CN104803618A - Annular lime shaft kiln - Google Patents
Annular lime shaft kiln Download PDFInfo
- Publication number
- CN104803618A CN104803618A CN201510205835.5A CN201510205835A CN104803618A CN 104803618 A CN104803618 A CN 104803618A CN 201510205835 A CN201510205835 A CN 201510205835A CN 104803618 A CN104803618 A CN 104803618A
- Authority
- CN
- China
- Prior art keywords
- annular
- ring wall
- outer ring
- shaft kiln
- lime shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Abstract
The invention discloses an annular lime shaft kiln. The annular lime shaft kiln comprises kiln bodies, wherein each kiln body consists of an outer ring wall and an inner ring wall, an annular cavity is formed between the inner ring wall and the outer ring wall, lintels through which the outer ring wall and the inner ring wall are connected are arranged in the annular cavity, the annular cavity is divided into a preheating zone, a calcining zone and a cooling zone from up to down, and burner nozzles are respectively arranged at the parts at the calcining zone of the outer ring wall and the inner ring wall; a distribution mechanism is arranged at the upper ends of the annular cavities, a discharging mechanism is arranged at the bottoms of the annular cavities, a feeding mechanism, a combustion supporting mechanism, a cooling mechanism and a waste-gas dust-removal system are arranged on the outer sides of the inner ring walls and the outer ring walls. The annular lime shaft kiln adopts annular structures of the inner ring walls and the outer ring walls, so that the air in the kiln bodies can be uniformly distributed, limestone can be uniformly calcined in a plurality of directions, and the phenomenon that limestone is stuck is avoided; the annular lime shaft kiln has the characteristics of being high in production efficiency, low in energy consumption, environment-friendly, safe in running, simple to operate, small in occupied area, low in investment, and the like.
Description
Technical field
The present invention relates to a kind of calcined limestone that is used for and generate the equipment of unslaked lime, belong to lime burning equipment technical field.
Background technology
Unslaked lime is generated by calcined limestone, traditional production technique starts to decompose to 850 degree after Wingdale and fuel load limestone kiln (if geseous fuel is sent into through pipeline and burner) preheating, complete calcining to 1200 degree, then after cooling, unload outside kiln discharge.Limestone kiln is primarily of compositions such as kiln body, feeding device, distribution device, combustion unit, ash-discharging device, cleaning apparatus and electric control gears.Application the most generally shaft furnace.The utilization coefficient of common shaft furnace is below 50%, and consume energy high, production efficiency is low.
Therefore there is the limestone kiln that some production efficiencys are higher, " single thorax negative pressure, full-course dust-free production type double-hearth lime kiln ", CN102557492A disclosed " a kind of heat accumulating type double-hearth lime kiln " and CN102701610A disclosed " Concurrent flow type double-hearth limekiln " disclosed in Chinese patent literature CN103359958A, employing two burner hearths calcined limestones simultaneously, but its energy consumption does not reduce, and increases floor space simultaneously.
CN103641338B disclosed " a kind of to burning formula sleeve lime kiln ", comprises kiln body feed system, limestone kiln feeding system, the external sleeve of kiln, kiln body inner sleeve, inside and outside to burning formula burner group, annular air water cooler, multipoint mode sealing ash discharge unit, finished product ash silo and finished product ash transfer roller; Described kiln body feed system is arranged at the top of the external sleeve of kiln, and itself and limestone kiln feeding system connect; Described kiln body inner sleeve is arranged in the external sleeve of kiln, forms an annular burning district between the two; Be arranged in annular burning district to burning formula burner group inside and outside described; Described annular air water cooler is arranged on bottom annular burning district; Described multipoint mode sealing ash discharge unit is arranged on bottom annular air water cooler; Described finished product ash silo is arranged on bottom multipoint mode sealing ash discharge unit, connects bottom it with finished product ash transfer roller.Although this adopts tube-in-tube structure to burning formula sleeve lime kiln, there is plurality of advantages, still have much room for improvement in energy-conservation, calcining homogeneity and efficiency.
Summary of the invention
For the deficiency that existing limestone kiln technology exists, the present invention proposes the annular lime shaft kiln that a kind of production efficiency is high, energy consumption is low.
Annular lime shaft kiln of the present invention, by the following technical solutions:
This annular lime shaft kiln, comprise kiln body, described kiln body is made up of outer ring wall and interior ringwall, annular cavity is formed between interior ringwall and outer ring wall, the lintel connecting outer ring wall and interior ringwall is provided with in annular cavity, annular cavity is divided into preheating zone, calcining zone and cooling zone from top to bottom, and position outer ring wall and interior ringwall being in calcining zone is equipped with burner.
