CN108758651A - A kind of circulating fluidized bed boiler suitable for waste incineration - Google Patents
A kind of circulating fluidized bed boiler suitable for waste incineration Download PDFInfo
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- CN108758651A CN108758651A CN201810754335.0A CN201810754335A CN108758651A CN 108758651 A CN108758651 A CN 108758651A CN 201810754335 A CN201810754335 A CN 201810754335A CN 108758651 A CN108758651 A CN 108758651A
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- Prior art keywords
- flue gas
- gas recycled
- adiabatic furnace
- air
- heat
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Classifications
-
- 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
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside 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
- F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
Abstract
The invention discloses a kind of circulating fluidized bed boiler suitable for waste incineration, including, burner hearth, air-distribution device, separator, material returning valve, external bed heat, back-end ductwork, water cooling tube bank, steam-generating bank, low temperature superheater, economizer, flue gas recycled heat exchanger, air preheater etc.；Water-cooling wall in stove is all poured with refractory material and is covered by the present invention, ensures the higher ignition temperature of circulating fluid bed garbage furnace.Flue gas recycled is heated using back-end ductwork heat smoke simultaneously, stove heat is added to, further increases the combustion stability of circulating fluid bed garbage.Flue gas recycled by heating is mixed with First air, Secondary Air, while improving wind-warm syndrome, reduces the primary air flow for fluidisation, further achievees the effect that strengthen fractional combustion, is reduced NOx and is originally generated.Arrange that high temperature superheater solves the problems, such as that adiabatic furnace internal heating surface is insufficient in external bed；Fume high-temperature corrosion and the coking problem in biomass and Refuse Incineration Process are well solved simultaneously.
Description
Technical field
The present invention relates to waste incinerations and Sector of Cfb Boilers, more particularly to a kind of to be suitable for waste incineration
Circulating fluidized bed boiler.
Background technology
Domestic waste is the solid waste generated in people's life.With the development of economy, domestic waste
Yield in increasing year by year.A large amount of rubbish has become a long-standing pollution sources in city.It is how economical, effectively into
Row garbage disposal, a urgent problem to be solved for making us face.Efficient incineration technology is conducive to alleviate by municipal refuse
Caused by environmental pollution.Compared with filling with composting technology, incineration technology treating capacity is big, it is possible to reduce amount of landfill, solidification are harmful
Ingredient, and can realize the abundant recycling of thermal energy, it is current most promising technology of garbage disposal.
Consideration of MSW Incineration Technology mainly has mechanical grate furnace, Rotation error and circulating fluidized bed boiler at present.Stove
Grate furnace combustion technology is ripe, stable, reliable, and most solid refuses, which do not need any pretreatment, directly to be fired into stove
It burns.It is applied especially to large scale rubbish centralized processing, waste incineration and generating electricity (or heat supply) can be made.But the extra high dirt of moisture content
Mud, big part house refuse are not suitable for directly using fire grate type incinerator.And desulfuration in furnace is can not achieve, furnace high-temperature burning, production
Raw a large amount of NOx, pollute the environment, the thermal efficiency is relatively low.Although Rotation error fuel tolerance is high, fuel tolerance and
Drying property is good, and in being applicable to or the waste incineration project of large capacity, but it is connected that transmission device is complicated, fire proofed wood in stove
Expect that fragile and reaction rate is low etc., there is its limitation applied.In contrast, circulating fluid bed garbage furnace, rubbish
Type is adaptable, and emulsion zone possesses a large amount of high-temperature material, and the thermal capacity of bed is big, therefore can provide drying garbage, pyrolysis
With start the required amount of heat that burns, keep flameholding；Firing efficiency is high, and heat and mass transfer process is stronger in bed so that rubbish
Rubbish comes into full contact with bed material, improves the pyrolysis rate of rubbish；Flue gas emission performance is good, and desulfuration in furnace greatly reduces SO2's
Discharge, recirculating fluidized bed limit the formation of heating power type and fuel NO, in recycle stream using low temperature, fractional combustion
Change in bed and adsorbent appropriate is added, heavy metal, bioxin and the discharge of HCl can be substantially reduced.From technology trends
It sees, recycle fluidized-bed combustion boiler has preferable application characteristic, for handling the processing of house refuse stabilization, recovery waste heat money
Source realizes the discharge of ultra-low contamination object, has preferably economical and environmentally friendly benefit.
