CN108506938B - A kind of coal-fired boiler classified method and system for burning the waste containing biomass - Google Patents
A kind of coal-fired boiler classified method and system for burning the waste containing biomass Download PDFInfo
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- CN108506938B CN108506938B CN201711388144.9A CN201711388144A CN108506938B CN 108506938 B CN108506938 B CN 108506938B CN 201711388144 A CN201711388144 A CN 201711388144A CN 108506938 B CN108506938 B CN 108506938B
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- containing biomass
- burning
- coal
- waste containing
- waste
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Classifications
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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
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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
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/105—Combustion in two or more stages with waste supply in stages
Abstract
The present invention provides a kind of coal-fired boiler classified method and systems for burning the waste containing biomass, on the one hand, multiple hollow pipes parallel arrangements are set as by the way that burning platform will be decomposed, there are certain gaps between the hollow pipe, retention (stop) space of the waste containing biomass is played using the pipeline support, utilize the advantage of coal-burning boiler high temperature incineration, enable from first charging aperture be sent into the waste rubbish full combustion containing biomass, on the other hand, by by one rotatably the furnace bottom that forms of rolling band with band-like face burn fire grate and combine with thermal power plant's pulverized-coal fired boiler is ingenious, the high-temperature residual heat in the dry bottom hopper region below the burner hearth of thermal power plant's pulverized-coal fired boiler is utilized, the waste containing biomass being sent into from second charging aperture is carried out to burn removal noxious pollutant, so that entire waste treatment effeciency is high, effect Fruit is good, reduces the investment of special construction waste incinerator, and operating cost substantially reduces.The present invention can dissolve the waste containing biomass according to using coal-burning boiler, not only realize the recycling of rubbish, while also sufficiently decomposing dioxin using coal-burning boiler high temperature gas flow, realize that waste is innoxious.
Description
Technical field
The present invention relates to the method and systems that a kind of coal-burning boiler burns biomass, more particularly, to discarded containing biomass
Object is directly entered the method and system of pulverized-coal fired boiler fractional combustion decomposition.
Background technique
The municipal refuse (waste) in China includes the combustible waste material containing biomass, wherein the money of biomass
Source mainly includes farm-forestry crop waste, hydrobiontic alga, organic waste (garbage), animal wastes etc..Due to population crowd
It is more, so resource reserve very abundant.And current urban waste generally comprises (1) using technology and formation solid fuel use is made
Alcohol fuel is made in power generation, (2), (3) are gasificated into fuel gas generation, (4) cracking liquefaction etc..
Wherein, above-mentioned technology (1) is higher to the quality requirements of the waste containing biomass, generally requires homogeneous, water
It is point less, calorific value is higher, molding fuel convenient transportation and recycling, but higher cost and turning sludge into fuel ratio it is lower, engineering
Change very poor using economy；Technology (2) applies in general to farm-forestry crop, and ingredient requirement is stringent, and key technology difficulty is broken through, Cheng Chancheng
This is high；Technology (3) technology relative maturity, but it is small, and stable operation, tar are removed and the technologies such as gas purification need
It improves；Technology (4) requires the moisture of the waste containing biomass few, and ingredient requirement is stringent, and technology is in the starting stage.
Although above-mentioned technology has carried out extensive work in development test, be limited by ingredient requirement harshness, small scale, at
The factors such as this height, low efficiency, technology be immature, the industrialization facility for capableing of extensive stable operation are few, it is difficult to fully achieve
The recycling of waste containing biomass, minimizing and innoxious, cause the waste containing biomass that can develop and utilize progress
Slowly.
Currently, a kind of common method is to handle above-mentioned municipal refuse using burning, this just needs special incinerator,
And in order to remove the pernicious gases such as noxious material, such as dioxin, the temperature of burning needs higher.But this will specially build
Special incinerator (Burning Room) is found, cost of investment is higher.The existing special construction waste incinerator of waste incineration room needs, one
As burned using low temperature, such as the Chinese patent application of Publication No. CN106969363A discloses a kind of incinerator, it is in furnace
The first fire grate and the second fire grate are set gradually in vivo, and driver connects the first fire grate and the second fire grate, in the first fire grate and second
Fire grate lower end is respectively provided with draft chamber, and ventilator is arranged in draft chamber；In the furnace body other side, pipeline of slagging tap, pipeline one of slagging tap are set
Side connects the second fire grate, in pipeline other side lower end setting collecting box of slagging tap；Exhaust outlet is set in furnace body upper end, in exhaust outlet
Level-one refrigerator is set；In exhaust outlet and furnace body junction, nano adsorption layer is set.Rubbish is stirred powder in feeding warehouse
Broken, drying, improves combustion efficiency, can guarantee that smashed incineration firing is abundant by the first fire grate and the second fire grate, and lead to
It crosses collecting box to be collected material residue, protects environment.It is adsorbed by hot gas of the nano adsorption layer to generation, and passes through level-one
Refrigerator freezes, and is discharged by exhaust outlet, protects environment.This incinerator can generate many pernicious gases, exclude,
It needs to use in the special device of flue setting and either physically or chemically removes removing and harmful gas.If high-temp combustion, it is also desirable to auxiliary
Help fueling.