Described lintel layered arrangement from top to bottom in annular 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 staggered arrangement, and the burner on outer ring wall and interior ringwall is to spray, and each row's burner is all positioned under lintel.
The upper end of described annular cavity is provided with material-feeding mechanism, and the bottom of annular cavity is provided with discharging mechanism, and the arranged outside of described outer ring wall has feed mechanism, combustion-supporting mechanism, cooling body and waste gas dedusting system.
Described feed mechanism comprises windlass, truck and loading guide, and truck is arranged on loading guide, and is connected with windlass.
Described material-feeding mechanism comprises feed bin, distributor chute and cloth valve, feed bin is positioned at the below of loading guide upper end, and the bottom of feed bin is provided with distributor chute, each distributor chute is equipped with cloth valve, each distributor chute is connected between outer ring wall and interior ringwall, and is communicated with described annular cavity.
Described discharging mechanism comprises discharging machine, discharging gate valve and middle ash silo, discharging machine is distributed in the bottom of annular cavity, and being connected between outer ring wall and interior ringwall, each discharging machine is all arranged a discharging gate valve, the lower end of each discharging machine is all connected with middle ash silo.
Described combustion-supporting mechanism comprises burner blower, heat exchanger and combustion-supporting pipeline, and burner blower is connected with heat exchanger, and heat exchanger to be connected to outside outer ring wall by combustion-supporting pipeline and the calcining zone place in inner ring portion within the walls.
Described cooling body comprises cooling blower and cooling duct, and cooling blower is communicated with the cooling zone of annular cavity by cooling duct.
Described waste gas dedusting system comprises exhaust gas fan, fly-ash separator and exhaust pipeline, and exhaust gas fan is connected with fly-ash separator, and one end of exhaust pipeline is connected with fly-ash separator, and the other end is connected to the top of annular cavity, and exhaust pipeline is connected with heat exchanger.
The present invention adopts the ring structure be made up of inside and outside ringwall, between inside and outside ringwall, multilayer lintel is set, be convenient to being uniformly distributed of air-flow in kiln body, be convenient to uniform calcination and the multiaspect calcining of Wingdale, avoid sizing phenomenon, have the features such as production efficiency is high, energy consumption is low, environmental protection, operating safety, simple to operate, floor space is little, less investment, the single seat ring-shaped shaft kiln odd-numbered day can produce more than 750 tons, lime.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's annular lime shaft kiln.
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, windlass, 6, truck, 7, loading guide, 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, burner blower, 16, exhaust gas fan, 17, fly-ash separator, 18, heat exchanger, 19, combustion-supporting pipeline, 20, exhaust pipeline, 21, chimney, 22, Wingdale, 23, space.
Embodiment
Fig. 1 gives the one-piece construction that coal gas of the present invention calcines annular lime shaft kiln, mainly comprises kiln body, and the cross section structure of kiln body as shown in Figure 2.This kiln body is made up of outer ring wall 1 and interior ringwall 2, interior ringwall 2 is arranged in outer ring wall 1, form annular cavity between the two, be provided with multilayer (2-6 layer) lintel 3 connecting outer ring wall 1 and interior ringwall 2 in annular cavity from top to bottom, material (Wingdale) falls and resident in the annular cavity having lintel.As shown in Figure 3, the structure of lintel 3 as shown in Figure 4, is provided with cavity bottom it to the layout of lintel 3.The inwall of outer ring wall 1 and the outer wall of interior ringwall 2 are all with refractory lining.Annular cavity is divided into preheating zone, calcining zone and cooling zone (being in the upper, middle and lower of annular cavity respectively) from top to bottom, lower end part outer ring wall 1 and interior ringwall 2 being in calcining zone is equipped with burner 4, burner 4 is in two rows staggered arrangement, and the burner on outer ring wall 1 and interior ringwall 2 is to spray.Every one deck burner is all between two-layer lintel.The air-flow of burner 3 can go directly in the middle of kiln thorax, and kiln temperature is evenly distributed, and avoids temperature and too concentrates and produce burning.
Lintel 3 is set between outer ring wall 1 and interior ringwall 2, there is following effect:
1. Wingdale cloth again when lintel 3, is convenient to the uniform calcination of Wingdale;
2. Wingdale realizes stirring when lintel 3, is convenient to the multiaspect calcining of Wingdale;
3. lintel 3 is set and can improves blanking velocity, avoid sizing;
4. lintel 3 bottom both can realize the direct measurement of kiln temperature because of space 23 (see Fig. 3) that angle of repose is formed in Wingdale 22, was convenient to again being uniformly distributed of airstream in kiln.
In addition, the upper end of annular cavity is provided with material-feeding mechanism, the bottom of annular cavity is provided with discharging mechanism, and the arranged outside of outer ring wall 1 has feed mechanism, combustion-supporting mechanism, cooling body and waste gas dedusting system.