Conventional recycle fluidized bed refuse incinerator be directed to rubbish form it is unstable, corrosion and coking constituent content compared with
The features such as high, each ingredient physico-chemical property difference is apparent carries out corresponding improvement and design, and there are the following problems：
(1) refuse thermal value is low, composition differ greatly and be fed it is unstable etc. due to, cause fluidized bed incinerator to burn
Temperature is low, combustion instability, and CO content in smoke is higher.
(2) alkali and alkaline earth metal ions content is higher in garbage raw material, and it is total that there are lower melting-point low temperature in fly ash granule
Melt and compound be easy to cause air-distribution device and block and high temperature heat-transfer surface coking.
(3) garbage fuel contains more Cl elements, and the HCl formed in flue gas be easy to cause the corrosion of high temperature heat-transfer surface.
The patent document of Publication No. CN204829935U discloses a kind of different fluidized bed garbage combustion boiler that recirculates,
It is characterized in that, water spray is respectively equipped between high temperature superheater and medium temperature overheater and between medium temperature overheater and low temperature superheater
Attemperator adjusts the temperature of superheater outlet using direct-contact desuperheater, protects superheater.However, spray water in high temperature heat-transfer surface, meeting
It aggravates sour gas to react with what metal avoided, aggravation corrosion.
The patent document of Publication No. CN205606581U discloses a kind of circulating fluid bed garbage of fluidised form reconstruct
Boiler.Fire box temperature can be efficiently controlled in optimum response section using curtain wall so that desulfuration in furnace efficiency and
SNCR denitration efficiency reaches best.Tail portion is complete using the full overhung construction of air cooling packet wall or tail portion brick wall according to the actual conditions of fuel
Overhung construction has advanced optimized the reasonable Arrangement of back-end surfaces, it is ensured that flue gas flow rate is in zone of reasonableness.But the system
By optimized integral structure, improve garbage fuel combustion efficiency, it is relatively low to combustion process controllability.
Invention content
In order to overcome the defect of the above-mentioned prior art, the purpose of the present invention is to provide a kind of following suitable for waste incineration
Circulation fluidized bed boiler burns Circulating fluidized bed boiler design and transformation for conventional garbage.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of circulating fluidized bed boiler suitable for waste incineration, including adiabatic furnace 1,1 bottom of adiabatic furnace arrangement are inclined
Oblique air distribution plate 4,1 horizontal flue bottom of adiabatic furnace are connected to efficient cyclone separator 2, and the setting of 2 bottom of efficient cyclone separator is outer
A heat exchanger 3 is set, high temperature superheater, the outlet of external bed heat 3 and 1 returning charge of adiabatic furnace are disposed in external bed heat 3
Mouth connection；Tail flue gas processing system is arranged in 1 back-end ductwork of adiabatic furnace, tail flue gas processing system is by being sequentially arranged in absolutely
Steam-generating bank 5, water cooling tube bank 6, low temperature superheater 7, economizer 8 and air preheater 10 in 1 back-end ductwork of hot stove thorax form, evaporation
Tube bank 5 is connect with water-cooling system；Further include flue gas recycled system, flue gas recycled system includes being successively set on recycling cigarette
Valve 15, flue gas recycled booster fan 13 in feed channel 14 and flue gas recycled heat exchanger 9, wherein flue gas recycled exchange heat
Device 9 simultaneously be arranged in back-end ductwork and positioned at economizer 8 and air preheater 10 between, flue gas recycled pipeline 14 import and respectively with
