CN114001368A - Flue gas purification and recycling device of coal-fired boiler and control system thereof - Google Patents
Flue gas purification and recycling device of coal-fired boiler and control system thereof Download PDFInfo
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- CN114001368A CN114001368A CN202111281983.7A CN202111281983A CN114001368A CN 114001368 A CN114001368 A CN 114001368A CN 202111281983 A CN202111281983 A CN 202111281983A CN 114001368 A CN114001368 A CN 114001368A
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- connecting pipe
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003546 flue gas Substances 0.000 title claims abstract description 44
- 238000000746 purification Methods 0.000 title claims abstract description 41
- 238000004064 recycling Methods 0.000 title claims description 17
- 239000000779 smoke Substances 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000002485 combustion reaction Methods 0.000 claims abstract description 48
- 239000000571 coke Substances 0.000 claims abstract description 31
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/002—Regulating fuel supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/002—Regulating air supply or draught using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a flue gas purification, recovery and reuse device of a coal-fired boiler and a control system thereof, and the flue gas purification, recovery and reuse device comprises a combustion furnace, wherein a water tank is arranged at the top of the combustion furnace, a first smoke discharge coiled pipe is arranged inside the water tank, the top of the first smoke discharge coiled pipe is connected with a smoke collection box, first connecting pipes are arranged on two sides of the smoke collection box, one end of each first connecting pipe is connected with a heat exchange box, a second smoke discharge coiled pipe is arranged inside the heat exchange box, one end of the bottom of the second smoke discharge coiled pipe is connected with a second connecting pipe, and the coal-fired boiler can recover waste heat generated by combustion and supply heat to equipment so as to achieve the purpose of energy conservation; the coal-fired boiler can perform auxiliary heating on water through heat generated by smoke discharge, so that the heating efficiency is improved; the coal-fired boiler can recycle unburned coke in the flue gas, so that the waste of resources is avoided, and the effects of energy conservation and emission reduction are achieved.
Description
Technical Field
The invention relates to the field of coal-fired boilers, in particular to a flue gas purification, recovery and reutilization device of a coal-fired boiler and a control system thereof.
Background
The boiler comprises a boiler and a furnace. The hot water or steam generated in the boiler can directly provide heat energy for industrial production and people life, and can also be converted into mechanical energy through a steam power device, or the mechanical energy is converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, is mainly used for life, and has a small amount of application in industrial production. The boiler for generating steam is called as a steam boiler, often called as a boiler for short, and is widely used for thermal power stations, ships, locomotives and industrial and mining enterprises. The application of the boiler is very wide, especially involve the coal-fired boiler, and the existing coal-fired boiler function is single, there are many defects, 1, the existing coal-fired boiler can't recover the waste heat produced by burning and provide heat for the apparatus, achieve the purpose of energy-conservation; 2. the existing coal-fired boiler can not perform auxiliary heating on water through heat generated by smoke discharge, so that the heating efficiency is improved; 3. the existing coal-fired boiler can not recycle unburned coke in the flue gas, but directly discharges the unburned coke into the atmosphere to cause resource waste, and therefore, the flue gas purification, recycling and reusing device of the coal-fired boiler and the control system thereof are provided.
Disclosure of Invention
The invention aims to provide a flue gas purification, recovery and reuse device of a coal-fired boiler and a control system thereof aiming at the defects of the prior art so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a flue gas purification and recycling device of a coal-fired boiler comprises a combustion furnace, wherein a water tank is installed at the top of the combustion furnace, a first smoke discharge coiled pipe is installed inside the water tank, the top of the first smoke discharge coiled pipe is connected with a smoke collection box, first connecting pipes are installed on two sides of the smoke collection box, one end of each first connecting pipe is connected with a heat exchange box, a second smoke discharge coiled pipe is installed inside the heat exchange box, one end of the bottom of the second smoke discharge coiled pipe is connected with a second connecting pipe, one end of the second connecting pipe is connected with a flue gas purification box, a fan box is installed at the bottom of the heat exchange box, a third connecting pipe is connected with the bottom of the fan box, an air inlet hopper is connected with the bottom of the third connecting pipe, one end of the air inlet hopper is connected with a fourth connecting pipe, and one end of the fourth connecting pipe is connected with the flue gas purification box, the centrifugal fan box is installed on the fourth connecting pipe, the water inlet pipe is installed on one side of the top of the water tank, the drain pipes are installed on two sides of the bottom of the water tank, the supporting legs are installed at the bottom of the combustion furnace, the boiler door is installed on the combustion furnace, the control box is installed on one side of the flue gas purification box, the chimney is installed at the top of the flue gas purification box, and the rain cap is installed at the top of the chimney.
