CN106402845A - Boiler burning system - Google Patents
Boiler burning system Download PDFInfo
- Publication number
- CN106402845A CN106402845A CN201610970457.4A CN201610970457A CN106402845A CN 106402845 A CN106402845 A CN 106402845A CN 201610970457 A CN201610970457 A CN 201610970457A CN 106402845 A CN106402845 A CN 106402845A
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- Prior art keywords
- coal
- air
- boiler
- airduct
- combustion system
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Classifications
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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
- 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
- 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
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/10—Under-feed arrangements
- F23K3/14—Under-feed arrangements feeding by screw
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/101—Pulverizing to a specific particle size
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
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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
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a boiler burning system, which can return part of ash to a boiler through an ash returning device, and the other part of ash is discharged from an ash outlet, so as to achieve control over an ash returning amount, in addition, through arranging an air tube, heat of tailgas is absorbed and is returned back to a charging system for heating coal, the coal can be preheated, air of an igniter can be preheated, the igniter can be ignited more easily, and the other part is flushed and comes back to the boiler, such that the air entering the boiler is air instead of cold air, preheating is not required, no damage is generated to the boiler, loss of burning heat of the coal is reduced, and a use rate of the heat energy is improved.
Description
Technical field
A kind of a kind of the present invention relates to field of combustion equipment, more specifically, it relates to boiler combustion system.
Background technology
Boiler is to need an indispensable equipment in the production use steam in many, by burning fuel, will steam
Send steam to be produced, and steam is during producing, the utilization of the generation to steam of the situation of boiler combustion and fuel
There is very great impact in rate.
The Chinese patent of Publication No. CN104315505A discloses a kind of CFBB, including furnace chamber, returning charge
Device and be sequentially arranged combustor, cyclone separator, back-end ductwork from front to back, burner hearth is the water-cooling wall of full suspention, water-cooling wall
Blast cap is evenly arranged on air distribution plate, suspention above back-end ductwork has high temperature superheater；Low temperature superheater, economizer, sky are pre-
Device is supporting construction；Boiler adopts full steel frame construction, and stokehold is provided with four rows' row's columns backward altogether it is characterised in that described blast cap
Be changed to little bell-type windshield, blast cap upper end is connected with a blast cap head by chuck, present configuration rationally it is easy to change blast cap,
Thoroughly solve the problems, such as blast cap abrasion and air compartment ash discarding, and stable to wind, returning charge is stable, can guarantee that whole combustion system is run
Steadily, although this boiler combustion can be circulated, its all of residue is all back in boiler, therefore, one
Determine in degree, the ratio of coal ash and coal is difficult to control to, therefore, burning of coal speed is difficult to control, meanwhile, the detached coal of separator
Ash is partly larger, and during returning charge, this part coal ash is not suitable for being mixed with coal, and it can destroy the uniform of coal and coal ash
Degree, therefore, causes coal combustion efficiency and speed to be difficult to the problem of control.
Content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of boiler combustion system, it is to solve
The certainly control of boiler combustion speed and the problem of heat energy efficient utilization.
For achieving the above object, the invention provides following technical scheme：A kind of boiler combustion system, including boiler and
It is placed in the air compartment below boiler, described boiler is connected with charging system near air compartment position, described air compartment connects lighter, described
The afterbody of boiler is connected with cyclone separator, and described cyclone separator includes extraction opening, air outlet and ash hole, extraction opening with
Boiler tail connects, and air outlet is connected with exhaust gas processing device, and ash hole position is provided with back apparatus for ash, described exhaust gas processing device
It is provided with airduct, described airduct is connected with charging system, boiler and lighter respectively.
By adopting technique scheme, partly ash is allowed to return to boiler by returning apparatus for ash, in addition part is from ash hole row
Going out, thus reaching back the control of ash quantity, in addition, by arranging airduct, the heat of tail gas is absorbed, and returning to charging system
System heats to coal, coal can be preheated, in addition the wind of lighter is preheated, lighter can be allowed to be more prone to a little
Combustion, another part is rinsed and is returned to boiler, to so that the air that boiler enters is not cold air it is not necessary to preheating, will not
Boiler is produced and damages, also can reduce the loss of coal combustion heat simultaneously, improve the utilization rate of heat energy.
The present invention is more preferably：Coal chute that described charging system includes being connected with boiler, it is used for holding fuel
Coal bunker and the quantitative conveyer connecting coal bunker and coal chute respectively, described quantitative conveyer one end connects coal bunker, separately
One end is connected with material blanking tube.
