CN101028926A - Process for producing super-fine high-purity white carbon from rice hull and burning heat - Google Patents
Process for producing super-fine high-purity white carbon from rice hull and burning heat Download PDFInfo
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- CN101028926A CN101028926A CN 200610057983 CN200610057983A CN101028926A CN 101028926 A CN101028926 A CN 101028926A CN 200610057983 CN200610057983 CN 200610057983 CN 200610057983 A CN200610057983 A CN 200610057983A CN 101028926 A CN101028926 A CN 101028926A
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Abstract
A process for preparing high-purity superfine white carbon black from rice husk by the heat generated by burning the rice husk includes such steps as charring, acid treating, pulverizing, sieving, burning in a serial combustion system to obtain white carbon black and waste acid, and treating the waste acid for reuse.
Description
Technical field
The present invention relates to a kind of technology of producing ultra-fine high-purity white carbon black with the rice husk and the combustion heat thereof, rice husk is a kind of bioenergy, its superior calorific value between 13300～～14963KJ/Kg. rice husk composed as follows:
| Component content | Organic % 69.1～77.6 | Inanimate matter % 12～18 | Moisture % 9～13 | |
| Constituent content | C H O N S 33～38 4.0～4.7 30～35 0.15～0.47 0.03～0.23 | SiO 2 91.3 | (K, Ca, Mg, Fe, Al) oxide compound 8.7 | - |
The calorific value of rice husk, volatile matter, ash content and moisture data are close with the steam coal index, press the heating value of coal grade standard, think rice husk be a kind of in the low-sulfur solid fuel of (ML) low in calories.Because the volume density of rice husk is very little, is about 128Kg/m
3So storage and transportation be difficulty.Disperse the rice husk of stacking to pollute the environment in the rural area, the flying dust after the burning is very harmful to people and animals' respiratory system.Therefore, the concentrated combustion rice husk not only can make full use of its heat energy, and can obtain the SiO of different grades
2Powder, promptly white carbon black also helps to improve environment.
The combustion heat of rice husk can directly utilize, and also can be converted into electric energy; SiO
2Powder (white carbon black) can be done lagging material according to the grade difference, high temperature filter plate and industrial chemicals.
Background technology
Existing technology is with rice husk directly burning in various roasting kilns, as grate furnace (stoker), Dutch stove, vapourizing furnace and fluid bed furnace.Above-mentioned combustion technology has three common drawback: (1) SiO
2Particle is long in the combustion zone residence time, amorphousness SiO
2Change a large amount of crystal SiO into
2, as quartz, cristobalite and tridymite, its powder flies upward and can cause silicosis; (2) efficiency of combustion is low, at SiO
2Nearly more than 10%, product colour is grey black and grey to residual unburnt charcoal in the particle.(3) SiO
2Particle is to body of heater corrosion and fouling, and influence is produced.
A United States Patent (USP) that improves above-mentioned technology, after rice husk pulverized in impactor, with warm air rice husk in small, broken bits is sent in slag tap combustion device and the roasting kiln and to be burnt, the hot flue gas that produces enters and the placed in-line boiler of roasting kiln, carry out heat exchange with softening water and produce steam, be converted into electric energy through steam turbine.This combustion technology can make most of SiO
2Powder is in time discharged from burner, has shortened the residence time greatly and to the corrosion of roasting kiln.The outward appearance gray of final product, SiO
2Content 90.0%, residual charcoal 4-6%, free crystal SiO
2Content＜1%, volume density are 232Kg/m
3Thus obtained product does not still reach the white carbon black quality that chemical precipitation method obtains.
Purpose of the present invention is just in order to overcome the shortcoming and defect of above-mentioned prior art, and a kind of product purity＞99% that can obtain is provided, the technology of efficiency of combustion 99.5% and the combustion unit that has further improved.
