CN108117383A - A kind of recirculating fluidized bed calcination activation turns round coproduction stove application method - Google Patents
A kind of recirculating fluidized bed calcination activation turns round coproduction stove application method Download PDFInfo
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- CN108117383A CN108117383A CN201711451627.9A CN201711451627A CN108117383A CN 108117383 A CN108117383 A CN 108117383A CN 201711451627 A CN201711451627 A CN 201711451627A CN 108117383 A CN108117383 A CN 108117383A
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- calcination activation
- fluidized bed
- temperature
- rotary furnace
- rotating cylinder
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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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
- 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
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
Abstract
The present invention relates to environmental protection and resources circulation technical field of comprehensive utilization, and in particular to a kind of recirculating fluidized bed calcination activation turns round coproduction stove application method.It is characterized in that：Including calcination activation rotary furnace, circulating fluidized bed combustion coal boiler, electric bag dust extractor, calcination activation rotary furnace is designed between the combustion system of circulating fluidized bed combustion coal boiler and heat-exchange system, particularly the hot-flow flue of calcination activation rotary furnace is connected with the cyclone separator of circulating fluidized bed combustion coal boiler, the high-temperature flue gas of the air classifier discharge of calcination activation rotary furnace passes through the superheater of circulating fluidized bed combustion coal boiler successively, economizer, air preheater exchanges heat, electric bag dust extractor is the finished product capturing device of calcination activation rotary furnace and the environment-friendly processing unit of circulating fluidized bed combustion coal boiler waste gas particulate matter simultaneously.
Description
Technical field
The present invention relates to environmental protection and resources circulation technical field of comprehensive utilization, and in particular to a kind of recirculating fluidized bed roasting is lived
Change revolution coproduction stove application method.
Background technology
Kaolin purposes is very extensive, is mainly used for the industries such as papermaking, ceramics, rubber and plastic, chemical industry, coating, medicine, kaolin
Main mineral constituent is kaolinite, and kaolinic crystal-chemical formula is 2SiO2·Al2O3·2H2O has by calcine technology removing
Machine matter, lattice reconstruct；Mechanical crushing and the enough fineness of air-flow crushing prepare cable plastics and rubber seal etc. and fill out to meet
The requirement of material, papermaking paint, molecular sieve, catalyst carrier.Circulating fluidized bed combustion coal boiler fly ash be during boiler for producing most
Common discarded object, main component SiO2、Al2O3It is the occupational root of pneumoconiosis, to personnel in workplace
Injury it is larger, be easy to cause the occupational diseases such as pneumoconiosis, the aerial dust of loss is polluted the environment, how turned waste into wealth
And it is always that the art engineers and technicians want to be solved the problems, such as that high-value-use, which prepares kaolin, wherein needing to solve
Existing practical problem include obtaining enough fineness, the various proportioning directed agents of addition and suitable technological equipment so that following
Ring fluid bed coal-burning boiler flying dust prepare kaolin meet papermaking, ceramics, rubber and plastic, coating, Enamel Industry requirement chemistry into
Point and physical performance index.Chinese invention patent（Patent No. CN 201610683499.X, patent name is outside sludge roller
Heat drying is integrated with Incineration in CFB and exhaust gas cleaner）Disclose a kind of outer heat drying of sludge roller and recycle stream
Fluidized-bed incineration integration and exhaust gas cleaner, it is characterised in that：It includes recirculating fluidized bed, anhydration system and tail gas clean-up system
System, anhydration system include rotary kiln roller, wind turbine and condenser, and rotary kiln roller interts the afterbody cigarette for being arranged on recirculating fluidized bed
On road, after moisture removal is removed in the condensed device condensation of the vapor and foul smell that are generated in wet mud drying process, recirculating fluidized bed is sent into
Hearth combustion deodorization；It is set in back-end ductwork there are two air preheater, respectively with being set on the burner hearth of recirculating fluidized bed
Primary air nozzle connected with overfiren air port；Exhaust gas purification system includes the activated carbon injection dress set gradually after air preheater
It puts, bag filter and wet desulfurization system；Air shooter and one is set between bag filter and wet desulfurization system
Secondary air port connection；The present invention is used for the desiccation and burning of sludge.Chinese invention patent（Patent No. CN201510884574.4,
Patent name is a kind of polygenerations systeme and method based on pyrolysis of coal）It discloses a kind of multi-joint based on pyrolysis of coal
System and method is produced, it is characterized in that, including being capable of each the coal pyrolysis unit of independent operating and coal-char combustion power generation unit；Institute
State coal pyrolysis unit include sequentially connected drier, preheater, pyrolysis kiln, high-temperature gas filter, pyrolysis air cooling and
Waste-heat recovery device, the second cooler and tar electric trapper and the fluidized bed furnace being connected with pyrolysis kiln；The coal-char combustion power generation
Unit includes the circulating fluidized bed boiler being connected with pyrolysis kiln, the heat recovery boiler being connected with circulating fluidized bed boiler and cold slag
Device, the steam turbine being connected with circulating fluidized bed boiler and heat recovery boiler and the generator being connected with steam turbine；The heat
Solution air cooling and waste-heat recovery device, heat recovery boiler and slag cooler are connected with drier, for providing heat to drier
Flue gas；The hot semicoke generated after being pyrolyzed by coal pyrolysis unit, most is directly entered burning in circulating fluid bed boiler hair
Electricity, another fraction then into fluidized bed furnace, generate the heat smoke needed for for pyrolysis；When coal pyrolysis unit and coal-char combustion power generation
One in unit when breaking down, cut-out coupling link, another unit therein still is able to independent operating.
