CN116753533B - Boiler flue gas waste heat utilization system and method - Google Patents
Boiler flue gas waste heat utilization system and method Download PDFInfo
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- CN116753533B CN116753533B CN202310907584.XA CN202310907584A CN116753533B CN 116753533 B CN116753533 B CN 116753533B CN 202310907584 A CN202310907584 A CN 202310907584A CN 116753533 B CN116753533 B CN 116753533B
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000003546 flue gas Substances 0.000 title claims abstract description 91
- 239000002918 waste heat Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000446 fuel Substances 0.000 claims abstract description 48
- 239000002245 particle Substances 0.000 claims abstract description 30
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 238000003912 environmental pollution Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
-
- 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
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Air Supply (AREA)
Abstract
The invention relates to the technical field of boilers and discloses a boiler flue gas waste heat utilization system and a method, wherein the boiler flue gas waste heat utilization system comprises a boiler body and an air guide pipe, two ends of the air guide pipe are communicated with the boiler body, an air guide plate is arranged in the air guide pipe, the side part of the air guide plate is connected with an air guide head, a blower is arranged outside the air guide pipe and communicated with the air guide plate, a straight-through pipe is arranged outside the air guide pipe, and two ends of the straight-through pipe are communicated with the air guide pipe; the flue gas carries heat and fuel particles to get into the induced air pipe, the air-blower drives the air and blows out through aviation baffle and air-guiding head, blow the flue gas to the backward flow end of induced air pipe, the air velocity of flow of induced air pipe backward flow end is big, make its air pressure little, make the flue gas in the induced air pipe upper end flow through the direct pipe, get into the backward flow end of induced air pipe, thereby make the heat and the fuel particles backward flow that the flue gas carried in this internal, reduce the waste and the heat loss of fuel, solve the problem that the prior art causes boiler heat loss easily as far as possible.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to a boiler flue gas waste heat utilization system and a boiler flue gas waste heat utilization method.
Background
The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy, the original meaning of the boiler refers to a water container heated on fire, the boiler refers to a place where fuel is burned, the boiler comprises two parts of a boiler and a boiler, hot water or steam generated in the boiler can directly provide heat energy required by industrial production and people living, the hot water or steam can also be converted into mechanical energy through a steam power device or be converted into electric energy through a generator, the boiler for providing hot water is called a hot water boiler and is mainly used for living, the boiler for generating steam is also used in small quantity in industrial production, the boiler is often called a boiler for short, and the boiler is widely used in thermal power stations, ships, locomotives and industrial and mining enterprises.
The boiler is carried out at the same time in the boiler and the boiler, after water enters the boiler, the absorbed heat is transferred to water in a boiler heating surface in a steam-water system, so that the water is heated into hot water with certain temperature and pressure or steam is generated, the hot water is led out for application, the fuel is combusted to continuously emit heat in a combustion equipment part, high-temperature flue gas generated by combustion is transmitted to the boiler heating surface through heat propagation, the temperature of the hot water is gradually reduced, and finally the hot water is discharged through a chimney, the thermal power generation is a main power generation mode in China, the power station boiler is used as one of three main machine equipment of the thermal power station, and is developed along with the development of the thermal power industry, in recent years, environmental protection and energy conservation become the important direction of structural adjustment of the electrical power industry in China, the thermal power industry is guided by the policy of 'large pressure and small', the industrial structure is actively promoted for optimizing and upgrading, a large amount of small thermal power units with low energy efficiency and heavy pollution are closed, and the updating and upgrading of the thermal power equipment in China is greatly accelerated, so resources are saved, the utilization rate of resources is effectively improved, and the energy efficiency ratio is heavy in China.
