CN111729511A - Portable denitration catalyst dust collecting equipment - Google Patents
Portable denitration catalyst dust collecting equipment Download PDFInfo
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- CN111729511A CN111729511A CN202010767170.8A CN202010767170A CN111729511A CN 111729511 A CN111729511 A CN 111729511A CN 202010767170 A CN202010767170 A CN 202010767170A CN 111729511 A CN111729511 A CN 111729511A
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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
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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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
- B01D53/8628—Processes characterised by a specific catalyst
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention relates to a mobile denitration catalyst dust removal device which comprises a negative-pressure high-efficiency fan, a cloth bag dust removal assembly connected with the negative-pressure high-efficiency fan, and a cyclone separation assembly connected with the cloth bag dust removal assembly; the bag-type dust collection assembly comprises a dust collection shell, a support for placing and supporting the dust collection shell, a bag-type dust collector arranged in the dust collection shell, and a first dust collection hopper arranged below the dust collection shell; the cyclone separation assembly comprises a cyclone separation frame body, a cyclone separation barrel arranged on the cyclone separation frame body, and a second dust hopper arranged below the cyclone separation barrel; the negative-pressure efficient fan comprises a negative-pressure fan, a first air suction pipe connected with the negative-pressure fan and the first air suction port respectively, a second air suction pipe connected with the first air inlet and the second air suction port respectively, and an ash suction pipe connected with the second air inlet.
Description
Technical Field
The invention relates to the technical field of dust removal, and particularly relates to a mobile denitration catalyst dust removal device.
Background
At present, the most mature and effective method for denitration of flue gas of a coal-fired boiler is an SCR method, and SCR catalysts have three structural forms, namely honeycomb type, flat plate type and corrugated plate, wherein the honeycomb type catalyst has the widest application range due to strong mechanical structure and strong economy and accounts for more than 85 percent of the market share. After the catalyst is operated for a period of time, the catalyst is gradually ineffective under the influence of the pollution of alkaline metals in the flue gas, the blockage of coal ash in the flue gas and other reasons, so that the emission of the flue gas can not meet the national environmental protection emission requirement; meanwhile, the blockage of the catalyst increases the resistance of a flue, the output of an induced draft fan is increased, and when the blockage is serious, a unit cannot run at full load or a boiler runs at positive pressure and cannot adjust the peak, so that the economic and safe running of the unit is seriously influenced, and the blocked denitration catalyst must be treated; the scrapped denitration catalyst can be treated and regenerated;
when the denitration catalyst is discarded and then disposed or regenerated and is detached from the reactor, a large amount of floating ash or other impurities often exist on the upper end surface and the unit strip pore channels, and the field cleaning is necessary, so that a necessary movable field high-efficiency ash removal device is needed.
Disclosure of Invention
The invention aims to provide a mobile denitration catalyst dust removal device, which aims to solve the technical problems of improving the dust removal effect, improving the dust removal efficiency and saving the labor time.
The invention discloses a mobile denitration catalyst dust removal device, which is realized by the following steps:
a movable denitration catalyst dust removal device comprises a negative-pressure high-efficiency fan, a cloth bag dust removal assembly connected with the negative-pressure high-efficiency fan, and a cyclone separation assembly connected with the cloth bag dust removal assembly; wherein
The bag-type dust collection assembly comprises a dust collection shell, a bracket for placing and supporting the dust collection shell, a bag-type dust collector arranged in the dust collection shell, and a first dust collection hopper arranged below the dust collection shell; the bag-type dust remover comprises a pulse air injection part and a dust removal bag, wherein the pulse air injection part is arranged in the dust removal shell, and the dust removal bag is connected with the pulse air injection part and is positioned in the dust removal shell; the pulse air injection part comprises a high-pressure air storage tank, an electromagnetic pulse valve connected with the high-pressure air storage tank, a pulse spray pipe with one end connected with the electromagnetic pulse valve and the other end extending into the dust removal bag, and a pulse valve controller for controlling the electromagnetic pulse valve to open and close; the electromagnetic pulse valve is also provided with a pulse valve fault alarm;
the cyclone separation assembly comprises a cyclone separation frame body, a cyclone separation barrel arranged on the cyclone separation frame body, and a second dust hopper arranged below the cyclone separation barrel; the cyclone separation cylinder also comprises a cylindrical air inlet cylinder and an inverted cone reflux cylinder connected with the lower end part of the cylindrical air inlet cylinder; and
the top of the dust removal shell is provided with a first air inlet, and the lower end part of the side wall of the dust removal shell is positioned below the dust removal bag and is provided with a first air inlet; a second air suction port is formed in the top of the cylindrical air inlet cylinder, and a second air inlet is formed in one side wall of the cylindrical air inlet cylinder;
the negative-pressure efficient fan comprises a negative-pressure fan, a first air suction pipe connected with the negative-pressure fan and the first air suction port respectively, a second air suction pipe connected with the first air inlet and the second air suction port respectively, and an ash suction pipe connected with the second air inlet.