By adopting technique scheme, coal is delivered directly to boiler by coal chute, and quantitative conveyer will be from coal bunker
Position carries out being transported to material blanking tube, thus reaching the purpose controlling the amount of delivering coal.
The present invention is more preferably：Described quantitative conveyer includes shell and the conveying being arranged on inside the shell
Band, conveyer belt one end connects coal bunker, and the other end connects material blanking tube, and described material blanking tube position is provided with for combustion is poured material blanking tube
Jet pipe, described material blanking tube is provided with feeding controller.
By adopting technique scheme, by the setting of jet pipe, coal absorption can be sent to material blanking tube, and then prevent
Coal is returned by the air-flow recoil in boiler.
The present invention is more preferably：Described jet pipe is connected with airduct, and described material blanking tube is set with the position of cage connection
There is coal feeding bucket, described jet pipe stretches into coal feeding bucket.
The present invention is more preferably：Described coal bunker is connected with destructor, and described destructor includes being connected with coal bunker
Rotating shaft in mounting cylinder, mounting cylinder and raised item, described raised item is fixed in rotating shaft in the shape of a spiral, raised item and mounting cylinder
There is gap in inwall.
By adopting technique scheme, destructor is pulverized to coal, and the spiral setting of raised item can play broken coal
Effect with transmission coal.By the gap of raised item and mounting cylinder, reach the effect of broken coal.
The present invention is more preferably：Be connected with, on described coal chute, airduct of delivering coal, deliver coal be in charge of be provided with coal airduct with
And cool air hose, described warm-air pipe is connected with airduct, and described cool air hose and warm-air pipe are equipped with electromagnetic valve.
By adopting technique scheme, the temperature of airduct of delivering coal can not be too high, and too high temperature can cause shadow to coal
Ring.And air control system of typically delivering coal in 100 degrees centigrade it is therefore desirable to its temperature is adjusted by warm-air pipe and cool air hose,
In addition, the temperature in summer and winter is different from, accordingly, it would be desirable to control the amount of air intake, reach the mesh controlling internal temperature balance
's.
The present invention is more preferably：Described exhaust gas processing device include connect cyclone separator heat exchanger tube with change
Cleaner unit and the desulfurizing tower of air of extraction cleaner unit and the smokestack discharging air that heat pipe connects, described airduct wears
On heat exchanger tube.
By adopting technique scheme, the heat of tail gas is absorbed by heat exchanger tube, and the cleaner unit that can be is entered
Exhaust temperature relative reduction, such that it is able to weaken the damage to cleaner unit for the high temperature, in addition, carrying out desulfurization and discharge, reduces temperature
Room effect.
The present invention is more preferably：Described airduct includes air intake, outlet air end and is arranged on changing on heat exchanger tube
Hot portion, heat exchanging part includes collecting syncephalon and tubule, and described tubule two ends are provided with described collection syncephalon, and collection syncephalon is provided with connecting hole
And dividing hole, described tubule is plugged on a point in the hole, and described connecting hole is connected with air intake or outlet air end respectively.
By adopting technique scheme, the air of airduct is shunted by point hole and tubule, thus contact area is big, changes
The thermal efficiency is high.
The present invention is more preferably：Described outlet air end be provided with some be in charge of, and be in charge of and be equipped with flow measuring meter
And flow control valve.
By adopting technique scheme, by being in charge of, the air after heat is sent to specified location, likewise, each
The amount of the air that position needs is different, and temperature is different, therefore, controls flow by flow measuring meter and flow control valve, reaches
To the purpose controlling temperature and quantity delivered.
The present invention is more preferably：Described cyclone separator is provided with and melts down pipeline, and described pipe ends of melting down are divided
Do not connect with boiler and cyclone separator, described cyclone separator is provided with returning charge gas tube, described returning charge gas tube with return
Boiler tube road is oppositely arranged, and described returning charge gas tube is connected with being in charge of.
By adopting technique scheme, by returning charge gas tube, control the air pressure melting down pipeline, thus controlling backflow
Flow and flow velocity, reach the purpose controlling coal ash amount.
Brief description
Fig. 1 is the system construction drawing of the present embodiment；
Fig. 2 is the charging system structure chart of the present embodiment；
Fig. 3 a is the structure chart of destructor；
Fig. 3 b is the sectional view of the first structure of raised item；
Fig. 3 c is the sectional view of the second structure of raised item；
Fig. 4 is the enlarged drawing at A in Fig. 2；
Fig. 5 is deliver coal airduct warm-air pipe and cool air hose joint position structure figure；
Fig. 6 is airduct temperature-control circuit figure of delivering coal；
Fig. 7 is to melt down pipeline location structure chart；
Fig. 8 is the structure chart of heat exchanger tube position；
Fig. 9 is the structure chart of heat exchanging part；
Figure 10 a is set header structure figure；
Figure 10 b is enlarged drawing at the B in Fig. 9.
