CN107166373A - A kind of steam waste-heat recovery device for boiler combustion system - Google Patents
A kind of steam waste-heat recovery device for boiler combustion system Download PDFInfo
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- CN107166373A CN107166373A CN201710359715.XA CN201710359715A CN107166373A CN 107166373 A CN107166373 A CN 107166373A CN 201710359715 A CN201710359715 A CN 201710359715A CN 107166373 A CN107166373 A CN 107166373A
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- pipe
- boiler
- oxygen
- air
- heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B70/00—Combustion apparatus characterised by means returning solid combustion residues to the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a kind of steam waste-heat recovery device for boiler combustion system, the cyclone separator being connected including boiler and with boiler, the boiler lower end is connected with the scum pipe for discharging cinder, the cyclone separator air outlet is connected with discharge pipe, oxygen preheater and air preheater are provided with the discharge pipe, described oxygen preheater one end is provided with oxygen hose and the other end is connected with hot oxygen pipe, the hot oxygen pipe is fed through boiler and hot oxygen pipe connects boiler back to oxygen preheater one end, described air preheater one end is connected with the warm-air pipe of connection boiler side walls provided with air hose and the other end.Make oxygen and air by being entered back into discharge pipe after waste gas heating in boiler, so as on the premise of by oxygen and air heating, without the use of outside resources, reduce energy consumption, reduce cost.Oxygen and air are passed through in boiler simultaneously simultaneously, and the fuel in boiler can be made more fully to be burnt, its combustion utilization efficiency is improved.
Description
Technical field
The present invention relates to boiler combustion equipment, and in particular to a kind of steam waste heat recovery for boiler combustion system is filled
Put.
Background technology
Boiler is an indispensable equipment in many productions for needing to use steam, by burning fuel, so that
Steam is evaporated, for producing.In the production process of steam, the situation of boiler combustion is to the generation of steam and the utilization of fuel
There is very great influence in rate.It can show that absolute temperature is higher from Arrhenius law, then the speed chemically reacted in boiler
Degree is faster.Therefore when bleed enters in boiler, be both needed to heat air, to improve efficiency of combustion.
Such as the patent that notification number is CN202032602U, a kind of predrying collection that generates electricity of lignite roller flue gas which disclose
Into system, lignite roller flue gas drying system is combined with the boiler combustion system in thermal power plant, includes what is be sequentially connected
Boiler coal-feeding device, boiler, economizer, denitrification apparatus, air preheater, deduster, air-introduced machine and desulfurizer；Also include according to
Lignite coal-feeding device, roller drier, pocket type fine coal collector and the predrying booster fan of secondary connection；The denitrification apparatus
Exhanst gas outlet is also connected with the smoke inlet of roller drier, and the discharge end of roller drier is connected with boiler coal-feeding device,
The outlet of predrying booster fan is connected with the gas approach of desulfurizer.The flue gas partial of boiler is divided to roller drier
It is predrying to the progress of lignite raw material, the fume afterheat of power plant is taken full advantage of, the efficiency of boiler is improved.
The shortcoming of the program is:Pass through external heat, the air for making air preheater preheating enter in boiler, to improve
Efficiency of combustion.External energy need to be consumed again, causes energy consumption big, and cost is high.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of steam for boiler combustion system
Waste-heat recovery device, heat when taking full advantage of boiler combustion, is heated to cold air, is not required to consume outside energy, is reduced energy
While consumption, reduce cost.
To achieve the above object, the invention provides following technical scheme：
A kind of steam waste-heat recovery device for boiler combustion system, including boiler and the cyclone separator that is connected with boiler,
The boiler lower end is connected with the scum pipe for discharging cinder, and the cyclone separator air outlet is connected with discharge pipe, described
Oxygen preheater and air preheater are provided with discharge pipe, described oxygen preheater one end is provided with oxygen hose and the other end is connected with
Hot oxygen pipe, the hot oxygen pipe is fed through boiler and hot oxygen pipe connects boiler, the air preheater back to oxygen preheater one end
One end is connected with the warm-air pipe of connection boiler side walls provided with air hose and the other end.
By using above-mentioned technical proposal, make oxygen and air by entering back into boiler after waste gas heating in discharge pipe
It is interior, so as on the premise of by oxygen and air heating, without the use of outside resources, reduce energy consumption, reduce cost.While oxygen
It is passed through simultaneously in boiler with air, the fuel in boiler can be made more fully to be burnt, its combustion utilization efficiency is improved.