The a wind pipe 11 and secondary air duct 12 that 1 bottom of adiabatic furnace is connected to middle part；Rubbish is fluidized in adiabatic furnace 1
Burning forms dust-laden high-temperature flue gas, and high-temperature flue gas carries uncompleted burned carbon particle and recycle stock is further on 1 top of adiabatic furnace
After combustion heat release, the separation for carrying out flue gas and material, cigarette are entered in efficient cyclone separator 2 by 1 horizontal flue of adiabatic furnace
Material in gas is detached from 2 inner eddy flow of efficient cyclone separator, and external bed heat exchange is discharged into from 2 bottom of efficient cyclone separator
Device 3, material return again to adiabatic furnace 1 after carrying out heat exchange with the high temperature superheater arranged in external bed heat 3, and the process is real
While having showed cycle and the heat exchange of material, high temperature steam pipeline and perishable in flue gas, easy coking gaseous state or small are avoided
The contact of particle solves high temperature steam pipeline coking and etching problem；Contain from what the central tube of efficient cyclone separator 2 was discharged
The few flue gas of dirt is successively by being arranged in the steam-generating bank 5 of 1 back-end ductwork of adiabatic furnace, water cooling tube bank 6, low temperature superheater 7, saving
Coal device 8, flue gas recycled heat exchanger 9 and air preheater 10, and be sequentially completed in flue gas and steam-generating bank 5 and low temperature superheater 7 and steam
Water supply in vapour, water cooling tube bank 6 and economizer 8, in flue gas recycled heat exchanger 9 one or two times in flue gas recycled and air preheater 10
The heat exchange of wind；Flue gas recycled is drawn after being handled by tail flue gas processing system enters flue gas recycled pipeline 14, by following again
13 pressure-increasing unit of ring flue gas booster fan, flue gas recycled import 11 He of a wind pipe after flue gas recycled heat exchanger 9
Secondary air duct 12.
It is all poured by castable in the adiabatic furnace 1, ensures that recirculating fluidized bed garbage fired boiler waste incineration is higher
Ignition temperature.
100 DEG C~110 DEG C of low-temperature flue gas is drawn after being handled by tail flue gas processing system enters flue gas recycled pipeline
14, flue gas recycled booster fan 13 carries out pressure-increasing unit to low-temperature flue gas.Flue gas recycled by heating and First air and
Secondary Air mixes, and while improving wind-warm syndrome, reduce a Secondary Air oxygen amount, reduces the primary air flow for fluidisation, further reaches
Stablize burning and strengthens the effect of classification.
The inclined distributor 4 and the angle of horizontal direction are 10 °~25 °, and several orientation outlet air are set on inclined distributor 4
Blast cap, the edge of inclined distributor 4 is fixed on 1 inner ring of adiabatic furnace, and slag dropping tube cloth, can in 4 lowest point of inclined distributor
Ensure that molten ash and bulky grain are smoothly discharged, and then ensures the lasting fluidized state of material in stove.
Compared to the prior art compared with the present invention has following advantage：
1) when adiabatic furnace can overcome refuse thermal value relatively low, the problem of ignition temperature deficiency, stove internal heating surface utilizes resistance to
Fiery material covers, and reduces caloric receptivity in stove, ensures the ignition temperature of 850 DEG C of incinerator burner hearth or more.
2) flue gas recycled for passing through back-end ductwork heat exchanger, on the one hand can lower the oxygen concentration of primary and secondary air, drop
Low NOx is generated, while can change the heat of recycling gas, by adjusting exhaust gas volumn to maintain fluidized bed refuse incinerator to exist
In-furnace temperature when different calorific value rubbish is handled, efficiency of combustion and stability are improved.