In addition, also having a kind of burning boiler to generate electricity using incineration firing, currently, utilizing rubbish in order to sufficiently energy saving
Rubbish power generation is very universal, still, due to lacking high-temp combustion, the pernicious gases such as removal noxious material, such as dioxin, effect
It is very poor, and need other combustion adjuvant to provide device when combustion refuse and combustion adjuvant is provided.
Such as the Chinese invention patent that notification number is CN206037058U discloses a kind of disposed waste generating energy boiler,
Including steam generator, combustion furnace, which is characterized in that the steam generator is located at combustion furnace top position, the steaming
Vapour generator and combustion furnace circumferential periphery are equipped with heating water layer；Exhaust tube, the exhaust tube are equipped with above the combustion furnace
Small generators are equipped with, filter is equipped with below the combustion furnace, are that combustion ash exports below the filter, the burning
Furnace lower end is equipped with air intake vent, and the air intake vent is equipped with air blower, is equipped with inclined plate in the combustion furnace, on the inclined plate
Equipped with combustion-supporting, carrier chain is equipped with above the inclined plate, the carrier chain is equipped with motor driven, the carrier chain top
Equipped with combustion refuse slot, the combustion refuse slot is equipped with blender.The garbage power power economized boiler has energy-saving and emission-reduction
Effect.However, this garbage power needs to build special burning boiler, and it is at high cost, moreover, the burning that reach a high temperature, needs
It is also higher to the leading portion processing requirement of rubbish using combustion adjuvant.
Therefore, people always search for the waste that can facilitate Ran Shao containing biomass but also effectively remove noxious material,
Reduce investment, it is desirable to can burn away the refuse under the high temperature conditions, effectively remove the pernicious gases such as dioxin, and can utilize existing
Energy effective utilization containing the waste material of biomass or the burning of other waste materials is reduced cost, reduces and throw by equipment
Money, but the technical problem is not all solved very well to current.
Summary of the invention
The object of the invention is in order to overcome the shortcomings of the prior art described above, and provide a kind of based on coal-burning boiler
The system for burning the waste containing biomass is realized discarded containing biomass to greatest extent using the advantage of existing coal-burning boiler
Object decomposition combustion provides new approach for the consumption of the waste containing biomass, while providing the new supplement energy.
In order to achieve the above-mentioned object of the invention, it is provided by the invention it is a kind of utilize coal-burning boiler burn the waste containing biomass
Method, it includes:
First charging aperture is equipped in the furnace wall at the burner hearth position of coal-burning boiler；
It is equipped in the lower section of the first charging aperture, the inner wall of burner hearth for carrying and burning the waste containing biomass
Burn platform；
Carrying out cooling to the burning platform prevents burning platform impaired；
The waste transport containing biomass that will be burned is collected near the first charging aperture；
The waste containing biomass being collected into is fed in the burning platform so as to from described discarded containing biomass
Object is decomposed using hyperthermia radiation in the burner hearth on the burning platform, is burnt；
Second charging aperture is equipped in the furnace wall of the lower section of the dry bottom hopper of the burner hearth；
The waste containing biomass is brought into from the second charging aperture in the outside of the second charging aperture, and described
The lower section of dry bottom hopper is constantly pushed to the slag notch, and the waste containing biomass is during being pushed by furnace
Coal dust suspension combustion bring radiations heat energy in thorax and heat burning；And
Product through the waste containing biomass described in burning is discharged from the slag notch.
Further, the burning platform is made by several pipelines being arranged side by side.
Further, the burning platform dips down certain angle in the horizontal direction.
Further, the certain angle is 5-30 °, and one side can allow into burner hearth 101 containing biomass in this way
Waste, which can rest on, burns certain time on platform 101, so as to full combustion, meanwhile, the lime-ash after burning is again flat from burning
It is slided on platform 6, falls into cold gray area.
Further, the space of waste of the outside storage containing biomass of the feed inlet by the second charging aperture and
A closed space is constituted inside the burner hearth of negative pressure itself together.
Further, during the lower section of the dry bottom hopper is constantly pushed to the slag notch, boiler, which is blown, is
Wherein a branch is introduced into the lower section of dry bottom hopper and the waste containing biomass being pushed into is promoted further to burn system.
Further, the furnace bottom burning fire grate that the waste containing biomass is moved in the lower section of the dry bottom hopper is continuous
It is pushed to the slag notch, and it is horizontal by having the fire grate segment of ventilation gap to constitute between each other that the furnace bottom, which burns fire grate,
Band-like face, the waste containing biomass are rested on band dress face and are incinerated.