The further setting of the present invention is：The hot oxygen pipe includes being connected to oxygen preheater and wears the master in boiler
Pipe, be connected with supervisor is in being in charge of and with being in charge of the heat exchanger tube being connected of being vertically arranged, and the heat exchanger tube is perpendicular to being in charge of and be in
Annular is set, and the heat exchanger tube two ends are fed through boiler and connected with boiler, described to be in charge of provided with electric control valve, described point
Pipe and heat exchanger tube are equipped with many, and the heat exchanger tube is axially distributed along boiler.
By using above-mentioned technical proposal, heat exchanger tube is set in a ring, so as to increase the contact surface of heat exchanger tube and waste gas
Product, makes cold air and waste gas in heat exchanger tube under phase same rate, more heat exchanges can be carried out, so that entering in boiler
Oxygen temperature is higher, accelerates the speed of combustion reaction.Heat exchanger tube is provided with many, make that air-flow can be evenly with discharge pipe
Waste gas carries out heat exchange, makes the oxygen temperature entered in boiler more uniform, fuel is more stablized and sufficiently burnt,
Improve efficiency of combustion.
And because heat exchanger tube is axially distributed along boiler, and the oxygen of lower section can be moved up due to heat, therefore in heat exchanger tube
Oxygen enter in boiler after, the concentration of the oxygen in boiler is distributed from the bottom to top gradually to thicken, so that fuel exists
Multi-section-combustion is carried out in combustion process.So as to reduce NOX、N2OX、SO2With CO discharge, the pollution to environment is reduced.
The further setting of the present invention is：The both sides of being in charge of are communicated with side for receiving the blow gas out of heat exchanger tube
Pipe, the heat exchanger tube two ends and it is corresponding be in charge of between the side pipe that lower section is in charge of be provided with seal pipe, the sealed tube
Outside side pipe and heat exchanger tube and it is slidably connected to side pipe and heat exchanger tube, the side pipe is used for close side back to being in charge of one end and be provided with
The mechanism for opening/closing that pipe and driving seal pipe are moved towards side pipe.
By using above-mentioned technical proposal, if ambient temperature is relatively low, i.e., oxygen after oxygen preheater is preheated temperature compared with
It is low, then side pipe is opened, while seal pipe connection sealing side pipe and heat exchanger tube, so that the oxygen in heat exchanger tube is changed by one again
Entered back into after the heating of heat pipe in boiler.So that it is guaranteed that too low will not cause to have influence on boiler into the oxygen temperature in boiler
Interior burning.If ambient temperature is higher, i.e., oxygen is that can reach preset temperature by a heat exchanger tube, you can close side pipe, and
Seal pipe is moved towards side pipe, seal pipe is separated with heat exchanger tube, so that oxygen directly enters boiler from heat exchanger tube
It is interior, multi-section-combustion is carried out, combustion rate is improved.
The further setting of the present invention is：The mechanism for opening/closing includes the gear for being embedded in side pipe and being rotationally connected with side pipe
Plate, the drive rod for being coaxially fixedly arranged on the rotating shaft of baffle plate, being threadedly connected to seal pipe, the motor for driving drive rod to rotate
Make the changement of axis of rotation with the output torque direction for unidirectional driving motor.
By using above-mentioned technical proposal, motor changes in changement and back-drives axis of rotation, so as to control gear
Plate goes to the state for closing side pipe from the state for opening side pipe.The drive rod of motor driving simultaneously is rotated, to drive seal pipe
Rotated towards side pipe, so that oxygen is directly entered in boiler by heat exchanger tube, carry out multi-section-combustion.
When oxygen temperature is relatively low, motor is rotated backward, so that flapper closure side pipe, seal pipe is again sealed off connecting
Heat exchanger tube and side pipe are connect, the oxygen in heat exchanger tube is again introduced into next be in charge of and preheating in heat exchanger tube.
The further setting of the present invention is：The ash hole of the cyclone separator is provided with cement output tank, the cement output tank connection
Boiler, and the connection end of the cement output tank and boiler is located at all heat exchanger tubes lower section.
By using above-mentioned technical proposal, boiler is led back so that unburned sufficient fuel be collected, due to these
Not sufficiently combusted fuel has certain remaining temperature, is more easy to be ignited and burns, and can play combustion-supporting effect, makes boiler more stable
Progress burn.It can also improve the ratio for being sufficiently burned fuel simultaneously.