3) arrange that high temperature superheater can solve the problems, such as that adiabatic furnace internal heating surface is insufficient in external bed.Meanwhile because
For aggressive atmosphere and the easy coking element overwhelming majority existed in the form of gas phase and submicron particles, without by separator
It traps and then enters external bed.Therefore, using in external bed arrange high-temperature surface can well solve biomass and
Fume high-temperature corrosion in Refuse Incineration Process and coking problem.
4) tilting air-distribution device then can preferably help deslagging in stove.
Garbage fuel calorific value is generally relatively low, and most of fluidized bed refuse incinerator fire box temperatures of present are unable to reach
850℃.Traditional burner hearth generally uses film water cold wall structure, the present invention to consider the lower calorific value of rubbish and larger feed wave
It is dynamic, water-cooling wall in stove is all poured with refractory material and is covered, furnace wall cooling caloric receptivity is reduced, to ensure recirculating fluidized bed rubbish
The higher ignition temperature of rubbish incinerator.Since stove internal heating surface is insufficient, arranged in external bed high temperature superheater can solution break off relations
The problem of hot stove thorax internal heating surface deficiency.
Flue gas recirculation is circulating fluidized bed boiler commonly low nitrogen fractional combustion control technology, and the present invention utilizes flue gas again
While loop control NOx is originally generated, flue gas recycled is heated using back-end ductwork heat smoke, stove heat is added to, into one
Step improves the combustion stability of circulating fluid bed garbage.100 DEG C~110 DEG C of low-temperature flue gas is by tail flue gas processing system
It is drawn after processing and enters flue gas recycled pipeline, recirculation blower is set on flue gas recycled pipeline, is carried out to low-temperature flue gas
Pressure-increasing unit.Valve is similarly provided on flue gas recycled pipeline, controls the flue gas recycled flow.Recycle low-temperature flue gas
Can be heated to by first passing around the flue gas recycled heat exchanger on air preheater top by 200~250 DEG C, 300 DEG C of flue-gas temperature at heat exchanger
Left and right.Flue gas pressures and temperature-measuring element are set on the recirculation conduit, measure corresponding flue-gas temperature and pressure.By
The flue gas recycled of heating is mixed with First air, Secondary Air, while improving wind-warm syndrome, reduces the primary air flow for fluidisation, into
One step achievees the effect that stablize burning and strengthens classification.
Rubbish generates a large amount of flue gases and flying dust in stove chamber inner combustion, and flue gas carries uncompleted burned carbon particle and recycle stock in stove
After the further combustion heat release in thorax top, into the separation for carrying out flue gas and material in separator.The material being separated is through material
Bucket, dipleg enter material returning device, and material returns again to burner hearth after carrying out heat exchange with high temperature superheater, which realizes following for material
Ring.Meanwhile because aggressive atmosphere and the easy coking element overwhelming majority are existed in the form of gas phase and submicron particles, without
It can be trapped by separator and then enter external bed.Therefore, using in external bed arrange high-temperature surface can solve well
Certainly biomass and the fume high-temperature corrosion in Refuse Incineration Process and coking problem.
Since garbage fuel is very uneven, it is frequently present of big material and lower melting-point lime-ash, in order to improve the row of boiler
Slag characteristic, the present invention use inclined air distribution plate, and the blast cap of several orientation outlet air, the side of inclined distributor are set on inclined distributor
Edge is fixed on burner hearth inner ring.For slag dropping tube cloth in inclined distributor lowest point, the program can ensure that molten ash and bulky grain are suitable
Profit discharge, and then ensure the lasting fluidized state of material in stove.
Description of the drawings
Fig. 1 is circulating fluidized bed boiler composition of the present invention and present invention process flow diagram.
Wherein：1- adiabatic furnaces, 2- efficient cyclone separators, 3- external bed heats, 4- inclined distributors, 5- evaporation tubes
Beam, the tube bank of 6- water coolings, 7- low temperature superheaters, 8- economizers, 9- flue gas recycled heat exchangers, 10- air preheaters, 11- primary air pipings
Road, 12- secondary air ducts, 13- flue gas recycled booster fans, 14- flue gas recycled pipelines, 15- valves.