Feed mechanism comprises windlass 5, truck 6 and loading guide 7, and truck 6 is arranged on loading guide 7, and is connected with windlass 5.Material is contained in truck 6, and under windlass 5 drives, truck 6 is up along loading guide 7, moves to loading guide 7 upper end, is poured into by material in feed bin 8.
Material-feeding mechanism comprises feed bin 8, distributor chute 9 and cloth valve 10, feed bin 8 is positioned at the below 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 can be electronic, pneumatic or the various valves of hydrostatic control.Each distributor chute 9 is connected between outer ring wall 1 and interior ringwall 2, and is communicated with described annular cavity.
Discharging mechanism comprises discharging machine 11, discharging gate valve 12 and middle ash silo 13, discharging machine 11 is distributed in the bottom of annular cavity, and being connected between outer ring wall 1 and interior ringwall 2, each discharging machine 11 is all arranged a discharging gate valve 12, the lower end of each discharging machine 11 is all connected with ash silo 13.The unslaked lime be stored in ash silo 13 is exported by belt conveyor.
Combustion-supporting mechanism comprises burner blower 15, heat exchanger 18 and combustion-supporting pipeline 19, and burner blower 15 is connected with heat exchanger 18 by pipeline, and heat exchanger 18 is connected to the calcining zone place with interior ringwall 2 inside outside outer ring wall 1 by combustion-supporting pipeline 19.The freezing air that burner blower 15 blows out becomes hot blast, for providing High Temperature High Pressure combustion air in kiln body after over-heat-exchanger 18 exchanges.Heat exchanger 18 is arranged on exhaust pipeline, can make full use of the waste heat of waste gas, improves the temperature of combustion air, reduces spent air temperture, energy-conserving and environment-protective; Heat exchanger 18 adopts deashing vertical air preheater easily.
Cooling body comprises cooling blower 14 and cooling duct, and cooling blower 14 is communicated with the cooling zone of annular cavity by cooling duct, for providing high pressure cooling air bottom kiln body.
Waste gas dedusting system comprises exhaust gas fan 16, fly-ash separator 17 and exhaust pipeline 20, exhaust gas fan 16 is connected with fly-ash separator 17, one end of exhaust pipeline 20 is connected with fly-ash separator 17, and the other end is connected to the top of annular cavity, exhaust pipeline 20 is connected with heat exchanger 18.Fly-ash separator 18 adopts sack cleaner.Start exhaust gas fan 16, high-temp waste gas in annular cavity sucks heat exchanger 18 through exhaust pipeline 20, and the freezing air heat exchange be blown into burner blower 15, enters fly-ash separator 17 after cooling, discharged by fly-ash separator 17 after filtering dust, the waste gas after filter dust enters air through chimney 19.Spent air temperture can extend the work-ing life of fly-ash separator 17 after reducing.
If the internal diameter 5.6 meters of design kiln body, external diameter 9.6 meters, height 26 meters, throughput can reach 750 tons of/day limestone block degree: 30 ~ 60 or 40 ~ 80mm, cold clean producer gas is adopted to be fuel, energy consumption :≤1100kcal/kg, activity of lime is 200 ~ 280ml, lime waste gas kiln discharge temperature: 350 ~ 420 DEG C.
Claims (10)
1. an annular lime shaft kiln, comprise kiln body, it is characterized in that, described kiln body is made up of outer ring wall and interior ringwall, annular cavity is formed between interior ringwall and outer ring wall, be provided with the lintel connecting outer ring wall and interior ringwall in annular cavity, annular cavity is divided into preheating zone, calcining zone and cooling zone from top to bottom, and position outer ring wall and interior ringwall being in calcining zone is equipped with burner.
2. annular lime shaft kiln according to claim 1, is characterized in that, described lintel layered arrangement from top to bottom in annular cavity.
3. annular lime shaft kiln according to claim 1, is characterized in that, the bottom of described lintel is provided with cavity.
4. annular lime shaft kiln according to claim 1, is characterized in that, described burner is two rows staggered arrangement, and the burner on outer ring wall and interior ringwall is to spray, and every one deck burner is all positioned under lintel.
5. annular lime shaft kiln according to claim 1, it is characterized in that, the upper end of described annular cavity is provided with material-feeding mechanism, and the bottom of annular cavity is provided with discharging mechanism, and the arranged outside of described outer ring wall has feed mechanism, combustion-supporting mechanism, cooling body and waste gas dedusting system.
6. annular lime shaft kiln according to claim 5, is characterized in that, described feed mechanism comprises windlass, truck and loading guide, and truck is arranged on loading guide, and is connected with windlass.