The technical solution purpose that the prior art 1 proposes is to provide a kind of outer heat drying of sludge roller and Incineration in CFB
Integration and exhaust gas cleaner, are closer to the designing scheme of this case, but the burner hearth of circulating fluidized bed combustion coal boiler
Outlet temperature is 900 ± 50 DEG C of temperature, and kaolinic calcination activation temperature requirement reaches 900~1280 DEG C, rotary kiln rolling
It can only be drying functions that cylinder is interspersed, which to be arranged on heating on the back-end ductwork of recirculating fluidized bed, and can not meet needed for calcination activation
Technological temperature condition；The prior art 2 is using the coal-fired hot carbocoal tar pneumatic transmission circulating fluidized bed boiler combustion after rotary kiln cracking
Power generation is burnt, another part carbocoal tar pneumatic transmission fluidized bed furnace generates hot wind for coal-fired cracking institute calorific requirement, do not refer to recirculating fluidized bed
The circulation comprehensive of burned-coal fly ash utilizes.
The content of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of recirculating fluidized bed calcination activations to turn round coproduction stove
Application method, it is characterized in that：
Step 1, fire coal is after the burner hearth fluidized bed combustion of circulating fluidized bed combustion coal boiler into cyclone separator, cyclone separator
The larger high-temperature solid particle separated enters revert system, and high-temperature solid particle forms stock column in the standpipe of material returning device,
There is U-shaped valve between standpipe and refeed line, there is isobaric air compartment air-supply in U-shaped valve bottom to ensure that high-temperature solid particle fluidizes, in standpipe
Stock column and gun pressure pressure differential high-temperature solid particle by refeed line successively to burner hearth conveying burn again, in returning charge
The port of export design guide wire of pipe, exporting flue gas by air-vent makes guiding room be always negative pressure state, so as to reduce refeed line
Local gun pressure is exported, the high temperature coal particle for falling into negative pressure chamber is fluidized through blowing chamber air-supply cooling and discharged through air-vent, with
The circulating fluidized bed combustion coal boiler fly ash of this cyclone separator discharge simultaneously is carried by high-temperature flue gas is sent into calcination activation rotary furnace
As preparing kaolinic raw material.
Step 2, idler assembly include roller set, pedestal, bushing two groups of roller-way components before and after calcination activation rotating cylinder,
Positioning is erected on idler assembly, and circle gear is bushed on calcination activation rotating cylinder, in the driving lower band of drive gear assemblies
Dynamic calcination activation rotating cylinder is turned round around own central axis line, and drive gear assemblies include drive gear and transmission system.
Step 3, calcination activation rotary furnace cylinder assembly include mechanical sealing assembly I, circle gear, calcination activation revolving drum
Body, roller-way component, high aluminium ball stack layers, mechanical sealing assembly II lay high aluminium ball stack layers in calcination activation rotating cylinder, due to
Abrasion and the reason for not stopping supplement, high aluminium ball stack layers form the ball filler that diameter differs, and high aluminium ball is returned in calcination activation
Do not stop rolling, phase mutual friction when being turned round in drum body with it.
