CN205856557U - A kind of for carbonaceous material circulation calciner - Google Patents
A kind of for carbonaceous material circulation calciner Download PDFInfo
- Publication number
- CN205856557U CN205856557U CN201620732723.5U CN201620732723U CN205856557U CN 205856557 U CN205856557 U CN 205856557U CN 201620732723 U CN201620732723 U CN 201620732723U CN 205856557 U CN205856557 U CN 205856557U
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- Prior art keywords
- fine powder
- fluidized bed
- calciner
- roasting
- roaster
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The utility model discloses a kind of for carbonaceous material circulation calciner.Including circulating fluidized bed roasting furnace, fine powder roaster, heat exchanger, pulverized-coal collector and dust removing device, described circulating fluidized bed roasting furnace includes riser, cyclone separator, material returning device；The outlet of the cyclone separator of described circulating fluidized bed roasting furnace connects with fine powder roaster, and the outlet of described fine powder roaster is connected with dust removing device.The recirculating fluidized bed calciner that this utility model uses, by the interpolation of recycle stock, improves the roasting efficiency of carbonaceous material, improves efficiency of energy utilization；Reduce the carbon content in low carbon materials, carbon content ＜ 1% so that it is can be further with in material engineering；Compared to traditional material processing method, it is possible to utilize the calorific value of low carbon materials itself, greatly reduce energy consumption.
Description
Technical field
This utility model belongs to carbonaceous material roasting technology field, particularly relates to a kind of for carbonaceous material circulation roasting
Device.
Background technology
Existing roasting technology purpose is that material (such as Ore) heats and do not makes fusing, to change its chemical composition or physics
Character.
Carbonaceous material can occur green roasting due to various factors in roasting process, causes in product of roasting the most residual
There is combustible.When there is green roasting, owing to failing to be removed completely by the carbon in carbonaceous material, not only cause material
Quality reduces, and causes the waste of fuel, simultaneously because the progressive product of roasting of prior art can be applied to material engineering
Field.The utilization of such as rice hull ash, the ash in rice husk is mainly made up of unbodied silicon dioxide, is removed by low-temperature bake
Carbon, it is possible to obtain high-quality white white carbon black, is expensive nanometer materials, of many uses.If but using high-temp combustion
Mode carries out the roasting of rice husk, can be melted by the amorphous silica in rice husk, it is impossible to utilize as nanometer materials.And it is existing
Some calciners, as simple recirculating fluidized bed low-temperature bake can only be difficult by the carbon content roasting in carbonaceous material to 5-10%
To meet the requirement of material engineering field application.It is to use the high-energy equipments such as electric furnace, crucible, rotary kiln now with practices well
Through long-time slowly roasting, the carbon residue in ash is reacted further.
Therefore, this utility model provide the device of roasting that a kind of high-effect, scale runs reduce in ashes can
Combustion content of material.
Utility model content
The purpose of this utility model is that providing a kind of circulates calciner for carbonaceous material, by the low-carbon (LC) of big granularity
Material is by circulation repeatedly in system, until isolating system after becoming the micropowder of small grain size.By increasing carbonaceous material
The number of times of circulation in system, extends the roasting time that oxygen atom permeates in the feed, reacts, improves roasting efficiency, solves
The wasting of resources in existing roasting, the problem that noncombustible matter content in ashes is high.
For solving above-mentioned technical problem, this utility model is achieved through the following technical solutions, including:
A kind of circulate calciner for carbonaceous material, including circulating fluidized bed roasting furnace, fine powder roaster, heat exchanger,
Pulverized-coal collector and dust removing device, described circulating fluidized bed roasting furnace includes riser, cyclone separator, material returning device；Described
The outlet of the cyclone separator of circulating fluidized bed roasting furnace connects with fine powder roaster, the outlet of described fine powder roaster and micropowder
Separator connects；
Wherein, described riser is provided with raw materials mouth, bed charge door, recycle stock charge door；
Wherein, the import of described fine powder roaster is connected with recycle stock charge door.
Further, the side of described heat exchanger is connected with fine powder roaster；The opposite side fine powder of described heat exchanger separates
Device connects.