Summary of the invention
The objective of the invention is to be achieved through the following technical solutions:
Rice husk removes dust and foreign material through selection by winnowing, should carry out charing then by washing and dry to unclean especially rice husk, obtains rice hull carbon and combustion gas.Rice hull carbon is boiled through peracid again, removes impurity element; The combustion gas recycle.Rice hull carbon after acid is boiled is through depickling and drying, again through pulverizing and air classification.Its thick heavy particle carries out ultra-fine mill again, makes to contain charcoal SiO
2Ultrafine powder; By the fine size that classification obtains, the little product of proportion is for containing SiO
2Powdered carbon.Above-mentioned two kinds of materials flow to firing system in the following manner.The hot combustion gas that produces with charing will contain SiO
2Powdered carbon is sent to and is done fuel; To contain charcoal SiO with warm air from airheater
2Ultrafine powder is sent to and is taken off charcoal.Combustion-supporting with the warm air oxygen supply in addition.Because rapid combustion can obtain high pure and ultra-fine amorphousness SiO
2, be white carbon black; Rice husk incendiary heat makes full use of and generates electricity; Spent acid is through recycling utilization.
This technology is characterised in that the rice husk with cleaning carries out drying, charing and calcining in charring furnace.Drying temperature is between 200～280 ℃; Carbonization temperature is between 300～450 ℃, and calcining temperature should be less than 570 ℃, and optimum temps is 500～550 ℃, can prevent amorphousness SiO
2Change crystal into, cristobalite and tridymite.Charring furnace goes out three kinds of products: water-gas is discharged by furnace roof, about 200 ℃ of temperature, and recycle is returned combustion-supporting by the charring layer bottom.Water-gas also can condensation, obtains low-boiling point liquid and does industrial chemicals.Combustion gas is drawn by calcining section top, and about 500 ℃ of temperature is sent to heating and contained SiO
2Powdered carbon also is delivered to eddy flow deslagging burner with it, as fuel combustion; Rice hull carbon is discharged by furnace bottom, sends to acid treatment with encloses container.
Acid treatment be with rice hull carbon at 6N hydrochloric acid, 110～150 ℃ of temperature, the best is 120 ℃, uses hot gases agitate, boils 15～30min, with suction filter rice hull carbon is boiled in acid then and moves on the vibratory screening apparatus, reusable heat water flushing rice hull carbon depickling behind the concentrated acid is sloughed in vibration; The concentrated acid that suction filter and vibratory screening apparatus leading portion are deviate from is sent to the acid recovery system.Wash diluted acid water under the sieve that obtains by the vibratory screening apparatus back segment, tell clear liquor through settling tank, sediment is delivered to pressure filter.Filter and the rice hull carbon on the vibratory screening apparatus sieve are delivered to the drying tower drying; Clear liquor and filtrate are delivered to the dense operation of diluted acid and are improved concentration.
The acid recovery system comprises the dense system of acid fog absorption tower and diluted acid, and its function is the autoprecipitation in future, and the diluted acid of press filtration operation and acid fog absorption tower is increased to more than the 6N, delivers to the film dialysis then and sprays the roasting operation, removes metal oxide.This system can make the acid regeneration more than 99%, recycle, and while output metal oxide is as Fe
2O
3Deng, as byproduct.
Rice hull carbon is after peracid boils, and impurity content is reduced to below 1%, has also destroyed charcoal and SiO
2Associative key; Rice hull carbon after the depickling stops 7-9h approximately in drying tower.200～300 ℃ of hot air temperature, the best are 250 ℃, under 1000～2000Pa suction function, are entered by cat head, with the moisture of temperature＜100 ℃, by extracting out at the bottom of the tower, enter atmosphere after acid absorption column purifies.
Rice hull carbon is pulverized and the air classification of cyclone dust collector group through impactor after the exsiccant acid, obtains two strands of materials: a kind of proportion and granularity are bigger contains charcoal SiO
2Powder and a kind of granularity are less, and proportion is lighter contains SiO
2Powdered carbon.Preceding a kind of material further is crushed to median size 3～5um through ultra-fine mill again.Above-mentioned two kinds of materials are binning respectively, all is provided with discharge with endless screw machine and weighing balance under the storehouse.The material in two storehouses is delivered to firing system by warm air and hot combustion gas respectively in the expectation ratio.
By gas blower air is blown into the airheater that is located at the roasting kiln top and heats, consequent hot blast is divided into 2 tunnel: one road Hot air quilt and sends into the stokehold bellows, for doing 2 air and 3 air; Another road warm air will contain charcoal SiO with the vortex fluidised form
2Ultrafine powder is involved in, and sends into eddy flow deslagging burner with aerosol shape, and material is heated in the stream motion.After this spray into eddy flow deslagging burner internal combustion by nozzle with the whirling current form; Hot combustion gas from charring furnace calcining section will contain SiO
2Powdered carbon is involved in and is delivered to eddy flow deslagging burner as fuel combustion.
Eddy flow deslagging burner is connected with roasting kiln and steam boiler and is constituted a firing system.
Eddy flow deslagging burner has a tubular burning chamber, and front end is provided with 3 concentric tubes, and pipe core and a Y-tube link.Arm contains SiO with carrying
2The hot gas line of powdered carbon communicates; Another arm connects natural gas tube.Two arms all are provided with reverse checkvalve, are used for regulating air demand.When igniting or self combustion heat deficiency, combustion-supporting with Sweet natural gas; The first layer sleeve pipe contains charcoal SiO with carrying
2The transfer lime of ultrafine powder communicates, and the latter's air outlet reduced cross-sectional area is crow and chews shape incision annular nozzle, by the whirling current of its generation and the flame mixed firing of center nozzle ejection; The oxygen supply of second layer telescopic annular nozzle ejection warm air is combustion-supporting, and the tolerance of its ejection is controlled by valve.3 also configurations separately at an angle mutually of air nozzle so that produce swirling motion in tubular burning chamber, realize mixed firing.The end of tubular burner is separated into the passage of two rectangle sectional areas, joins with two deslagging swirler feeding mouths respectively.Swirler is made of cylinder and cone, carries the combustion gas and the flame of solid particulate and do swirling motion in swirler, and under centrifugal action, particle is by separating in the air-flow, and mouth is discharged at the bottom of the cone; Air-flow sprays into roasting kiln by the pipe core of cylinder, burns away at the furnace cavity that has amplified.For supplemental oxygen helps burning, be provided with the 3rd warm air nozzle at deslagging swirler inlet, its jet amount can be according to the burning oxygen requirement by valve regulated.
Gas velocity in the tubular burning chamber is generally between 70～100m/s, and the best is 80m/s.Temperature of combustion is generally 1000～1500 ℃, and the best is 1200 ℃.Therefore, most of SiO
2Particle surface and be embedded in intravital charcoal and can both in eddy flow deslagging burner, burn fast.SiO
2Particle by swirler at the bottom of the discharge with endless screw machine of mouth discharge; The charcoal that does not burn burns away in roasting kiln.Because furnace cavity is big, upflow velocity reduces, SiO
2Particle can fall into furnace bottom slag collecting bin one after another along the furnace wall, is discharged by the discharge with endless screw machine again.Because SiO
2Particle is small, and to the abrasive action reduction of furnace wall, stove prolongs work-ing life.
Hot flue gas rising furnace roof, a part is carried out heat exchange with the airheater that is positioned at furnace roof; Most of hot flue gas then enters the boiler that adjoins and carries out heat exchange, the generation steam with water in the pipe group.The efficiency of combustion of this firing system can reach more than 99%, SiO
2The charcoal of powder and other foreign matter content and free crystal SiO
2Content is all below 1%, about SiO more than 85%
2Powder collects in the slag collector, and rest part will be discharged by each several part collection thereafter.
Steam boiler comprises waterworks and steam power-generating system two portions:
(1) waterworks: water pump pumps into well heater with water, and hot water enters softening agent by economizer and heat exchanger after further heating, and softening water enters the heat exchanger tube group by boiler bottom, with flue gas thermogenesis steam.
(2) steam power-generating system: steam comes together in the steam tube of heat exchanger tube group upper end, after introducing superheater thus and further heating, produces electric power through turbine and generator.The heat of flue gas enters atmosphere through bag dust filter after recycle.
Owing to take technique scheme, compared with the prior art the present invention had the following advantages and effect:
(a) SiO
2With the liberation degree height of charcoal, quality product height, its purity surpasses the product of chemical precipitation method;
(b) efficiency of combustion height, SiO
2In residual carbon content low;
(c) product granularity is thin, amorphousness SiO
2The content height;
(d) rice husk combustion heat utilization ratio height, acid regeneration rate height;
(e) metal oxide that contains of rice husk can by-product sale;
(f) cost is low, has eliminated environmental pollution.
Description of drawings
The technical process of Fig. 1 for producing ultra-fine high-purity white carbon black with the rice husk and the combustion heat thereof
Fig. 2 is positioned at the allocation plan of roasting kiln bottom for eddy flow deslagging burner;
Fig. 3 is positioned at the allocation plan of roasting kiln sidewall for eddy flow deslagging burner
Embodiment further describes the technology of the present invention below in conjunction with accompanying drawing:
Fig. 1 illustrates that rice husk after selection by winnowing operation (1) removes dust, sends into charring furnace (2) with lift.Drainage water coal gas in charring furnace top returns the combustion-supporting or condensation generation low-boiling point liquid of charing section, is industrial chemicals; Calcine the hot combustion gas of section top extraction as containing SiO by charring furnace
2The heating of powdered carbon and delivery air-flow are for eddy flow deslagging burner combustion fuel; Rice hull carbon enters encloses container by the charring furnace bottom, transports the rice hull carbon of acid treatment operation (3) after peracid boils to, and foreign matter content＜1% is moved to vibratory screening apparatus (4) depickling with acid solution by suction filter, uses the hot water injection then.The acid solution that acid solution that is leached by suction filter and vibratory screening apparatus leading portion remove is sent to together sprays roasting operation (18) and handles; Diluted acid is sent to settling tank (5) its solid precipitation such as charcoal end of carrying under one's arms is got off under the sieve of vibratory screening apparatus back segment, and throw out is sent to pressure filter (6), and filter and the rice hull carbon on the vibratory screening apparatus sieve are delivered to drying tower (7); The clear liquor of settling tank and the filtrate of pressure filter are all diluted acid, are sent to film dialysis operation (17) again, the acid recovery utilization of separating out with passing through from the diluted acid of acid fog absorption tower (15) after the dense operation of diluted acid (16) improves concentration; It oozes and stays liquid to deliver to operation (18) to remove impurity element.Spray roasting operation (18) and make spent acid, change the impurity element that wherein contains into purity high oxide compound, as Fe through hydrolysis reaction
2O
3In byproduct.Acid regeneration up to 99.5% is recycled.The acid mist that above-mentioned each operation produces is all come together in acid fog absorption tower (15), and purified gas enters atmosphere.
Dried rice hull carbon is divided into two strands of materials through impactor (8) pulverizing and air classification (9): one coarse size, the heavy charcoal SiO that contains
2Powder and one fine size, proportion is lighter contains SiO
2Powdered carbon.The former is sent to ultra-fine mill (10) and further pulverizes, and makes to contain charcoal SiO
2Ultrafine powder.Above-mentioned two kinds of materials respectively binning Fig. 2 1. and 2., the storehouse has discharge with endless screw machine and weighing balance.Contain SiO
2Powdered carbon is a carrier with hot combustion gas; Contain charcoal SiO
2The warm air of auto-combustion furnace roof portion airheater (11) is a carrier since the ultrafine powder.Two kinds of materials are all discharged by preset blending ratio, are heated in air motion, send into the burning of eddy flow deslagging with aerosol shape and burn device (12) and roasting kiln (13) burning.
Eddy flow deslagging burner (12) and roasting kiln (13) and boiler (14) constitute a series connection combustion system.It is that eddy flow deslagging burner configuration is in the roasting kiln bottom that the binding of eddy flow deslagging burner (12) and roasting kiln (13) has two allocation plan: Fig. 2; Fig. 3 is positioned at the roasting kiln sidewall for eddy flow deslagging burner.
Eddy flow deslagging burner (12) has a tubular burning chamber (12) a, and its front end is provided with 3 gas ejector pipes: 3. pipe core is gas line, and its inlet end is connected with one 3 siphunculus.4. one of them arm contains SiO with delivery
2The hot gas line of powdered carbon communicates; 5. another arm communicates with natural gas tube.Two arms all are provided with reverse checkvalve, the control air input.Other 2 gas ejector pipes: 1 with delivery contain charcoal SiO
26. the warm-air pipe of ultrafine powder communicates; In addition 1 with 8. communicate from bellows warm-air pipe 7..All be provided with control valve.Three gas ejector pipes have two allocation plans at the burning chamber front end: Fig. 2 scheme (A) is that 3 gas ejector pipes are formed a concentric(al) circles sleeve pipe, pipe core burner oil; Delivery contains charcoal SiO
2The warm air of ultrafine powder enters the 1st layer of sleeve pipe along tangent line, sprays with whirling current; The warm air of supplying with oxygen is sprayed by the 2nd layer of sleeve pipe; Fig. 3 scheme (B) is the configurations at an angle mutually of 3 gas ejector pipes, so that produce eddy flow in burning chamber (12) a, promotes mixed firing.The end of burning chamber (12) a is divided into the passage of two rectangle sectional areas, and the inlet mouth with two deslagging swirlers (12) b communicates respectively., under centrifugal action, discharge with the particle that flows to swirler by end mouth; 10. hot combustion gas and flame spray into roasting kiln by the pipe core at swirler top and burn away.SiO after the combustion
2Particle falls into furnace bottom slag collecting bin; The hot flue gas that rises carries out heat exchange with the airheater (11) of furnace roof, and the water that major part enters the boiler (14) that adjoins and Guan Zuzhong carries out heat exchange manufacturing steam.For 9. combustion-supporting air intake at the deslagging swirler is provided with the warm air nozzle.
Water pump (23) pumps into well heater (22) with water, and through economizer (21), heat exchanger (20) and water softening apparatus (19) are sent into pipe group in the boiler to softening water.The steam that boiler produces after superheater (24) heats, is electric power by turbine (25) and generator (26) with thermal transition.The heat that is produced by firing system rationally utilizes according to the demand of each position to heat.Flue gas enters atmosphere, the sedimentary SiO of each after bag dust filter purifies
2Powder reclaims respectively.
Embodiment
According to the main body operation of Fig. 1 technical process, will take from the rice husk of Beijing rice milling factory, after the washing oven dry, carry out charing and calcining 1h 550 ℃ of temperature, get rid of 80% volatile matter gas (not reclaiming); Rice hull carbon is boiled 15min with 6N hydrochloric acid with 120 ℃.Depickling on vibratory screening apparatus, and neutral with the hot water injection to the pH value, broken after the oven dry through the vibration at high speed abrasive dust, make ultrafine powder.Be blown into electric tube furnace with air,, make the material burning that is in suspended state, obtain SiO 1000 ℃ of temperature
2The pure white product of content 99.37%.
Claims (10)
1. produce the technology of ultra-fine high-purity white carbon black with the rice husk and the combustion heat thereof, it is characterized in that rice husk removes impurity element through charing and acid treatment after, pulverize and sorting, obtain containing charcoal SiO
2Powder and contain SiO
2Powdered carbon.Contain charcoal SiO
2Powder passes through ultra-fine mill again, makes to contain charcoal SiO
2Ultrafine powder.Then,, deliver to the firing system that eddy flow slag tap combustion device and roasting kiln and steam boiler constitute, burn fully fast with aerosol shape respectively by from the hot combustion gas of charring furnace calcining section with from the warm air of roasting kiln top airheater.Efficiency of combustion reaches more than 99%, the SiO of the finished product white carbon black
2Content＞99%, carbon content＜1%, particle diameter 5 μ m.Spent acid that produces in the production process and acid mist all pass through the acid recovery system handles, make the acid regeneration more than 99%, recycle; The rice husk combustion heat obtains abundant profit, and the hot flue gas of being discharged by roasting kiln carries out heat exchange generation steam with the softening water that pumps in steam boiler, deliver to the turbine generating after heating through superheater again.The flow process of this technological process is seen Fig. 1.
2. production technique according to claim 1 is characterized in that the rice husk of cleaning is carried out charing and calcining in charring furnace.Carbonization process is divided into drying, charing and calcining three phases.The temperature of dryer section is between 200～280 ℃, and charing section temperature is between 300～450 ℃; Calcining section temperature should be less than 570 ℃, and optimum temps is 500～550 ℃.This temperature can prevent amorphousness SiO
2Change crystal into, cristobalite and tridymite.Three kinds of products of charring furnace output: water-gas is discharged by furnace roof, and temperature is about 250 ℃, and by charring furnace middle part returning, for the charing section combustion-supporting.Water-gas also can obtain low-boiling point liquid as industrial chemicals through condensation; Hot combustion gas is discharged by the calcining section top of stove, and temperature is about 500 ℃, can be as containing SiO
2The preheating of powdered carbon and delivery combustion gas; Rice hull carbon is discharged by furnace bottom, generally still contains 20% the volatile matter of having an appointment.With the encloses container shipment, send to acid treatment.
3. production technique according to claim 1 is characterized in that rice hull carbon is passed through 6N hydrochloric acid with 110～150 ℃ of temperature, and the best is 120 ℃, stirs with hot gas, boils 15～30min, and the best is 20min.This technology can be with SiO
2Impurity content drop to below 1%, also help charcoal and SiO
2Dissociate.After acid is boiled and finished, rice hull carbon and acid solution are moved on the vibratory screening apparatus further depickling with suction filter.
4. according to claim 1 described production technique, it is characterized in that removing concentrated acid with the leading portion of vibratory screening apparatus; In the remaining acid solution that the vibratory screening apparatus back segment carries with hot water injection's rice hull carbon, its sieve diluted acid down contains broken charcoal, after the flocculation deposition, carries out press filtration.Filter and the rice hull carbon on vibratory screening apparatus are delivered to drying tower and are carried out drying.
5. production technique according to claim 1 is characterized in that filtrate acid solution under the sieve of vibratory screening apparatus leading portion of suction filter is delivered to injection roasting operation, removes the metal oxide in the acid, as the byproduct output; Regenerated acid recycle.The clear liquor that is overflowed by settling tank and the filtrate of pressure filter are sent into the dense operation of diluted acid and are put forward highly acid concentration, purify through the film dialysis again.Sour recycle after the purification; The spent acid that contains impurity is delivered to and is sprayed the roasting operation and further remove impurity.The acid mist that all acid treatment operations produce is inhaled into acid fog absorption tower and handles, and Purge gas enters atmosphere; Diluted acid is delivered to the dense operation of diluted acid and is improved concentration, recycle.Native system can make the acid regeneration more than 99%.
6. production technique according to claim 1 is characterized in that dried rice hull carbon sent into that impactor is pulverized and carry out air classification in the swirler group.Obtain two strands of materials thus: a kind of granularity is thicker, and proportion is bigger contains charcoal SiO
2Powder and a kind of granularity are thinner, and proportion is less contains SiO
2Powdered carbon.Preceding a kind of material is further pulverized through ultra-fine mill again, makes to contain charcoal SiO
2Ultrafine powder, granularity＜5 μ m.Above-mentioned two kinds of materials are binning respectively, and the bottom in storehouse is respectively equipped with discharge with endless screw machine and weighing balance.The withdrawal rate in two storehouses can enter in separately the delivery hot gas flow by predetermined proportion.
7. production technique according to claim 1, it is characterized in that firing system be one by eddy flow slag tap combustion device, the combustion system that three units in series of roasting kiln and steam boiler constitute.
8. according to claim 1,7 described production technique is characterized in that eddy flow slag tap combustion device is the combination of a tubular burning chamber and 2 deslagging swirlers.The front end of tubular burning chamber is provided with 3 concentrically ringed air inlet sleeve pipes; Pipe core and 1 Y-tube link, and 2 arms of the latter contain SiO with gas pipeline and conveying respectively
2The hot gas line of powdered carbon is communicated with.The two all is provided with reverse checkvalve.Burner when igniting, or during self short bunker, it is combustion-supporting to start natural gas; During normal running, close the Sweet natural gas reverse checkvalve, open delivery and contain SiO
2The hot combustion gas reverse checkvalve of powdered carbon makes it to be sprayed by the center nozzle as fuel, produces main flame; Delivery contains charcoal SiO
2The warm air of ultrafine powder is sprayed by the 1st layer of sleeve pipe with whirling current, with main flame mixed firing; Warm air from bellows is sprayed by the 2nd layer of sleeve pipe, and oxygen supply is combustion-supporting.Above-mentioned 3 nozzles also can be mutually at an angle, configuration separately.