A kind of system for burning the waste containing biomass using coal-burning boiler provided by the invention, it includes
For burn the waste containing biomass coal-burning boiler burner hearth；
In the first charging aperture for the furnace wall setting that the burner hearth is arranged in；
It is equipped in the lower section of the first charging aperture, the furnace wall for carrying and burning burning for the waste containing biomass
Burn platform；
For carrying out cooling cooling system to the burning platform；
The waste of the burning containing biomass is transported into first charging aperture and is advanced to institute from the first charging aperture
It states and burns platform so as to the feeding system of burning；
One is equipped with second charging aperture in the furnace wall of the lower section of the dry bottom hopper of the burner hearth；And
One furnace bottom burns fire grate, and the furnace bottom burns fire grate movably there is the rolling band in band-like face to form by one, described
Rolling band is driven and loopy moving by a power-equipment, and the outside of the feed inlet is arranged in part of it, and another part setting exists
The lower section of dry bottom hopper in the burner hearth enters on the band-like face outside the second charging aperture in this way and contains biology
The waste of matter can be outside burner hearth into being incinerated below the excessively described dry bottom hopper, and the slag after burning takes one to by the rolling band and goes out
Cinder notch discharge.
Further, the burning platform is made by several hollow pipes being arranged side by side.
Further, the burning platform further comprises inlet header and outlet header, and institute is arranged in the hollow pipe
It states between inlet header and outlet header, the inlet header is connected with affiliated cooling system, is equipped between the hollow pipe
Certain gap is to keep combustion medium to circulate.
Further, the decomposition burns platform and the furnace wall close to arrangement, and certain angle that dips down in the horizontal direction
Degree, 5-30 ° of range.
Further, the cooling system includes support cooling rod, and the furnace wall of the support cooling rod and the burner hearth is fixed
And the decomposition is supported to burn platform.
Further, the feeding system includes feed bin and batcher, and the batcher pushes the waste containing biomass
To burning above platform, its transport on fire grate is realized using the extruding force between the waste, passes through control push speed
It spends to adjust the waste containing biomass in the residence time decomposed on the fire grate for burning platform.
Further, for the cooling system quoted from coal-burning boiler existing system, cooling medium includes any of water, oil, air
Kind.
Further, the cooling system is quoted from coal-burning boiler existing system.
Further, pressure, temperature and flow measuring element are respectively set on the pipeline of the cooling system, and is arranged corresponding
Alarming value and fusing value, cooling air quantity is adjusted according to the variation of pressure and flow and enters the inlet amount of burner hearth, passes through cooling
Pitch adjusts cooling flow, adjusts inlet amount by batcher.
Further, the rolling band that the furnace bottom burns fire grate is equipped with several fire grate segments.
Further, it further includes a frame and an idler wheel that the furnace bottom, which burns fire grate, and the frame supports the entire furnace bottom
Fire grate is burned, ventilation gaps are equipped between the piece and piece of the fire grate segment, so that the air entered outside the burner hearth passes through institute
It states ventilation gaps and enters the waste containing biomass being located in the rolling band, wherein the idler wheel is by the power-equipment band
It moves and rotates, to drive the rolling band mobile.
Further, furnace bottom incinerator ranking is in the burner hearth of the part and negative pressure of the outside of the burner hearth itself
It is internal to constitute a closed space together to guarantee the smelly of the waste containing biomass entered on furnace bottom burning fire grate
Gas is sucked in the burner hearth by the negative pressure.
It further, further include a charging gear for being used to store the waste to be processed containing biomass, the feed dress
Install the top of the rolling band outside the burner hearth, the drain hole that lower end is equipped with, the waste containing biomass is from blowing
Mouth is fallen in the rolling band.
Further, air needed for burning fire grate is quoted from boiler supply air system, including First air, Secondary Air, sealing air, preferably
First air enters fire grate after carrying out pressure regulation shunting.
One aspect of the present invention is set as multiple hollow pipes parallel arrangements, the hollow pipe by that will decompose burning platform
Between there are certain gap, retention (stop) space of the waste containing biomass is played using the pipeline support, utilizes combustion
The advantage of coal burning boiler high temperature incineration, enable from first charging aperture be sent into the waste rubbish full combustion containing biomass,
On the other hand, by by one, rotatably to burn fire grate ingenious with thermal power plant pulverized-coal fired boiler for the furnace bottom that forms of rolling band with band-like face
It combines, the high-temperature residual heat in the dry bottom hopper region below the burner hearth of thermal power plant's pulverized-coal fired boiler is utilized, will be sent from second charging aperture
The waste containing biomass entered carries out burning removal noxious pollutant, so that entire waste treatment effeciency is high, effect is good, reduces
The investment of special construction waste incinerator, operating cost substantially reduce.The present invention can contain life according to using coal-burning boiler consumption
The waste of substance not only realizes the recycling of rubbish, while also sufficiently decomposing dioxin using coal-burning boiler high temperature gas flow, real
Existing waste is innoxious.
Detailed description of the invention
This attached drawing is to provide further understanding of the invention, they are described and constitute part of this application, attached
The embodiment of the present invention is shown, and plays description and interpretation a part of the invention together with this specification.
Fig. 1 is the structural schematic diagram of presently preferred embodiments of the present invention；
Fig. 2 is the structural schematic diagram that platform is burned in decomposition of the invention；
Fig. 3 is the structural schematic diagram of feeding system of the present invention；
Fig. 4 is that furnace wall carries out water screen tube " around stake " arrangement schematic diagram at feed inlet；
Furnace bottom Fig. 5 of the invention burns the structural schematic diagram of fire grate.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural schematic diagram for the existing general coal fired boiler of power plant that the present invention utilizes, and is related to super-pressure, Asia
The various types coal-burning boiler such as critical, overcritical.The present invention provides a kind of side of waste of the coal-burning boiler burning containing biomass
Method and system, as shown in Fig. 1, burner hearth 1, burning platform 6, feeding system 4 and cooling system 7 including coal-fired power station boiler.
Feeding system 4 includes feed bin 44, batcher 45 and level-sensing device 46.
Waste containing biomass be include agricultural stalk, furniture waste material, office waste, food waste residue, house refuse etc.
Solid waste inside, size are no more than 100 × 100 × 100mm, remaining metal, brick, electronics device in solid waste
Part weight accounting is no more than 10%, and the moisture content in solid waste is no more than 30%.
It is provided with first charging aperture 41 in the furnace wall of the burner hearth 101 of coal-fired power station boiler 100, the setting of first charging aperture absolute altitude exists
Between lower layer's burner and furnace arch, furnace nose, it is equipped in the lower section of first charging aperture 41, the furnace wall 102 of burner hearth and is used to burn containing biomass
Waste burning platform 6.Feeding system 4 is equipped near first charging aperture 41 in the outside of coal-fired power station boiler 100,
Platform 6 is burned for the waste containing biomass being collected into be transported to from first charging aperture 41.
Burner hearth 101 is the portions such as the coal dust firing region, including water-cooling wall, burner, combustion air, dry bottom hopper of coal-burning boiler
Part is related to the various types coal-burning boiler such as super-pressure, subcritical, overcritical.
Referring back to Fig. 1, the lower section of burner hearth 1 is dry bottom hopper 50, the lower section of dry bottom hopper 50 be equipped with furnace bottom burn fire grate 24, give
Expect device 19 and slag notch 22.In addition, being equipped with feed inlet 49 on the furnace wall of the lower section of the dry bottom hopper of the burner hearth (see Fig. 5).
Referring to Fig. 1, the furnace wall 102 of 6 side of platform and burner hearth 101 is burned close to arrangement, in itself and 102 junction of furnace wall
First charging aperture 41 is arranged in top, is connected with feeding system 4, the waste containing biomass is entered by first charging aperture 41 in this way
On fire grate, is gradually decomposed, burnt by radiant heat red-hot in burner hearth.The fire grate of platform 6 is burned perpendicular to 102 direction of furnace wall
Two sides have a slightly higher fence, fence and fire grate is linked together and cooling air can be in the two internal run-through.
Coal-burning boiler is formed using powdered pulverized coal particle suspension combustion in hearth zone and stablizes red-hot flow field, in flame
Heart temperature is greater than 1200 DEG C, and specific surface area is generated after coal dust firing and is greater than 200m2The oxides such as calcium, aluminium, the magnesium of/kg, these oxygen
Compound quality is loose, and adsorption capacity is strong, can absorb the harmful substance that the castoff burning containing biomass generates.
It referring back to Fig. 1, burns platform 6 and the inner wall at burner hearth position 11 is set, and the certain angle that dips down in the horizontal direction,
Usually at 5-30 °, it on the one hand can allow the waste containing biomass into burner hearth 101 that can rest in this way and burn platform 101
Upper certain time, so as to full combustion, meanwhile, the lime-ash after burning is slided from burning platform 6 again, falls into cold gray area.
In addition, burning platform 6 is in temperature in 1000 DEG C or more of burner hearth 101, it is necessary to be equipped with cooling system 7, utilize
Cooling water, cooling oil or air are cooled down to platform 6 is burned, preferably cooling water, prevent burning platform 6 impaired.
The cooling system 7 includes support cooling rod 77, cooling regulating valve 78, cooling pipe 79.In addition, can also be equipped with pressure
Force snesor, thermocouple and flow measurement device (not illustrating in figure), they are that temperature or pressure is commonly checked or measured
Etc. parameters component or element.
Referring to fig. 2, burning platform 6 is primary combustion zone of the waste containing biomass in coal-burning boiler, and dimension
The support platform of waste enough burning times containing biomass is held, it uses and is arranged side by side and is passed through by several hollow pipes 21
The small-sized fire grate structure that inlet header is connected with outlet header.Hollow pipe 21 is between each other by group between fin 22 and gap 23
At the horizontal structure of hollow pipe 21 and the formation seamless connectivity of fin 22, the percolate that the waste of biomass generates is at this
Evaporation, decomposition during stopping on horizontal structure, 23 part of gap form waste pair
Stream promotes burning while the particle in afterburnt being made to fall into dry bottom hopper by the gap, forms clinker.
Referring to fig. 4, furnace wall 102 carries out water screen tube 602 " around stake " arrangement, furnace wall 102 and first at first charging aperture
Feeder channel is formed negative pressure state using the negative pressure of coal-burning boiler, prevents peculiar smell to ambient enviroment by 41 seamless welding of feed inlet
Diffusion.