Step 4, the materials such as directed agents are delivered into injector by the auger conveyor of distributor, while high-temperature flue gas is held under the arm
Band circulating fluidized bed combustion coal boiler fly ash enters from hot-flow flue after injector is mixed with materials such as directed agents to be flutterred through spreader guiding
To the spiral blade of distributor, acted on along spiral blade rolling tangential direction and got rid of into calcination activation rotating cylinder by centrifugal force
Wall is lost kinetic energy by the effects that wall friction, high aluminium ball stack layers, gravity, spiral blade hinder in calcination activation rotating cylinder and stopped
In bottom, high aluminium ball stack layers suspend simultaneously mutual rubbing therebetween, complete activation at a temperature of 900~1280 DEG C in stove and grind
Wear into the kaolin finished particle of enough fineness.
Step 5, air classifier inlet design are three along the circumferential direction uniformly distributed spiral imports, can avoid calcination activation
The distinguished and admirable road short circuit of rotary furnace cylinder assembly both ends cigarette and guide that spiral blade raises along calcination activation rotating cylinder spiral inner wall
The whirlwind wind band of advance, the path for the spiral whirlwind wind band that high-temperature flue gas is raised along spiral blade, which is advanced, sweeps along fineness is qualified to enter
Air classifier, so as to sub-elect the more uniform finished particle of activation degree and fineness.
Step 6, from air classifier discharge high-temperature flue gas successively through superheater, economizer, air preheater heat exchange after, flue gas temperature
Degree is down to 150~160 DEG C, and flue gas carries kaolin finished particle and enters electric bag dust extractor, in this flue gas and kaolin finished product
Particle separates, and kaolin finished particle is sent to next process through the trapping of electric bag dust extractor, and tail gas reaches after environmental protection facility is handled
Mark discharge.
Inventor has found that fire coal divides after 900 ± 50 DEG C of temperature of recirculating fluidized bed burner hearth are burnt, then through cyclone separator
From coarse granule returns to burner hearth through material returning device and burns away, 38 μm of the fine grained grain size carried in the flue gas of cyclone separator discharge
~58 μm, main component Al2O3、SiO2With uncombusted C, it is known as circulating fluidized bed combustion coal boiler fly ash, with good work
The main component SiO of property2Content is about 45~55%, Al2O3Content is about 35~38%, and uncombusted C content is about 3~5%, as
Impurity component Si forms SiO after circulating fluidized bed combustion coal boiler furnace high temperature is burnt under the relatively low situation of oxygen amount in coal2Gas
Colloidal sol, with Al2O3It carried under one's arms with uncombusted C particles by high velocity smoke, hit broken, separating at high temperature and enter calcination activation rotary furnace, had
There are larger specific surface area and cation exchange capacity, in other words, circulating fluidized bed combustion coal boiler fly ash fineness is compared with kaolinite
That the fineness reached through mechanical crushing had and too late, activity function is more preferable, and impurity is less.
Inventor has found, the high-value-use that realize circulating fluidized bed combustion coal boiler fly ash prepare kaolin, it is necessary to according to
《Kaolin and its test method》GB/T 14563-2008 reach its chemical composition and physical property requirements, although every profession and trade pair
The specific requirement of kaolin clay filler is not quite identical, but wherein fineness and Al2O3/SiO2Than having more specific regulation, therefore profit
Do not stop rolling, phase mutual friction when being turned round with high aluminium ball in calcination activation rotary furnace with it, realize and returned to resting on calcination activation
The grinding of converter bottom cycle fluidized bed burned-coal boiler fly ash, and under 900~1280 DEG C of high temperature of calcination activation, Al2O3、
SiO2Since intermolecular bonding energy declines, spacing increases while completing lattice reconstruct, it is readily available under high aluminium ball rubbing
Fineness reaches 1000~1200 mesh kaolin finished products, while the component particles that the mutual rubbing of high aluminium ball comes off also add to height
In the soil finished product of ridge, separated impurity is not needed.