The further setting of the present invention is：The discharge pipe include be connected with cyclone separator air outlet first manage and with
From cyclone separator between oxygen preheater in the second pipe that first pipe is connected back to cyclone separator one end, first pipe
High temperature superheater, low temperature superheater and economizer are sequentially provided with, the oxygen preheater and air preheater are located in the second pipe,
The junction of first pipe and the second pipe is provided with the recovery bucket for being used for reclaiming dust in waste gas, and the recovery bucket is located at the first pipe
With the second pipe lower end, the feed back pipe for being used for importing the dust reclaimed in bucket in boiler is provided between the recovery bucket and boiler.
By using above-mentioned technical proposal, boiler is led back so that unburned sufficient fuel be collected, due to these
Not sufficiently combusted fuel has certain remaining temperature, is more easy to be ignited and burns, and can play combustion-supporting effect, makes boiler more stable
Progress burn.It can also improve the ratio for being sufficiently burned fuel simultaneously.
The further setting of the present invention is：What the feed back pipe included connection recovery bucket is in that Contraband type sets the slow of opening upwards
Deposit the connecting tube towards boiler diagonally downward of pipe, connection caching pipe and boiler.
By using above-mentioned technical proposal so that fuel be stacked into it is a certain amount of after, enter back into boiler, make it can be more
Good help is burnt, and the progress that boiler can be more stable is burnt.
The further setting of the present invention is：The boiler lower end is installed with cooling chamber, and the cooling chamber upper surface is to open up
There is the air distribution plate of several blast caps, the blast cap connection boiler lower surface, the cooling chamber interior walls are provided with water cooling tube, the hot blast
Pipe side is communicated with guide duct, and the guide duct connects cooling chamber back to warm-air pipe one end, and the scum pipe is fed through cooling chamber.
By using above-mentioned technical proposal, so that the sufficient cinder that burns can be smoothed out reclaiming, burning is not interfered with.
The wind in guide duct can push up the not sufficiently combusted or unburned fuel blocked on air distribution plate again simultaneously, participate in combustion
Burn, fuel is more fully utilized.
The further setting of the present invention is：The guide duct is provided with two, and two wind-guiding pipe outer walls are equipped with company
Point airduct of logical boiler side walls, is connected with a point ash pipe, described point of airduct, point ash pipe and wind-guiding between the caching pipe and point airduct
Electronic regulated valve is equipped with pipe.
By using above-mentioned technical proposal, so as to by the electronic regulated valve on regulation point airduct and guide duct, not
In the case of changing wind speed, the wind-force to air distribution plate is adjusted.So that it is guaranteed that fuel can be risen by the wind in guide duct, combustion is participated in
Burn, while preventing due to the stabilization of the excessive influence flame of wind speed.The fuel powder that dividing ash pipe will can cache in pipe introduces a point airduct
In, make have unburned complete particle into the air of boiler, you can the temperature of air is improved, while making the partial air again
It can help to burn.
The further setting of the present invention is：The boiler side, which is provided with to be provided with below run coal bin, the run coal bin, to be used to
The measuring belt of material, the discharge end of the measuring belt is provided with the coal feeding pipe for being used for being fed to boiler, and the air pipe outer wall connects
It is connected to and broadcasts coal cool air hose, described to broadcast feed end of the coal cool air hose one end towards measuring belt, the hot blast pipe outer wall, which is connected with, is broadcast
Coal warm-air pipe, it is described to broadcast coal warm-air pipe other end connection coal feeding pipe.
By using above-mentioned technical proposal, measuring belt can be cooled down by broadcasting coal cool air hose, measuring belt is normally run.Together
When the fuel fallen on measuring belt can be dispelled, make to be mingled with air in fuel, help to burn.Then coal feeding pipe is being entered
Dispelled after interior by the hot-air pre-heating broadcast in coal warm-air pipe, so that it can burn in boiler faster.
The present invention has advantages below：Fuel is set more easily to be ignited, and stable burning；Burning can be improved simultaneously
The pollutants such as nitrogen oxides and sulfide in the speed of reaction and the combustion rate of fuel, reduction discharge waste gas；It is not required to introduce outer
Boundary's energy consumption, need to only be reclaimed to the waste heat of waste gas and function can be achieved.