Fig. 3 is the schematic diagram of feeding system 4, wherein feed bin 44 can be used for the storage of the waste containing biomass, can be attached
The band measuring instrumentss such as level-sensing device, thermocouple measurement volume and temperature.The lower section of feed bin 44 is equipped with discharging lock gate hatch 41, and is arranged swollen
Swollen section 42 is connected with batcher.Discharging lock gate hatch 41 can control the waste containing biomass in feed bin 44 to enter batcher 45.
The lower section of expansion joint 42 is arranged in batcher 45, is made of charging ram 451, pusher front end-plate 452 and feeder channel 453.It gives
Expect that channel 453 is a pipeline configuration, horizontally disposed, top is connected to feed bin 4, and right side is connected with burning platform 6 is decomposed.Before pusher
The left side in feeder channel 453 is arranged in end plate 452, is connected with charging ram 451.Charging ram 451, can be horizontal by powered
It is mobile, in this way, pusher front end-plate 452 moves horizontally in feeder channel 453, will be fallen from the feed bin 4 of top containing biomass
Waste push by first charging aperture 101 shift onto decomposition burn platform 6 on.
Waste containing biomass is proposed equipment and is transported to feed bin 44 by struggling against, according to the selection of the material position of feed bin 44 plus the frequency in storehouse
And speed, discharging lock gate hatch 41 keep linking with batcher 45, the speed that batcher 45 keeps certain is pushed away toward burning platform is decomposed
The waste (rubbish) containing biomass is sent, in this way, just realizing that rubbish is decomposing burning platform 6 using the extruding force between rubbish
Transport (movement) on fire grate is adjusted the waste containing biomass by control feeding coal and is decomposing the fire grate for burning platform 6
On residence time, realize that burning is abundant.
In addition, burning platform 6 is equipped with inner wall temperature measuring device, industrial television (monitoring is set near feed opening
Device), cooling wind flow is adjusted according to inner wall temperature, delivery rate, structure branch are adjusted according to the thickness of feed layer of industrial television observation
Support is fixed using furnace inner bracing piece and furnace external fastening element, and horizontal position is flushed with material inlet.
Meanwhile using the support cooling rod 77 of hollow circular-tube structure and platform 6, burner hearth 101 are burned, furnace wall 102 is formed surely
Solid three-legged structure with support cooling rod 77 be hollow circular-tube structure, meanwhile, hollow interior can be passed through the cooling water of cooling system 7
To maintain support rod 7 can be within the temperature range of security settings, another way cooling water be sent into the above-mentioned import decomposed and burn platform 6
Header inside the hollow pipe 21 of fire grate tube bank, and returns to coal-burning boiler existing system by outlet header.
Moreover, the cooling water of above-mentioned cooling system is preferably quoted from the condensate system of coal-burning boiler, cooling water follows boiler
Start and stop, no matter whether feeding system feeds.The cooling pipe 79 of cooling system 7 is equipped with two-way, burns platform 6 with decomposition all the way
Inlet header is connected, and another way is connected with support cooling rod 77.
Pressure, temperature and flow measuring element are respectively set on cooling system 7, and corresponding alarming value and fusing are set
Value adjusts cooling air quantity according to the variation of the pressure of said determination and flow and enters the inlet amount of burner hearth, passes through cooling wind tune
Door adjusts air quantity, adjusts inlet amount by batcher 45.
Temperature element (TE 10,11,12 is respectively set in decomposing the boiler flue burned above platform 6, each section of real-time measurement
Flue-gas temperature, to adjust the factors such as boiler capacity, coal and soot-blowing mode, when guaranteeing the enough stop of flue gas of refuse burning
Between.
Referring back to Fig. 1 and Fig. 5, it is of the invention a kind of burned using coal-burning boiler containing biomass that furnace bottom, which burns fire grate 24,
Another primary combustion zone in existing coal-burning boiler of the system of waste.Furnace bottom burn fire grate 4 include frame 120,
Idler wheel 114, the rolling band 50 and fire grate segment 141 rotatably by one with band-like face.Fire grate segment 141 is manufactured by cast iron, is assembled in
In rolling band 50, in this way, keeping necessary ventilation gaps between its piece and piece, contain so that the air of entrance is entered by the gap
The material bed promotion of the waste of biomass is burnt.Furnace bottom burns the outside of a part setting second charging aperture 49 of fire grate 24,
Another part is arranged in second charging aperture 49 and pulverized-coal fired boiler and is used to be discharged between the slag notch 22 of lime-ash and be arranged described
The lower section of the dry bottom hopper 50 of burner hearth 1.Idler wheel 114 is driven by a common power-equipment and is rotated, and then rolling band 50 is mobile, thus
Drive fire grate segment 141 mobile.In this way, from the band-like face that the outside of second charging aperture 49 enters rolling band 50 containing biomass
Waste can be incinerated outside burner hearth 1 into the lower section of dry bottom hopper 50, and the slag after burning takes slag notch 22 to by rolling band 50
Discharge.
Charging gear 19 is used to store the waste containing biomass, in this way, the waste containing biomass is from outside burner hearth 1
One drain hole even drop down of the hopper 91 of the charging gear 19 of the fire grate front end in face burns on fire grate 24 in furnace bottom, in addition, giving
Expect that the above-mentioned drain hole of device 19 is equipped with insertion plate door 18, is inserted in this way, the material bed thickness of the waste containing biomass is available
Moving left and right for plate door 18 is adjusted.With moving backward for fire grate segment 141, when entering the lower section of dry bottom hopper 50, containing life
The waste of substance is by catching fire, burning until burning out.
The position of the correspondence furnace wall of fire grate 24 is burned in furnace bottom or is equipped with several outsides by slag extractor shell two sides and head
Air-supply access aperture 142, outside air-supply may be derived from boiler supply air system, preferably First air, one point taken in heat primary air main pipe
Branch accesses header, and branched pipe setting pressure regulator valve is adjusted air pressure air flow, air hose is drawn in the header and is communicated with hole 142,
Heat primary air can be easy to enter in furnace by the hole 142, and the ventilation gaps between the piece and piece for passing through fire grate segment 141 enter object
The bed of material promotes the burning of rubbish.The available manually or mechanically method of lime-ash after burning-up is discharged from slag notch 22.Needed for waste incineration
The primary power wanted comes from radiation of burner hearth and high temperature furnace slag.Certainly, outside air-supply is also possible to be derived from the wind outside boiler.
In addition, in the present embodiment, frame 120 has sealing function, the outer of the second charging aperture 49 of burner hearth 1 can will be located at
Portion constitutes a closed space together with the inside of the burner hearth 1 of negative pressure itself, burns containing for fire grate 24 to guarantee to enter furnace bottom
The foul smell of the waste of biomass has well solved refuse disposal installation by the negative pressure sucking burner hearth 1 of 1 inside of burner hearth itself
Foul smell the problem of leaking.
In addition, charging gear 19 of the invention can seal against each other the charging gear 19 for connecting, sealing in this way with frame 120
It may operate under negative pressure state, it is excessive to avoid domestic waste peculiar smell.In addition, burning the mobile speed of fire grate 24 by control
Degree, can control burning time of the material on fire grate 24, burns it sufficiently.
By above description as can be seen that creativeness of the invention is also resided in traditional air-cooled dry-type slag discharging machine and fire
Pulverized coal power boiler combines, using the transporting chain plate of air-cooled dry-type slag discharging machine as burning fire grate and using in coal-powder boiler
High temperature carries out the burning of rubbish and the pyrolytic processing of noxious pollutant.
The wind of access aperture 142 is up blown from the lower part for burning fire grate 24, primarily serves dry, loosening and combustion-supporting effect.
In particular, being usually in negative pressure state in coal-powder boiler operation, cooling wind is under the action of boiler furnace negative pressure, by slag extractor shell
The adjustable air outlet that two sides and head open up enters inside equipment, is then flowed up by the lower part of burning fire grate.Containing biomass
Castoff burning required for primary power come from radiation of burner hearth and high temperature furnace slag.
Before the waste containing biomass enters and burns fire grate 24, coal-burning boiler has been started up completion, is in stable
Under state, the radiant heat that coal dust firing is formed in burner hearth 1 is suitable for containing so that burning fire grate 24 is in stable burning situation
The larger situation of the waste calorific value and component fluctuation of biomass, adaptability is good, and burns fire grate 24 without spraying into auxiliary combustion
Material oil, the energy saving energy reduce cost.
By above description, a kind of method for burning the waste containing biomass using coal-burning boiler provided by the invention
Include:
First charging aperture 41 is equipped in the furnace wall at the position of the burner hearth 1 of coal-burning boiler；
It is equipped in the lower section of the first charging aperture 41, the inner wall of burner hearth 1 and is used to carry and burn discarding containing biomass
The burning platform 6 of object；
Carrying out cooling to the burning platform 6 prevents burning platform 6 impaired；
The waste transport containing biomass that will be burned is collected near the first charging aperture 41；
The waste containing biomass being collected into is fed in the burning platform 6 so as to from described discarded containing biomass
Object is decomposed using hyperthermia radiation in the burner hearth on the burning platform 6, is burnt；
Second charging aperture 49 is equipped in the furnace wall of the lower section of the dry bottom hopper 50 of the burner hearth；
The waste containing biomass is brought into from the second charging aperture 49 in the outside of the second charging aperture 49, and
The lower section of the dry bottom hopper 50 is constantly pushed to the slag notch 22, and the waste containing biomass is in the process being pushed into
In by burner hearth 1 middle coal dust suspension combustion bring radiations heat energy and heat burning；And
Product through the waste containing biomass described in burning is discharged from the slag notch 22.
It is completed in the environment of 200 DEG C to 500 DEG C since the synthetic reaction of dioxin is substantially, the present invention will contain biology
For the waste of matter directly as furnace combustion zone domain, furnace flame central temperature is greater than 1200 DEG C, can make discarded containing biomass
Object burns more than dioxin synthesis temperature range and combustion products stops 2s or more, decomposes dioxin precursor and burning
The dioxin generated in the process.
One aspect of the present invention is set as multiple hollow pipes parallel arrangements, the hollow pipe by that will decompose burning platform
Between there are certain gap, retention (stop) space of the waste containing biomass is played using the pipeline support, utilizes combustion
The advantage of coal burning boiler high temperature incineration, enable from first charging aperture be sent into the waste rubbish full combustion containing biomass,
On the other hand, by by one, rotatably to burn fire grate ingenious with thermal power plant pulverized-coal fired boiler for the furnace bottom that forms of rolling band with band-like face
It combines, the high-temperature residual heat in the dry bottom hopper region below the burner hearth of thermal power plant's pulverized-coal fired boiler is utilized, will be sent from second charging aperture
The waste containing biomass entered carries out burning removal noxious pollutant, so that entire waste treatment effeciency is high, effect is good, reduces
The investment of special construction waste incinerator, operating cost substantially reduce.The present invention can contain life according to using coal-burning boiler consumption
The waste of substance not only realizes the recycling of rubbish, while also sufficiently decomposing dioxin using coal-burning boiler high temperature gas flow, real
Existing waste is innoxious.
In particular, a kind of coal-burning boiler provided by the invention burns the method and system of the waste containing biomass, sufficiently
Using the coal-burning boiler in existing power station, coal-burning boiler burner hearth flame kernel temperature is higher than 400 DEG C of conventional rubbish incinerator or more,
So that organic matter thoroughly decomposes, flue gas reaches combustion after the ultra-clean exhaust system of coal-burning boiler (SCR+ bag-type dust+wet desulphurization)
Coal burning boiler and the dual discharge standard of waste incinerator, release heat enters turbine generator system after the waste combustion containing biomass
System, it is achieving environmental protection and energy saving.
Finally it is noted that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (18)
1. a kind of method that the waste containing biomass is burned in coal-fired power station boiler classification, which is characterized in that it includes:
First charging aperture is equipped in the furnace wall at the burner hearth position of coal-fired power station boiler；
The burning for being used to carry and burn the waste containing biomass is equipped in the lower section of the first charging aperture, the inner wall of burner hearth
Platform；
Carrying out cooling to the burning platform prevents burning platform impaired；
The waste transport containing biomass that will be burned is collected near the first charging aperture；
The waste containing biomass being collected into is sent into the burning platform so that the waste containing biomass is described
It burns and is decomposed, burnt using hyperthermia radiation in the burner hearth on platform；
Second charging aperture is equipped in the furnace wall of the lower section of the dry bottom hopper of the burner hearth；
The waste containing biomass is brought into from the second charging aperture in the outside of the second charging aperture, and in the cold ash
The lower section of bucket is constantly pushed to slag notch, and the waste containing biomass is during being pushed by coal dust in burner hearth
Suspension combustion bring radiations heat energy and heat burning；And
Product through the waste containing biomass described in burning is discharged from the slag notch.
2. the method that the waste containing biomass is burned in coal-fired power station boiler classification as described in claim 1, which is characterized in that
The burning platform is made by several pipelines being arranged side by side.
3. the method that the waste containing biomass is burned in coal-fired power station boiler classification as described in claim 1, which is characterized in that
The burning platform dips down certain angle in the horizontal direction.
4. the method that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 3, which is characterized in that
The certain angle is 5-30 °, on the one hand can allow the waste containing biomass into burner hearth that can rest on burning so flat
Certain time on platform, so as to full combustion, meanwhile, the lime-ash after burning is slided from burning platform again, falls into cold gray area.
5. the method that the waste containing biomass is burned in coal-fired power station boiler classification as described in claim 1, which is characterized in that
The space of waste of the outside storage containing biomass of the second charging aperture passes through the second charging aperture and negative pressure itself
A closed space is constituted inside the burner hearth together.
6. the method that the waste containing biomass is burned in coal-fired power station boiler classification as described in claim 1, which is characterized in that
The waste containing biomass send boiler during the lower section of the dry bottom hopper is constantly pushed to the slag notch
Wherein a branch is introduced into the lower section of dry bottom hopper and the waste containing biomass being pushed into is promoted further to fire wind system
It burns.
7. the method that the waste containing biomass is burned in coal-fired power station boiler classification as described in claim 1, which is characterized in that
The waste containing biomass burns fire grate in the furnace bottom that the lower section of the dry bottom hopper is moved and is constantly pushed to described slag tap
Mouthful, and it is to constitute horizontal band-like face by the fire grate segment between each other with ventilation gap that the furnace bottom, which burns fire grate, it is described to contain
The waste of biomass is rested on the band-like face and is incinerated.
8. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification, which is characterized in that it includes:
For burn the waste containing biomass coal-fired power station boiler burner hearth；
In the first charging aperture that the furnace wall of the burner hearth is arranged；
The burning for being used to carry and burn the waste containing biomass is equipped in the lower section of the first charging aperture, the furnace wall to put down
Platform；
For carrying out cooling cooling system to the burning platform；
The waste of the burning containing biomass is transported into first charging aperture and is advanced to described burn from the first charging aperture
Platform is burnt so as to the feeding system of burning；
Second charging aperture is equipped in the furnace wall of the lower section of the dry bottom hopper of the burner hearth；And
One furnace bottom burns fire grate, and the furnace bottom burns fire grate movably there is the rolling band in band-like face to form by one, the rolling band
It is driven and loopy moving by a power-equipment, the outside of the second charging aperture is arranged in part of it, and another part setting exists
The lower section of dry bottom hopper in the burner hearth enters on the band-like face outside the second charging aperture in this way and contains biology
The waste of matter can enter below the dry bottom hopper outside burner hearth to be incinerated, and the slag after burning is taken to by the rolling band slags tap
Mouth discharge.
9. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 8, feature
It is, the burning platform is made by several hollow pipes being arranged side by side.
10. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 9, feature
It is, the burning platform further comprises inlet header and outlet header, and the hollow pipe setting joins in the import
Between case and outlet header, the inlet header is connected with the cooling system, between being equipped with centainly between the hollow pipe
Gap is to keep combustion medium to circulate.
11. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 10, special
Sign is that the burning platform and the furnace wall are close to arrangement, and the certain angle that dips down in the horizontal direction, 5-30 ° of range.
12. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 11, special
Sign is that the cooling system includes support cooling rod, and the furnace wall of the support cooling rod and the burner hearth is fixed and supports institute
State burning platform.
13. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 8, feature
It is, the feeding system includes feed bin and batcher, and the waste containing biomass is pushed to burning platform by the batcher
Its transport on fire grate is realized using the extruding force between the waste in top, is contained by control pushing speed to adjust
Residence time of the waste of biomass on the fire grate for burning platform.
14. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 8, feature
Be, the cooling system quoted from coal-fired power station boiler existing system, cooling medium include water, oil, air it is any.
15. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 8, feature
It is, the rolling band that the furnace bottom burns fire grate is equipped with several fire grate segments.
16. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 15, special
Sign is that it further includes a frame and an idler wheel that the furnace bottom, which burns fire grate, and the frame supports the entire furnace bottom to burn fire grate,
Ventilation gaps are equipped between the piece and piece of the fire grate segment, so that the air entered outside the burner hearth passes through the ventilation gaps
Into the waste containing biomass being located in the rolling band, wherein the idler wheel is driven by the power-equipment and is rotated, from
And drive the rolling band mobile.
17. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 8, feature
It is, furnace bottom incinerator ranking structure together with the inside of the burner hearth of the part and negative pressure of the outside of the burner hearth itself
At a closed space to guarantee the foul smell of the waste containing biomass entered on furnace bottom burning fire grate by described negative
Pressure sucks in the burner hearth.
18. a kind of system that the waste containing biomass is burned in coal-fired power station boiler classification as claimed in claim 8, feature
It is, further includes a charging gear for being used to store the waste to be processed containing biomass, the charging gear is arranged in institute
The top of the rolling band outside burner hearth is stated, lower end is equipped with drain hole, and the waste containing biomass falls on institute from the drain hole
It states in rolling band.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2017102950892 | 2017-04-28 | ||
| CN2017102964467 | 2017-04-28 | ||
| CN201710296446 | 2017-04-28 | ||
| CN201710295089 | 2017-04-28 |
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| CN108506938A CN108506938A (en) | 2018-09-07 |
| CN108506938B true CN108506938B (en) | 2019-11-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA3147854A1 (en) * | 2019-07-05 | 2021-01-14 | Hitachi Zosen Inova Ag | Grate block for a combustion grate |
| CN113953073B (en) * | 2021-09-22 | 2022-07-12 | 国能龙源环保有限公司 | Large-scale coal fired boiler coupling is useless storage transportation feeding system useless admittedly |
| CN114719270A (en) * | 2022-03-11 | 2022-07-08 | 哈尔滨博深科技发展有限公司 | Pulverized coal fired boiler capable of directly mixing and burning garbage and harmless treatment method of mixed and burned garbage |
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| US4056069A (en) * | 1975-04-07 | 1977-11-01 | Imperial Metal Industries (Kynoch) Limited | Method of burning refuse |
| JPH11108324A (en) * | 1997-10-02 | 1999-04-23 | Chugoku Electric Power Co Inc:The | Mixed burning method for waste |
| CN201184603Y (en) * | 2007-12-14 | 2009-01-21 | 南京林业大学 | Additional device of chain-grate stoker coal-burning boiler capable of combusting agricultural wastes |
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Address after: 200437, room 9, building 171, 801 Handan Road, Shanghai, Hongkou District Applicant after: Shanghai Minghua Power Technology Co., Ltd. Applicant after: Shanghai Electric Power Co., Ltd. Address before: 200437, room 9, building 171, 801 Handan Road, Shanghai, Hongkou District Applicant before: Shanghai Minghua Electric Power Technology Engineering Co., Ltd. Applicant before: Shanghai Electric Power Co., Ltd. |
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