Furthermore, an access door is arranged on one side wall of the dust removal shell at the position of the cloth bag dust removal component.
Furthermore, one end of the dust suction pipe, which is connected with the second air inlet, extends into the second air inlet and enters the interior of the cylindrical air inlet cylinder, and the extending end of the dust suction pipe is arranged along the inner side wall of the cylindrical air inlet cylinder and extends into the cylindrical air inlet cylinder by a distance which is one fourth of the perimeter of the inner wall of the cylindrical air inlet cylinder;
the second air suction pipe is connected with the second air suction port, one end of the second air suction pipe extends into the second air inlet and enters the cylindrical air inlet barrel, and the height of the horizontal plane where the lower end of the extending end of the second air suction pipe is located is lower than that of the horizontal plane where the second air inlet is located.
Furthermore, the second aspiration channel with the one end that first air inlet is connected stretches into just be located in the dust removal casing the below of dust removal bag, the second aspiration channel stretches into be equipped with gas dispersion spare on the one end port in the dust removal casing.
Furthermore, the dust removing bag is circumferentially arranged along the inner wall of the dust removing shell, and a resistance sensor is installed in the dust removing bag;
the resistance sensor is electrically connected with the pulse valve controller.
Furthermore, the bottom of the dust removal shell is in an inverted cone shape, and a first ash discharge valve is installed at the bottom of the dust removal shell.
Furthermore, a second ash discharge valve is arranged at the bottom of the inverted cone backflow cylinder.
Furthermore, the pulse valve fault alarm comprises an airflow sensor, an alarm controller and an alarm module, wherein the airflow sensor is arranged below the electromagnetic pulse valve in the pulse spray pipe, the alarm controller is electrically connected with the airflow sensor, and the alarm module is electrically connected with the alarm controller.
Furthermore, a threaded hole is formed in the pipe wall, close to the electromagnetic pulse valve, of the pulse spray pipe, and the detection end of the airflow sensor extends into the pipeline of the pulse spray pipe through the threaded hole.
Furthermore, a dust collecting chamber is arranged at the bottom of the inverted cone reflux cylinder, and a blast cap is arranged above the dust collecting chamber;
and a gap is reserved between the periphery of the blast cap and the inner wall of the inverted cone backflow cylinder.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the suction force to dust is improved through the negative pressure high-efficiency fan, and the dust removal effect and efficiency are enhanced; the wind cap is arranged in the cyclone separation component, so that the influence of the entering wind on the dust deposited on the bottom can be effectively avoided, and the cyclone separation efficiency is higher; the detection of the air flow at the electromagnetic pulse valve is added into the bag type dust removing assembly, so that whether the pulse air injection part is damaged or not can be effectively known in real time, the bag type dust removing assembly can be overhauled in time, the dust removing work is prevented from being delayed, and the dust removing progress is accelerated.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram illustrating an overall operation flow provided in embodiment 1 of the present invention;
FIG. 2 shows a schematic view of a bag house dust collector assembly provided in example 1 of the present invention;
FIG. 3 is an enlarged view of part A provided in example 1 of the present invention;
FIG. 4 is an enlarged view of part B provided in example 1 of the present invention;
FIG. 5 shows a schematic diagram of a pulse valve malfunction alarm provided in embodiment 1 of the present invention;
FIG. 6 shows a schematic diagram of the cyclone separation assembly provided in example 1 of the present invention;
FIG. 7 is a schematic view showing a structure of a pulse jet part provided in embodiment 2 of the present invention;
FIG. 8 is a schematic view showing the structure of another pulse jet unit provided in embodiment 2 of the present invention;
fig. 9 shows a schematic structural diagram of another pulse jet unit provided in embodiment 2 of the present invention.