Further, the bottom of described riser is additionally provided with the entrance of material returning device；Described riser emulsion zone is provided with and does not contains
Ash auxiliary fuel adds entrance, is connected with aerator bottom described riser.
Further, the charge door bottom of described circulating fluidized bed roasting furnace is fixed with air-distribution device.
Further, described fine powder roaster uses adiabatic form, and described fine powder roaster is provided with and controls the auxiliary of temperature
Help roasting device.
A kind of method of roasting for carbonaceous material circulation calciner, comprises the steps:
Step one, carbonaceous material is separately added into recirculating fluidized bed by bed charge door is roasted by raw materials mouth, bed
Burning in stove, enter emulsion zone without ash auxiliary fuel by auxiliary fuel charge door, air is sent into by aerator, and carbonaceous material is empty
Become powdery low carbon materials with after gas generation roasting, be carried along into cyclone separator by flue gas；
Step 2, low carbon materials coarse powder is collected into material returning device, fine powder and micropowder at cyclone separator and is carried by flue gas
Entering fine powder roaster, the low carbon materials coarse powder in material returning device is sent back to riser and continues roasting；
Step 3, the low carbon materials fine powder of cyclone separator top effusion and the air of micropowder and excess are at fine powder roaster
Interior continuation roasting, and control temperature by auxiliary roasting device；
Roasting complete after low carbon materials fine powder and micropowder and flue gas lower the temperature through heat exchanger；
Separated by pulverized-coal collector, collect low carbon materials fine powder, and low carbon materials fine powder is delivered to recycle stock adds
Material mouth, continues roasting in adding circulating fluidized bed roasting furnace, and low carbon materials micropowder separates through dust removing device, collects, by flue gas
Discharge.
Further, described carbonaceous material particle diameter≤20cm.
Further, the bed that described circulating fluidized bed roasting furnace adds is wear-resisting thick bed granule, including quartz sand, river
Sand and/or alumina balls, particle diameter is 0.5～5mm.
Further, in described circulating fluidized bed roasting furnace, excess air factor is 0.9～3, sintering temperature ＞ 450 DEG C.
This utility model has the advantages that
1, the recirculating fluidized bed calciner that this utility model uses, equipment is reliable, it is easy to controlling, operating environment is big
For taking on a new look, facilitating implementation mechanization continuous prodution, alleviate labor strength, raise labour productivity.
2, the recirculating fluidized bed calciner that this utility model uses, by the interpolation of recycle stock, improves carbon containing material
The roasting efficiency of material, improves efficiency of energy utilization.
3, this utility model use recirculating fluidized bed calciner and roasting technique, the carbon reduced in low carbon materials contains
Amount, carbon content ＜ 1% so that it is can be further with in material engineering.
4, this utility model use recirculating fluidized bed calciner and roasting technique, compared to traditional material process side
Method, it is possible to utilize the calorific value of low carbon materials itself, greatly reduce energy consumption.
Certainly, implement arbitrary product of the present utility model to it is not absolutely required to reach all the above advantage simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, embodiment will be described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only embodiments more of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Other accompanying drawing.
Fig. 1 is a kind of schematic diagram for carbonaceous material circulation calciner of the present utility model；
In accompanying drawing, the list of parts representated by each label is as follows:
1-circulating fluidized bed roasting furnace；101-riser；102-cyclone separator；103-auxiliary fuel adds entrance；104-
Raw materials mouth；105-bed charge door；106-air-distribution device；107-recycle stock charge door；108-aerator；109-returning charge
Device；2-fine powder roaster；201-assists roasting device；3-heat exchanger；4-pulverized-coal collector；5-dust removing device.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The all other embodiments obtained, broadly fall into the scope of this utility model protection.