As a preferable technical scheme of the invention, the water tank is installed on the top of the combustion furnace through bolts, and the supporting legs are installed at four corners of the bottom of the combustion furnace through bolts.
As a preferable technical solution of the present invention, one end of the first smoke exhaust serpentine is welded to a smoke exhaust groove of the combustion furnace, the other end of the first smoke exhaust serpentine is welded to a smoke collection box, and the heat exchange boxes are mounted on both sides of the water tank by bolts.
As a preferred technical scheme of the present invention, the first connecting pipe is respectively connected to the smoke collecting box and the second smoke discharging coiled pipe in a welding manner, the second smoke discharging coiled pipe is connected to the second connecting pipe in a welding manner, and the second connecting pipe is connected to the smoke purifying box in a welding manner.
As a preferable technical scheme of the present invention, the air intake hopper is welded on both sides of the combustion furnace, the boiler door is fixedly connected with the combustion furnace through a hinge, and the third connecting pipe and the fourth connecting pipe are both welded with the air intake hopper.
As a preferable technical scheme of the invention, the centrifugal fan box is installed on a fourth connecting pipe through a bolt, and one end of the fourth connecting pipe is connected with a coke collecting bin in the flue gas purification box.
As a preferable technical scheme of the invention, the water inlet pipe is fixedly connected with the top of the water tank through the connecting flange and the sealing gasket, and the water outlet pipe is fixedly connected with two sides of the bottom of the water tank through the connecting flange and the sealing gasket.
As a preferred technical scheme of the invention, the chimney is welded on the top of the flue gas purification box, and the fan box is installed on the bottom of the heat exchange box through bolts.
A control system of a flue gas purification and recycling device of a coal-fired boiler is characterized in that a temperature sensor is installed in a water tank, and a coke metering sensor is installed inside a flue gas purification tank; the temperature sensor is electrically connected with a fan in the fan box through a controller, and the coke metering sensor is electrically connected with a centrifugal fan in the centrifugal fan box through the controller; the specific control method is as follows:
s1: when the temperature in the water tank is lower than 80 ℃, the temperature sensor is utilized to control the fan on the fan box to be electrified and work through the controller, so that the heat on the second smoke exhaust coiled pipe and the air are conveyed into the combustion furnace together, and more oxygen and heat are added to the combustion furnace;
s2: coke metering sensor in the gas cleaning case detects the coke in the storehouse is collected to the coke, when reaching certain quantity, then can be through the work of controller control centrifugal fan with coke suction to the combustion furnace in, increase the fuel in the combustion furnace, let unnecessary fuel more fully burn.
The invention has the beneficial effects that:
1. the coal-fired boiler can recover waste heat generated by combustion and supply heat to equipment, so that the aim of saving energy is fulfilled;
2. the coal-fired boiler can perform auxiliary heating on water through heat generated by smoke discharge, so that the heating efficiency is improved;
3. the coal-fired boiler can recycle unburned coke in the flue gas, so that the waste of resources is avoided, and the effects of energy conservation and emission reduction are achieved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a combustion furnace 1, a water tank 2, a first smoke exhaust coiled pipe 3, a smoke collection box 4, a first connecting pipe 5, a heat exchange box 6, a second smoke exhaust coiled pipe 7, a second connecting pipe 8, a fan box 9, a third connecting pipe 10, an air inlet hopper 11, a centrifugal fan box 12, a smoke purification box 13, a chimney 14, a rain cap 15, a water inlet pipe 16, a water outlet pipe 17, a boiler door 18, supporting legs 19 and a control box 20.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.
Example (b): referring to fig. 1, the present invention provides a technical solution: a flue gas purification and recycling device of a coal-fired boiler comprises a combustion furnace 1, a water tank 2 is arranged at the top of the combustion furnace 1, a first smoke discharge coiled pipe 3 is arranged inside the water tank 2, a smoke collection box 4 is connected at the top of the first smoke discharge coiled pipe 3, first connecting pipes 5 are arranged on two sides of the smoke collection box 4, one end of each first connecting pipe 5 is connected with a heat exchange box 6, a second smoke discharge coiled pipe 7 is arranged inside the heat exchange box 6, one end of the bottom of the second smoke discharge coiled pipe 7 is connected with a second connecting pipe 8, one end of the second connecting pipe 8 is connected with a flue gas purification box 13, a fan box 9 is arranged at the bottom of the heat exchange box 6, a third connecting pipe 10 is connected at the bottom of the fan box 9, an air inlet hopper 11 is connected at the bottom of the third connecting pipe 10, a fourth connecting pipe 21 is connected at one end of the air inlet hopper 11, and one end of the fourth connecting pipe 21 is connected with the flue gas purification box 13, the centrifugal fan box 12 is installed on the fourth connecting pipe 21, the water inlet pipe 16 is installed on one side of the top of the water tank 2, the water outlet pipes 17 are installed on two sides of the bottom of the water tank 2, the supporting legs 19 are installed on the bottom of the combustion furnace 1, the boiler door 18 is installed on the combustion furnace 1, the control box 20 is installed on one side of the flue gas purification box 13, the chimney 14 is installed on the top of the flue gas purification box 13, and the rain cap 15 is installed on the top of the chimney 14.
The water tank 2 is mounted on the top of the combustion furnace 1 by bolts, and the support legs 19 are mounted on the four corners of the bottom of the combustion furnace 1 by bolts.
One end of the first smoke discharge coiled pipe 3 is connected with a smoke discharge groove of the combustion furnace 1 in a welding mode, the other end of the first smoke discharge coiled pipe 3 is connected with the smoke collection box 4 in a welding mode, and the heat exchange boxes 6 are installed on the two sides of the water tank 2 through bolts.
The first connecting pipe 5 is respectively connected with the smoke collection box 4 and the second smoke discharge coiled pipe 7 in a welding mode, the second smoke discharge coiled pipe 7 is connected with the second connecting pipe 8 in a welding mode, and the second connecting pipe 8 is connected with the smoke purification box 13 in a welding mode.
The air inlet hopper 11 is welded on both sides of the combustion furnace 1, the boiler door 18 is fixedly connected with the combustion furnace 1 through a hinge, and the third connecting pipe 10 and the fourth connecting pipe 21 are both welded with the air inlet hopper 11.
The centrifugal fan box 12 is installed on a fourth connecting pipe 21 through a bolt, and one end of the fourth connecting pipe 21 is connected with a coke collecting bin in the flue gas purifying box 13.
The water inlet pipe 16 is fixedly connected with the top of the water tank 2 through a connecting flange and a sealing gasket, and the water outlet pipe 17 is fixedly connected with the two sides of the bottom of the water tank 2 through a connecting flange and a sealing gasket.
The chimney 14 is welded on the top of the flue gas purification box 13, and the fan box 9 is installed on the bottom of the heat exchange box 6 through bolts.
A control system of a flue gas purification and recycling device of a coal-fired boiler is characterized in that a temperature sensor is arranged in a water tank 2, and a coke metering sensor is arranged in a flue gas purification tank 13; the temperature sensor is electrically connected with a fan in the fan box 9 through a controller, and the coke metering sensor is electrically connected with a centrifugal fan in the centrifugal fan box 12 through the controller; the specific control method is as follows:
s1: when the temperature in the water tank is lower than 80 ℃, the temperature sensor is utilized to control the fan on the fan box to be electrified and work through the controller, so that the heat on the second smoke exhaust coiled pipe and the air are conveyed into the combustion furnace together, and more oxygen and heat are added to the combustion furnace;
s2: coke metering sensor in the gas cleaning case detects the coke in the storehouse is collected to the coke, when reaching certain quantity, then can be through the work of controller control centrifugal fan with coke suction to the combustion furnace in, increase the fuel in the combustion furnace, let unnecessary fuel more fully burn.
The working principle is as follows: a smoke purifying and recycling device of a coal-fired boiler and a control system thereof comprise a combustion furnace 1 and a water tank 2, when in use, coal is added into the combustion furnace 1 by opening a furnace door 18, the combustion furnace 1 is enabled to burn, the water tank 2 is heated, smoke generated by burning enters a smoke collecting box 4 through a first smoke discharging coiled pipe 3, because the first smoke discharging coiled pipe 3 can absorb the heat of the burning smoke and transmit the heat to water, the effect of auxiliary heating is achieved, the water is rapidly heated, the smoke in the smoke collecting box 4 is transmitted to a heat exchange box 6 through a first connecting pipe 5, a fan in a fan box 9 can be electrified to work, the heat in a second smoke discharging coiled pipe 7 is sucked to a third connecting pipe 10 and enters the combustion furnace 1 through an air inlet hopper 11, enough air with heat is arranged in the combustion furnace 1, and the air contains heat, not only be favorable to the rapid heating, and contain oxygen in the air, be favorable to coal to carry out the fast combustion, and the flue gas in the second smoke exhaust coiled pipe 7 can carry flue gas purification case 13 through second connecting pipe 8 and carry out purification treatment, filter harmful substance such as coke, become the flue gas air and discharge through chimney 14, and the coke molecule in flue gas purification case 13 can be monitored through coke measuring transducer, when the number exceeds certain, then can be through the centrifugal fan in the centrifugal fan case 12 with coke molecule suction to in the fill 11 of admitting air, enter into through the fill 11 of admitting air and fire in burning furnace 1, thereby will not burn abundant coke recovery in burning furnace 1 and burn once more, reach energy saving's purpose.
The coal-fired boiler can recover waste heat generated by combustion and supply heat to equipment, so that the aim of saving energy is fulfilled; the coal-fired boiler can perform auxiliary heating on water through heat generated by smoke discharge, so that the heating efficiency is improved; the coal-fired boiler can recycle unburned coke in the flue gas, so that the waste of resources is avoided, and the effects of energy conservation and emission reduction are achieved.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. The utility model provides a coal fired boiler's gas cleaning retrieves recycling device, includes fires burning furnace (1), its characterized in that: the top of the combustion furnace (1) is provided with a water tank (2), a first smoke exhaust coiled pipe (3) is arranged inside the water tank (2), the top of the first smoke exhaust coiled pipe (3) is connected with a smoke collection box (4), first connecting pipes (5) are arranged on two sides of the smoke collection box (4), one end of each first connecting pipe (5) is connected with a heat exchange box (6), a second smoke exhaust coiled pipe (7) is arranged inside the heat exchange box (6), one end of the bottom of each second smoke exhaust coiled pipe (7) is connected with a second connecting pipe (8), one end of each second connecting pipe (8) is connected with a smoke purification box (13), a fan box (9) is arranged at the bottom of the heat exchange box (6), a third connecting pipe (10) is connected with the bottom of the fan box (9), and an air inlet hopper (11) is connected with the bottom of the third connecting pipe (10), the one end of air inlet hopper (11) is connected with fourth connecting pipe (21), the one end of fourth connecting pipe (21) links to each other with gas cleaning box (13), install centrifugal fan case (12) on fourth connecting pipe (21), inlet tube (16) are installed to top one side of water tank (2), drain pipe (17) are all installed to the bottom both sides of water tank (2), fire the bottom of burning furnace (1) and install supporting leg (19), fire burning furnace (1) and install pot furnace gate (18), control box (20) are installed to one side of gas cleaning box (13), chimney (14) are installed at the top of gas cleaning box (13), rain cap (15) are installed at the top of chimney (14).
2. The flue gas purification and recovery recycling device of a coal-fired boiler according to claim 1, characterized in that: the water tank (2) is installed on the top of the combustion furnace (1) through bolts, and the supporting legs (19) are installed at four corners of the bottom of the combustion furnace (1) through bolts.
3. The flue gas purification and recovery recycling device of a coal-fired boiler according to claim 1, characterized in that: one end of the first smoke discharge coiled pipe (3) is connected with a smoke discharge groove of the combustion furnace (1) in a welding mode, the other end of the first smoke discharge coiled pipe (3) is connected with the smoke collection box (4) in a welding mode, and the heat exchange boxes (6) are installed on the two sides of the water tank (2) through bolts.
4. The flue gas purification and recovery recycling device of a coal-fired boiler according to claim 1, characterized in that: the first connecting pipe (5) is respectively connected with the smoke collecting box (4) and the second smoke discharging coiled pipe (7) in a welding mode, the second smoke discharging coiled pipe (7) is connected with the second connecting pipe (8) in a welding mode, and the second connecting pipe (8) is connected with the smoke purifying box (13) in a welding mode.
5. The flue gas purification and recovery recycling device of a coal-fired boiler according to claim 1, characterized in that: the air inlet hopper (11) is welded on two sides of the combustion furnace (1), the boiler door (18) is fixedly connected with the combustion furnace (1) through a hinge, and the third connecting pipe (10) and the fourth connecting pipe (21) are both welded with the air inlet hopper (11).
6. The flue gas purification and recovery recycling device of a coal-fired boiler according to claim 1, characterized in that: the centrifugal fan box (12) is installed on a fourth connecting pipe (21) through a bolt, and one end of the fourth connecting pipe (21) is connected with a coke collecting bin in the flue gas purification box (13).
7. The flue gas purification and recovery recycling device of a coal-fired boiler according to claim 1, characterized in that: the water inlet pipe (16) is fixedly connected with the top of the water tank (2) through a connecting flange and a sealing gasket, and the water outlet pipe (17) is fixedly connected with the two sides of the bottom of the water tank (2) through a connecting flange and a sealing gasket.
8. The flue gas purification and recovery recycling device of a coal-fired boiler according to claim 1, characterized in that: the chimney (14) is welded on the top of the flue gas purification box (13), and the fan box (9) is installed on the bottom of the heat exchange box (6) through bolts.
9. The control system of the flue gas purification and recycling device of the coal-fired boiler according to claim 1, characterized in that: a temperature sensor is arranged in the water tank (2), and a coke metering sensor is arranged in the flue gas purification box (13); the temperature sensor is electrically connected with a fan in the fan box (9) through a controller, and the coke metering sensor is electrically connected with a centrifugal fan in the centrifugal fan box (12) through the controller; the specific control method is as follows:
s1: when the temperature in the water tank is lower than 80 ℃, the temperature sensor is utilized to control the fan on the fan box to be electrified and work through the controller, so that the heat on the second smoke exhaust coiled pipe and the air are conveyed into the combustion furnace together, and more oxygen and heat are added to the combustion furnace;
s2: coke metering sensor in the gas cleaning case detects the coke in the storehouse is collected to the coke, when reaching certain quantity, then can be through the work of controller control centrifugal fan with coke suction to the combustion furnace in, increase the fuel in the combustion furnace, let unnecessary fuel more fully burn.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111281983.7A CN114001368A (en) | 2021-11-01 | 2021-11-01 | Flue gas purification and recycling device of coal-fired boiler and control system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111281983.7A CN114001368A (en) | 2021-11-01 | 2021-11-01 | Flue gas purification and recycling device of coal-fired boiler and control system thereof |
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| CN114001368A true CN114001368A (en) | 2022-02-01 |
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| CN213066290U (en) * | 2020-07-24 | 2021-04-27 | 江苏索西热能科技有限公司 | Environment-friendly gas wall-mounted heating stove |
| CN112728522A (en) * | 2020-12-29 | 2021-04-30 | 连云港虹洋热电有限公司 | Industrial waste gas retrieves control system who is used for boiler combustion production steam |
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Application publication date: 20220201 |