In the figure: the dust collecting bag assembly comprises a bag type dust collecting assembly 100, a dust collecting shell 110, a first air inlet 111, a first air inlet 112, an access door 113, a first dust exhaust valve 114, a support 120, a pulse air injection part 130, a high-pressure air storage tank 131, an electromagnetic pulse valve 132, a pulse spray pipe 133, a main pipe 1331, a branch pipe 1332, a dust collecting bag 134, a resistance sensor 135, a pulse valve controller 136, a pulse valve fault alarm 140, an air flow sensor 141, an alarm controller 142, an alarm module 143, a first dust collecting hopper 150, a cyclone separation assembly 200, a cyclone separation frame body 210, a cylindrical air inlet barrel 220, a second air inlet 221, a second air inlet 222, a reverse cone backflow barrel 230, a second dust exhaust valve 231, a dust collecting chamber 232, an air cap 233, a second dust collecting hopper 240, a negative pressure fan 310, a first air suction pipe 320, a second air suction pipe 330, a gas dispersing part 331 and an.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1 to 9, a mobile denitration catalyst dust removing apparatus includes a negative pressure high efficiency fan, a bag dust removing assembly 100 connected to the negative pressure high efficiency fan, and a cyclone separating assembly 200 connected to the bag dust removing assembly 100.
Specifically, referring to fig. 2, the bag-type dust collecting assembly 100 includes a dust collecting housing 110, a bracket 120 for supporting the dust collecting housing 110, a bag-type dust collector disposed in the dust collecting housing 110, and a first dust collecting hopper 150 disposed below the dust collecting housing 110; the bag-type dust collector comprises a pulse air injection part 130 arranged in the dust collection shell 110 and a dust collection bag 134 which is connected with the pulse air injection part 130 and is positioned in the dust collection shell 110; the pulse air injection part 130 comprises a high-pressure air storage tank 131, an electromagnetic pulse valve 132 connected with the high-pressure air storage tank 131, a pulse spray pipe 133 with one end connected with the electromagnetic pulse valve 132 and the other end extending into the dust removal bag 134, and a pulse valve controller 136 for controlling the electromagnetic pulse valve 132 to open and close; the electromagnetic pulse valve 132 is also provided with a pulse valve fault alarm 140. The pulse valve fault alarm 140 can monitor whether the pulse electromagnetic valve works normally or not in real time, and dust removal faults caused by the pulse electromagnetic valve faults are avoided.
Referring to fig. 6, the cyclone separation assembly 200 includes a cyclone separation frame body 210, a cyclone separation cylinder provided on the cyclone separation frame body 210, and a second dust hopper 240 provided below the cyclone separation cylinder; the cyclone separation cylinder further comprises a cylindrical air inlet cylinder 220 and an inverted cone reflux cylinder 230 connected with the lower end part of the cylindrical air inlet cylinder 220.
A first air inlet 111 is formed in the top of the dust removing housing 110, and a first air inlet 112 is formed below the dust removing bag 134 at the lower end of the side wall of the dust removing housing 110; the top of the cylindrical air inlet drum 220 is provided with a second air suction port 221, and a side wall of the cylindrical air inlet drum 220 is provided with a second air inlet 222.
The negative pressure high efficiency fan comprises a negative pressure fan 310, a first air suction pipe 320 respectively connected with the negative pressure fan 310 and the first air suction port 111, a second air suction pipe 330 respectively connected with the first air inlet 112 and the second air suction port 221, and an ash suction pipe 340 connected with the second air inlet 222.
The first air suction pipe 320 is connected with the first air inlet 111 in a sealing manner, the second air suction pipe 330 is connected with the second air inlet and the second air inlet 221 in a sealing manner, and the dust suction pipe 340 is connected with the second air inlet 222 in a sealing manner.
Optionally, the ash suction pipe 340 may be connected to a plurality of ash suction pipe 340 openings, so that the area of the catalyst module facing the ash suction pipe 340 openings is larger, and the ash removal efficiency is higher.
Preferably, referring to fig. 3, an access door 113 is installed on a side wall of the dust removing housing 110 at the bag-type dust removing assembly 100. When pulse solenoid valve trouble, can open through access door 113 and overhaul for overhaul more convenient.
Preferably, referring to fig. 6, an end of the dust suction pipe 340 connected to the second air inlet 222 extends into the second air inlet 222 and enters the interior of the cylindrical air inlet drum 220, and an extended end of the dust suction pipe 340 is disposed along an inner side wall of the cylindrical air inlet drum 220 and extends into a position that is a quarter of a circumference of an inner wall of the cylindrical air inlet drum 220.
The end of the second air suction pipe 330 connected to the second air suction opening 221 extends into the second air inlet 222 and enters the cylindrical air inlet barrel 220, and the height of the horizontal plane of the lower end of the extending end of the second air suction pipe 330 is lower than the height of the horizontal plane of the second air inlet 222.