Reference：1st, boiler；2nd, air compartment；3rd, charging system；31st, coal bunker；32nd, material blanking tube；33rd, destructor；331st, pacify
Fitted tube；332nd, rotating shaft；333rd, raised item；334th, gap；34th, quantitative conveyer；341st, shell；342nd, conveyer belt；35th, defeated coal
Pipe；351st, coal feed point；352nd, the first plate；36th, deliver coal airduct；361st, cool air hose；362nd, warm-air pipe；37th, jet pipe；4th, whirlwind divides
From device；41st, ash hole；5th, exhaust treatment system；51st, heat exchanger tube；52nd, cleaner unit；53rd, desulfurizing tower；54th, smokestack；6th, lighter；
7th, fuel transfer system；8th, airduct；81st, air intake；82nd, heat exchanging part；821st, collect syncephalon；822nd, connecting hole；823rd, sealing member；824th, close
Sealing of hole；825th, tubule；826th, divide hole；827th, external member；828th, elastic component；829th, seal groove；83rd, outlet air end；84th, flow measurement
Meter；85th, flow control valve；9th, returning charge structure；91st, export；92nd, melt down pipeline；93rd, instead expect gas tube；95th, air gun；96th, filter
Net；97th, shutter；98th, the first electromagnetic valve；010th, control device；020th, blender；100th, temperature sensor；200th, relatively more electric
Road；201st, phase inverter；300th, on-off circuit；400th, valve element motor.
302、301：Photo-coupler；
R1、R2、R3、R4、Rf：Resistance；
D1、D2：Diode；
Q1、Q2：Audion；
M1、M2：Switching tube；
A1、A2：Comparator；
Ks1、Ks2：Relay；
V0：The signal of telecommunication；
V1：First comparison signal；V2：Second comparison signal；
Vs1：First judges signal：Vs2：Second judges signal.
Specific embodiment
With reference to the accompanying drawings and examples, describe the present invention.
A kind of boiler combustion system, as shown in figure 1, including boiler 1, boiler 1 bottom is provided with air compartment 2, and boiler 1 is close
Air compartment 2 position is provided with charging system 3, and boiler 1 is connected with cyclone separator 4, is provided with exhaust treatment system in cyclone separator 4 tail end
5, air compartment 2 is connected with ignition system, is connected with heat circulating system in exhaust treatment system 5, heat circulating system respectively with boiler 1, rotation
Wind separator 4, ignition system and charging system 3 connect.By charging system 3, boiler 1 is fed, subsequently pass through air compartment 2
The lighter 6 put is lighted a fire, and passes through air compartment 2, and the fuel lighted is blown afloat, and allows it to rise, is flowed in boiler 1
Dynamic, allow coal combustion become dynamic burning by the resting state of script, thus coal combustion is more abundant.After burned, then
By cyclone separator 4, the sweep gas mixture after burning is detached, be then peeled off into tail gas and coal ash, flow out respectively and carry out
Subsequent treatment, coal ash a part discharge, another part pass through returning charge structure 9 counter enter boiler 1 in, tail gas enters into vent gas treatment system
System 5 enters in air after being processed.
As shown in Fig. 2 charging system 3 includes coal bunker 31, quantitative conveyer 34 and coal chute 35.Coal bunker 31 storage combustion
Material coal, and put into and conveyed on quantitative conveyer 34, then go through coal chute 35 and import in boiler 1.In conveying
The interlude of pipe is provided with airduct 36 of delivering coal, and air is passed in coal chute 35 airduct 36 of delivering coal, and is that the coal in coal chute 35 carries
For certain thrust, coal is pushed in boiler 1, meanwhile, coal can be carried out loose, thus entering into boiler 1 in coal by air
When interior, the coal that can will be fed into is washed open, thus allowing coal to be mixed with original coal in boiler 1 and relatively equal
Even mixing.Quantitative conveyer 34 arranges jet pipe 37, the coal in quantitative conveyer 34 is sent in coal chute 35,
Meanwhile, by jet pipe 37 is directly toward coal chute 35, air enters directly in coal chute 35, and coal is sucked.Coal chute 35
It is provided with coal feed point 351, coal feed point 351 is connected with quantitative conveyer 34.Quantitative conveyer 34 includes shell 341 and peace
It is contained in the conveyer belt 342 in shell 341, the material blanking tube 32 of coal bunker 31 is arranged at the input of conveyer belt 342, coal feed point 351 sets
It is placed in the outfan of conveyer belt 342, the first plate 352 is provided with material blanking tube 32, for controlling the amount of the coal of material blanking tube 32.