Specific implementation mode
The invention will now be described in detail with reference to the accompanying drawings：
Example 1 is as shown in Figure 1, a kind of circulating fluidized bed boiler suitable for waste incineration, including 1. adiabatic furnaces, and 2. is high
Imitate cyclone separator, 3- external bed heats (high temperature superheater), 4- inclined distributors, 5- steam-generating banks, the tube bank of 6- water coolings, 7-
Low temperature superheater, 8- economizers, 9- flue gas recycled heat exchangers, 10- air preheaters, 11- a wind pipes, 12- secondary air ducts.
13- flue gas recycled booster fans, 14- flue gas recycled pipelines, 15- valves.Garbage fuel burns in stove, due to burner hearth by
Hot face is cast material covering and forms adiabatic furnace 1, and 850 DEG C or more of ignition temperature can be stably reached in stove.Rubbish is in thermal insulation
Burning generates a large amount of high-temperature flue gas and flying dust in burner hearth 1, and high-temperature flue gas carries uncompleted burned carbon particle and recycle stock in heat insulation furnace
After the further combustion heat release in 1 top of thorax, into the separation for carrying out flue gas and material in efficient cyclone separator 2.It is separated
Material enter material returning device through hopper, dipleg, material returns again to adiabatic furnace 1 after carrying out heat exchange with external bed heat 3, should
Process realizes the cycle of material.From efficient cyclone separator 3 be discharged flue gas pass sequentially through steam-generating bank 5, water cooling tube bank 6,
Low temperature superheater 7 and economizer 8, flue-gas temperature are reduced to 300 DEG C or so.Different from other smoke processing systems, flue gas is immediately
Drawn after the low-temperature flue gas into 9,100 DEG C~110 DEG C of flue gas recycled heat exchanger is handled by tail flue gas processing system into
Enter flue gas recycled pipeline 14, recirculation blower 13 is set on flue gas recycled pipeline, and pressure-increasing unit is carried out to low-temperature flue gas.
Valve 15 is similarly provided on flue gas recycled pipeline, controls the flue gas recycled flow.By the flue gas recycled of heating
With in a wind pipe 11 and secondary air duct 12 First air and Secondary Air mix, improve wind-warm syndrome while, reduce for flowing
The primary air flow of change further achievees the effect that stablize burning and strengthens classification.Under conventional operating mode, flue gas recycled amount is controllable
10% or so of total exhaust gas volumn, if combustion instability in stove, can further improve flue gas recycled amount, further increase into
Stove heat helps to stablize burning.Inclined distributor 4 is used in adiabatic furnace 1, the angle for tilting cloth air distribution plate and horizontal direction is
10 °~25 °.The blast cap of several orientation outlet air is set on inclined distributor, the edge of inclined distributor is fixed in adiabatic furnace 1
Circle.Slag dropping tube cloth is in 4 lowest point of inclined distributor, and the program can ensure that molten ash and bulky grain are smoothly discharged, Jin Erbao
Demonstrate,prove the lasting fluidized state of material in stove.
Furthermore, it is necessary to which explanation, the equivalence changes that system described in the present invention is done, are included in the present invention's
In protection domain.Those skilled in the art of the present invention can do similar mode to described specific example and replace
In generation, belongs to the protection of the present invention without departing from structure of the invention or beyond the scope defined by this claim
Range.