The dust suction pipe 340 and the second suction pipe 330 extend into the cylindrical air inlet drum 220, so that the air flow entering the cylindrical air inlet drum 220 forms an annular air flow, the separation of dust and air is facilitated, and backflow ascending air is formed in the inverted cone-shaped backflow drum and is discharged from the air outlet.
Preferably, referring to fig. 4, one end of the second air suction pipe 330 connected to the first air inlet 112 extends into the dust removal housing 110 and is located below the dust removal bag 134, and an end port of the second air suction pipe 330 extending into the dust removal housing 110 is provided with an air dispersing member 331.
End that stretches into in the dust removal casing 110 at second aspiration channel 330 sets up gas dispersion spare 331, can make the gas dispersion of taking the dust in the air of dust removal bag 134 below, form updraft evenly distributed on dust removal bag 134 along with entering gas for each department homoenergetic of dust removal bag 134 effectively removes dust, and it causes to cause the dust extrusion excessively at dust removal bag 134 part to avoid an air inlet, influences dust removal effect and efficiency, makes the utilization ratio performance of dust removal bag 134 to the biggest.
Preferably, the dust removing bag 134 is circumferentially arranged along the inner wall of the dust removing housing 110, and a resistance sensor 135 is installed in the dust removing bag 134; the resistance sensor 135 is electrically connected to the pulse valve controller 136.
When the resistance in the dust removal bag 134 reaches a preset value (the preset value can be set during equipment debugging), the pulse valve controller 136 sends a signal, the pulse solenoid valve is opened, high-pressure gas is sprayed into the dust removal bag 134 from the high-pressure gas storage tank 131 in a very short time (the gas source pressure is 0.4-0.5Mpa), the spraying time is 0.1-0.2s, the high-pressure gas enables the filter bag to vibrate in a high-frequency mode, and the gas flow caused by the high-pressure gas spraying enables the gas outside the dust removal bag 134 to drop rapidly.
The high pressure gas tank 131 is further connected to an air compressor for compressing the gas in the high pressure gas tank 131 to a required value and then discharging the compressed gas in a pulse mode.
Preferably, the bottom of the dust removing housing 110 is in an inverted cone shape, and the first dust discharging valve 114 is installed at the bottom of the dust removing housing 110.
The bottom of the dust removal shell 110 which is arranged in an inverted cone shape is convenient for collecting settled dust.
The bottom of the reverse cone backflow cylinder 230 is provided with a second ash discharge valve 231.
Preferably, referring to fig. 5, the pulse valve fault alarm 140 includes an air flow sensor 141 located below the electromagnetic pulse valve 132 in the pulse nozzle 133, an alarm controller 142 electrically connected to the air flow sensor 141, and an alarm module 143 electrically connected to the alarm controller 142.
When the air flow sensor 141 does not sense the air flow, that is, the pulse solenoid valve fails, the alarm controller 142 controls the alarm module 143 to alarm.
Optionally, the alarm module 143 may be, but not limited to, an alarm bell, a flashing light, etc.
A threaded hole is formed in the pipe wall of the pulse nozzle 133, which is close to the electromagnetic pulse valve 132, and the detection end of the airflow sensor 141 extends into the pipeline of the pulse nozzle 133 through the threaded hole.
Alternatively, the airflow sensor 141 may be, but is not limited to, a thermal conductivity type flow sensor.
Preferably, a dust collecting chamber 232 is arranged at the bottom of the reverse cone backflow cylinder 230, and a hood 233 is arranged above the dust collecting chamber 232; a gap is left between the periphery of the blast cap 233 and the inner wall of the inverted cone backflow cylinder 230. The dust collecting chamber 232 is arranged at the bottom of the inverted cone reflux cylinder 230 and can collect dust separated in the cyclone separation component 200, and the blast cap 233 is arranged above the dust collecting chamber 232, so that the air sucked by the dust suction pipe 340 can be prevented from blowing away dust deposited in the dust collecting chamber 232 again, and the separation effect is better. A gap is left between the inner walls of the reverse cone backflow cylinder 230 so that dust can fall into the dust collection chamber 232.