Second plate is set in coal feed point 351 position, controls the coal-feeding quantity of coal chute 35, the second plate passes through Motor drive.
It is connected with destructor 33 in coal bunker 31, destructor 33 includes rotating shaft 332, the raised item 333 being arranged in rotating shaft 332
And the mounting cylinder 331 of rotating shaft 332 is installed, Motor drive is passed through in rotating shaft 332, and raised item 333 is fixed on rotating shaft 332 in the shape of a spiral
On.There is gap 334 between the inwall of mounting cylinder 331 and raised item 333, and gap 334 width is from away from material blanking tube 32 position
It is gradually reduced setting near material blanking tube 32 position, allows coal after entering mounting cylinder 331, the degree that its extruding is pulverized gradually increases
Plus such that it is able to allow slightly bigger coal group first pass through the mark that preliminary crushing is further pulverized and reached burning
Accurate.Setting at an angle between mounting cylinder 331 and material blanking tube 32, general angle between 90-180 °, rotating shaft for convenience
332 and drive shaft 332 rotate motor installation, be traditionally arranged to be 135 °, can facilitate coal fall, simultaneously also can be square
Just motor is installed.The position entering mounting cylinder 331 in coal is provided with the 3rd plate, adjusts the speed entering coal in mounting cylinder 331.Convex
The section playing bar 333 arranges structure triangular in shape, and so, when pulverizing, the structure of raised item 333 is relatively strong, will not be easily
Deform upon, during pulverizing, can have a spigot surface（The surface of triangle, gap 334 is in raised rib and mounting cylinder 331
The distance of wall）, spigot surface can be arranged in cambered surface, allows coal when pulverizing, the opening entering before gap 334 is larger, is easily accessible,
By the setting of cambered surface, its extruding force moment becomes big, thus coal group is carried out with extruding pulverizing, the efficiency high of pulverizing.
Ignition system includes the lighter 6 being arranged on air compartment 2 both sides, the oil pipe conveying the fuel oil lighted a fire for lighter 6
And the oil tank for oil pipe fuel feeding, it is provided with oil pump in oil tank, is oil pipe fuel feeding, oil pipe is provided with choke valve, the confession of oil circuit control
Oily size, lighter 6 is further connected with air supply pipe, carry out mixing by lighter 6 and the oil of oil pipe carry out spraying formed air mixture,
Light finally by lighter 6, reach the purpose of a combusting boiler 1, the lighter 6 principle phase on this lighter 6 and internal combustion engine
With.Enter the position setting oil return pipe of lighter 6 in oil pipe, unnecessary oil is back in oil tank by oil return pipe.
Air compartment 2 is arranged on boiler 1 bottom, and lighter 6 is arranged on air compartment 2 simultaneously, and air compartment 2 is connected with blast pipe 8, leads to
Cross blast pipe 8 by filling air in air compartment 2, the coal of boiler 1 bottom is blown afloat, and blows upwards, thus allowing coal in boiler 1
Flowed.Meanwhile, the bottom of air compartment 2 is provided with slag notch, although part coal ash is in tail gas after coal combustion, discharges with tail gas,
But also major part is that Direct precipitation gets off, enters air compartment 2, accumulate in air compartment 2 bottom.Therefore open up in the bottom of air compartment 2
Slag notch, connects, in slag notch, pipeline of slagging tap, cinder is derived, and arranges baffle plate in cinder pipe interlude, and baffle plate is driven by motor
Dynamic.Connect lag cooler in residue outlet afterbody, cinder is transported in lag cooler, is transported to by conveyer belt 342 after being cooled down
Slag storehouse.Slag notch setting is multiple, can carry out alternation.
