CN104803618B - annular lime shaft kiln - Google Patents
annular lime shaft kiln Download PDFInfo
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- CN104803618B CN104803618B CN201510205835.5A CN201510205835A CN104803618B CN 104803618 B CN104803618 B CN 104803618B CN 201510205835 A CN201510205835 A CN 201510205835A CN 104803618 B CN104803618 B CN 104803618B
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- toroidal cavity
- outer ring
- ring wall
- combustion
- ringwall
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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- Muffle Furnaces And Rotary Kilns (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
A kind of annular lime shaft kiln, including kiln body, described kiln body is made up of outer ring wall and interior ringwall, toroidal cavity is formed between inside and outside ringwall, connection outer ring wall and the lintel of interior ringwall it is provided with in toroidal cavity, toroidal cavity is divided into the position being in burning zone on preheating zone, burning zone and cooling zone, outer ring wall and interior ringwall to be equipped with burner from top to bottom.The upper end of described toroidal cavity is provided with material-feeding mechanism, and the bottom of toroidal cavity is provided with discharging mechanism, and the outside of described inside and outside ringwall is provided with feed mechanism, combustion-supporting mechanism, cooling body and waste gas dedusting system.This lime shaft kiln uses the loop configuration being made up of inside and outside ringwall, it is easy to being uniformly distributed of air-flow in kiln body, it is easy to uniform calcination and the multiaspect calcining of lime stone, avoid sizing phenomenon, there is the features such as production efficiency high, energy consumption is low, environmental protection, operation is safe, simple to operate, floor space is little, small investment.
Description
Technical field
The present invention relates to a kind of equipment generating quick lime for calcined limestone, belong to lime burning equipment technical field.
Background technology
Quick lime is to be generated by calcined limestone, traditional production technology be lime stone and fuel load limekiln (if gas
Fuel is sent into through pipeline and burner) start to decompose to 850 degree after preheating, complete to calcine to 1200 degree, more after cooling,
Unload outside kiln discharge.Limekiln mainly by kiln body, feeding device, distribution device, burner, ash-discharging device, dust arrester and
Electric control gears etc. form.Applying most common is shaft furnace.The usage factor of common shaft furnace is below 50%, and power consumption height, production is imitated
Rate is low.
Therefore the limekiln that some production efficiencys are higher is occurred in that, " single thorax as disclosed in Chinese patent literature CN103359958A
Negative pressure, full-course dust-free production type double-hearth lime kiln ", CN102557492A disclosed " a kind of heat accumulating type double-hearth lime kiln " with
And CN102701610A is disclosed " Concurrent flow type double-hearth limekiln ", it is to use two burner hearths calcined limestone simultaneously, but its
Energy consumption does not reduce, and increases floor space simultaneously.
CN103641338B disclosed " a kind of to burning formula sleeve lime kiln ", including kiln body feed system, limekiln feeding system
System, kiln body outer sleeve, kiln body inner sleeve, inside and outside to burn formula burner group, annular air cooler, multipoint mode seal ash hoist
Group, finished product ash silo and finished product ash conveyer；Described kiln body feed system is arranged at the top of kiln body outer sleeve, itself and lime
Kiln feeding system docks mutually；Described kiln body inner sleeve is arranged in kiln body outer sleeve, forms an annular burning district between the two；
Inside and outside described, burning formula burner group is arranged in annular burning district；Described annular air cooler is arranged on bottom annular burning district；
Described multipoint mode seals ash discharge unit and is arranged on bottom annular air cooler；Described finished product ash silo is arranged on multipoint mode and seals
Bottom ash unit, dock mutually with finished product ash conveyer bottom it.Although this uses tube-in-tube structure, tool to burning formula sleeve lime kiln
There is plurality of advantages, but still have much room for improvement in terms of energy-conservation, calcining homogeneity and efficiency.
Summary of the invention
The deficiency existed for existing limekiln technology, the present invention proposes the annular lime that a kind of production efficiency is high, energy consumption is low and erects
Kiln.