Brief description of the drawings
Fig. 1 is the structure diagram of embodiment；
Fig. 2 is the structure diagram of embodiment（It is mainly used in embodying measuring belt）；
Fig. 3 is the structure diagram of measuring belt in embodiment；
Fig. 4 is the top view of measuring belt in embodiment；
Fig. 5 is the sectional view of discharge nozzle in embodiment；
Fig. 6 is the partial sectional view of discharge nozzle in embodiment；
Fig. 7 is the sectional view of cooling chamber in embodiment；
Fig. 8 is the partial structurtes sketch of embodiment；
Fig. 9 is the sectional view of snake pipe in embodiment；
Figure 10 is the connection diagram of embodiment snake pipe and hot oxygen pipe；
Figure 11 is the structure diagram of boiler and hot oxygen pipe in embodiment；
Figure 12 is the sectional view of boiler and heat exchanger tube in embodiment（It is not drawn into being in charge of）；
Figure 13 is the sectional view of hot oxygen pipe in embodiment；
Figure 14 is the structural representation of hot oxygen pipe in embodiment（It is mainly used in embodying mechanism for opening/closing）；
Figure 15 is the enlarged drawing at A in Figure 14.
Reference：1st, run coal bin；2nd, boiler；3rd, cyclone separator；4th, electric cleaner；5th, desulfurizer；6th, chimney；7、
First discharge bucket；8th, measuring belt；9th, rotating roller；10th, the first motor；11st, the second discharge bucket；12nd, coal feeding pipe；13rd, lime silo；
14th, discharge nozzle；15th, condiment chamber；16th, adjustment disk；17th, servomotor；18th, storing tooth；19th, stock chest；20th, cooling chamber；21st, cloth
Aerofoil；22nd, blast cap；23rd, airduct；24th, conical lid；25th, air admission hole；26th, water cooling tube；27th, scum pipe；28th, slag cooler；29th, put
Slag pipe；30th, cement output tank；31st, discharge pipe；32nd, the first pipe；33rd, the second pipe；34th, high temperature superheater；35th, low temperature superheater；36、
Economizer；37th, oxygen preheater；38th, air preheater；39th, snake pipe；40th, anti-acid ceramic layer；41st, sealing ring；42nd, oxygen
Tracheae；43rd, hot oxygen pipe；44th, oxygen blower fan；45th, it is responsible for；46th, it is in charge of；47th, heat exchanger tube；48th, side pipe；49th, seal pipe；50th, open
Close mechanism；51st, baffle plate；52nd, rotating shaft；53rd, drive rod；54th, motor；55th, changement；56th, first bevel gear；57th,
Two bevel gears；58th, air hose；59th, warm-air pipe；60th, air blower；61st, guide duct；62nd, airduct is divided；63rd, coal cool air hose is broadcast；
64th, coal warm-air pipe is broadcast；65th, bucket is reclaimed；66th, feed back pipe；67th, caching pipe；68th, connecting tube；69th, ash pipe is divided.
Embodiment
The present invention will be further described referring to the drawings.
As shown in figure 1, a kind of boiler combustion system with steam waste-heat recovery device, successively including run coal bin 1, boiler
2nd, cyclone separator 3, electric cleaner 4, desulfurizer 5 and chimney 6.
As depicted in figs. 1 and 2, run coal bin 1 is provided with several.The lower end of run coal bin 1 is provided with the first discharge bucket 7, the first discharging
Struggle against and valve is provided with 7 lower ending openings.As shown in Figures 2 and 3, the lower end of the first discharge bucket 7 is provided with measuring belt 8 and rotating roller 9.Such as
Shown in Fig. 3 and Fig. 4, measuring belt 8 is sheathed on outside rotating roller 9, and rotating roller 9 is provided with two, respectively positioned at 8 liang of measuring belt
End.Wherein one one end of rotating roller 9 is coaxially installed with the first motor 10.First motor 10 driving rotating roller 9 is rotated, so as to drive
Measuring belt 8 is rotated.
As shown in Fig. 2 the fuel being provided with below the discharge end of measuring belt 8 on the second discharge bucket 11, measuring belt 8 can fall
Enter in the second discharge bucket 11.The lower end of second discharge bucket 11 is connected with coal feeding pipe 12, and coal feeding pipe 12 connects the second discharge bucket 11.Enter coal
Pipe 12 is tilted down back to the one end of the second discharge bucket 11, and connection boiler 2.
As shown in Fig. 2 the side of run coal bin 1 is provided with lime silo 13, the lower surface of lime silo 13 is connected with discharge nozzle 14, discharge nozzle
14 are located at the top of measuring belt 8.As shown in Figure 5 and Figure 6, the middle part of discharge nozzle 14 is expanded outwardly forms condiment chamber 15, condiment chamber 15
In collar plate shape, the central axis of condiment chamber 15 is in the central shaft of discharge nozzle 14.Condiment chamber 15 is embedded with adjustment disk 16, adjustment disk
16 are rotationally connected with discharge nozzle 14.Servomotor 17 is installed with outside discharge nozzle 14, servomotor 17 is coaxially fixedly arranged on regulation
Disk 16, can drive adjustment disk 16 to be rotated relative to discharge nozzle 14.
As shown in figure 5, the outer wall of adjustment disk 16 is installed with storing tooth 18, storing tooth 18 is connected to condiment chamber 15, storing tooth 18
Several are circumferentially with along adjustment disk 16, two adjacent formation stock chests 19 of storing tooth 18.The both sides side wall of adjustment disk 16 is abutted
In the inwall of condiment chamber 15.
As shown in figure 1, the lower end of boiler 2 is installed with cooling chamber 20.As shown in fig. 7, lid sets fixation at the upper shed of cooling chamber 20
Have and some blast caps 22 are installed with air distribution plate 21, air distribution plate 21.Blast cap 22 includes airduct 23 and is fixedly arranged on the cone of the upper end of airduct 23
Shape lid 24.Airduct 23 connects cooling chamber 20 and is fed through the lower surface of boiler 2.The outer wall of airduct 23 is provided with several air admission holes 25, and
Air admission hole 25 is located in boiler 2.The inwall of cooling chamber 20 is provided with water cooling tube 26.The lower surface of boiler 2 is connected with scum pipe 27, scum pipe
27 are fed through cooling chamber 20.As shown in figure 8, scum pipe 27 is provided with valve, the lower end of scum pipe 27 is connected with slag cooler 28.Deslagging
The outer wall of pipe 27 is connected with slag-discharge pipe 29, and slag-discharge pipe 29 is provided with valve.
As shown in figure 1, the gas outlet of boiler 2 is connected to the air inlet of cyclone separator 3.The ash hole of cyclone separator 3
Provided with cement output tank 30, cement output tank 30 is set diagonally downward back to the one end of cyclone separator 3, and the connection side wall of boiler 2.Cyclonic separation
The air outlet of device 3 is provided with discharge pipe 31.Discharge pipe 31 includes the first pipe 32 and the second pipe 33.First pipe 32 and cyclone separator 3
Air outlet be connected, the second pipe 33 is connected to the first pipe 32 back to the one end of cyclone separator 3.First pipe 32 and the second pipe 33 are in
L-type.High temperature superheater 34, low temperature superheater 35 and economizer 36 are sequentially provided with first pipe 32.
As shown in figure 1, being provided with oxygen preheater 37 and air preheater 38 in the second pipe 33.As shown in figure 1, oxygen is preheated
Device 37 and air preheater 38 are snake pipe 39.As shown in Figure 9 and Figure 10, snake pipe 39 is made of stainless steel, snakelike
The wall thickness of pipeline 39 is gradually thickening from the bottom to top.Edge on anti-acid ceramic layer 40, anti-acid ceramic layer 40 is installed with outside snake pipe 39
It is circumferentially with sealing ring 41.
As shown in figure 1, the corresponding two ends of snake pipe 39 of oxygen preheater 37 are arranged with oxygen hose 42 and hot oxygen pipe respectively
43.As shown in Fig. 1 and Figure 10, oxygen hose 42 and hot oxygen pipe 43 are threadedly connected to snake pipe 39, and are in sealing ring 41
It is full of cooperation.As shown in figure 1, oxygen hose 42 is fed through the second pipe 33 back to the one end of snake pipe 39, and it is installed with for sending oxygen
Oxygen blower fan 44.
As shown in figure 11, hot oxygen pipe 43 includes supervisor 45, is in charge of 46 and heat exchanger tube 47.Supervisor 45 is connected to oxygen preheater
37, it is in charge of 46 and is vertical setting and is connected to supervisor 45 back to the one end of oxygen preheater 37, is in charge of 46 and is provided with electric control valve.
Heat exchanger tube 47 is connected with being in charge of 46 lower ends.As shown in figure 12, heat exchanger tube 47 is set in a ring, and the two ends of heat exchanger tube 47 are fed through pot
Stove 2 and connected with boiler 2.As shown in figure 11, be in charge of 46 and heat exchanger tube 47 be equipped with many, heat exchanger tube 47 along boiler 2 axially point
Cloth.All heat exchanger tubes 47 are respectively positioned on the top of cement output tank 30.