Wherein, cyclone separator 4 includes extraction opening, air outlet and ash hole 41, and extraction opening is connected with boiler 1, by pot
The tail gas of stove 1 burning is extracted and is separated gas with solid, and gas is gone out from air outlet, enters into exhaust treatment system 5,
Solid is discharged from ash hole 41.Many times, in burning, burning velocity is fast for pure coal, and temperature rises it is desirable that lasting
Heating, therefore, temperature rises and inconspicuous, leads to its thermal efficiency relatively low, therefore, it is in order to control burning in coal combustion
Speed, need to mix some other solid dirt inside coal, and its ability of coal ash is the product that coal combustion stays, its conduct
Mix business and can play the effect recycling, on the one hand coal can be preheated, in addition, also without additionally being increased
Other impurities, more convenient.Therefore in ash hole 41 position of cyclone separator 4, setting melts down pipeline 92 as returning charge structure 9,
Part coal ash is back in boiler 1, and then is mixed with coal, reduce burning of coal speed.
Due to the difference of coal and the ratio of coal ash, the different conditions burning can be caused, therefore, be provided with melting down pipeline 92
Control the control device 010 of coal ash back-flow velocity and flow.The bottom deslagging mouth 41 side setting of cyclone separator 4 is outwardly convex
Part, and form outlet 91 straight up, connect reflux line in the afterbody of outlet 91, so, coal ash melt down when
Wait, will not direct straight entrance pipeline, it can allow most coal ash or edge by exporting 91 one bend of formation, so
Ash hole 41 is discharged, and sub-fraction coal ash enters reflux line in the presence of air-flow.Meanwhile, coal ash there is also bulky grain and little
Granule, bulky grain enters into the area taking in boiler 1 greatly, smaller with the contact area of coal, is not suitable as mixing
Coal ash, and little particle coal ash is more uniform with the mixing ratio of coal, beneficial to burning of coal, therefore, in backflow, in ash hole 41 position
Part bulky grain can be excluded by the outlet 91 that setting step becomes by gravity.
As shown in fig. 7, in order to allow the granule that coal ash enters in boiler 1 be less granule, setting in outlet 91 positions
Put filter screen 96, oarse-grained coal ash is filtered out by filter screen 96.Because filter screen 96 easily blocks, therefore, in the side of filter screen 96,
Usually air is above to flow to from filter screen 96, flows out from behind, in filter screen 96 anti-shake device disposed behind, in cleaning filter screen 96
When filter screen 96 is shaken, and then the dust being stuck on filter screen 96 is shaken off.Anti- shake device is by air gun 95
Filter screen 96 is sprayed, and, air gun 95 is batch (-type) jet, causes the vibrations to filter screen 96, reaches cleaning filter screen 96
Effect.But general operationally air pressure inside is not suitable for carrying out shaking using air gun 95 implementing to clear up, therefore, this equipment
It is usually to use when shutting down.
In order to control the flow entering boiler 1, add the first electromagnetic valve 98 on melting down pipeline 92, by the first electromagnetic valve
98 control flow to enter.Likewise, it can be replaced using shutter 97, dammed by promoting shutter 97, reached control
The purpose of flow processed.Shutter 97 adopts the first Serve Motor Control, and shutter 97 one end is placed in melts down in pipeline 92, the other end
It is placed in and melt down outside pipeline 92, the travelling carriage that setting is slided for shutter 97 on melting down pipeline 92, the first servomotor is fixed on
On travelling carriage, the first servomotor is installed gear, tooth bar is set at shutter 97 edge, rack and pinion engages, and reaches control
The purpose of shutter 97 processed.
Melt down pipeline 92 to be mainly used for conveying coal ash due to it, therefore, it easily plant issue, accordingly, it would be desirable to
Timing is overhauled, but, somewhat incorrect if simply because just whole equipment is shut down if some glitch, producing stopping, meanwhile,
Filter screen 96 is also required to timing and is cleared up, and therefore, typically will melt down pipeline 92 and be arranged in pairs, in outlet 91 position setting one screening
Baffle plate 97, shutter 97 horizontally slips, and shutter 97 is horizontally slipped by the second Serve Motor Control, reaches and controls back
The practicality in boiler tube road 92 and cleaning.
In the interlude of cyclone separator 4, anti-material gas tube 93 is set near ash hole 41, increases the air pressure of ash hole 41,
Equally, the ash discharge speed of ash hole 41 is allowed to increase.In addition, allowing the flow velocity melting down pipeline 92 to increase, anti-gas tube is arranged
Second electromagnetic valve, by the anti-throughput expecting gas tube 93 of the second solenoid valve control, thus control the flow velocity melting down pipeline 92.One
As anti-material gas tube 93 be oppositely arranged respectively with melting down pipeline 92.
As shown in figure 1, the air outlet in cyclone separator 4 connects exhaust treatment system 5, exhaust treatment system 5 includes directly
Connect the heat exchanger tube 51 being connected with air outlet（As shown in Figure 8）, the cleaner unit 52 that is connected with heat exchanger tube 51 is connected with cleaner unit 52
Desulfurizing tower 53 and be connected the smokestack 54 that air is discharged with desulfurizing tower 53.Airduct 8 is wound with heat exchanger tube 51 as thermal cycle
System, airduct 8 is heated by heat exchanger tube 51, and the air in airduct 8 is heated, then the hot-air in airduct 8 is divided
It is not transported in each system and is used, reach the purpose of preheating.Airduct 8 is located on heat exchanger tube 51, and airduct 8 includes air intake
End 81 and outlet air end 83, air intake 81 is provided with aerator.Outlet air end 83 be provided with some be in charge of, be respectively in charge of and be respectively connected to charging system
3 and ignition system, it is in charge of and is equipped with flow measuring meter 84, for measuring the flow of airduct 8, in addition, setting being in charge of on all
There is flow control valve 85（I.e. electromagnetic valve）, control the flow being respectively in charge of.As shown in Fig. 8, Fig. 9, Figure 10 a and Figure 10 b, in airduct 8
Through heat exchanger tube 51 position be airduct 8 heat exchanging part 82, heat exchanging part 82 setting is in some tubules 825, and between each tubule 825
It is provided with some heat exchanger fins.Tubule 825 two ends are equipped with collection syncephalon 821, and collection syncephalon 821 side is provided with some points of holes 826, another
Side is provided with connecting hole 822, and tubule 825 is inserted in point hole 826, is accessed by connecting hole 822 and picks out, and heat exchanging part 82 arranges many
Individual, and finish up connect, air is inputted from air intake 81, flows out from outlet air end 83 after heat exchanging part 82, entrance is in charge of, by point
Pipe sends into each position, such setting, allows point and have been preheated when entering each system, thus when air uses,
Do not need heat, so enter boiler 1 do not need heat absorption, thus allow coal combustion heat without separate again a part carry out pre-
Heat, saves the use of coal, and then allows this boiler 1 in burning, and the consumption of coal is little, and the waste gas of generation is few, subtracts to a certain extent
Lack the impact to environment.
As shown in Fig. 9-10b, collection syncephalon 821 is in that semicircular is arranged, and two collection syncephalon 821 combinations form complete ring, will
Complete ring may be mounted on heat exchanger tube 51, collects on the relative face of syncephalon 821 and collection syncephalon 821 and heat exchanger tube 51 at two
Sealing member 823 is arranged on the face connecting, groove is set in sealing member 823 position, sealing member 823 is arranged to thin film, cover recessed
On groove, setting sealing hole 824 in groove, sealing hole 824 is connected with connecting hole 822, thus in inflation so that two thin film are carried out
Conflict, form sealing.
As shown in Fig. 9 and 10a, the inwall of collection syncephalon 821 is provided with point hole 826, point hole 826 is all with connecting hole 822 even
Logical, setting step in point hole 826, elastic component 828 installed by step, can be placed using rubber elastomeric material, or adopt
Use spring（For the consideration of sealing, proper as elastic component 828 using rubber）.Sleeve piece of conflicting again 827, external member 827
Slide with point hole 826, and external member 827 outer ring is fitted tightly with point hole 826, seal groove 829, tubule 825 are arranged on external member 827
It is plugged in groove, for convenience grafting, outer member's setting guiding structure of seal groove 829, it is more than the cambered surface of well width for opening
Structure.
As shown in Figure 1, Figure 2 with shown in Fig. 5, wherein one is in charge of and is connected with the warm-air pipe 362 of airduct 36 of delivering coal, and airduct 36 of delivering coal is another
Outer side connects cool air hose 361, and cool air hose 361 is connected with warm-air pipe 362, and mixing air is delivered coal in airduct 36.?
The position setting blender 020 that cool air hose 361 is connected with warm-air pipe 362, by the valve element of threeway, is rotated, two is entered
Blocked not of uniform size of the hole entering and reach the purpose adjusting temperature（Similar for hot and cold water tap structure, valve rod is arranged
Gear, is controlled by valve element motor 400）.As shown in fig. 6, arranging temperature sensor 100 delivering coal on airduct 36, temperature is entered
Row detection, is input to comparison circuit 200 and is compared.Comparison circuit 200 includes comparator A1, A2, and the homophase of comparator A1 goes out
Enter end input comparison signal V1, the inverting input of comparator A1 is coupled and and temperature sensing with the in-phase input end of comparator A2
The outfan of device 100 couples, the inverting input input comparison signal V2 of comparator A2, comparator A1, the output of comparator A2
End output judges signal Vs1 by phase inverter 201 is processed first；The output of comparator A2 outfan is processed by phase inverter 201
Second judge signal Vs2.
On-off circuit 300 includes switching tube M1, M2, photo-coupler 301,302, the control end of switching tube M1 and phase inverter
By first, 201 outfan judges that signal Vs1 controls, the other two ends of switching tube M1 respectively with running voltage and be used for controlling electricity
The low voltage control end of the photo-coupler 301 that machine is inverted couples, and the other two ends of photo-coupler 301 switch coupling with motor reversal
Connect；The control end of switching tube M2 is coupled with the outfan of phase inverter 201, judges that signal Vs2 controls by second, switching tube M2's
In addition two ends are coupled with the low voltage control end of running voltage and the photo-coupler 302 rotating forward for controlled motor respectively, optical coupling
The other two ends of device 302 and motor rotate forward switch and couple.
When V0 is more than V1（I.e. observed temperature is more than highest preset temperature）, by switching tube M1, optocoupler is turned on, optocoupler
Clutch 301 is coupled with relay Ks1 switch, thus being closed relay Ks1 by this Continuity signal, so that motor is accessed
Circuit for reversing, now, the opening of cool air hose 361 increases, and temperature reduces.Switching tube M2 is off, and photo-coupler 302 is not
Work, thus relay Ks2 is in off position；When V0 is less than V1（I.e. observed temperature is less than highest preset temperature）, lead to
Cross switching tube M2 to be turned on optocoupler, photo-coupler 302 is coupled with relay Ks2 switch, thus passing through this Continuity signal
Relay Ks2 is closed, makes motor access prograde circuit, now, the opening of warm-air pipe 362 is increased, and temperature raises.Switch
Pipe M1 is off, and photo-coupler 301 does not work, thus relay Ks1 is in off position.V0 is between V1 and V2
When（I.e. temperature is between preset temperature）, photo-coupler 301,302 is in off-state, and now motor does not rotate, and keeps temperature
Degree is constant.
As shown in figure 1, be in charge of also connecting with blast pipe 8, so, the air entering air compartment 2 is hot-air, rather than cold sky
Gas, from preheating to air without extra heating process, thus saved the step preheating, meanwhile, by afterbody temperature
Degree is utilized, thus the temperature of coal combustion obtains utilization as big as possible.Airduct 8 is also connected with the air supply pipe of lighter 6, supplies
, using the air in being in charge of, its temperature is high for the air of trachea, and molecular proportion is more active, is therefore more fully mixed with fuel oil, igniting
When can convenient effectively.By unnecessary be in charge of be directly accessed boiler 1, boiler 1 is heated, the heat of considerable part coal combustion
Amount, thus reduce the usage amount of coal to a certain extent.
As shown in figure 1, tail gas can carry out follow-up work after swapping device heat by heat exchanger tube 51, enter into
Vent gas treatment, now exhaust temperature is relatively low, thus some impurity of in the air are without heat buoyancy, can to sinking, therefore,
Tail gas first carries out dedusting in the first stage.Typically dedusting can be carried out using sack cleaner 52, because tail gas is after heat exchange, temperature
Degree relative reduction, will not cause the deeply worried impact of high temperature, meanwhile, sack cleaner 52 has the air of uniform temperature to cloth bag
Dust removing effects are relatively preferable, are not in the situation of caking, and therefore, this step dedusting can be carried out using sack cleaner 52.
In addition, what sack cleaner 52 went out is part dust, the trickleer dust of in the air still can get out, with sky from cloth bag
Gas enters in the process of rear road together, therefore, it can tail gurgling.During this, it is provided with a tank.Tail gas passes through pipeline
It is passed directly in water, tank outer cup sets a collection conduit, tail gas is emerged from tank after entering water, enters into collection conduit
In, now, water-soluble impurity all filters out.But can there is the gases such as part sulfur dioxide before filtration in the air,
It is soluble in water to make water be in acid, be unable to directly discharge, in order to allow these sour gas carry out desulfurization, can adopt
Use absorbent slurry（Calcium hydroxide）Carry out spray absorber, subsequently form solid, reach the purpose of desulfurization.Again by the gas of desulfurization
Discharged by smokestack 54.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonging 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
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of boiler combustion system, including boiler（1）And it is placed in boiler（1）The air compartment of lower section（2）, it is characterized in that：Described
Boiler（1）Near air compartment（2）Position is connected with charging system（3）, described air compartment（2）Connect lighter（6）, described boiler（1）
Afterbody be connected with cyclone separator（4）, described cyclone separator（4）Including extraction opening, air outlet and ash hole（41）, take out
Take mouth and boiler（1）Afterbody connects, and air outlet is connected with exhaust gas processing device, ash hole（41）Position is provided with returning charge structure（9）,
Described exhaust gas processing device is provided with airduct（8）, described airduct（8）Respectively with charging system（3）, boiler（1）And lighter
（6）Connect.