Inventor find, if to realize circulating fluidized bed combustion coal boiler fly ash high-value-use prepare kaolin and fully
Using the waste heat of calcination activation rotary furnace discharge high-temperature flue gas, designed using calcination activation rotary furnace in circulating fluidized bed combustion coal pot
Technical solution between the combustion system and heat-exchange system of stove can realize above-mentioned target, particularly calcination activation rotary furnace
Hot-flow flue is connected with the cyclone separator of circulating fluidized bed combustion coal boiler, the high temperature cigarette of the air classifier discharge of calcination activation rotary furnace
Gas is successively by superheater, economizer, the air preheater heat exchange of circulating fluidized bed combustion coal boiler.
Inventor's discovery,《Cleaner design and installation operation and maintenance and standard criterion operating guidance》（Jilin phonotape and videotape is published
Society publishes, publication date in September, 2003）It explicitly points out, electrostatic fabric filter even high temperature gathers dust, and flue-gas temperature can not be high
In 400 DEG C, calcination activation rotary furnace discharges high-temperature flue gas after superheater, economizer, air preheater heat exchange cooling, disclosure satisfy that
Use condition is stated, electrostatic fabric filter reaches while is the finished product capturing device of calcination activation rotary furnace and circulating fluidized bed combustion coal pot
The purpose of the environment-friendly processing unit of furnace exhaust particulate matter.
Inventor has found, since the temperature in use of calcination activation rotary furnace calcination activation is 900~1280 DEG C, and recycle stream
Change the temperature of bed coal-burning boiler thorax as 900 ± 50 DEG C, because more than after above-mentioned temperature, fluosolids, that is, coking loses fluidized state and leads
Cause is unable to operate normally, while burner hearth no longer arranges heating surface, calcination activation in addition to fluidisation layer segment arrangement water wall surface
The solution of operating temperature needed for rotary furnace is inside conveying fine coal powder burning to supplement required calorific value.
Inventor has found that the effect of material returning device is the high-temperature solid particle that cyclone separator is separated, and is led to through standpipe
The isobaric air compartment air-supply of bottom is crossed, burner hearth is sent back to by refeed line and is burnt again, there is U-shaped valve, U-shaped valve between standpipe and refeed line
Bottom has isobaric air compartment air-supply to ensure that high-temperature solid particle fluidizes.The pressure difference of stock column and gun pressure is driving in standpipe in standpipe
The guarantee that high-temperature solid particle is successively conveyed to burner hearth.Since this case is recirculating fluidized bed roasting revolution all-in-one oven, roast
The discharge end of rotary furnace is activated as air classifier, design requirement flue gas flow rate is relatively low, to reduce the finished particle kinetic energy carried, so as to
Sub-elect the finished particle of enough fineness, and to burner hearth air-supply need to overcome burner hearth, cyclone separator, injector, spiral blade,
The resistance of the components such as air classifier, therefore the air-supply requirement to circulating fluidized bed combustion coal boiler thorax is that wind pressure is big, air quantity is small, therefore stove
The pressure head of thorax is larger, by the requirement of the pressure balance of stock column and gun pressure in above-mentioned standpipe, then the stock column requirement for height of standpipe is set
Count higher, i.e., the returning charge amount of high-temperature solid particle is just high, and returning charge amount and the recirculating fluidized bed into calcination activation rotary furnace
The ratio of coal-burning boiler flying dust determines that in other words, returning charge amount increase, circulating fluidized bed combustion coal boiler flies via cyclone separator
Ash increase, the load increase of air classifier, separated efficiency reduce.To solve the above problems, the port of export design in refeed line is led
Draw room, guiding room is negative pressure state, by designing the guide wire by refeed line outlet, reduces the local thorax in refeed line outlet
Pressure so as to reduce the stock column height of standpipe, realizes material balance and ensures the purpose of separative efficiency, make circulating fluidized bed combustion coal pot
Stove can effectively be combined and be run well with calcination activation rotary furnace.
Inventor has found, to prevent exhaust emission from leaking, and calcination activation rotary furnace both ends need the sealing of reliable design, by
In furnace body internal-external temperature difference is larger and fineness of materials is up to more than 1000 mesh, and working condition is barotropic state, the sealings such as labyrinth, filler
Form is easy to fail, and only mechanical seal is relatively suitble to, and being typically employed in dynamic and static ring sealing face spray hydraulic oil just can be very well
The purpose of solving cooling, lubricating, is dust-proof.