The Industrial Analysis of carbonaceous material is mainly made up of ash, moisture, volatile matter, fixed carbon, complete roasting be by moisture,
Volatile, fixed carbon is fully converted to carbon dioxide, the process of a residual ash.And due to each side reason, roast completely
Burn through Chang Wufa realizes, and in product of roasting, ash disposal the most also remains combustible component such as: volatile matter, fixed carbon.This practicality is new
Type uses circulating fluidized bed roasting furnace, and the roasting for solid, gas provides a stable temperature field reacted.Carbonaceous material leads to
Cross and carry out roasting in circulating fluidized bed roasting furnace, fine powder roaster；Bigger grain is trapped by cyclone separator, pulverized-coal collector
The low carbon materials in footpath so that it is return to circulating fluidized bed roasting furnace, fine powder roaster and again carry out roasting.The low-carbon (LC) of big granularity
Material is by circulation repeatedly in system, until isolating system after becoming the micropowder of small grain size.By increasing carbonaceous material
The number of times of circulation in system, extends the roasting time that oxygen atom permeates in the feed, reacts, improves roasting efficiency；Simultaneously
Owing to grain size of micropowder is little, specific surface area big, oxygen atom is readily permeable to react with carbon atom, so the carbon atom isolated in micropowder
The most completely and oxygen atom there occurs reaction, phosphorus content is extremely low.Including following equipment:
Fine powder roaster: crushed by handled solid, grind to form fine powder, increases the contact area of solid and gas, contracting
Transmission within short granule and reaction distance.Flow through the gas of these powders from bottom to top, when reaching certain speed, can be by solid
Body granule suspends, and is allowed to constantly move, and just as fluid, therefore claims fluidization.Technique is widely used in chemical industry, metallurgy etc.
Field.
Pulverized-coal collector: operation principle is to utilize Gravity Separation, centrifugation, makes the coal dust of variable grain separate.Dust-laden
Air-flow rotates in being introduced tangentially into separator by separator inlet, and solids get rid of to outer tube wall by centrifugal force and transport downwards
Dynamic, bottom dust-exhausting port to discharge, the air-flow after purification is discharged by top vent.
Dust removing device: patent 03812421.1 (for the vertical dust removing device of classifying solid particle material) provides
A kind of different physical properties being had based on granule carries out the function device of granule separation according to granular size.
Riser: in fluidized catalytic cracker, the lifting force by gas medium (air, steam or oil gas) will be urged
Agent is promoted to the pipe used by eminence, is from bottom to top followed successively by pre lift zone, feed zone and cracking reaction district, and outlet typically sets
Put fast separation device.
Material returning device: be the high-temp solid material that boiler separator is separated stable send the combustor that pressure is higher back to
In, and ensure that gas anti-channeling enters the amount of separator for minimum.Classification has: mechanical valve and non-mechanical valve two kinds.
Air-distribution device: fluid bed air-distribution device is mainly made up of air distribution plate, air compartment, cold slag tube；The main work of air-distribution device
With including supporting bed and make air be evenly distributed on the cross section of whole burner hearth, and provide enough dynamic head, make bed
Material fluidizes equably, it is to avoid dead band occurs；Those are grilled thoroughly substantially, fluidity difference, on air distribution plate, deposit again big of tendency
Grain is got rid of in time, it is to avoid fluidize bad.75t/h CFBB sparking mode is hot gas ignition under bed, and this just requires
Cloth wind system is resistant to the temperature of about 800 DEG C, and therefore its air-distribution device is water-cooled air-distribution device.Including: wind-cowl water-cooled cloth wind
Plate and water-cooled equipressure air compartment.
Refer to shown in Fig. 1, a kind of for carbonaceous material circulation calciner, including circulating fluidized bed roasting furnace 1, fine powder
Roaster 2, heat exchanger 3, pulverized-coal collector 4 and dust removing device 5, described circulating fluidized bed roasting furnace 1 include riser 101,
Cyclone separator 102, material returning device 109；The outlet of the cyclone separator 102 of described circulating fluidized bed roasting furnace 1 and fine powder roasting
Stove 2 connects, and the outlet of described fine powder roaster 2 is connected with dust removing device 5.
Wherein, described riser 101 is provided with raw materials mouth 104, bed charge door 105, recycle stock charge door
107。
Wherein, the import of described fine powder roaster 2 is connected with recycle stock charge door 107.
Wherein, the side of heat exchanger 3 is connected with fine powder roaster 2；The opposite side pulverized-coal collector 4 of described heat exchanger 3 is even
Connect.