The annular lime shaft kiln of the present invention, by the following technical solutions:
This annular lime shaft kiln, including kiln body, described kiln body is made up of outer ring wall and interior ringwall, between interior ringwall and outer ring wall
Forming toroidal cavity, be provided with connection outer ring wall and the lintel of interior ringwall in toroidal cavity, toroidal cavity is divided into pre-from top to bottom
The position being in burning zone on the torrid zone, burning zone and cooling zone, outer ring wall and interior ringwall is equipped with burner.
Described lintel layered arrangement from top to bottom in toroidal cavity.The bottom of described lintel is provided with cavity.
The inwall of described outer ring wall and the outer wall of interior ringwall are provided with refractory lining.
Described burner is two rows interlaced arrangement, and the burner on outer ring wall and interior ringwall is to spray, and each row's burner was respectively positioned on
Under beam.
The upper end of described toroidal cavity is provided with material-feeding mechanism, and the bottom of toroidal cavity is provided with discharging mechanism, described outer ring wall
Outside be provided with feed mechanism, combustion-supporting mechanism, cooling body and waste gas dedusting system.
Described feed mechanism includes hoist engine, truck and loading guide, and truck is arranged on loading guide, and with hoist engine even
Connect.
Described material-feeding mechanism includes feed bin, distributor chute and cloth valve, and feed bin is positioned at the lower section of loading guide upper end, feed bin
Bottom is provided with distributor chute, and each distributor chute is equipped with cloth valve, and each distributor chute is connected to outer ring wall and inner ring
Between wall, and connect with described toroidal cavity.
Described discharging mechanism includes discharging machine, discharging gate valve and middle ash silo, and discharging machine is distributed in the bottom of toroidal cavity, and
Be connected between outer ring wall and interior ringwall, each discharging machine be respectively provided with a discharging gate valve, the lower end of each discharging machine all with
Middle ash silo connects.
Described combustion-supporting mechanism includes combustion fan, heat exchanger and combustion-supporting pipeline, and combustion fan is connected with heat exchanger, and heat is handed over
Parallel operation is connected to outside outer ring wall by combustion-supporting pipeline and at the burning zone in inner ring portion within the walls.
Described cooling body includes cooling blower and cooling pipe, and cooling blower is by the cooling zone of cooling pipe with toroidal cavity
Connection.
Described waste gas dedusting system includes exhaust gas fan, deduster and exhaust piping, and exhaust gas fan is connected with deduster, waste gas
One end of pipeline is connected with deduster, and the other end is connected to the top of toroidal cavity, and exhaust piping connects heat exchanger.
The present invention uses the loop configuration being made up of inside and outside ringwall, arranges multilayer lintel, it is simple to gas in kiln body between inside and outside ringwall
Being uniformly distributed of stream, it is simple to the uniform calcination of lime stone and multiaspect calcining, it is to avoid sizing phenomenon, have production efficiency high,
The features such as energy consumption is low, environmental protection, operation is safe, simple to operate, floor space is little, small investment, the single seat ring-shaped shaft kiln odd-numbered day can
Produce lime more than 750 tons.
Accompanying drawing explanation
Fig. 1 is the structural representation of annular lime shaft kiln of the present invention.
Fig. 2 is the sectional view of kiln body in the present invention.
Fig. 3 is that the layout of lintel in the present invention launches schematic diagram.
Fig. 4 is the structural representation of lintel in the present invention.
In figure: 1, outer ring wall, 2, interior ringwall, 3, lintel, 4, burner, 5, hoist engine, 6, truck, 7, feeding leads
Rail, 8, feed bin, 9, distributor chute, 10, cloth valve, 11, ash hoist, 12, ash discharge gate valve, 13, middle ash silo,
14, cooling blower, 15, combustion fan, 16, exhaust gas fan, 17, deduster, 18, heat exchanger, 19, combustion tube
Road, 20, exhaust piping, 21, chimney, 22, lime stone, 23, space.