The boiler is classified according to the type of fuel used by the boiler, can divide the boiler into coal-fired boiler, oil-fired boiler and gas-fired boiler and the upgrading technology of coal-fired boiler, the substitute products of oil-gas boiler- - -coal dust boiler, coal gas double-purpose boiler, etc., the coal-fired boiler can divide into layer combustion boiler, room combustion boiler and boiling boiler according to the burning mode, wherein the use of coal-fired boiler is very common, but coal fuel can produce a large amount of flue gas when burning, and carry a large amount of heat and not burn thorough fuel particle in these flue gas, can recycle heat and fuel particle in these flue gas, flue gas waste heat boiler sends the high-temperature flue gas into preheating recovery device, change the high-temperature flue gas into the flue gas of low temperature position after heat exchange, then enter into flue gas treatment equipment, discharge into the atmosphere by the chimney after handling, numerous chemical industry needs fuel oil, gas and boiling process in the production process, the process of burning is inevitably can produce a large amount of heat, wherein this produces a large amount of heat released after burning with discharging, it is complicated to have reached the end, the exhaust-heat is produced after the high-temperature is burnt, the flue gas is up to reach the standard, the exhaust-heat is removed, the high-temperature is required to remove the normal heat, the flue gas is recovered by the heat and the cold water is cooled down, the flue gas is normally by the high-temperature is recovered, the flue gas has been cooled down, and the high-temperature has been removed, and the normal condition and the flue gas can be cooled down, and the heat pipe is cooled down.
At present, the prior art generally adopts an economizer to recycle the waste heat of the boiler flue gas, but fuel particles which are not combusted thoroughly in the boiler are easy to be discharged along with the flue gas, so that environmental pollution and fuel waste are caused, and the flue gas takes away a large amount of heat, so that heat loss in a combustion chamber of the boiler is easy to be caused; therefore, the existing requirements are not met, and a boiler flue gas waste heat utilization system and a boiler flue gas waste heat utilization method are provided.
Disclosure of Invention
The invention provides a boiler flue gas waste heat utilization system and a boiler flue gas waste heat utilization method, which have the beneficial effects that the problems that in the prior art, waste heat of boiler flue gas is recycled by an economizer, unburnt fuel particles in a boiler are easily discharged along with the flue gas, environmental pollution and fuel waste are caused, a large amount of heat is taken away by the flue gas, and heat loss in a combustion chamber of the boiler is easily caused are solved.
The invention provides the following technical scheme: the utility model provides a boiler flue gas waste heat utilization system, includes boiler body and induced air pipe, induced air pipe both ends all with boiler body intercommunication, induced air pipe middle part is connected with the intercommunication pipe, induced air pipe internally mounted has the aviation baffle, aviation baffle lateral part is connected with the air guide head, induced air pipe outside is provided with the air-blower, the air-out end of air-blower with the aviation baffle intercommunication, the aviation baffle sets up induced air pipe's return bend department, induced air pipe outside is provided with through pipe, through pipe sets up induced air pipe return bend department, through pipe both ends all with induced air pipe intercommunication.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the boiler body includes the combustion chamber, induced air pipe sets up to "U" type pipeline, induced air pipe's both ends all with the combustion chamber intercommunication.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the communication conduit is in communication with the induced draft conduit.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the air guide plate is arranged in a hollow plate shape, the number of the air guide heads is a plurality of, the air guide heads are communicated with the air guide plate, and air outlets of the air guide heads are inclined towards the center and gathered.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the air blower is connected with the fixing plate.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the number of the straight-through guide pipes is set to be a plurality of, connecting pieces are arranged at two ends of the straight-through guide pipes, connecting bolts are inserted into the side parts of the connecting pieces, and the connecting bolts are in threaded connection with the side parts of the induced draft guide pipes.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the wind guide pipe is internally provided with a wind shield which is in an arc-shaped thin plate shape, the wind deflector is arranged at the outlet end of the straight-through pipe, and the wind deflector is shielded at the outlet of the straight-through pipe.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the air guide pipe and the outside of the communication pipe are respectively sleeved with a fixed ring, the number of the fixed rings is set to be a plurality, the outside of the fixed rings is provided with a supporting rod, and the supporting rod is connected to the outside of the supporting column.
As an alternative scheme of the boiler flue gas waste heat utilization system, the invention comprises the following steps: the mounting plate is installed to the support column tip, the mounting plate lateral part peg graft has expansion bolts subassembly, expansion bolts subassembly's quantity sets up to a plurality of.