Wherein, the bottom of riser 101 is additionally provided with the entrance of material returning device 109；Described riser 101 emulsion zone is provided with and does not contains
Ash auxiliary fuel adds entrance, is connected with aerator 108 bottom described riser 101；Purpose is: control sintering temperature.
Wherein, the charge door bottom of circulating fluidized bed roasting furnace 1 is fixed with air-distribution device 106, it is therefore intended that: uniform temperature
?.
Wherein, fine powder roaster 2 uses adiabatic form, and described fine powder roaster 2 is provided with the auxiliary roasting controlling temperature
Device 201, it is therefore intended that: reduce radiation loss, control fine powder calciner temperature.
A kind of method of roasting for carbonaceous material circulation calciner, comprises the steps:
Step one, carbonaceous material is separately added into recycle stream by raw materials mouth 104, bed by bed charge door 105
Changing in bed roaster 1, enter emulsion zone without ash auxiliary fuel by auxiliary fuel charge door, air is sent into by aerator 108,
Carbonaceous material is empty becomes powdery low carbon materials after gas generation roasting, is carried along into cyclone separator 102 by flue gas；
Step 2, low carbon materials coarse powder is collected into material returning device 109, fine powder and micropowder by cigarette at cyclone separator 102
Gas is carried along into fine powder roaster 2, and the low carbon materials coarse powder in material returning device 109 is sent back to riser and continues roasting 101；
Step 3, low carbon materials fine powder and the micropowder of the effusion of cyclone separator 102 top roast at fine powder with excessive air
Continue roasting in burning stove, and control temperature by auxiliary roasting device 201；
Roasting complete after low carbon materials fine powder and micropowder and flue gas lower the temperature through heat exchanger 3；
Separated by pulverized-coal collector 4, collect low carbon materials fine powder, and low carbon materials fine powder is delivered to recycle stock adds
Material mouth 107, continues roasting in adding circulating fluidized bed roasting furnace 1, and low carbon materials micropowder separates through dust removing device 5, collects, will
Fume emission.
Wherein, carbonaceous material particle diameter≤20cm.
Wherein, circulating fluidized bed roasting furnace 1 add bed be wear-resisting thick bed granule, including quartz sand, river sand and/or
Alumina balls, particle diameter is 0.5～5mm.
Wherein, in circulating fluidized bed roasting furnace 1, excess air factor is 0.9～3, sintering temperature ＞ 450 DEG C.
Embodiment 1
Raw material lump coal, particle diameter 20cm；Bed uses alumina balls, particle diameter 5mm；It is separately added into circulating fluidized bed roasting furnace,
Circulating fluidized bed roasting furnace adds without auxiliary fuel, excess air coefficient 3, sintering temperature 1500 DEG C, and auxiliary roasting device cuts out, carefully
Powder calciner temperature 1400 DEG C.Flue gas after heat exchange and fine powder, micropowder temperature 140 DEG C, pulverized-coal collector isolated fine powder quilt
Foldback returns in circulating fluidized bed roasting furnace, the micropowder carbon content about 0.6% that dust removing device separates and collects.
Embodiment 2
Raw rice husk, particle diameter 0.7cm, bed river sand, particle diameter 2mm, add circulating fluidized bed roasting furnace, recirculating fluidized bed roasts
Burn stove to add without auxiliary fuel, excess air coefficient 0.9, sintering temperature 450 DEG C.Liquefied petroleum gas auxiliary roasting device is opened, carefully
Powder calciner temperature 460 DEG C.Flue gas after heat exchange and fine powder, micropowder temperature 120 DEG C, the isolated fine powder of pulverized-coal collector is returned
Send back in circulating fluidized bed roasting furnace, the micropowder carbon content about 0.4% that dust removing device separates and collects.
Embodiment 3
Raw material powder coal ash, particle diameter 0.2cm, bed quartz sand, particle diameter 0.5mm, add circulating fluidized bed roasting furnace, recycle stream
Changing bed roaster and add auxiliary fuel natural gas, excess air coefficient 1.1, sintering temperature 850 DEG C, natural gas auxiliary roasting device is opened
Open, fine powder calciner temperature 830 DEG C.Flue gas after heat exchange and fine powder, micropowder temperature 150 DEG C, pulverized-coal collector is isolated carefully
Pruinescence foldback returns in circulating fluidized bed roasting furnace, the micropowder carbon content about 0.2% that dust removing device separates and collects.