Referring to fig. 1, the dust removal process in the present invention is: the negative pressure fan 310 is started to suck dust, the dust is connected to the bag-type dust collection assembly 100 through a first air suction pipe 320 connected with the negative pressure fan 310, the bag-type dust collection assembly 100 is connected to the cyclone separation assembly 200 through a second air suction pipe 330, and the cyclone separation assembly 200 is communicated with the surface of the catalyst module through an ash suction pipe 340; the negative pressure fan 310 is used for extracting the air in the bag-type dust collection assembly 100 from the first air suction pipe 320, the air flow in the bag-type dust collection assembly 100 and the air flow in the cyclone separation assembly 200 are the same due to the connected second air suction pipe 330, namely the air in the cyclone separation assembly 200 flows into the bag-type dust collection assembly 100, the air flow in the cyclone separation assembly 200 is communicated with the outside (namely the surface of the catalyst module) due to the connected dust suction pipe 340, and the outside air flow flows into the cyclone separation assembly 200, namely negative pressure inward air suction is formed.
Due to the adoption of the high-efficiency negative pressure fan 310, the air volume is increased from 530M3/H to 1050M 3/H; the air pressure is adjusted from-300 mbar to-340 mbar. The formed negative pressure is very large, and dust on the surface of the catalyst module can be efficiently sucked away.
Example 2
The overall structure of the mobile denitration catalyst dust removal equipment in the embodiment 2 is the same as that in the embodiment 1, and the only difference is that the cloth bag dust removal assembly 100; wherein
The dust removing bag 134 can be arranged in multiple layers, and a pulse spray pipe 133 is arranged corresponding to each layer;
alternatively, referring to fig. 7, in a pulse jet part 130, pulse jet pipes 133 may be directly connected to a high-pressure air tank 131, and a pulse solenoid valve is directly connected to each pulse jet pipe 133, and an air flow sensor 141 is disposed below each pulse solenoid valve in each pulse jet pipe 133.
Still alternatively, referring to fig. 8, in a pulse jet unit 130, the pulse jet pipe 133 may be divided into a plurality of branch pipes 1332 from a main pipe 1331 connected to the high pressure air tank 131 to each layer of the dust pockets 134, a pulse solenoid valve is provided at a connection point of each branch pipe 1332 and the main pipe 1331, and an air flow sensor 141 is provided below the pulse solenoid valve in each branch pipe 1332.
Still alternatively, referring to fig. 9, in a pulse jet unit 130, the pulse jet pipe 133 corresponding to each layer of the dust pocket 134 may be individually connected to a high-pressure air tank 131, that is, a plurality of high-pressure air tanks 131 are provided, an electromagnetic pulse valve 132 is provided between each pulse jet pipe 133 and the high-pressure air tank 131, and an air flow sensor 141 is provided below the pulse electromagnetic valve in the pulse jet pipe 133.
In the above alternative, each of the airflow sensors 141 is electrically connected to the same alarm controller 142.
The beneficial effect of this embodiment does: the multilayer dust removal bag 134 and a plurality of pulse spray pipes 133 that set up can more effectual shake off the dust on the dust removal bag 134, make dust removal effect better.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 in specific cases to those skilled in the art.
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.
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. The movable denitration catalyst dust removal equipment is characterized by comprising a negative-pressure high-efficiency fan, a cloth bag dust removal component (100) connected with the negative-pressure high-efficiency fan, and a cyclone separation component (200) connected with the cloth bag dust removal component (100); wherein
The cloth bag dust removal component (100) comprises a dust removal shell (110), a bracket (120) for placing and supporting the dust removal shell (110), a cloth bag dust remover arranged in the dust removal shell (110), and a first dust collection hopper (150) arranged below the dust removal shell (110); the bag-type dust collector comprises a pulse air injection part (130) arranged in the dust collection shell (110) and a dust collection bag (134) which is connected with the pulse air injection part (130) and is positioned in the dust collection shell (110); the pulse air injection part (130) comprises a high-pressure air storage tank (131), an electromagnetic pulse valve (132) connected with the high-pressure air storage tank (131), a pulse spray pipe (133) with one end connected with the electromagnetic pulse valve (132) and the other end extending into the dust removal bag (134), and a pulse valve controller (136) for controlling the electromagnetic pulse valve (132) to be opened and closed; a pulse valve fault alarm (140) is also arranged on the electromagnetic pulse valve (132);
the cyclone separation assembly (200) comprises a cyclone separation frame body (210), a cyclone separation cylinder arranged on the cyclone separation frame body (210), and a second dust hopper (240) arranged below the cyclone separation cylinder; the cyclone separation cylinder also comprises a cylindrical air inlet cylinder (220) and an inverted cone reflux cylinder (230) connected with the lower end part of the cylindrical air inlet cylinder (220); and
a first air inlet (111) is formed in the top of the dust removing shell (110), and a first air inlet (112) is formed in the lower end of the side wall of the dust removing shell (110) and is positioned below the dust removing bag (134); a second air suction port (221) is formed in the top of the cylindrical air inlet cylinder (220), and a second air inlet (222) is formed in one side wall of the cylindrical air inlet cylinder (220);
the negative-pressure high-efficiency fan comprises a negative-pressure fan (310), a first air suction pipe (320) connected with the negative-pressure fan (310) and the first air suction port (111), a second air suction pipe (330) connected with the first air inlet (112) and the second air suction port (221), and an ash suction pipe (340) connected with the second air inlet (222).
2. The mobile denitration catalyst dust removing apparatus according to claim 1, wherein an access door (113) is installed at a side wall of the dust removing housing (110) at the cloth bag dust removing assembly (100).
3. The mobile denitration catalyst dust removing apparatus according to claim 1, wherein one end of the dust suction pipe (340) connected to the second air inlet (222) extends into the second air inlet (222) to enter the interior of the cylindrical air inlet drum (220), and the extending end of the dust suction pipe (340) is arranged along the inner side wall of the cylindrical air inlet drum (220) and extends into the cylindrical air inlet drum (220) by a distance of one quarter of the circumference of the inner wall of the cylindrical air inlet drum (220);
one end of the second air suction pipe (330) connected with the second air suction port (221) extends into the second air inlet (222) to enter the cylindrical air inlet barrel (220), and the height of the horizontal plane of the lower end of the extending end of the second air suction pipe (330) is lower than that of the horizontal plane of the second air inlet (222).
4. The mobile denitration catalyst dust removing apparatus according to claim 3, wherein one end of the second air suction pipe (330) connected to the first air inlet (112) extends into the dust removing housing (110) and is located below the dust removing bag (134), and a gas dispersing member (331) is provided on one end port of the second air suction pipe (330) extending into the dust removing housing (110).
5. The mobile denitration catalyst dust removing apparatus according to claim 1, wherein the dust removal bag (134) is arranged circumferentially along an inner wall of the dust removal housing (110), and a resistance sensor (135) is installed in the dust removal bag (134);
the resistance sensor (135) is electrically connected with the pulse valve controller (136).
6. The mobile denitration catalyst dust removing apparatus according to claim 1, wherein the bottom of the dust removing housing (110) is in an inverted cone shape, and a first dust exhaust valve (114) is installed at the bottom of the dust removing housing (110).
7. The mobile denitration catalyst dust removing apparatus according to claim 1, wherein a second ash discharge valve (231) is provided at the bottom of the inverted conical return cylinder (230).
8. The mobile denitration catalyst dust removal apparatus according to claim 1, wherein the pulse valve malfunction alarm (140) comprises an air flow sensor (141) located below the electromagnetic pulse valve (132) in the pulse nozzle (133), an alarm controller (142) electrically connected to the air flow sensor (141), and an alarm module (143) electrically connected to the alarm controller (142).
9. The mobile denitration catalyst dust removing apparatus according to claim 8, wherein a threaded hole is provided on a pipe wall of the pulse nozzle (133) near the electromagnetic pulse valve (132), and the detection end of the gas flow sensor (141) extends into the pipe of the pulse nozzle (133) through the threaded hole.
10. The mobile denitration catalyst dust removal apparatus according to claim 1, wherein a dust collection chamber (232) is provided at the bottom of the inverted cone reflux drum (230), and a hood (233) is provided above the dust collection chamber (232);
a gap is reserved between the periphery of the blast cap (233) and the inner wall of the inverted cone backflow cylinder (230).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010767170.8A CN111729511A (en) | 2020-08-03 | 2020-08-03 | Portable denitration catalyst dust collecting equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767170.8A CN111729511A (en) | 2020-08-03 | 2020-08-03 | Portable denitration catalyst dust collecting equipment |
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| CN111729511A true CN111729511A (en) | 2020-10-02 |
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| CN202010767170.8A Pending CN111729511A (en) | 2020-08-03 | 2020-08-03 | Portable denitration catalyst dust collecting equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364667A (en) * | 2020-12-31 | 2022-11-22 | 贵州西电电力股份有限公司黔北发电厂 | Negative pressure ash removal device |
-
2020
- 2020-08-03 CN CN202010767170.8A patent/CN111729511A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364667A (en) * | 2020-12-31 | 2022-11-22 | 贵州西电电力股份有限公司黔北发电厂 | Negative pressure ash removal device |
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