2. boiler combustion system according to claim 1, is characterized in that：Described charging system（3）Including with boiler（1）Even
The coal chute connecing（35）, for holding the coal bunker of fuel（31）And connect coal bunker respectively（31）With coal chute（35）Quantitation defeated
Send device（34）, described quantitative conveyer（34）One end connects coal bunker（31）, the other end is connected with material blanking tube.
3. boiler combustion system according to claim 2, is characterized in that：Described quantitative conveyer（34）Including shell
（341）And it is arranged on shell（341）Interior conveyer belt（342）, conveyer belt（342）One end connects coal bunker（31）, the other end is even
Connect material blanking tube（32）, described material blanking tube（32）Position is provided with for fuel is poured material blanking tube（32）Jet pipe（37）.
4. boiler combustion system according to claim 3, is characterized in that：Described jet pipe（37）With airduct（8）Connect, described
Material blanking tube（32）With shell（341）The position connecting is provided with coal feeding bucket（31）, described jet pipe（37）Stretch into coal feeding bucket（31）.
5. boiler combustion system according to claim 4, is characterized in that：Described coal bunker（31）It is connected with destructor（33）,
Described destructor（33）Including with coal bunker（31）The mounting cylinder connecting（331）, mounting cylinder（331）Interior rotating shaft（332）And it is convex
Play bar（333）, described raised item（333）It is fixed on rotating shaft in the shape of a spiral（332）On, raised item（333）With mounting cylinder（331）Interior
There is gap in wall（334）.
6. boiler combustion system according to claim 5, is characterized in that：Described coal chute（35）On be connected with airduct of delivering coal
（36）, airduct of delivering coal（36）It is provided with warm-air pipe（362）And cool air hose（361）, described warm-air pipe（362）With airduct（8）Even
Connect, described cool air hose（361）And warm-air pipe（362）Link position is provided with blender.
7. boiler combustion system according to claim 6, is characterized in that：Described exhaust gas processing device includes connection whirlwind and divides
From device（4）Heat exchanger tube（51）, and heat exchanger tube（51）The cleaner unit connecting（52）, and extract cleaner unit（52）Air de-
Sulfur tower（53）With the smokestack discharging air（54）, described airduct（8）It is located in heat exchanger tube（51）On.
8. boiler combustion system according to claim 7, is characterized in that：Described airduct（8）Including air intake（81）, air-out
End（83）And it is arranged on heat exchanger tube（51）On heat exchanging part（82）, heat exchanging part（82）Including collection syncephalon（821）And tubule
（825）, described tubule（825）Two ends are provided with described collection syncephalon（821）, collect syncephalon（821）It is provided with connecting hole（822）And
Divide hole（826）, described tubule（825）It is plugged on a point hole（826）Interior, described connecting hole（822）Respectively with air intake（81）Or
Outlet air end（83）Connect.
9. boiler combustion system according to claim 8, is characterized in that：Described outlet air end（83）Be provided with some be in charge of, and
It is in charge of and be equipped with flow measuring meter（84）And flow control valve（85）.
10. boiler combustion system according to claim 9, is characterized in that：Described cyclone separator（4）It is provided with and melt down pipe
Road（92）, described melt down pipeline（92）Two ends respectively with boiler（1）And cyclone separator（4）Connection, described cyclone separator
（4）It is provided with anti-material gas tube（93）, described anti-material gas tube（93）With melt down pipeline（92）It is oppositely arranged.
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| CN201610970457.4A CN106402845B (en) | 2016-10-28 | 2016-10-28 | Boiler combustion system |
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|---|---|---|---|
| CN201610970457.4A CN106402845B (en) | 2016-10-28 | 2016-10-28 | Boiler combustion system |
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| CN108534165A (en) * | 2018-03-27 | 2018-09-14 | 上海金联热电有限公司 | A kind of feeding device and the boiler combustion system with the device |
| CN108758595A (en) * | 2018-03-27 | 2018-11-06 | 上海金联热电有限公司 | A kind of boiler combustion system |
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| Publication number | Publication date |
|---|---|
| CN106402845B (en) | 2018-12-21 |
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