Claims (4)
1. a kind of circulating fluidized bed boiler suitable for waste incineration, it is characterised in that：Including adiabatic furnace (1), adiabatic furnace
(1) bottom arrangement inclined distributor (4), adiabatic furnace (1) horizontal flue bottom are connected to efficient cyclone separator (2), efficient rotary
External bed heat (3) is arranged in wind separator (2) bottom, is disposed with high temperature superheater in external bed heat (3), external bed is changed
Hot device (3) outlet is connected to adiabatic furnace (1) returning charge mouth；Tail flue gas processing system is arranged in adiabatic furnace (1) back-end ductwork,
Tail flue gas processing system is by the steam-generating bank (5), the water cooling tube bank (6), low that are sequentially arranged in adiabatic furnace (1) back-end ductwork
Warm superheater (7), economizer (8) and air preheater (10) composition, steam-generating bank (5) are connect with water-cooling system；Further include recycling
Flue gas system, flue gas recycled system include the valve (15) being successively set in flue gas recycled pipeline (14), recycling cigarette
Gas booster fan (13) and flue gas recycled heat exchanger (9), wherein flue gas recycled heat exchanger (9) at the same be arranged in back-end ductwork
It is interior and between economizer (8) and air preheater (10), flue gas recycled pipeline (14) import with respectively with adiabatic furnace (1) bottom
The a wind pipe (11) and secondary air duct (12) being connected to middle part；Rubbish carries out fluidized bed combustion shape in adiabatic furnace (1)
At dust-laden high-temperature flue gas, high-temperature flue gas carries uncompleted burned carbon particle and recycle stock further burns on adiabatic furnace (1) top
After heat release, the separation for carrying out flue gas and material, cigarette are entered in efficient cyclone separator (2) by adiabatic furnace (1) horizontal flue
Material in gas is detached from efficient cyclone separator (2) inner eddy flow, and external bed is discharged into from efficient cyclone separator (2) bottom
Heat exchanger (3), material return again to adiabatic furnace after carrying out heat exchange with the high temperature superheater arranged in external bed heat (3)
(1)；The flue gas few from the dust-laden of the central tube of efficient cyclone separator (2) discharge is successively by being arranged in adiabatic furnace (1) tail
The steam-generating bank (5) of portion's flue, water cooling tube bank (6), low temperature superheater (7), economizer (8), flue gas recycled heat exchanger (9) and
Air preheater (10), and it is sequentially completed flue gas and steam-generating bank (5) and the interior steam of low temperature superheater (7), water cooling tube bank (6) and province's coal
The heat exchange of a Secondary Air in the interior water supply of device (8), the interior flue gas recycled of flue gas recycled heat exchanger (9) and air preheater (10)；Again
Circulating flue gas is drawn after being handled by tail flue gas processing system enters flue gas recycled pipeline (14), is pressurized by flue gas recycled
Wind turbine (13) pressure-increasing unit, flue gas recycled import a wind pipe (11) and secondary after flue gas recycled heat exchanger (9)
Wind pipeline (12).
2. a kind of circulating fluid bed boiler suitable for waste incineration according to claim 1, it is characterised in that：Institute
It states and is all poured by castable in adiabatic furnace (1), ensure the higher ignition temperature of recirculating fluidized bed garbage fired boiler waste incineration.
3. a kind of circulating fluidized bed boiler suitable for waste incineration according to claim 1, it is characterised in that：100℃
~110 DEG C of low-temperature flue gas is drawn after being handled by tail flue gas processing system enters flue gas recycled pipeline (14), recycles cigarette
Gas booster fan (13) carries out pressure-increasing unit to low-temperature flue gas.Flue gas recycled and First air and Secondary Air by heating is mixed
It closes, while improving wind-warm syndrome, reduce a Secondary Air oxygen amount, reduces the primary air flow for fluidisation, further reach stable burning
With the effect for strengthening classification.
4. a kind of circulating fluid bed boiler suitable for waste incineration according to claim 1, it is characterised in that：Institute
It is 10 °~25 ° to state inclined distributor (4) and the angle of horizontal direction, and the wind of several orientation outlet air is set on inclined distributor (4)
The edge of cap, inclined distributor (4) is fixed on adiabatic furnace (1) inner ring, and slag dropping tube cloth is in inclined distributor (4) lowest point, energy
Enough ensure that molten ash and bulky grain are smoothly discharged, and then ensures the lasting fluidized state of material in stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810754335.0A CN108758651A (en) | 2018-07-11 | 2018-07-11 | A kind of circulating fluidized bed boiler suitable for waste incineration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810754335.0A CN108758651A (en) | 2018-07-11 | 2018-07-11 | A kind of circulating fluidized bed boiler suitable for waste incineration |
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| Publication Number | Publication Date |
|---|---|
| CN108758651A true CN108758651A (en) | 2018-11-06 |
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| CN201810754335.0A Withdrawn CN108758651A (en) | 2018-07-11 | 2018-07-11 | A kind of circulating fluidized bed boiler suitable for waste incineration |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737413A (en) * | 2019-01-09 | 2019-05-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-efficiency low-pollution fire grate garbage boiler and flue gas purification system |
| CN109806734A (en) * | 2019-01-28 | 2019-05-28 | 西安理工大学 | The dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated |
| CN110160054A (en) * | 2019-03-15 | 2019-08-23 | 浙江三联环保科技股份有限公司 | A kind of sludge cleaning burning heat-exchange method |
| CN110500577A (en) * | 2019-08-05 | 2019-11-26 | 陈其钻 | Low nitrogen burning circulating fluidized bed boiler and application method |
| CN111023106A (en) * | 2019-11-29 | 2020-04-17 | 南京理工大学 | Coal-fired coupling waste incineration system |
| CN111637465A (en) * | 2020-05-29 | 2020-09-08 | 东华工程科技股份有限公司 | Treatment system and method for combustible industrial solid waste |
| CN113175665A (en) * | 2021-04-20 | 2021-07-27 | 西安交通大学 | Semi-coke low-NOx anti-slagging mixed combustion system and method |
| CN114705056A (en) * | 2022-04-11 | 2022-07-05 | 泰山石膏有限公司 | Gypsum board production line heating system |
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2018
- 2018-07-11 CN CN201810754335.0A patent/CN108758651A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737413A (en) * | 2019-01-09 | 2019-05-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-efficiency low-pollution fire grate garbage boiler and flue gas purification system |
| CN109806734A (en) * | 2019-01-28 | 2019-05-28 | 西安理工大学 | The dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated |
| CN109806734B (en) * | 2019-01-28 | 2021-09-10 | 西安理工大学 | Dynamic regulation and control method for distribution uniformity of desulfurizer in fluidized bed under ocean working condition |
| CN110160054A (en) * | 2019-03-15 | 2019-08-23 | 浙江三联环保科技股份有限公司 | A kind of sludge cleaning burning heat-exchange method |
| CN110160054B (en) * | 2019-03-15 | 2020-06-16 | 浙江三联环保科技股份有限公司 | Heat exchange method for clean incineration of sludge |
| CN110500577A (en) * | 2019-08-05 | 2019-11-26 | 陈其钻 | Low nitrogen burning circulating fluidized bed boiler and application method |
| CN111023106A (en) * | 2019-11-29 | 2020-04-17 | 南京理工大学 | Coal-fired coupling waste incineration system |
| CN111637465A (en) * | 2020-05-29 | 2020-09-08 | 东华工程科技股份有限公司 | Treatment system and method for combustible industrial solid waste |
| CN111637465B (en) * | 2020-05-29 | 2022-01-11 | 东华工程科技股份有限公司 | Treatment system and method for combustible industrial solid waste |
| CN113175665A (en) * | 2021-04-20 | 2021-07-27 | 西安交通大学 | Semi-coke low-NOx anti-slagging mixed combustion system and method |
| CN114705056A (en) * | 2022-04-11 | 2022-07-05 | 泰山石膏有限公司 | Gypsum board production line heating system |
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