Inventor has found that the purpose for designing distributor is the powders such as supplement high aluminium ball and conveying directed agents, cleaned coal, is gone out at it
Design spreader main purpose in mouth end is to disperse above-mentioned material and uniformly mixed with circulating fluidized bed combustion coal boiler fly ash, uniformly mixed
Powder after conjunction is swept along by high-temperature flue gas jumps on spiral blade, by centrifugal force effect along spiral blade rolling tangential direction get rid of to
Calcination activation rotary furnace inner wall is lost kinetic energy by the effects that inboard wall of furnace body friction, high aluminium ball stack layers, gravity, spiral blade obstruction
Bottom of furnace body is rested on, by the mutual rubbing of high aluminium ball, obtains and is swept along feeding air classifier by flue gas after enough fineness.
Inventor has found that air classifier inlet design is three along the circumferential direction uniformly distributed spiral imports, can avoid roasting
The distinguished and admirable road short circuit of activation rotary furnace both ends cigarette and guide that spiral blade raises advance along calcination activation rotating cylinder spiral inner wall
Whirlwind wind band, and since import draught area relatively exports big, flue gas flow rate reduces under conditions of equal ventilation quantity, also means
The particle kinetic energy of carrying reduces, so as to sub-elect the finished particle of enough fineness.
Compared with the prior art, the present invention, which at least contains, to be had the advantage that：First, circulating fluidized bed combustion coal boiler fly ash is pot
Most common discarded object in stove production process, it is larger to the injury of personnel in workplace, the occupational diseases such as pneumoconiosis are be easy to cause,
The aerial dust of loss pollutes the environment, main at present to be handled using the methods of landfill, not only contaminated soil, but also
Waste of resource and manpower.And the present invention is then turned waste into wealth, and is used to prepare kaolin, can not only be reduced environmental pollution, and
And production cost can be reduced；Second, the high-value-use that realize circulating fluidized bed combustion coal boiler fly ash prepare kaolin, it is necessary to
According to《Kaolin and its test method》GB/T 14563-2008 reach its chemical composition and physical property requirements, although each row
Industry is not quite identical to the specific requirement of kaolin clay filler, but wherein fineness and Al2O3/SiO2Than there is more specific regulation, because
Do not stop rolling, phase mutual friction when this is turned round using high aluminium ball in calcination activation rotary furnace with it, realize and live to resting on roasting
Change the grinding of rotary furnace bottom cycle fluidized bed burned-coal boiler fly ash, and under 900~1280 DEG C of high temperature of calcination activation,
Al2O3、SiO2Since intermolecular bonding energy declines, spacing increases while completing lattice reconstruct, under high aluminium ball rubbing easily
It obtains fineness and reaches 1000~1200 mesh kaolin finished products, while the component particles that the mutual rubbing of high aluminium ball comes off also are supplemented
Into kaolin finished product, separated impurity is not needed；3rd, the sealing of calcination activation rotary furnace both ends is using mechanical seal side
Case can be reliably completed under hot conditions and seal problem, avoid the discharge of exhaust emission；4th, air classifier inlet design is
Three along the circumferential direction uniformly distributed spiral imports can avoid the distinguished and admirable road short circuit of calcination activation rotary furnace both ends cigarette and guide spiral
The whirlwind wind band to advance along calcination activation rotating cylinder spiral inner wall that blade raises, and since import draught area relatively exports
Greatly, flue gas flow rate reduces under conditions of equal ventilation quantity, also means the particle kinetic energy of carrying and reduces, enough thin so as to sub-elect
The finished particle of degree；5th, by designing the guide wire by refeed line outlet, reduction refeed line exports local gun pressure, from
And reduce the stock column height of standpipe, realize material balance and ensure separative efficiency purpose, make circulating fluidized bed combustion coal boiler with
Calcination activation rotary furnace effectively can be combined and run well；6th, calcination activation rotary furnace is designed in circulating fluidized bed combustion coal
Between the combustion system and heat-exchange system of boiler, the particularly hot-flow flue of calcination activation rotary furnace and circulating fluidized bed combustion coal pot
The cyclone separator connection of stove, the high-temperature flue gas of the air classifier discharge of calcination activation rotary furnace pass through circulating fluidized bed combustion coal successively
The superheater of boiler, economizer, air preheater heat exchange, electric bag dust extractor be simultaneously calcination activation rotary furnace finished product capturing device and
The environment-friendly processing unit of circulating fluidized bed combustion coal boiler waste gas particulate matter.
Description of the drawings
Fig. 1 is the main structure diagram that a kind of recirculating fluidized bed calcination activation of the present invention turns round coproduction stove application method.