Tubular burning chamber rear end is divided into two sectional area oblong channels, and the air intake with two deslagging swirlers communicates respectively.Be provided with the 3rd warm air nozzle in the ingress, with the valve regulation air demand.This swirler is made of cylinder and cone.The cylinder center of top is provided with gas ejector pipe, and the flame and the combustion gas that are swirling motion spray into roasting kiln thus, burn away; Mouth is a slag-drip opening at the bottom of the cone, communicates with the discharge with endless screw machine.
The jet velocity of air-flow in tubular burning chamber is generally 70～100m/s, and the best is 80m/s, and temperature of combustion is 1000～1500 ℃, 1200 ℃ of optimum tempss.
9. according to claim 1,7 described production technique, it is characterized in that the binding of eddy flow deslagging burner and roasting kiln has 2 schemes: Fig. 2 scheme is that burner is located at the roasting kiln below; Fig. 3 scheme is that burner is located at the roasting kiln sidewall.
10. according to claim 1,7 described production technique, it is characterized in that airheater is located at the ceiling below in the roasting kiln.The sealing screw slag off apparatus is all adopted in all slag storehouses of firing system.
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Family Cites Families (2)
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| CN1123807A (en) * | 1994-12-01 | 1996-06-05 | 赵志祥 | Method for producing white carbon black from husk of rice |
| CN1039898C (en) * | 1995-03-28 | 1998-09-23 | 吴国华 | Production process for extracting silicon dioxide |
-
2006
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| CN101638235B (en) * | 2008-07-30 | 2011-12-07 | 福又达生物科技股份有限公司 | Method for preparing siliceous product from plants |
| CN103256590A (en) * | 2013-05-20 | 2013-08-21 | 北京科技大学 | Method and device for multi-grade mixed combustion of double fuels at cyclone state |
| CN103256590B (en) * | 2013-05-20 | 2015-07-15 | 北京科技大学 | Method and device for multi-grade mixed combustion of double fuels at cyclone state |
| CN105600790A (en) * | 2014-09-16 | 2016-05-25 | 王开辉 | Method for co-producing ultra-pure nano-silica and biological oil by using rice husk |
| CN105883816A (en) * | 2014-09-16 | 2016-08-24 | 王开辉 | Device for producing nanometer silicon dioxide through rice husk deep oxidation |
| CN105883816B (en) * | 2014-09-16 | 2018-10-09 | 王开辉 | A kind of device producing nano silicon dioxide using rice husk deep oxidation |
| CN106220996B (en) * | 2016-07-28 | 2018-11-27 | 吉林大学 | Silicon carbon black/composite polyolefine material preparation method |
| CN106220996A (en) * | 2016-07-28 | 2016-12-14 | 吉林大学 | The preparation method of silicon white carbon black/composite polyolefine material |
| CN106635087A (en) * | 2016-12-07 | 2017-05-10 | 广西北海浩邦新能源科技有限公司 | Biomass carbonization pretreatment process |
| CN106675598A (en) * | 2016-12-07 | 2017-05-17 | 广西北海浩邦新能源科技有限公司 | Dry distillation method |
| CN106829970A (en) * | 2017-03-31 | 2017-06-13 | 章斐虹 | A kind of method that rice husk prepares biomass nano silica |
| CN109456801A (en) * | 2018-11-06 | 2019-03-12 | 吉林大学 | The method of biomass hydrogen-rich high-energy fuel gas coproduction nanometer silicon dioxide composite material |
| CN111690421A (en) * | 2019-03-15 | 2020-09-22 | 招远市汇潮新能源科技有限公司 | Material heat treatment method and system |
| WO2020186621A1 (en) * | 2019-03-15 | 2020-09-24 | 招远市汇潮新能源科技有限公司 | Heat treatment method and system for materials |
| CN110395737A (en) * | 2019-08-21 | 2019-11-01 | 华东理工大学 | A kind of method of modifying of precipitated silica |
| CN116022797A (en) * | 2022-12-05 | 2023-04-28 | 嘉禾聚能(北京)科技有限公司 | Method and system for preparing white carbon black by using rice hulls |
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