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
Specific features, structure, material or the feature described in conjunction with this embodiment or example be contained in of the present utility model at least one
In embodiment or example.In this manual, the schematic representation to above-mentioned term be not necessarily referring to identical embodiment or
Example.And, the specific features of description, structure, material or feature can be in any one or more embodiments or examples
In combine in an appropriate manner.
This utility model preferred embodiment disclosed above is only intended to help to illustrate this utility model.Preferred embodiment is also
There is no all of details of detailed descriptionthe, be not intended to the detailed description of the invention that this utility model is only described yet.Obviously, according to this theory
The content of bright book, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
Explain principle of the present utility model and actual application, so that skilled artisan can be best understood by and utilize this
Utility model.This utility model is only limited by claims and four corner thereof and equivalent.
Claims (5)
1. circulate a calciner for carbonaceous material, including circulating fluidized bed roasting furnace (1), fine powder roaster (2), heat exchange
Device (3), pulverized-coal collector (4) and dust removing device (5), it is characterised in that: described circulating fluidized bed roasting furnace (1) includes promoting
Pipe (101), cyclone separator (102), material returning device (109)；The cyclone separator (102) of described circulating fluidized bed roasting furnace (1)
Outlet connect with fine powder roaster (2), the outlet of described fine powder roaster (2) is connected with dust removing device (5)；
Wherein, described riser (101) is provided with raw materials mouth (104), bed charge door (105), recycle stock charging
Mouth (107)；
Wherein, the import of described fine powder roaster (2) is connected with recycle stock charge door (107).
One the most according to claim 1 circulates calciner for carbonaceous material, it is characterised in that described heat exchanger
(3) side is connected with fine powder roaster (2)；The opposite side pulverized-coal collector (4) of described heat exchanger (3) connects.
One the most according to claim 1 circulates calciner for carbonaceous material, it is characterised in that described riser
(101) bottom is additionally provided with the entrance of material returning device (109)；Described riser (101) emulsion zone is provided with and adds without ash auxiliary fuel
Entrance, described riser (101) bottom is connected with aerator (108).
One the most according to claim 1 circulates calciner for carbonaceous material, it is characterised in that described ciculation fluidized
The charge door bottom of bed roaster (1) is fixed with air-distribution device (106).
One the most according to claim 1 circulates calciner for carbonaceous material, it is characterised in that described fine powder roasting
Stove (2) uses adiabatic form, and described fine powder roaster (2) is provided with auxiliary roasting device (201) controlling temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620732723.5U CN205856557U (en) | 2016-07-12 | 2016-07-12 | A kind of for carbonaceous material circulation calciner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620732723.5U CN205856557U (en) | 2016-07-12 | 2016-07-12 | A kind of for carbonaceous material circulation calciner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205856557U true CN205856557U (en) | 2017-01-04 |
Family
ID=57646047
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620732723.5U Withdrawn - After Issue CN205856557U (en) | 2016-07-12 | 2016-07-12 | A kind of for carbonaceous material circulation calciner |
Country Status (1)
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| CN (1) | CN205856557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058723A (en) * | 2016-07-12 | 2017-08-18 | 合肥德博生物能源科技有限公司 | One kind is used for carbonaceous material and circulates calciner and its method of roasting |
-
2016
- 2016-07-12 CN CN201620732723.5U patent/CN205856557U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058723A (en) * | 2016-07-12 | 2017-08-18 | 合肥德博生物能源科技有限公司 | One kind is used for carbonaceous material and circulates calciner and its method of roasting |
| CN107058723B (en) * | 2016-07-12 | 2018-04-10 | 合肥德博生物能源科技有限公司 | One kind is used for carbonaceous material circulation calciner and its method of roasting |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170104 Effective date of abandoning: 20180410 |
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| AV01 | Patent right actively abandoned |