Fig. 2 is the A-A cross-section structures signal that a kind of recirculating fluidized bed calcination activation of the present invention turns round coproduction stove application method
Figure.
Fig. 3 is that a kind of B partial enlargement structures of recirculating fluidized bed calcination activation revolution coproduction stove application method of the present invention are shown
It is intended to.
Fig. 4 is the C full-page proof structure diagrams that a kind of recirculating fluidized bed calcination activation of the present invention turns round coproduction stove application method.
Fig. 5 is that a kind of recirculating fluidized bed calcination activation of the present invention turns round the D of coproduction stove application method to structure diagram.
Fig. 6 is that a kind of E partial enlargement structures of recirculating fluidized bed calcination activation revolution coproduction stove application method of the present invention are shown
It is intended to.
Fig. 7 is that a kind of F partial enlargement structures of recirculating fluidized bed calcination activation revolution coproduction stove application method of the present invention are shown
It is intended to.
I-calcination activation, II-circulating fluidized bed combustion coal of rotary furnace boiler III-electricity bag dust extractor
1- distributor 2- drive gear assemblies 3- idler assemblies
4- calcination activation rotary furnace cylinder assembly 5- air classifier 6- auger conveyor 7- injectors
8- cooling jacket 9- spreader 10- locating rack 11- spiral blades
12- transmission system 13- driving gear 14- hot-flow flue 15- mechanical sealing assemblies I
16- encloses gear 17- roller-way component 18- calcination activation rotating cylinders
II 21- roller set 22- pedestals of 19- high aluminium ball stack layers 20- mechanical sealing assemblies
23- cyclone separator 24- burner hearth 25- revert system 26- material returning devices
27- guides room 28- standpipe 29-U type valve 30- refeed line 31- air-vents
32- guide wire 33- negative pressure chamber 34- blowing chamber 35- superheater 36- economizers
37- air preheaters.
Specific embodiment
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, a kind of recirculating fluidized bed calcination activation revolution coproduction stove makes
With method, it is characterized in that：
Step 1, fire coal is after 24 fluidized bed combustion of burner hearth of circulating fluidized bed combustion coal boiler II into cyclone separator 23, whirlwind
The larger high-temperature solid particle that separator 23 separates enters revert system 25, and high-temperature solid particle is in the standpipe of material returning device 26
Stock column is formed in 28, there is U-shaped valve 29 between standpipe 28 and refeed line 30, U-shaped 29 bottom of valve has isobaric air compartment air-supply to ensure height
Warm solid particle fluidizes, and the pressure differential high-temperature solid particle of stock column and gun pressure in standpipe 28 is successive by refeed line 30
It conveys to burner hearth 24 and burns again, guide wire 32 is designed in the port of export of refeed line 30, exporting flue gas by air-vent 31 makes to lead
It is always negative pressure state to draw room 27, exports local gun pressure so as to reduce refeed line 30, falls into the high temperature coal of negative pressure chamber 33
Grain blows to cool down through blowing chamber 34 and fluidizes and discharged through air-vent 31, the recirculating fluidized bed that at the same time cyclone separator 23 is discharged
Coal-burning boiler flying dust is used as by high-temperature flue gas carrying feeding calcination activation rotary furnace II and prepares kaolinic raw material.
Step 2, idler assembly 3 include roller set 21, pedestal 22, bushing two groups of rollers before and after calcination activation rotating cylinder 18
Road component 17, positioning are erected on idler assembly 3, and circle gear 16 is bushed on calcination activation rotating cylinder 18, in drive gear
Under the driving of component 2 calcination activation rotating cylinder 18 is driven to be turned round around own central axis line, drive gear assemblies 2 include driving gear
13 and transmission system 12.
Step 3, calcination activation rotary furnace cylinder assembly 4 include mechanical sealing assembly I 15, circle gear 16, calcination activation and return
Drum body 18, roller-way component 17, high aluminium ball stack layers 19, mechanical sealing assembly II 20, the laying in calcination activation rotating cylinder 18
High aluminium ball stack layers 19, due to wearing and not stopping the reason of supplement, high aluminium ball stack layers 19 form the ball filler that diameter differs,
High aluminium ball does not stop rolling, phase mutual friction when being turned round in calcination activation rotating cylinder 18 with it.