The invention also provides a boiler flue gas waste heat utilization method, which comprises the following specific steps:
s1, fuel combustion: placing fuel in the combustion chamber of the boiler body for combustion;
S2, heat and fuel particle backflow: the heat and fuel particles generated in the combustion chamber enter the induced draft duct along with the flue gas and are blown to the backflow part of the induced draft duct by the air deflector, so that the heat and the fuel particles flow back into the boiler body again;
s3, further refluxing the fuel particles: the fuel particles directly enter the backflow end of the induced draft duct through the through duct and then flow back into the boiler body.
The invention has the following beneficial effects:
1. According to the boiler flue gas waste heat utilization system and method, solid fuel is combusted in the boiler body to generate a large amount of flue gas, the flue gas carries a large amount of heat and fuel particles to enter the induced air duct through the arrangement of the induced air duct, air is driven to be compressed and enter the air deflector, compressed air is blown out through the air guide head, thereby an air wall is formed in the induced air duct, flue gas in the induced air duct is blown to the backflow end of the induced air duct, meanwhile, the air flow rate of the backflow end of the induced air duct is high, the air pressure in the backflow end of the induced air duct is low, the effect that the flue gas is sucked downwards is generated through the arrangement of the through duct, the flue gas in the upper end of the induced air duct carries heat and fuel particles to flow through the through duct, and directly enters the backflow end of the induced air duct, so that the heat carried by the flue gas and the fuel particles flow back into the boiler body again, the flue gas waste heat is enabled to be recycled, the fuel particles are combusted more thoroughly, the waste of fuel is reduced, the heat loss in the boiler body is reduced, the boiler waste caused by the waste of the flue gas is avoided, the waste of the flue gas is caused by the waste of the waste heat of the boiler, and the flue gas is completely combusted along with the flue gas, and the environmental pollution caused by the flue gas is avoided.
2. According to the boiler flue gas waste heat utilization system and the boiler flue gas waste heat utilization method, the outlet end of the lower end of the straight-through duct is covered through the arrangement of the wind shielding plate, so that wind in the induced air duct is prevented from being blown through the outlet end of the straight-through duct directly, the wind in the induced air duct is not easy to be blown in from the outlet end of the lower end of the straight-through duct, the backflow of flue gas is prevented, and the flue gas waste heat utilization effect is further improved.
3. According to the boiler flue gas waste heat utilization system and the boiler flue gas waste heat utilization method, the air guide pipe and the communication guide pipe are fixed between the support columns through the cooperation of the fixing rings and the support rods, and the support columns are fixed on the ground through the arrangement of the mounting plates and the expansion bolt assemblies, so that the air guide pipe and the communication guide pipe are reinforced and supported, and shaking is not easy to occur.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a schematic view of the structure of the air deflector of the present invention.
Fig. 4 is a schematic view of a partial perspective structure of the present invention.
In the figure: 110. a boiler body; 120. an induced draft duct; 121. a combustion chamber; 130. a communication conduit; 140. an air deflector; 150. an air guide head; 160. a blower; 161. a fixing plate; 170. a straight-through conduit; 171. a connecting sheet; 172. a connecting bolt; 173. a wind shielding sheet; 174. a fixing ring; 175. a support rod; 176. a support column; 177. a mounting plate; 178. an expansion bolt assembly.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The present embodiment aims to facilitate the solution of the problem that the prior art generally adopts an economizer to recycle the waste heat of the boiler flue gas, but fuel particles which are not combusted thoroughly in the boiler are easily discharged along with the flue gas, causing environmental pollution and waste of fuel, and the flue gas takes away a large amount of heat and easily causes heat loss in the combustion chamber of the boiler.
The middle part of induced air pipe 120 is connected with intercommunication pipe 130, intercommunication pipe 130 and induced air pipe 120 communicate each other, induced air pipe 120 internally mounted has aviation baffle 140, aviation baffle 140 downside is connected with aviation baffle 150, aviation baffle 140 sets up to curved hollow platy, aviation baffle 150 sets up to hollow tubulose, the quantity of aviation baffle 150 sets up to a plurality of, and the even setting of a plurality of aviation baffle 150 is in the lateral part of aviation baffle 140, aviation baffle 150 all communicates with aviation baffle 140, and the air outlet of all aviation baffle 150 is gathered together to the central slope, the outside of induced air pipe 120 is provided with air-blower 160, outside fixed mounting of induced air pipe 120 has fixed plate 161, air-blower 160 and fixed plate 161 fixed connection.
The air outlet end of the blower 160 is mutually communicated with the air deflector 140, the air deflector 140 is arranged at the return bend of the air guiding pipe 120, the air deflector 140 is arranged at the upper return bend of the inside of the air guiding pipe 120, all the air guiding heads 150 are inclined towards the center of the return bend of the air guiding pipe 120 and gathered together to form an air wall blowing towards the return bend of the air guiding pipe 120, the outer side of the air guiding pipe 120 is provided with three through pipes 170, the through pipes 170 are arranged at the return bend of the air guiding pipe 120, the three through pipes 170 are vertically arranged, connecting pieces 171 are arranged at the upper end and the lower end of the through pipes 170, the connecting pieces 171 are in circular rings, connecting bolts 172 are inserted at the lower sides of the connecting pieces 171 at the upper end, the connecting bolts 172 are in threaded connection with the side parts of the air guiding pipe 120, and the two ends of the through pipes 170 are communicated with the air guiding pipe 120.
In this embodiment: the solid fuel in the boiler body 110 generates a large amount of flue gas, through the setting of induced air conduit 120, make flue gas carry a large amount of heat and fuel particle to enter into induced air conduit 120, through the setting of air-blower 160, drive air compression and get into in the aviation baffle 140, compressed air rethread air guide head 150 blows out, thereby form the air wall in induced air conduit 120, blow the flue gas in induced air conduit 120 to the backward flow end of induced air conduit 120, simultaneously the air velocity of flow of induced air conduit 120 backward flow end is big, make the air pressure in induced air conduit 120 backward flow end little, the effect that the return through direct conduit 170 is absorbed downwards to the flue gas of production flue gas in the induced air conduit 120 upper end carries heat and fuel particle to flow through direct conduit 170, thereby make flue gas carry heat and fuel particle backward flow into boiler body 110 once more, make fuel particle's waste more thoroughly, reduce the loss of fuel, reduce the loss of heat in the boiler body 110 simultaneously, the boiler is carried out to the boiler with the boiler waste heat of fuel, and the exhaust-gas is carried out to the boiler waste, and the exhaust-gas waste is caused by the flue gas is thoroughly, and the environmental pollution is avoided to the flue gas is discharged with the boiler waste of the flue gas is carried out to the flue gas, the flue gas is completely.
Example 2
The present embodiment is intended to further facilitate solving the problem that the air in the air guiding duct 120 is easily blown in from the outlet end of the lower end of the straight-through duct 170, causing the flue gas to flow reversely, thereby affecting the flue gas waste heat utilization effect, and is an improvement made on the basis of embodiment 1, specifically, please refer to fig. 1 and 2, the air guiding duct 120 is internally provided with an air shielding plate 173, the air shielding plate 173 is provided with an arc-shaped thin plate, the air shielding plate 173 is provided with a concave arc-shaped plate, the air guiding plate 140 is provided at the outlet end of the lower end of the straight-through duct 170, and the air guiding plate 140 is shielded at the outlet of the straight-through duct 170, so that the outlet ends of all the straight-through ducts 170 are shielded, and meanwhile, the air guiding plate 140 is not in direct contact with the outlet end of the straight-through duct 170.
In this embodiment: through the setting of windshield 173, hide the exit end of direct pipe 170 lower extreme, avoid the wind in the induced air pipe 120 to blow through from the exit end of direct pipe 170 for the wind in the induced air pipe 120 is difficult to blow in from the exit end of direct pipe 170 lower extreme, avoids causing the adverse current of flue gas, thereby further improves flue gas waste heat utilization's effect.
Example 3
The present embodiment is intended to facilitate solving the problem that the induced air duct 120 and the communication duct 130 lack a reinforced supporting device and shake easily, and is an improvement made on the basis of embodiment 1, specifically, please refer to fig. 1 and 2, the outside of the induced air duct 120 and the outside of the communication duct 130 are sleeved with fixing rings 174, the number of the fixing rings 174 is three, two fixing rings 174 are respectively sleeved at the upper flue gas inlet end of the induced air duct 120 and the lower flue gas return end of the induced air duct 120, the other fixing ring 174 is sleeved at the outside of the communication duct 130, each fixing ring 174 is provided with a supporting rod 175, the number of the supporting rods 175 is two, two supporting rods 175 are respectively and symmetrically installed at the outside of the corresponding fixing rings 174, the ends of the supporting rods 175 are all connected at the outside of the supporting rods 176, the number of the supporting rods 176 is four, and the two pairs of the supporting rods 176 are symmetrically arranged at the front and back sides of the induced air duct 120.
The mounting panel 177 is all installed to the lower extreme of support column 176, and mounting panel 177 all sets up to the square plate, and the upside of mounting panel 177 all has pegged graft expansion bolt subassembly 178, and expansion bolt subassembly 178's quantity all sets up to four, expansion bolt subassembly 178's screw rod portion peg graft in the lateral part of mounting panel 177, and expansion bolt subassembly 178's expansion portion buries under ground, and expansion bolt subassembly 178's screw rod portion inserts and establishes in expansion bolt subassembly 178's expansion portion, and expansion bolt subassembly 178's nut portion locking is in expansion bolt subassembly 178's screw rod portion upper end simultaneously.
In this embodiment: through the cooperation of solid fixed ring 174 and bracing piece 175, fix induced air pipe 120 and intercommunication pipe 130 between support column 176, the setting of rethread mounting panel 177 and expansion bolts subassembly 178 is fixed support column 176 subaerial for induced air pipe 120 and intercommunication pipe 130 are consolidated and supported, thereby are difficult to produce and rock.
Example 4
The embodiment discloses a boiler flue gas waste heat utilization method, which comprises the following specific steps:
S1, fuel combustion: placing fuel in the combustion chamber 121 of the boiler body 110 for combustion;
S2, heat and fuel particle backflow: the heat and the fuel particles generated in the combustion chamber 121 enter the induced draft duct 120 along with the flue gas, and are blown to the return portion of the induced draft duct 120 by the wind deflector 140, so that the heat and the fuel particles return into the boiler body 110 again;
s3, further refluxing the fuel particles: the fuel particles directly enter the return end of the induced draft duct 120 through the through duct 170 and then return back into the boiler body 110.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (4)
1. The utility model provides a boiler flue gas waste heat utilization system which characterized in that: including boiler body (110) and induced air pipe (120), induced air pipe (120) both ends all with boiler body (110) intercommunication, induced air pipe (120) middle part is connected with intercommunication pipe (130), induced air pipe (120) internally mounted has aviation baffle (140), aviation baffle (140) lateral part is connected with air guide head (150), induced air pipe (120) outside is provided with air-blower (160), the air-out end of air-blower (160) with aviation baffle (140) intercommunication, aviation baffle (140) set up the return bend department of induced air pipe (120), induced air pipe (120) outside is provided with through pipe (170), through pipe (170) set up induced air pipe (120) return bend department, through pipe (170) both ends all with induced air pipe (120) intercommunication. The boiler body (110) comprises a combustion chamber (121), the air guide pipe (120) is provided with a U-shaped pipeline, and two ends of the air guide pipe (120) are communicated with the combustion chamber (121); the communication conduit (130) is in communication with the induced draft conduit (120); the air guide plates (140) are arranged in a hollow plate shape, the number of the air guide heads (150) is a plurality, the air guide heads (150) are communicated with the air guide plates (140), and air outlets of the air guide heads (150) are inclined and gathered towards the center; a fixed plate (161) is arranged on the outer side of the induced air duct (120), and the air blower (160) is connected with the fixed plate (161); the number of the through ducts (170) is set to be a plurality, connecting pieces (171) are arranged at two ends of the through ducts (170), connecting bolts (172) are inserted into the side parts of the connecting pieces (171), and the connecting bolts (172) are in threaded connection with the side parts of the induced air ducts (120); a wind shield (173) is arranged in the induced air duct (120), the wind shield (173) is in an arc-shaped thin plate shape, the wind shield (173) is arranged at the outlet end of the through duct (170), and the wind shield (173) is shielded at the outlet of the through duct (170).
2. The boiler flue gas waste heat utilization system according to claim 1, wherein: the air guide pipe (120) and the outside of the communication pipe (130) are sleeved with fixing rings (174), the number of the fixing rings (174) is a plurality, supporting rods (175) are arranged on the outer sides of the fixing rings (174), and the supporting rods (175) are connected on the outer sides of supporting columns (176).
3. The boiler flue gas waste heat utilization system according to claim 2, wherein: the end part of the supporting column (176) is provided with a mounting plate (177), expansion bolt assemblies (178) are inserted into the side part of the mounting plate (177), and the number of the expansion bolt assemblies (178) is a plurality of.
4. A method of utilizing the waste heat of flue gas from a boiler as defined in claim 3, comprising the specific steps of:
S1, fuel combustion: -placing fuel in the combustion chamber (121) of the boiler body (110) for combustion;
S2, heat and fuel particle backflow: heat and fuel particles generated in the combustion chamber (121) enter the induced air duct (120) along with flue gas, and are blown to a backflow part of the induced air duct (120) by the air deflector (140), so that the heat and the fuel particles flow back into the boiler body (110) again;
s3, further refluxing the fuel particles: the fuel particles directly enter the backflow end of the induced draft duct (120) through the through duct (170) and then flow back into the boiler body (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310907584.XA CN116753533B (en) | 2023-07-24 | 2023-07-24 | Boiler flue gas waste heat utilization system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310907584.XA CN116753533B (en) | 2023-07-24 | 2023-07-24 | Boiler flue gas waste heat utilization system and method |
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| Publication Number | Publication Date |
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| CN116753533A CN116753533A (en) | 2023-09-15 |
| CN116753533B true CN116753533B (en) | 2024-05-14 |
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| CN212962199U (en) * | 2020-08-18 | 2021-04-13 | 甘肃富士特暖通科技有限公司 | Vertical boiler |
| CN214370145U (en) * | 2021-01-26 | 2021-10-08 | 淄博工创电气科技有限公司 | Energy-saving mechanism for generator set |
| CN116412394A (en) * | 2021-12-30 | 2023-07-11 | 山东洲星天然物提取智能设备有限公司 | Circulating fluidized bed boiler with high heat utilization rate and combustion method |
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| DE102007059280A1 (en) * | 2007-12-08 | 2009-06-25 | Valentin Rosel | Solid fuel-oil-gas-boiler-attachment for performing combustion of renewable fuel, has control unit, fuel-regulation automatic, boiler circular flow line and burn supply air flap forming operating unit |
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| CN106090893A (en) * | 2016-06-29 | 2016-11-09 | 无锡锡能锅炉有限公司 | A kind of high performance clean burning method of coal-burning boiler |
| CN212962199U (en) * | 2020-08-18 | 2021-04-13 | 甘肃富士特暖通科技有限公司 | Vertical boiler |
| CN214370145U (en) * | 2021-01-26 | 2021-10-08 | 淄博工创电气科技有限公司 | Energy-saving mechanism for generator set |
| CN116412394A (en) * | 2021-12-30 | 2023-07-11 | 山东洲星天然物提取智能设备有限公司 | Circulating fluidized bed boiler with high heat utilization rate and combustion method |
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| CN116753533A (en) | 2023-09-15 |
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