As shown in figure 13, it is in charge of 46 both sides and is connected with the side pipe 48 that connection is in charge of 46, the wind that heat exchanger tube 47 is blown out can be flowed into
In side pipe 48.Seal pipe 49 is provided between the two ends of heat exchanger tube 47 and corresponding side pipe 48, seal pipe 49 is sheathed on side pipe 48
Outer and be slidably connected to side pipe 48 and heat exchanger tube 47 with heat exchanger tube 47, seal pipe 49 is matched somebody with somebody with heat exchanger tube 47 and side pipe 48 in interference
Close.Side pipe 48 is provided with mechanism for opening/closing 50 back to 46 one end are in charge of.
As shown in Figure 14 and Figure 15, mechanism for opening/closing 50 includes baffle plate 51, rotating shaft 52, drive rod 53, motor 54 and changed
To mechanism 55.Motor 54 is fixedly installed in side pipe 48, and the one end of drive rod 53 is coaxially fixed on motor 54.And drive rod
53 other ends are threadedly connected to seal pipe 49, and parallel to seal pipe 49.The output shaft fixed sleeves of motor 54 are provided with the
One bevel gear 56.Baffle plate 51 is embedded in side pipe 48 and sealing side pipe 48.Rotating shaft 52 is fed through baffle plate 51 and side pipe 48, and is connected
In baffle plate 51, baffle plate 51 is set to be rotationally connected with side pipe 48.The one end of rotating shaft 52 is installed with second bevel gear 57, second bevel gear 57 with
First bevel gear 56 is engaged.First bevel gear 56 and second bevel gear 57 form changement 55.
As shown in Figure 14 and Figure 15, motor 54 is rotated, make after changement 55 drive shaft 52 rotate, from
And drive baffle plate 51 to open.Now drive rod 53 is also rotated under the drive of motor 54, drives seal pipe 49 towards side pipe
48 motions, leave heat exchanger tube 47.If motor 54 is rotated backward, the sealing side pipe 48 of baffle plate 51, the connection side pipe of seal pipe 49
48 and heat exchanger tube 47.
As shown in figure 1, the corresponding two ends of snake pipe 39 of air preheater 38 are arranged with air hose 58 and warm-air pipe respectively
59, air hose 58 and warm-air pipe 59 are threadedly connected to snake pipe 39, and with sealing ring 41 in interference fit.Air hose 58 is carried on the back
The second pipe 33 is fed through to the one end of snake pipe 39, and is installed with the air blower 60 for sending air.
As shown in figure 8, the side of warm-air pipe 59 is communicated with guide duct 61, guide duct 61 is connected back to the one end of warm-air pipe 59 and cooled down
Room 20, guide duct 61 is provided with two, and two outer walls of guide duct 61 are equipped with point airduct 62 of the connection side wall of boiler 2.
As shown in figure 1, the outer wall of air hose 58 is connected with and broadcasts coal cool air hose 63, broadcast the one end of coal cool air hose 63 and extend to metering skin
Band 8, and towards the feed end of measuring belt 8.The outer wall of warm-air pipe 59, which is connected with, broadcasts coal warm-air pipe 64, broadcasts coal warm-air pipe 64 back to heat
The one end of airduct 59 connects coal feeding pipe 12, and towards boiler 2.
As shown in figure 1, the junction of the first pipe 32 and the second pipe 33 is provided with bucket 65 is reclaimed, reclaims bucket 65 and be located at the first pipe 32
Below lower end and below the upper end of the second pipe 33.Feed back pipe 66 is provided between bucket 65 and boiler 2 as shown in figure 8, reclaiming.Feed back pipe 66
Including caching pipe 67 and connecting tube 68.Cache the Contraband type that the axis of pipe 67 is opening upwards.Cache the connection of the one end of pipe 67 and reclaim bucket 65
Lower section.Connecting tube 68 is connected to the caching other end of pipe 67.Connecting tube 68 is tilted down settings with respect to the one end of boiler 2, and connects
Boiler 2.
As shown in figure 8, caching pipe 67 has been cached by unburned in the waste gas for reclaiming the first pipe of process 32 that bucket 65 is collected
Fuel, after being stored to a certain degree, imported by connecting tube 68 in boiler 2.It is connected between caching pipe 67 and point airduct 62 point
Electronic regulated valve is equipped with ash pipe 69, point airduct 62, point ash pipe 69 and guide duct 61.
As shown in figure 1, the outlet air end of discharge pipe 31 is connected to electric cleaner 4, the outlet air end of electric cleaner 4 is connected to desulfurization dress
Put 5.The outlet air end of desulfurizer 5 is connected to chimney 6.
The principle of the combustion system of boiler 2 is as follows：
1st, fuel 8 from raw material warehouse discharging to measuring belt on, while pulverized limestone also discharges onto measuring belt 8, mixed with fuel,
Can be by controlling the rotating speed and rotational angle of the first motor 10 to control the discharging speed and load of pulverized limestone；
And broadcast coal cool air hose 63 and can blow fuel and pulverized limestone, make have more air between fuel, facilitate it to burn；Simultaneously
Measuring belt 8 can be cooled down, operation is stabilized it；
2nd, measuring belt 8 drives fuel and pulverized limestone to enter in coal feeding pipe 12, broadcasts coal warm-air pipe 64 and drives fuel to enter pot
In stove 2, burnt, while preheated to fuel again, facilitate it to be ignited；
3rd, the waste gas produced after lighting is discharged in cyclone separator 3, and after its separation, the fuel isolated is by cement output tank 30
Boiler 2 is led back to, proceeds burning, waste gas is discharged by discharge pipe 31；
4th, waste gas passes through electric cleaner 4, removes the granule dust in waste gas, and desulfurizer 5 is then passed through again, waste gas is taken off
Sulphur, is eventually connected to chimney 6, discharge.
5th, in above process, oxygen by oxygen preheater 37 and hot oxygen pipe 43 absorb out the waste heat being in charge of in 46 and
Entered after heat in boiler 2 in boiler 2, it is ensured that the lasting progress of burning；
And because oxygen is to be passed through by many heat exchanger tubes 47 in boiler 2, therefore the oxygen concentration in boiler 2 to it is lower and on gradually become
Height, realizes multi-section-combustion, reduces the discharge of nitrogen oxides；
If oxygen temperature is too low, the driving baffle plate 51 of motor 54 is turned on, and the connection side pipe 48 of seal pipe 49 and heat exchanger tube 47 make oxygen
Gas is passed through in boiler 2 again after being exchanged heat through excessive root heat exchanger tube 47；
6th, while hot gas blows afloat the fuel on the bottom surface air distribution plate 21 of boiler 2, it is made to participate in burning；Cinder after having burnt
Entered in cooling chamber 20, be discharged into after water cooling tube 26 and hot blast tentatively cooling in slag cooler 28 by blast cap 22；If cold slag
Device 28 is damaged, directly can be discharged the cinder in boiler 2 by slag-discharge pipe 29.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of steam waste-heat recovery device for boiler combustion system, including boiler（2）With with boiler（2）The whirlwind of connection
Separator（3）, the boiler（2）Lower end is connected with the scum pipe for discharging cinder（27）, it is characterized in that：The cyclonic separation
Device（3）Air outlet is connected with discharge pipe（31）, the discharge pipe（31）It is interior to be provided with oxygen preheater（37）And air preheater
（38）, the oxygen preheater（37）One end is provided with oxygen hose（42）And the other end is connected with hot oxygen pipe（43）, the hot oxygen pipe
（43）It is fed through boiler（2）And hot oxygen pipe（43）Back to oxygen preheater（37）One end connects boiler（2）, the air preheater
（38）One end is provided with air hose（58）And the other end is connected with connection boiler（2）The warm-air pipe of side wall（59）.
2. a kind of steam waste-heat recovery device for boiler combustion system according to claim 1, it is characterized in that：It is described
Hot oxygen pipe（43）Including being connected to oxygen preheater（37）And wear into boiler（2）Interior supervisor（45）And supervisor（45）Connection
In being in charge of of being vertically arranged（46）With with being in charge of（46）Connected heat exchanger tube（47）, the heat exchanger tube（47）Perpendicular to being in charge of
（46）And set in a ring, the heat exchanger tube（47）Two ends are fed through boiler（2）And and boiler（2）Connection, it is described to be in charge of（46）
Electric control valve is provided with, it is described to be in charge of（46）And heat exchanger tube（47）It is equipped with many, the heat exchanger tube（47）Along boiler（2）Axle
To distribution.
3. a kind of steam waste-heat recovery device for boiler combustion system according to claim 2, it is characterized in that：It is described
It is in charge of（46）Both sides are communicated with for receiving from heat exchanger tube（47）The side pipe of interior blow gas（48）, the heat exchanger tube（47）Two ends
It is in charge of with corresponding（46）It is in charge of lower section（46）On side pipe（48）Between be provided with seal pipe（49）, the seal pipe（49）
It is sheathed on side pipe（48）And heat exchanger tube（47）It is outer and be slidably connected to side pipe（48）And heat exchanger tube（47）, the side pipe（48）Back to
It is in charge of（46）One end, which is provided with, to be used to close side pipe（48）With driving seal pipe（49）Towards side pipe（48）The mechanism for opening/closing of motion
（50）.
4. a kind of steam waste-heat recovery device for boiler combustion system according to claim 3, it is characterized in that：It is described
Mechanism for opening/closing（50）Including being embedded at side pipe（48）It is interior and be rotationally connected with side pipe（48）Baffle plate（51）, be coaxially fixedly arranged on baffle plate
（51）Rotating shaft（52）, be threadedly connected to seal pipe（49）Drive rod（53）, for driving drive rod（53）The driving of rotation
Motor（54）With for unidirectional driving motor（54）Output torque direction make rotating shaft（52）The changement of rotation（55）.
5. a kind of steam waste-heat recovery device for boiler combustion system according to claim 4, it is characterized in that：It is described
Cyclone separator（3）Ash hole be provided with cement output tank（30）, the cement output tank（30）Connect boiler（2）, and the cement output tank
（30）With boiler（2）Connection end be located at all heat exchanger tubes（47）Lower section.
6. a kind of steam waste-heat recovery device for boiler combustion system according to claim 5, it is characterized in that：It is described
Discharge pipe（31）Including with cyclone separator（3）The first pipe that air outlet is connected（32）Managed with first（32）Back to cyclonic separation
Device（3）Second pipe of one end connection（33）, first pipe（32）It is interior from cyclone separator（3）To oxygen preheater（37）Between
It is sequentially provided with high temperature superheater（34）, low temperature superheater（35）And economizer（36）, the oxygen preheater（37）It is pre- with air
Hot device（38）Positioned at the second pipe（33）It is interior, first pipe（32）With the second pipe（33）Junction be provided be used for reclaim in waste gas
The recovery bucket of dust（65）, it is described to reclaim bucket（65）Positioned at the first pipe（32）With the second pipe（33）Lower end, the recovery bucket（65）
And boiler（2）Between be provided be used for by reclaim struggle against（65）Interior dust imports boiler（2）Interior feed back pipe（66）.
7. a kind of steam waste-heat recovery device for boiler combustion system according to claim 6, it is characterized in that：It is described
Feed back pipe（66）Bucket is reclaimed including connection（65）In Contraband type set opening upwards caching pipe（67）, connection caching pipe（67）With
Boiler（2）Towards boiler（2）Connecting tube diagonally downward（68）.
8. a kind of steam waste-heat recovery device for boiler combustion system according to claim 7, it is characterized in that：It is described
Boiler（2）Lower end is installed with cooling chamber（20）, the cooling chamber（20）Upper surface is to offer several blast caps（22）Cloth wind
Plate（21）, the blast cap（22）Connect boiler（2）Lower surface, the cooling chamber（20）Inwall is provided with water cooling tube（26）, the heat
Airduct（59）Side is communicated with guide duct（61）, the guide duct（61）Back to warm-air pipe（59）One end connects cooling chamber（20）,
The scum pipe（27）It is fed through cooling chamber（20）.
9. a kind of steam waste-heat recovery device for boiler combustion system according to claim 8, it is characterized in that：It is described
Guide duct（61）Provided with two, and two guide ducts（61）Outer wall is equipped with connection boiler（2）Point airduct of side wall（62）,
The caching pipe（67）With a point airduct（62）Between be connected with a point ash pipe（69）, described point of airduct（62）, point ash pipe（69）With lead
Airduct（61）On be equipped with electronic regulated valve.
10. a kind of steam waste-heat recovery device for boiler combustion system according to claim 9, it is characterized in that：Institute
State boiler（2）Side is provided with run coal bin（1）, the run coal bin（1）Lower section is provided with the measuring belt for discharging（8）, the meter
Measure belt（8）Discharge end be provided be used for be fed to boiler（2）Coal feeding pipe（12）, the air hose（58）Outer wall, which is connected with, to be broadcast
Coal cool air hose（63）, it is described to broadcast coal cool air hose（63）One end is towards measuring belt（8）Feed end, the warm-air pipe（59）Outer wall
It is connected with and broadcasts coal warm-air pipe（64）, it is described to broadcast coal warm-air pipe（64）The other end connects coal feeding pipe（12）.
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| CN107166373B (en) | 2018-12-21 |
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Effective date of registration: 20190903 Address after: 311228 No. 3999 Changfeng Road, Linjiang Street, Dajiangdong Industrial Agglomeration Area, Hangzhou, Zhejiang Province Patentee after: Hangzhou Fulida Thermal Power Co., Ltd. Address before: 311228 Xiaoshan Farm, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Jiangdong Fulida Thermal Power Co. Ltd. |
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