The materials such as directed agents are delivered into injector 7, while high-temperature flue gas by step 4, the auger conveyor 6 of distributor 1
It carries under one's arms after circulating fluidized bed combustion coal boiler fly ash is mixed from hot-flow flue 14 into injector 7 with materials such as directed agents through spreader 9
Guiding jumps on the spiral blade 11 of distributor 1, is acted on along 11 rolling tangential direction of spiral blade and is got rid of to calcination activation by centrifugal force
18 inner wall of rotating cylinder is hindered by wall friction, high aluminium ball stack layers 19, gravity, spiral blade 11 in calcination activation rotating cylinder 18
The effects that lose kinetic energy and rest on bottom, high aluminium ball stack layers 19 suspend therebetween simultaneously mutual rubbing, 900~1280 in stove
Activation is completed at a temperature of DEG C and is ground into the kaolin finished particle of enough fineness.
Step 5,5 inlet design of air classifier are three along the circumferential direction uniformly distributed spiral imports, can avoid calcination activation
The distinguished and admirable road short circuit of 4 both ends cigarette of rotary furnace cylinder assembly and guide that spiral blade 11 raises along 18 inner wall of calcination activation rotating cylinder
The whirlwind wind band being threadingly advanced, the path for the spiral whirlwind wind band that high-temperature flue gas is raised along spiral blade 11, which is advanced, sweeps along fineness to close
Lattice enter air classifier 5, so as to sub-elect the more uniform finished particle of activation degree and fineness.
Step 6, from air classifier 5 discharge high-temperature flue gas successively through superheater 35, economizer 36, air preheater 37 exchange heat after,
Flue-gas temperature is down to 150~160 DEG C, and flue gas carries kaolin finished particle and enters electric bag dust extractor III, in this flue gas and height
Ridge soil finished particle separation, kaolin finished particle are sent to next process through the trapping of electric bag dust extractor III, and tail gas is set through environmental protection
Apply qualified discharge after handling.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and changed.Therefore, the invention is not limited in specific embodiment disclosed and described above, to the present invention's
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, it although is used in this specification
Some specific terms, but these terms are merely for convenience of description, do not limit the present invention in any way.
Claims (1)
1. a kind of recirculating fluidized bed calcination activation turns round coproduction stove application method, it is characterized in that：Step 1, fire coal is ciculation fluidized
Into cyclone separator after the burner hearth fluidized bed combustion of bed coal-burning boiler, the larger high-temperature solid particle that cyclone separator separates
Into revert system, high-temperature solid particle forms stock column in the standpipe of material returning device, there is U-shaped valve between standpipe and refeed line, U-shaped
There is isobaric air compartment air-supply in valve bottom to ensure that high-temperature solid particle fluidizes, and the pressure differential high temperature of stock column and gun pressure in standpipe is consolidated
Body particle is successively burnt again by refeed line to burner hearth conveying, guide wire is designed in the port of export of refeed line, by drawing
Air port export flue gas makes guiding room be always negative pressure state, so as to reduce the local gun pressure in refeed line outlet, falls into negative pressure chamber
High temperature coal particle blows to cool down through blowing chamber and fluidizes and discharged through air-vent, the recycle stream of at the same time cyclone separator discharge
Change bed coal-burning boiler flying dust is used as by high-temperature flue gas carrying feeding calcination activation rotary furnace and prepares kaolinic raw material；Step 2,
Idler assembly includes roller set, pedestal, and bushing two groups of roller-way components before and after calcination activation rotating cylinder, positioning is erected at roller station
On part, circle gear is bushed on calcination activation rotating cylinder, and calcination activation revolving drum is driven under the driving of drive gear assemblies
Body is turned round around own central axis line, and drive gear assemblies include drive gear and transmission system；Step 3, calcination activation revolution furnace tube
Body component includes mechanical sealing assembly I, circle gear, calcination activation rotating cylinder, roller-way component, high aluminium ball stack layers, mechanical seal
Component II lays high aluminium ball stack layers in calcination activation rotating cylinder, due to wearing and not stopping the reason of supplement, high aluminium ball stack layers
The ball filler that differs of diameter is formed, does not stop to roll when high aluminium ball turn round in calcination activation rotating cylinder with it, is mutual
Friction；Step 4, the materials such as directed agents are delivered into injector by the auger conveyor of distributor, while high-temperature flue gas is carried under one's arms and followed
Ring fluid bed coal-burning boiler flying dust enters from hot-flow flue after injector is mixed with materials such as directed agents to be jumped on point through spreader guiding
The spiral blade of cloth device is acted on along spiral blade rolling tangential direction by centrifugal force and got rid of to calcination activation rotating cylinder inner wall, by
The effects that wall friction, high aluminium ball stack layers, gravity, spiral blade hinder in calcination activation rotating cylinder loses kinetic energy and rests on bottom
Portion, high aluminium ball stack layers suspend simultaneously mutual rubbing therebetween, complete activation at a temperature of 900~1280 DEG C in stove and are ground into
The kaolin finished particle of enough fineness；Step 5, air classifier inlet design are three along the circumferential direction uniformly distributed spiral imports,
Can avoid the distinguished and admirable road short circuit of calcination activation rotary furnace cylinder assembly both ends cigarette and guide that spiral blade raises along calcination activation
The whirlwind wind band that rotating cylinder spiral inner wall advances, the path for the spiral whirlwind wind band that high-temperature flue gas is raised along spiral blade are advanced
Sweep along fineness qualified into air classifier, so as to sub-elect the more uniform finished particle of activation degree and fineness；Step 6, from wind
Select device discharge high-temperature flue gas successively through superheater, economizer, air preheater heat exchange after, flue-gas temperature is down to 150~160 DEG C, cigarette
Gas carries kaolin finished particle and enters electric bag dust extractor, is separated in this flue gas with kaolin finished particle, kaolin finished product
Particle is sent to next process, tail gas qualified discharge after environmental protection facility is handled through the trapping of electric bag dust extractor.
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| CN201711451627.9A CN108117383B (en) | 2017-12-27 | 2017-12-27 | Use method of rotary co-production furnace for roasting and activating circulating fluidized bed |
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| CN201711451627.9A CN108117383B (en) | 2017-12-27 | 2017-12-27 | Use method of rotary co-production furnace for roasting and activating circulating fluidized bed |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2395146Y (en) * | 1999-09-20 | 2000-09-06 | 李爱民 | Rotary kiln-fluidised bed combined solid waste pyrolysis apparatus |
| CN101113816A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院工程热物理研究所 | Biomass circulating fluid bed burning method and biomass circulating fluid bed boiler |
| CN102925219A (en) * | 2012-11-07 | 2013-02-13 | 东南大学 | Device for resource utilization of circulating fluidized bed coal-gasified discharged ash and use method |
| CN103811092A (en) * | 2014-01-15 | 2014-05-21 | 南京大学 | Method for solidifying radionuclide 133Cs+ through circulating fluidized bed combustion furnace flying ash at normal temperature |
| CN105485671A (en) * | 2016-01-20 | 2016-04-13 | 枣庄矿业（集团）有限责任公司蒋庄煤矿 | Hood strengthening device of circulating fluidized bed |
-
2017
- 2017-12-27 CN CN201711451627.9A patent/CN108117383B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2395146Y (en) * | 1999-09-20 | 2000-09-06 | 李爱民 | Rotary kiln-fluidised bed combined solid waste pyrolysis apparatus |
| CN101113816A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院工程热物理研究所 | Biomass circulating fluid bed burning method and biomass circulating fluid bed boiler |
| CN102925219A (en) * | 2012-11-07 | 2013-02-13 | 东南大学 | Device for resource utilization of circulating fluidized bed coal-gasified discharged ash and use method |
| CN103811092A (en) * | 2014-01-15 | 2014-05-21 | 南京大学 | Method for solidifying radionuclide 133Cs+ through circulating fluidized bed combustion furnace flying ash at normal temperature |
| CN105485671A (en) * | 2016-01-20 | 2016-04-13 | 枣庄矿业（集团）有限责任公司蒋庄煤矿 | Hood strengthening device of circulating fluidized bed |
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| CN108117383B (en) | 2020-06-16 |
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Effective date of registration: 20200520 Address after: No. 19, Shandong high tech Zone, min Tai Road, Zibo, Shandong Applicant after: SHANDONG JIATENG INDUSTRIAL Co.,Ltd. Address before: 362000 the 6 floor of 36 New Gate Street and 1916 Creative Industrial Park, Licheng District, Quanzhou, Fujian, China, 1916 Applicant before: Yang Song |
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