Detailed description of the invention
Fig. 1 gives the overall structure of the coal gas calcining annular lime shaft kiln of the present invention, mainly includes kiln body, the cross section of kiln body
Structure is as shown in Figure 2.This kiln body is made up of outer ring wall 1 and interior ringwall 2, and interior ringwall 2 is arranged in outer ring wall 1, both
Between form toroidal cavity, be provided with connection the outer ring wall 1 and multilayer (2-6 layer) of interior ringwall 2 in toroidal cavity from top to bottom
Lintel 3, material (lime stone) falls and resident in the toroidal cavity having lintel.The layout of lintel 3 as it is shown on figure 3,
The structure of lintel 3 as shown in Figure 4, is provided with cavity bottom it.The inwall of outer ring wall 1 and the outer wall of interior ringwall 2 are all with resistance to
Fire lining.Toroidal cavity is divided into preheating zone, burning zone and cooling zone (to be respectively at the top of toroidal cavity, middle part from top to bottom
And bottom), the lower end part that outer ring wall 1 and interior ringwall 2 are in burning zone is equipped with burner 4, and burner 4 is in two rows
Burner on interlaced arrangement, outer ring wall 1 and interior ringwall 2 is to spray.Each layer of burner is respectively positioned between two-layer lintel.Burner 3
Air-flow can go directly in the middle of kiln thorax, kiln temperature is evenly distributed, it is to avoid temperature excessively concentrates generation burning.
Lintel 3 is set between outer ring wall 1 and interior ringwall 2, has the effect that
1. lime stone cloth again when lintel 3, it is simple to the uniform calcination of lime stone；
2. lime stone realizes stirring when lintel 3, it is simple to the multiaspect calcining of lime stone；
3. lintel 3 is set and can improve blanking velocity, it is to avoid sizing；
4. the space 23 (seeing Fig. 3) that lintel 3 bottom is formed in lime stone 22 because of angle of repose both can realize kiln temperature
Directly measure, be easy to again being uniformly distributed of airstream in kiln.
Additionally, be provided with material-feeding mechanism in the upper end of toroidal cavity, the bottom of toroidal cavity is provided with discharging mechanism, outer ring wall 1
Outside be provided with feed mechanism, combustion-supporting mechanism, cooling body and waste gas dedusting system.
Feed mechanism includes hoist engine 5, truck 6 and loading guide 7, and truck 6 is arranged on loading guide 7, and and elevator
Machine 5 connects.Material is contained in truck 6, and under hoist engine 5 drives, truck 6 is up along loading guide 7, moves to
Loading guide 7 upper end, is poured into material in feed bin 8.
Material-feeding mechanism includes feed bin 8, distributor chute 9 and cloth valve 10, and feed bin 8 is positioned at the lower section of loading guide 7 upper end,
The bottom of feed bin 8 is provided with multiple distributor chute 9, and each distributor chute 9 is equipped with cloth valve 10, and cloth valve 10 is permissible
It is various valves electronic, that pneumatically or hydraulically control.Each distributor chute 9 is connected between outer ring wall 1 and interior ringwall 2,
And connect with described toroidal cavity.
Discharging mechanism includes discharging machine 11, discharging gate valve 12 and middle ash silo 13, and discharging machine 11 is distributed in the end of toroidal cavity
End, and is connected between outer ring wall 1 and interior ringwall 2, and each discharging machine 11 is respectively provided with a discharging gate valve 12, each go out
The lower end of material machine 11 is all connected with ash silo 13.The quick lime being stored in ash silo 13 is exported by belt conveyor.
Combustion-supporting mechanism includes that combustion fan 15, heat exchanger 18 and combustion-supporting pipeline 19, combustion fan 15 are handed over heat by pipeline
Parallel operation 18 connects, and heat exchanger 18 is connected to the burning zone outside outer ring wall 1 and within interior ringwall 2 by combustion-supporting pipeline 19
Place.The cold air of combustion fan 15 blowout becomes hot blast after over-heat-exchanger 18 exchanges, for providing HTHP in kiln body
Combustion air.Heat exchanger 18 is arranged on exhaust piping, can make full use of the waste heat of waste gas, improves the temperature of combustion air,
Reduce EGT, energy-conserving and environment-protective；Heat exchanger 18 uses deashing convenient vertical air preheater.
Cooling body includes cooling blower 14 and cooling pipe, and cooling blower 14 is by the cooling of cooling pipe with toroidal cavity
Band connects, for providing high pressure cooling wind bottom kiln body.
Waste gas dedusting system includes exhaust gas fan 16, deduster 17 and exhaust piping 20, exhaust gas fan 16 and deduster 17
Connecting, one end of exhaust piping 20 is connected with deduster 17, and the other end is connected to the top of toroidal cavity, exhaust piping 20
Upper connection has heat exchanger 18.Deduster 18 uses sack cleaner.Start exhaust gas fan 16, the high temperature in toroidal cavity
Waste gas sucks heat exchanger 18 through exhaust piping 20, the cold air heat exchange being blown into combustion fan 15, enters and remove after cooling
Dirt device 17, is discharged by deduster 17 after filtering dust, filters the waste gas after dust and enters air through chimney 19.EGT
The service life of deduster 17 can be extended after reduction.
If the internal diameter 5.6 meters of design kiln body, external diameter 9.6 meters, highly 26 meters, production capacity is up to 750 ton day
Lime stone lumpiness: 30～60 or 40～80mm, using cold clean producer gas is fuel, energy consumption :≤1100kcal/kg,
Activity of lime is 200～280ml, lime waste gas kiln discharge temperature: 350～420 DEG C.
Claims (2)
1. an annular lime shaft kiln, including kiln body, is characterized in that, described kiln body is made up of, in inner ring outer ring wall and interior ringwall
Form toroidal cavity between wall and outer ring wall, in toroidal cavity, be provided with connection outer ring wall and the lintel of interior ringwall, toroidal cavity
The position being in burning zone on preheating zone, burning zone and cooling zone, outer ring wall and interior ringwall it is divided into be equipped with burner from top to bottom；
Described lintel layered arrangement from top to bottom in toroidal cavity；Described burner is two rows interlaced arrangement, outer ring wall and inner ring
Burner on wall is to spray, and each layer of burner is respectively positioned under lintel.
Annular lime shaft kiln the most according to claim 1, is characterized in that, the upper end of described toroidal cavity is provided with material distributing machine
Structure, the bottom of toroidal cavity is provided with discharging mechanism, and the outside of described outer ring wall is provided with feed mechanism, combustion-supporting mechanism, cooling
Mechanism and waste gas dedusting system；Described combustion-supporting mechanism includes that combustion fan, heat exchanger and combustion-supporting pipeline, combustion fan are handed over heat
Parallel operation connects, and heat exchanger is connected to outside outer ring wall by combustion-supporting pipeline and at the burning zone in inner ring portion within the walls；Described waste gas
Dust pelletizing system includes exhaust gas fan, deduster and exhaust piping, and exhaust gas fan is connected with deduster, one end of exhaust piping with remove
Dirt device connects, and the other end is connected to the top of toroidal cavity, and exhaust piping connects described heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205835.5A CN104803618B (en) | 2015-04-27 | 2015-04-27 | annular lime shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205835.5A CN104803618B (en) | 2015-04-27 | 2015-04-27 | annular lime shaft kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104803618A CN104803618A (en) | 2015-07-29 |
| CN104803618B true CN104803618B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510205835.5A Active CN104803618B (en) | 2015-04-27 | 2015-04-27 | annular lime shaft kiln |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157415B (en) * | 2015-09-01 | 2018-03-09 | 北京嘉永会通能源科技有限公司 | Ring-shaped shaft kiln |
| CN111006501A (en) * | 2019-11-28 | 2020-04-14 | 北京科技大学 | Inner and outer ring alternating type heating device and method for high-temperature uniform calcination of shaft kiln |
| CN111099844B (en) * | 2020-01-03 | 2023-06-23 | 中冶长天国际工程有限责任公司 | Multi-row inserting plate type lime shaft kiln material distribution system and material distribution method |
| CN111559877B (en) * | 2020-05-27 | 2022-02-08 | 山西中齐锐能高温材料有限公司 | Ultrahigh-temperature shaft kiln |
| CN111732351B (en) * | 2020-06-29 | 2021-08-20 | 东北大学 | Sleeve lime kiln with combustion chambers distributed in staggered height |
| CN111807727A (en) * | 2020-09-02 | 2020-10-23 | 山东万方窑炉工程科技有限责任公司 | Double-rectangular-chamber heat-accumulation parallel-flow lime shaft kiln |
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- 2015-04-27 CN CN201510205835.5A patent/CN104803618B/en active Active
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| CN104803618A (en) | 2015-07-29 |
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