CN114931857A - Denitration catalyst magnetic suction pneumatic vibration ash removal device and method - Google Patents
Denitration catalyst magnetic suction pneumatic vibration ash removal device and method Download PDFInfo
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- CN114931857A CN114931857A CN202210760674.6A CN202210760674A CN114931857A CN 114931857 A CN114931857 A CN 114931857A CN 202210760674 A CN202210760674 A CN 202210760674A CN 114931857 A CN114931857 A CN 114931857A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Abstract
The invention discloses a denitration catalyst magnetic pneumatic vibration ash removal device and a method, wherein the device comprises an induced air channel, an air supply channel, an ash removal room, a control unit, a catalyst unit and a magnetic pneumatic vibration unit; the denitration catalyst module in the catalyst unit is arranged in the catalyst module shell and then placed on a support base, the support base is fixed on a base, and the base is of a cavity structure; the induced air passageway is connected with the ash removal roof portion, and the air supply passageway is linked together through ash removal roof bottom and base, and the pneumatic vibration unit setting of magnetism is inhaled on catalyst module casing, and the control unit is inhaled pneumatic vibration unit communication with magnetism and is connected. The method has the advantages that the hardened fly ash in the catalyst pore channel is vibrated down, meanwhile, the fly ash entrained between the interlayers of the denitration catalyst module has a good loosening effect, the blown fly ash is output by the induced air channel through the blowing air entering through the air supply pipeline, the cleaning effect of the hardened fly ash in the pore channel of the denitration catalyst module is improved, the ash cleaning efficiency is improved, and the ash cleaning time is shortened.
Description
Technical Field
The invention belongs to the field of atmospheric pollutant treatment, and relates to a magnetic pneumatic vibration ash removal device and method for a denitration catalyst.
Background
The SCR denitration catalyst regeneration technology is a technology which is mature day by day, and the technical principle is to eliminate the adverse factors accumulated in the long-term operation process of the denitration catalyst, supplement the active substances of the catalyst, improve the chemical activity of the catalyst and enable the catalyst to meet the reuse requirement. The regeneration of the denitration catalyst generally comprises the processes of physical ash removal, wet ash removal, medicament cleaning, ultrasonic cleaning, rinsing with clear water, drying, activation loading, high-temperature calcination, inspection packaging and the like, wherein the physical ash removal is an important link in the regeneration process of the denitration catalyst.
The efficient physical ash removal process has an important influence on the subsequent links of catalyst regeneration. The larger the ash removal amount of the physical ash removal link is, the less the ash amount subsequently entering the cleaning water tank is, and the less the water amount, time and medicament consumption amount are used for cleaning. Fly ash which is not removed in the link enters a subsequent cleaning tank, and sludge is formed through the processes of cleaning, precipitation, filter pressing and the like. The sludge generated in the regeneration process of the catalyst belongs to dangerous waste and can cause secondary pollution, and the treatment cost is about 4000 yuan/ton. Therefore, the high-efficiency physical ash removal process not only has higher economic benefit, but also has obvious environmental benefit.
Currently, commonly used physical cleaning methods include: the method has good cleaning effect on looser fly ash on the surface of the catalyst and in the pore canal, but has poor effect on treating the fly ash in a hardened state in the pore canal of the catalyst. Secondly, the dust collector sucks dust under negative pressure, the method can suck the fly ash on the surface of the catalyst and in gaps, has better effect of preventing fly ash from diffusing, but has no obvious effect on the hardened fly ash. And thirdly, poking ash by using a mechanical tool, and penetrating into the catalyst pore channel by using tools such as a thin and long metal wire or a drill bit to perform reciprocating rotary cleaning, so that the fly ash in a plate-knot state has a good cleaning effect, but the catalyst is easy to damage due to the thin and weak inner wall of the catalyst. Meanwhile, each catalyst module has about 15000-35000 pore channels, so that the operation is time-consuming and labor-consuming. And fourthly, manually shoveling ash, namely shoveling the accumulated ash on the metal shell of the catalyst by using a metal shovel, mainly used for cleaning the ash on the outer surface of the metal frame of the catalyst, and incapable of cleaning the accumulated ash in the pore channel.
Disclosure of Invention
The invention aims to solve the problem that fly ash in a plate-bonded state in a catalyst duct can not be effectively cleaned in time in the prior art, and provides a magnetic suction pneumatic vibration ash removal device and a magnetic suction pneumatic vibration ash removal method for a denitration catalyst.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a magnetic pneumatic vibration ash removal device for a denitration catalyst comprises an induced air channel, an air supply channel, an ash removal room, a control unit, a catalyst unit and a magnetic pneumatic vibration unit;
the denitration catalyst module is arranged in the catalyst module shell and then placed on the supporting base, the supporting base is fixed on the base, and the base is of a cavity structure;
the induced air channel is connected with the top of the ash removal room, the air supply channel is communicated with the base through the bottom of the ash removal room, the magnetic suction pneumatic vibration unit is arranged on the catalyst module shell, and the control unit is in communication connection with the magnetic suction pneumatic vibration unit.
The invention is further improved in that:
a buffer is arranged between the supporting base and the base and is arranged on the base through a fastener.
The denitration catalyst module is a honeycomb catalyst or a plate-type catalyst.
The buffer is a rubber buffer or a spring buffer.
The induced air channel comprises an induced air pipe, a round square induced air pipe and a rectangular induced air pipe which are sequentially connected, the rectangular induced air pipe is connected with the top of the ash removal room, and an induced air fan is further arranged in the induced air pipe.
The air supply channel comprises an air supply pipe, a three-way pipe, a round square-changing air supply pipe and a rectangular air supply pipe, the air supply pipe is divided into two paths after being connected with the three-way pipe, the two paths are connected to the two sides of the ash removal room through the round square-changing air supply pipe, the two sides of the base are respectively connected through the rectangular air supply pipe, and an air supply blower is further arranged in the air supply pipe.
Rectangular air supply outlets are formed in two sides of the base, and the rectangular air supply pipes are communicated with the base through the rectangular air supply outlets.
The ash removal room comprises an ash removal roof, an ash removal room outer wall, an ash removal room bottom plate and an operation door, the ash removal roof, the ash removal room outer wall and the ash removal room bottom plate form a closed structure, and the operation door is opened on the ash removal room outer wall.
The magnetic attraction pneumatic vibration unit comprises a magnetic attraction base, a pneumatic vibrator and a magnetic attraction coil, the pneumatic vibrator and the magnetic attraction base are fixedly installed through a fastener, a coil groove is formed in the magnetic attraction base, and a plurality of turns of magnetic attraction coils are distributed in the coil groove.
A magnetic pneumatic vibration dedusting method for a denitration catalyst comprises the following steps:
installing a denitration catalyst module into an ash removal room;
arranging a plurality of magnetic pneumatic vibration units on the catalyst module shell;
opening switches of a blower, an induced draft fan and a pneumatic vibrator;
the pneumatic vibrator makes the hardened fly ash in the pore channel of the denitration catalyst module fall off through vibration;
the blowing air vertically flows upwards after entering the base through the air supply channel and passes through the denitration catalyst module, and the fly ash is output through the induced air channel.
Compared with the prior art, the invention has the following beneficial effects:
through set up magnetism on denitration catalyst module and inhale pneumatic vibration unit, shake the inside fly ash that hardens of catalyst pore and fall, have better loose effect to the fly ash of smuggleing secretly between the denitration catalyst module intermediate layer simultaneously, then sweep the fly ash that the air will drop through the admission line entering and export by induced air passageway, the effectual clearance effect that has promoted the fly ash that hardens in the denitration catalyst module pore has improved deashing efficiency, has shortened the deashing time.
Further, a closed structure is formed by the ash removal roof, the outer wall of the ash removal room and the bottom plate of the ash removal room, and a blower and a draught fan form micro negative pressure in the closed structure formed by the ash removal room, so that fly ash can be effectively prevented from escaping.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a structural diagram of a magnetic suction pneumatic vibration ash removing device for a denitration catalyst of the present invention;
FIG. 2 is a front structural view of the magnetically-attracted pneumatic vibration ash removal device for denitration catalyst of the present invention;
FIG. 3 is a longitudinal sectional view of the magnetically-attracted pneumatic vibration ash handling device for denitration catalysts of the present invention;
FIG. 4 is a transverse sectional view of the magnetically-attracted pneumatic vibration ash handling equipment for denitration catalyst of the present invention;
FIG. 5 is a schematic view of a magnetic pneumatic vibration unit according to the present invention;
FIG. 6 is a cross-sectional view of the magnetic pneumatic vibration unit of the present invention.
Wherein: 1-an induced draft tube, 2-a round and square induced draft tube, 3-a rectangular induced draft tube, 4-an ash removal roof, 5-an ash removal outer wall, 6-an air supply tube, 7-a three-way tube, 8-an ash removal bottom plate, 9-a control unit, 10-an operation door and 11-a round and square air supply tube; 12-a draught fan; 13-lifting lugs; 14-a denitration catalyst module; 15-a support base; 16-a buffer; 17-a base; 18-rectangular air supply outlet; 19-a blower; 20-magnetic base; 21-a pneumatic vibrator; 22-rectangular blast pipe; 23-a catalyst module housing; 24-a magnetic attraction coil; 25-vibrator air inlet hole; 26-vibrator air outlet holes; 27-a fixation hole; 28-coil slot.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the present invention is used, the description is merely for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1-4, the structure and cross-sectional view of the denitration catalyst magnetic suction pneumatic vibration ash handling equipment of the present invention are shown, the denitration catalyst magnetic suction pneumatic vibration ash handling equipment comprises an induced air channel, an air supply channel, an ash handling room, a control unit 9, a catalyst unit and a magnetic suction pneumatic vibration unit, the induced air channel comprises an induced air pipe 1, a round and square induced air pipe 2 and a rectangular induced air pipe 3 which are connected in sequence, the rectangular induced air pipe 3 is connected with the top of the ash handling room, and an induced draft fan 12 is further arranged in the induced air pipe 1; the air supply channel comprises an air supply pipe 6, a three-way pipe 7, a round square air supply pipe 11 and a rectangular air supply pipe 22, the air supply pipe 6 is divided into two paths after being connected with the three-way pipe 7, the two paths are connected to two sides of the ash removal room through the round square air supply pipe 11 and then connected onto a base 17 through the rectangular air supply pipe 22, the inside of the base 17 is of a cavity structure, rectangular air supply outlets 18 are formed in two sides of the base 17, the rectangular air supply pipe 22 is communicated with the base 17 through the rectangular air supply outlets 18, and an air supply blower 19 is further arranged in the air supply pipe 6; the blower 19 and the induced draft fan 12 form micro negative pressure in the closed structure to prevent fly ash from escaping; the ash removal room comprises an ash removal roof 4, an ash removal room outer wall 5, an ash removal room bottom plate 8 and an operation door 10, wherein the ash removal roof 4, the ash removal room outer wall 5 and the ash removal room bottom plate 8 form a closed structure, the operation door 10 is arranged on the ash removal room outer wall 5, the operation door 10 is connected with the ash removal room outer wall 5 through a hinge, and a rubber coating is arranged at the edge of the operation door 10 to achieve a sealing effect; the catalyst unit includes denitration catalyst module 14, support base 15, base 17 and catalyst module casing 23, and denitration catalyst module 14 is honeycomb catalyst, plate-type catalyst or triangle honeycomb catalyst, denitration catalyst module 14 sets up and places after catalyst module casing 23's inside on supporting base 15, supports base 15 and fixes on base 17 through buffer 16, and buffer 16 passes through the fastener and installs on base 17, and buffer 16 is rubber buffer or spring damper for weaken denitration catalyst module 14 to base 17's vibration transmission.
Referring to fig. 5 and 6, the magnetic pneumatic vibration unit according to the present invention is schematically shown in structure, and includes a magnetic base 20, a pneumatic vibrator 21, and a magnetic coil 24, where the pneumatic vibrator 21 is powered by compressed gas, and drives a piston to reciprocate in a cylinder by switching a ventilation direction, so as to drive the pneumatic vibrator 21 to vibrate, a vibration frequency of the pneumatic vibrator 21 is 1 to 350Hz, and a pressure of working gas is 0.15 to 10 MPa. The pneumatic vibrator 21 and the magnetic base 20 are provided with corresponding fixing holes 27, the pneumatic vibrator and the magnetic base are connected and fixed through high-strength screws, the magnetic base 20 is internally provided with an iron core, the magnetic base 20 is provided with a coil groove 28, a plurality of turns of metal magnetic coils 24 are distributed in the coil groove 28, and the metal coils generate electromagnetic force to adsorb the magnetic base on a metal shell of the denitration catalyst module 14 in a power-on state. The on-off of the power supply of the magnetic base 20 and the on-off of the pneumatic vibrator 21 are controlled by the control unit 9, and the control unit 9 can control the on-off of the magnetic coil 24 and the pneumatic vibrator 21 to realize the functions of timing, periodic cycle work and the like of the pneumatic vibrator 21. The blower 19 is controlled by the control unit 9, similarly to the induced draft fan 12, and a frequency converter is provided in the control unit 9 to adjust the rotation speed of the blower 19 and the induced draft fan 12.
Example 1:
the plate type catalyst module is used for removing ash, the specifications of the plate type catalyst are as follows, the plate type catalyst module is 1910mm in length, 970mm in width and 1420mm in height, 16 sub-unit bodies are arranged in each unit body, the specification of each unit body is 464 x 550mm, 67 plates of plate type catalysts are arranged in each sub-module, and the catalyst shell is made of Q275 materials.
And (3) opening the ash removal room operation door 10, lifting the catalyst module lifting lug 13 by using a forklift, and placing the catalyst module on the support base 15. After the catalyst module is placed stably, 1 magnetic suction pneumatic vibration module is respectively arranged on 3 surfaces of the upper side, the left side and the right side of the denitration catalyst module 14, after each magnetic suction vibration module is placed well, the coil is closed through the control unit 9, and after the power is on, the magnetic suction coil 24 establishes an electromagnetic field, so that the magnetic suction base 20 is adsorbed on the catalyst module shell 23. After the 3 magnetic pneumatic vibration modules are completely installed, the ash removal room operating door 10 is closed.
The control unit 9 turns on the switches of the blower 19 and the induced draft fan 12, and the frequency of the frequency converter of the induced draft fan is adjusted to 70Hz and the frequency of the frequency converter of the blower is adjusted to 60 Hz. And (3) opening a switch of the pneumatic vibrator 21, adjusting the air inlet pressure of the vibrator to be 0.8MPa and the vibration frequency to be 10Hz, and closing the vibrator after the vibrator works for 20 minutes. And subsequently, the air feeder and the induced draft fan unit continuously work for 10 minutes, then the operation door 10 is opened, the magnetic suction switch is sequentially disconnected, and the vibrator is taken down.
And (3) carrying out ash removal test on the 5 plate-type catalyst modules for 30 minutes by respectively using a compressed air blowing method and a magnetic suction pneumatic vibration ash removal method, and weighing the weight of each catalyst module before and after ash removal to obtain the ash removal weight of each module. As shown in Table 1, the average ash removal weight using the 30 minute method of purging with compressed air was 4.4kg, the average ash removal weight using the 30 minute method of magnetically attracted pneumatic vibration ash removal was 9.3kg, and the treatment of the plate catalyst block using the magnetically attracted pneumatic vibration ash removal method removed 4.9kg more fly ash than the conventional compressed air purging method.
TABLE 1 Ash removal amount (unit: kg) of two ash removal methods for plate catalyst
Example 2:
the ash of the honeycomb catalyst module is removed, the specification of the honeycomb catalyst module is as follows, the length is 1910mm, the width is 970mm, the height is 1150mm, the module internally contains 72 unit bodies, the number of the unit body holes is 18, the specification of the catalyst unit body is 150 x 870mm, and the material of the shell of the catalyst module is Q345.
And (4) opening the ash removal room operation door 10, lifting the catalyst module lifting lug 13 by using a forklift, and placing the catalyst module on the support base 15. After the catalyst module is placed stably, 1 magnetic suction pneumatic vibration module is respectively arranged on 4 surfaces of the left side, the right side, the front side and the rear side of the denitration catalyst module 14, after each magnetic suction vibration module is placed well, the coil is closed through the control unit 9, and after the coil is powered on, the magnetic suction coil 23 establishes an electromagnetic field, so that the magnetic suction base 19 is adsorbed on the shell of the catalyst module 14. After the 5 magnetic pneumatic vibration modules are completely installed, the dust removing room operating door 10 is closed.
The control unit 9 turns on the switches of the blower 19 and the induced draft fan 12, and the frequency of the frequency converter of the induced draft fan is adjusted to 70Hz and the frequency of the frequency converter of the blower is adjusted to 60 Hz. And opening a switch of the pneumatic vibrator 21, and adjusting the air inlet pressure of the vibrator to be 0.6MPa and the vibration frequency to be 5 Hz. Firstly, opening the left side vibrator and the right side vibrator for magnetic suction and air-actuated vibration, and closing the left side vibrator and the right side vibrator after working for 5 minutes; then, the front vibrator and the rear vibrator are turned on, and after 5 minutes of operation, the front vibrator and the rear vibrator are turned off. The front and rear vibrators and the left and right vibrators are turned off after alternately working for 20 minutes. And subsequently, the blower and the draught fan unit continue to work for 10 minutes, the operation door 10 is opened, the magnetic suction switch is sequentially disconnected, and the vibrator is taken down.
And (3) carrying out ash removal test on 5 honeycomb catalyst modules for 30 minutes by respectively using a compressed air blowing method and a magnetic suction pneumatic vibration ash removal method, and weighing the weight of each catalyst module before and after ash removal to obtain the ash removal weight of each module. As shown in Table 2, the average ash removal weight of 14.7kg using the method of blowing with compressed air for 30 minutes, the average ash removal weight of 33.9kg using the method of magnetic attraction pneumatic vibration ash removal for 30 minutes, and 19.2kg more fly ash was removed by treating the honeycomb catalyst block using the method of magnetic attraction pneumatic vibration ash removal than by the conventional method of blowing with compressed air.
TABLE 2 Ash removal amount (unit: kg) of two ash removal methods for honeycomb catalyst
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A denitration catalyst magnetic pneumatic vibration ash removal device is characterized by comprising an induced air channel, an air supply channel, an ash removal room, a control unit (9), a catalyst unit and a magnetic pneumatic vibration unit;
the denitration catalyst module is characterized in that the catalyst unit comprises a denitration catalyst module (14), a supporting base (15), a base (17) and a catalyst module shell (23), the denitration catalyst module (14) is arranged in the catalyst module shell (23) and then placed on the supporting base (15), the supporting base (15) is fixed on the base (17), and the base (17) is of a cavity structure;
the induced air channel is connected with the top of the ash removal room, the air supply channel is communicated with the base (17) through the bottom of the ash removal room, the magnetic suction pneumatic vibration unit is arranged on the catalyst module shell (23), and the control unit (9) is in communication connection with the magnetic suction pneumatic vibration unit.
2. The magnetically attracted pneumatic vibration ash handling device of claim 1, wherein a buffer (16) is installed between the support base (15) and the base (17), and the buffer (16) is installed on the base (17) by fasteners.
3. The magnetically-attracted pneumatic vibration ash handling device of claim 1 or 2, wherein the denitration catalyst module (14) is a honeycomb catalyst or a plate catalyst.
4. The magnetically-assisted pneumatic vibration ash handling device for denitration catalysts according to claim 2, wherein the buffer (16) is a rubber buffer or a spring buffer.
5. The magnetically-attracted pneumatic vibration ash handling device for the denitration catalyst according to claim 1, wherein the induced air channel comprises an induced air pipe (1), a round-to-square induced air pipe (2) and a rectangular induced air pipe (3) which are sequentially connected, the rectangular induced air pipe (3) is connected with the top of the ash removal room, and an induced draft fan (12) is further arranged in the induced air pipe (1).
6. The magnetically-attracted pneumatic vibration ash removal device for the denitration catalyst as claimed in claim 1, wherein the air supply channel comprises an air supply pipe (6), a three-way pipe (7), a round-to-square air supply pipe (11) and a rectangular air supply pipe (22), the air supply pipe (6) is divided into two paths after being connected with the three-way pipe (7), the two paths are connected to two sides of the ash removal room through the round-to-square air supply pipe (11), the two paths are connected to two sides of the base (17) through the rectangular air supply pipe (22), and an air supply blower (19) is further arranged in the air supply pipe (6).
7. The magnetically-attracted pneumatic vibration ash removal device for the denitration catalyst of claim 6, wherein rectangular air supply outlets (18) are formed in two sides of the base (17), and the rectangular air supply pipe (22) is communicated with the base (17) through the rectangular air supply outlets (18).
8. The magnetically-attracted pneumatic vibration ash handling device of claim 1, wherein the ash removal chamber comprises an ash removal roof (4), an ash removal outer wall (5), an ash removal bottom plate (8) and an operation door (10), the ash removal roof (4), the ash removal outer wall (5) and the ash removal bottom plate (8) form a closed structure, and the operation door (10) is arranged on the ash removal outer wall (5).
9. The magnetic pneumatic vibration ash handling equipment of claim 1, wherein the magnetic pneumatic vibration unit comprises a magnetic base (20), a pneumatic vibrator (21) and a magnetic coil (24), the pneumatic vibrator (21) and the magnetic base (20) are fixedly mounted by a fastener, the magnetic base (20) is provided with a coil groove (28), and a plurality of turns of the magnetic coil (24) are distributed in the coil groove (28).
10. A denitration catalyst magnetic suction pneumatic vibration ash removal method is characterized by comprising the following steps:
installing a denitration catalyst module (14) into an ash removal room;
a plurality of magnetic pneumatic vibration units are arranged on the catalyst module shell (23);
the switch of the blower (19), the draught fan (12) and the pneumatic vibrator (21) is turned on;
the pneumatic vibrator (21) enables the hardened fly ash in the pore channel of the denitration catalyst module (14) to fall off through vibration;
the blowing air vertically flows upwards after entering the base (17) through the air supply channel and passes through the denitration catalyst module (14), and the fly ash is output through the induced air channel.
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| CN202210760674.6A CN114931857A (en) | 2022-06-30 | 2022-06-30 | Denitration catalyst magnetic suction pneumatic vibration ash removal device and method |
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| CN202210760674.6A CN114931857A (en) | 2022-06-30 | 2022-06-30 | Denitration catalyst magnetic suction pneumatic vibration ash removal device and method |
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2022
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