can be in other shapes.

[0040] Further preferably, the dust gas inlet 6 adopts a large space hopper design, and the large port size is slightly smaller than the size of the side wall of the dust removal box 5. The dust-containing gas flow can be quickly decelerated before reaching the filter box, ensuring uniform distribution of dust particles in the rigid porous dust removal filter bag 4 section in the dust removal box 5, so as to fully exert the filtering efficiency of the rigid porous layer. The clean gas outlet 7 at the tail of the dust remover of the application adopts a contraction design, which accelerates the speed of the outlet clean gas flow and effectively improves the dust removal amount per unit time.

[0041] Further, as shown in Figure 1 The hopper 11 is provided with a dust outlet 12, and an electric dust unloading valve 9 is arranged at the upper end of the dust outlet 12 for controlling the opening and closing of the dust outlet 12.

[0042] Further, an artificial dust cleaning pipe 13 is arranged on one side of the hopper 11.

[0043] Preferably, the artificial dust cleaning pipe 13 is located above the dust outlet 12 and is arranged horizontally on the side of the hopper 11. When the hopper cannot completely unload dust when processing a large amount of dust, the artificial dust cleaning pipe 13 is used to manually clean the accumulated large amount of dust, and sometimes it can also be used for maintenance.

[0044] Further, the pulse motor 3, the electric dust unloading valve 9 and the control instrument 8 are connected with an external power supply.

[0045] Further, as shown in Figure 1 The rigid filter material high-temperature resistant and drag-reducing dust remover of the application further comprises a support frame 15 fixed below the dust removal box 5 for supporting the dust removal box 5.

[0046] Further, as shown in Figure 1 The protective cover 1 comprises a surrounding baffle and a cover plate arranged above the baffle and capable of being opened and closed.

[0047] The use method of the application is: After the dust-containing gas enters the dust removal box 5 of the application from the dust gas inlet 6, the dust is captured and accumulated on the surface of the rigid porous dust removal filter bag 4 through the staggered rigid porous dust removal filter bag 4, and the dust-containing gas is purified into clean gas meeting the specification requirements and flows out from the clean gas outlet 7 to the atmosphere.

[0048] When the surface dust of the rigid porous dust removal filter bag 4 is serious, the dust removal effect of the dust remover will be affected, so the application adopts regular online dust removal measures, the rigid porous dust removal filter bag 4 is riveted on the pulse dust removal rod 2 through the quick release connector 14, the pulse motor 3 is started in groups through the control instrument 8, the pulse motor 3 drives the pulse dust removal rod 2 to vibrate at high frequency (the high frequency range is 100-300 Hz), and then the rigid porous dust removal filter bag 4 riveted on the pulse dust removal rod 2 is vibrated at high frequency, the dust on the rigid porous dust removal filter bag 4 is vibrated and cleaned, the dust fallen by vibration falls into the dust hopper 11 for collection, and finally the dust is collected and treated through the electric dust unloading valve 9.

[0049] Specifically, considering that the rigid porous dust removal filter bag 4 needs to be fixed, the pulse dust removal rod 2 is inserted into the hollow plate 10 at the bottom of the dust remover box 5 through the pre-set hole (the hollow plate is a detachable structure), then the rigid porous dust removal filter bag 4 is connected to the pulse dust removal rod 2 through the quick release connector 14, and the bottom of the rigid porous dust removal filter bag 4 is placed on the hollow plate 10, so that the rigid porous dust removal filter bag 4 is fixed, and further, during the maintenance process of the filter bag in the later period, the rigid porous dust removal filter bag 4 can be directly removed from the top of the dust remover box 5 for maintenance, so that the structure is simple and convenient for disassembly and maintenance.

[0050] The rigid filter material high-temperature resistance and drag reduction dust remover is suitable for high-temperature, high-dust concentration and corrosive industrial flue gas treatment, the rigid porous dust removal filter bag 4 adopts a semi-circular cross-section design, the rigid porous dust removal filter bag 4 is connected to the pulse dust removal rod 2 through the quick release connector 14, has an online pulse vibration dust removal function, and the rigid porous dust removal filter bag 4 adopts a detachable structure, which is beneficial to replacement and daily maintenance of different dust-containing airflows; the material of the rigid porous dust removal filter bag 4 is an iron-based high-temperature alloy, a cobalt-based high-temperature alloy or a silicon carbide composite material (which can be selected according to different dust removal conditions), and the temperature resistance is up to 800-1200 DEG C, and the instantaneous temperature resistance is 1600-2700 DEG C. Through the streamline fork row and semi-circular arrangement structure, the system resistance can be reduced by 10-20%, the dust removal period can be prolonged by 20-30%, and the service life of the rigid porous dust removal filter bag 4 can be prolonged to 30-36 months. The dust remover of the application optimizes the space utilization rate by 15-25%, the emission concentration is lower than 10 mg / m³, and the ultra-low emission requirement is met. The dust remover is suitable for high-temperature and high-concentration dust industries such as thermal power, metallurgy, chemical industry and waste incineration, has the advantages of high-efficiency dust removal, drag reduction, energy saving, high-temperature resistance, corrosion resistance, good adaptability, simple structure, convenient disassembly and replacement and long service life.

[0051] In the description of the present application, it should be understood that if the orientation or position relationship indicated by the terms "upper", "inner", "lower" and the like is based on the orientation or position relationship shown in the drawings, it does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application.

[0052] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

[0053] The components and structures not described in detail in the present embodiment are common components and common structures or common means in the industry, which are not described one by one here.

Claims

1. A rigid filter media high-temperature drag-reducing dust collector, comprising: The dust collector comprises a dust collection chamber, a dust inlet, a clean air outlet, a dust hopper, a dust outlet, and a manual dust removal pipe. Its features include: a protective cover, pulse cleaning rods, pulse motors, rigid porous dust collector filter bags, a controller, and a perforated plate; the number of pulse cleaning rods, pulse motors, and rigid porous dust collector filter bags is multiple; the perforated plate is located at the lower part of the dust collection chamber, and multiple pulse cleaning rods are vertically inserted into the perforated plate in sequence. The upper end of each pulse cleaning rod is connected to its respective pulse motor. The protective cover is located at the upper part of the dust collection chamber, and multiple pulse motors are housed within the protective cover; each pulse cleaning rod is connected to a rigid porous dust collector filter bag via a quick-release connector; the controller is located on the outer wall of the lower side of the dust collection chamber and is electrically connected to each corresponding pulse motor according to the group control modules inside the controller.

2. The rigid filter media high-temperature drag-reducing dust collector according to claim 1, characterized in that: The rigid porous dust collector filter bag has a semi-circular cross-section and is arranged in a staggered manner inside the dust collector box.

3. A rigid filter media high-temperature drag-reducing dust collector according to claim 2, characterized in that: The rigid porous dust collector filter bag is made of iron-based high-temperature alloy, cobalt-based high-temperature alloy or silicon carbide composite material.

4. A rigid filter media high-temperature drag-reducing dust collector according to claim 3, characterized in that: The outer surface of the rigid porous dust collector filter bag is coated with a composite ceramic or nano-carbon coating.

5. A rigid filter media high-temperature drag-reducing dust collector according to claim 2, characterized in that: The pulse cleaning rod is provided with a connecting protrusion, which cooperates with the connecting groove on the rigid porous dust collector filter bag. The connecting protrusion and the connecting groove form a quick-release connector.

6. A rigid filter media high-temperature drag-reducing dust collector according to claim 2, characterized in that: The perforated plate is a detachable structure.

7. A rigid filter media high-temperature drag-reducing dust collector according to any one of claims 1-6, characterized in that: The dust collector is connected to a clean air outlet and a dust inlet at its left and right ends, and to a dust hopper at its lower end.

8. A rigid filter media high-temperature drag-reducing dust collector according to claim 7, characterized in that: The ash hopper is equipped with a dust outlet, and an electric ash discharge valve is installed at the upper end of the dust outlet.

9. A rigid filter media high-temperature drag-reducing dust collector according to claim 8, characterized in that: A manual ash cleaning pipe is installed on one side of the ash hopper.

10. A dust removal method for a rigid filter media high-temperature drag-reducing dust collector according to claim 8 or 9, characterized in that: The specific steps are as follows: After the dust-laden gas enters the dust collection chamber through the dust gas inlet, it passes through the rigid porous dust collection filter bags arranged in an alternating pattern. The dust is captured and accumulated on the surface of the rigid porous dust collection filter bags. The dust-laden gas is purified into clean gas that meets the specifications and flows out from the clean gas outlet to be discharged into the atmosphere. When the surface of the rigid porous dust collector filter bag is heavily dusty and requires periodic online cleaning, the rigid porous dust collector filter bag is riveted to the pulse cleaning rod using quick-release connectors. By setting the controller, the pulse motor is periodically started via control groups. The pulse motor drives the pulse cleaning rod to vibrate at a frequency range of 100~300 Hz, which in turn causes the rigid porous dust collector filter bag riveted to the pulse cleaning rod to vibrate and clean the dust accumulated on the rigid porous dust collector filter bag. The dust that is vibrated off falls into the dust hopper for collection, and finally, the dust is collected and processed through an electric dust discharge valve.

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