7. annular lime shaft kiln according to claim 5, it is characterized in that, described material-feeding mechanism comprises feed bin, distributor chute and cloth valve, feed bin is positioned at the below of loading guide upper end, the bottom of feed bin is provided with distributor chute, each distributor chute is equipped with cloth valve, each distributor chute is connected between outer ring wall and interior ringwall, and is communicated with described annular cavity.
8. annular lime shaft kiln according to claim 5, it is characterized in that, described discharging mechanism comprises discharging machine, discharging gate valve and middle ash silo, discharging machine is distributed in the bottom of annular cavity, and be connected between outer ring wall and interior ringwall, each discharging machine is all arranged a discharging gate valve, the lower end of each discharging machine is all connected with ash silo.
9. annular lime shaft kiln according to claim 5, it is characterized in that, described combustion-supporting mechanism comprises burner blower, heat exchanger and combustion-supporting pipeline, and burner blower is connected with heat exchanger, and heat exchanger to be connected to outside outer ring wall by combustion-supporting pipeline and the calcining zone place in inner ring portion within the walls.
10. annular lime shaft kiln according to claim 5, it is characterized in that, described waste gas dedusting system comprises exhaust gas fan, fly-ash separator and exhaust pipeline, exhaust gas fan is connected with fly-ash separator, one end of exhaust pipeline is connected with fly-ash separator, the other end is connected to the top of annular cavity, and exhaust pipeline is connected with 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 true CN104803618A (en) | 2015-07-29 |
| CN104803618B CN104803618B (en) | 2016-09-07 |
Family
ID=53688879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510205835.5A Active CN104803618B (en) | 2015-04-27 | 2015-04-27 | annular lime shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104803618B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157415A (en) * | 2015-09-01 | 2015-12-16 | 北京嘉永会通能源科技有限公司 | Annular 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 |
| CN111099844A (en) * | 2020-01-03 | 2020-05-05 | 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 |
| CN111559877A (en) * | 2020-05-27 | 2020-08-21 | 山西中齐锐能高温材料有限公司 | Novel ultra-high temperature shaft kiln |
| CN111732351A (en) * | 2020-06-29 | 2020-10-02 | 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 |
-
2015
- 2015-04-27 CN CN201510205835.5A patent/CN104803618B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157415A (en) * | 2015-09-01 | 2015-12-16 | 北京嘉永会通能源科技有限公司 | Annular 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 |
| CN111099844A (en) * | 2020-01-03 | 2020-05-05 | 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 |
| 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 |
| CN111559877A (en) * | 2020-05-27 | 2020-08-21 | 山西中齐锐能高温材料有限公司 | Novel ultra-high temperature shaft kiln |
| CN111732351A (en) * | 2020-06-29 | 2020-10-02 | 东北大学 | Sleeve lime kiln with combustion chambers distributed in staggered height |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104803618B (en) | 2016-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104803618A (en) | Annular lime shaft kiln | |
| CN102219402B (en) | Method and device for calcining materials | |
| CN105036168B (en) | High-temperature-calcined [alpha]-Al2O3 production energy-saving apparatus and novel method | |
| CN204550403U (en) | Annular lime shaft kiln | |
| CN106495508A (en) | A kind of environmental protection and energy saving light calcined magnesia calcining kiln | |
| CN109970375A (en) | A kind of building gypsum plaster production line | |
| CN102230726B (en) | Sleeve type continuous calcining vertical kiln | |
| CN208218696U (en) | A kind of light-burned MgO suspension calcining process units | |
| CN108164161A (en) | A kind of extra light calcined magnesia suspended state calcination system and preparation method of magnesia | |
| CN102992661B (en) | Beam type heat storage lime kiln | |
| CN104833203B (en) | A kind of heat accumulating type installation for calcining cement | |
| CN101817649A (en) | Method and equipment for calculating materials | |
| CN101852542A (en) | Vertical kiln | |
| CN101349500A (en) | Vertical kiln | |
| CN102992660A (en) | Low-heat value fuel lime kiln | |
| CN203478938U (en) | Rotary kiln apparatus with energy recovery equipment | |
| CN204923825U (en) | Alumina shaft kiln is calcined to flaring formula circular section | |
| CN109520284A (en) | A kind of five-part form magnesia unslacked energy conservation and environmental protection shaft furnace | |
| CN103335514A (en) | Rotary kiln device provided with energy recovery equipment | |
| CN102951859B (en) | Heat accumulating type lime kiln | |
| CN105157415B (en) | Ring-shaped shaft kiln | |
| CN102183142B (en) | Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime | |
| CN103803515A (en) | Decarbonizing calcining device of yellow phosphorus ores | |
| CN204848302U (en) | High temperature burning alpha - aluminium oxide production economizer | |
| JPH0776671B2 (en) | Preheater for powdery raw materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |