CN102627418A - Compound lime kiln - Google Patents
Compound lime kiln Download PDFInfo
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- CN102627418A CN102627418A CN201210124833XA CN201210124833A CN102627418A CN 102627418 A CN102627418 A CN 102627418A CN 201210124833X A CN201210124833X A CN 201210124833XA CN 201210124833 A CN201210124833 A CN 201210124833A CN 102627418 A CN102627418 A CN 102627418A
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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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Abstract
The invention relates to a compound lime kiln, comprising a kiln body, a charging equipment, a discharging equipment, a control system and an exhaust system.A preheating zone, a\calcining zone and a cooling zone are in the kiln body. A smoke outlet or a fume extractor is arranged in the preheating zone, and the smoke outlet or the fume extractor is connected with the exhaust system. A cooling tuyere is arranged in the cooling zone, and a cooling air inlet is connected with a cooling fan. Two to four granule kiln bins are arranged in the device. Granule hoppers, granule charging locks and cooling air outlets are arranged in the granule kiln bins. The underpart of the granule kiln bins are connected with the cooling zone. The cooling air outlet is connected with the exhaust system. Granule kiln bins are arranged in the device in the invention, exhaust gas after lime cooling is utilized to preheat granule limestone materials, and simultaneously large particle and granule materials are calcined, so that the preheating fully utilizes resources of limestones, effectively utilizes energy, reduces consumption and improves productivity. The cooling air does not enter the calcining zone, which is beneficial to an improving of calcining effects of the calcining zone, a reducing of a pressure load of the kiln body and an improving of qualities of the lime products.
Description
Technical field
The invention belongs to building materials, chemical production equipment technical field, relate to a kind of equipment of calcining materials, be specifically related to a kind of combined type limestone kiln of calcining size particles simultaneously.
Background technology
Lime is important material of construction, also is important source material metallurgical, chemical field, and prior art is to be raw material with rhombspar, Wingdale, adopts the shaft furnace lime kilning of band burning beam.The deficiency of process is like this: furnace gas mobile direction and building stones mobile are in the opposite direction in the shaft furnace, and promptly building stones move from the top down, and furnace gas flows from bottom to top; The air resistance of building stones is big, and furnace pressure is high, occurs the gas segregation phenomenon easily; It is inhomogeneous to cause Wingdale to be heated, and influences quality product.The applicant the patent No. be the utility model patent of ZL200320111077.3 disclose a kind of in the external heating type limestone kiln; The firing system of this limestone kiln is provided with combustion tube of furnace beam and peripheral burner, and combustion tube of furnace beam is provided with burner (burner), has solved the distribution of calcining zone flame and heat effectively; Improved efficiency of combustion; But combustion tube of furnace beam need cool off the beam body with heat-eliminating medium in the course of the work, not only slatterns some heats, and has increased equipment cost and process cost.
In building stones production and gatherer process, can produce some short grained Wingdales, small-particle Wingdale volume is little, and the slit is little between the particle, and air resistance is big.Large and small particle is mixed together calcining, and small-particle can fill up the space between the macrobead, can produce very high air resistance in the kiln body, and influence calcining effect causes to give birth to and burns or burning.Therefore, general calcined limestone is selected the building stones of granularity 30～100mm, and granularity can only abandon or change less than the 30mm building stones and use it for anything else, and this is a kind of waste of resource.
On the other hand since cooling air get into from kiln body bottom the kiln body through the cooling zone cool lime after behind the calcining zone, preheating zone top and the flue gas one from kiln play blowdown system; Cooling air passes whole burner hearth; Influence the burning of calcining zone, increase the intravital pressure load of kiln.
Summary of the invention
For overcome prior art deficiency, the present invention provides a kind of combined type limestone kiln, makes the waste gas after calcining back flue gas and the cool lime get into exhaust emission system respectively, and calcines the limestone material of size particles simultaneously, makes full use of resource.
Combined type of the present invention limestone kiln comprises kiln body, apparatus for feeding, discharging equipment, system and exhaust emission system.Preheating zone, calcining zone and cooling zone are arranged in the kiln body.The preheating zone is provided with exhanst gas outlet or fume extractor, and exhanst gas outlet or fume extractor are connected with exhaust emission system.Cooling zone is provided with cooling air inlet, and cooling air inlet is connected with cooling blower.Device also is provided with 2～4 small-particle kiln storehouses and 2～4 airducts, and small-particle kiln storehouse is provided with small-particle hopper, airduct, cooling air inlet and cooling air outlet, and the bottom in small-particle kiln storehouse is communicated with cooling zone top.Airduct is positioned at the outside of kiln body; The inlet of airduct passes the middle part that the kiln wall inserts cooling zone; The inlet of airduct is positioned at the bottom of cooling zone, and the outlet of airduct is connected with the cooling air inlet in small-particle kiln storehouse, and the cooling air outlet in small-particle kiln storehouse is connected with exhaust emission system.
The limestone kiln is beam-type limekiln, sleeve kiln, arch bridge kiln, wheat Wurz kiln or Xinhua's wheat Wurz kiln.The top, preheating zone of beam-type limekiln is provided with suction bar, and calcining zone is provided with 1～5 layer of burning beam, every layer of 1～5 burning beam, and burning beam is provided with burner.Burner is geseous fuel burner, liquid fuel burner or solid fuel burner, or the combination of above-mentioned burner.Burning beam is provided with beam body cooling infrastructure.The sleeve kiln is provided with combustion chamber, last inner core, following inner core and firebridge; The combustion chamber is divided into upper and lower two-layer, and every layer is provided with 3～8 combustion chambers, and same layer combustion chamber evenly arranged; Link to each other through firebridge between the upper and lower layer combustion chamber staggered arrangement, each combustion chamber and inner core.The preheating zone of arch bridge kiln is provided with 1～5 suction bar, and calcining zone is provided with 1～5 grate firing and burns arch bridge, and every layer of 1～10 burning arch bridge and 2～20 burners, burner are positioned at the bottom at burning arch bridge two ends.The burning arch bridge is provided with the cavity of heat-eliminating medium circulation, and burner is gaseous fuel burners, liquid fuel burner or solid fuel burner, or the combination of said burner.Exhaust emission system comprises fly-ash separator, induced draft fan and chimney.
It is 10～30cm small-particle work stone lime stone or rhombspar that combined type of the present invention limestone kiln is used for calcining simultaneously macrobead Wingdale that particle diameter is 20～80cm or rhombspar and particle diameter.
Combined type of the present invention limestone kiln is through setting up small-particle kiln storehouse; Utilize the small-particle limestone material in the high-temp waste gas preheating small-particle kiln storehouse after the cool lime,, calcine large and small granule materials simultaneously in the heat and calcining small-particle limestone material that cooling zone utilizes macrobead lime to carry; Make full use of limestone resource; Effective use of energy sources reduces consuming, and improves production capacity.Flue gas after the cool lime after waste gas and the calcining separately gets into exhaust emission system respectively, and cooling air does not get into calcining zone, disturbs the burning of calcining zone, helps improving the calcining effect of calcining zone, alleviates the pressure load of kiln body, improves the quality of lime product.
Description of drawings
Fig. 1 is a combined type of the present invention limestone kiln structural representation;
Fig. 2 is the structural representation of another embodiment of the present invention;
Fig. 3 is the present invention's structural representation of a scheme again.
Wherein:
1-charging lock, 2-suction bar, 3-kiln body, 4-burning arch bridge, 5-small-particle hopper, 6-airduct, 7-small-particle kiln storehouse, 8--cooling zone, 9-cooling air port, 10-discharging lock, 11-preheating zone, 12-calcining zone, 13-cooling air outlet, 14-cooling air inlet, 15-burner, 16-cooling blower, 17-sleeve kiln wall, 18-last inner core, 19-following inner core, 20-firebridge, 21-valve, 22-burning beam.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explanation.
Embodiment 1
Combined type of the present invention limestone kiln is as shown in Figure 1, is beam-type limekiln, comprises kiln body 3, apparatus for feeding, discharging equipment, system, 2 small-particle kiln storehouses 7, two airducts 6 and exhaust emission systems.Be provided with preheating zone 11, calcining zone 12 and cooling zone 8 in the kiln body.The preheating zone is provided with two suction bars 2, and suction bar is provided with 10 suction orifices, and suction bar is connected with exhaust emission system, and cooling zone is provided with cooling air port 9, and cooling air inlet is connected with cooling blower 16 through pipeline.Calcining zone is provided with two- layer burning beam 22,3 burning beams in upper strata, 2 burning beams of lower floor.Every burning beam is provided with 10 burners, and burner is the geseous fuel burner.Small-particle kiln storehouse is provided with small-particle hopper 5, cooling air inlet 14 and cooling air outlet 13, and the bottom in small-particle kiln storehouse is communicated with cooling zone top.Airduct is positioned at the outside of kiln body, and the inlet of airduct passes the middle part that the kiln wall inserts cooling zone 8, and the outlet of airduct is connected with small-particle kiln storehouse cooling air inlet 14, and cooling air outlet 13 is connected with exhaust emission system.Exhaust emission system comprises fly-ash separator, induced draft fan and chimney.
Utilize the process of combined type of the present invention limestone kiln calcining materials to do; Particle diameter is that the limestone block material of 40～80cm gets in the kiln body 3 of beam-type limekiln through charging lock 1 through apparatus for feeding, and the high-temperature flue gas after preheating zone 11 is by the calcining zone calcining materials carries out preheating to Wingdale.Limestone material after the preheating falls into calcining zone 12, and by the burner of the burning beam 22 ejection fuel calcined limestone material that burns, calcining temperature is 1200～1400 ℃, and the lime that is sintered into falls into cooling zone 8.The small-particle limestone material of 10～30cm gets into small-particle kiln storehouse 7 through apparatus for feeding, small-particle hopper 5 and small-particle charging lock, gets into small-particle kiln storehouse by the high temperature air after the cooling zone cool lime small-particle Wingdale is carried out preheating.Small-particle Wingdale after the preheating moves to cooling zone top downwards to be mixed with macrobead lime under the kiln body drop, by the heat of high temperature macrobead lime band and calcine the small-particle Wingdale, the small-particle limestone calcination is become lime.Size particles lime together continues cooling through the bottom of cooling zone, goes out device through discharging lock 10 then.Fuel and combustion air get into burning beam 22 and burn; Through burner ejection fuel and combustion-supporting gas burning calcined limestone; Flue gas upwards moves the preheating Wingdale after the suction orifice of suction bar 2 gets into suction bar, and to the exhaust emission system discharging, the temperature of discharging is lower than 150 ℃ through suction bar.Cooling air is bloated by cooling blower 16, gets into the cooling zone cool lime through cooling air port 9, and the high temperature air after the cool lime gets into small-particle kiln storehouse 7, preheating small-particle limestone material through airduct 6, cooling air inlet 14.To the exhaust emission system discharging, the temperature of discharging gas is lower than 150 ℃ to air through cooling air outlet 13 behind the preheating small particles material.Through the action of by-pass valve control 21, two small-particle kiln storehouse 7 alternate runs.
Another embodiment of the present invention is as shown in Figure 2, and the limestone kiln is the sleeve kiln, is provided with combustion chamber, last inner core 18, following inner core 19 and firebridge 20.The combustion chamber is divided into upper and lower two-layer, and every layer is provided with 6 combustion chambers, and same layer combustion chamber evenly arranged, upper and lower layer combustion chamber staggered arrangement links to each other through firebridge between each combustion chamber and the inner core.Inner core and urceolus arranged concentric form an annular space, Wingdale preheating in annular space, calcining.Firebridge is that refractory brick is built the arch form structure that forms by laying bricks or stones, and the high-temperature flue gas that burning produces gets into the Wingdale bed of material through the space under the arch form firebridge.Limestone material gets into kiln intravital preheating zone preheating through feeding device, is sintered into lime through calcining zone, falls into the cooling zone cooling then.Identical with the mixing of small-particle limestone material, calcining and refrigerative process with embodiment 1.
An embodiment more of the present invention is as shown in Figure 3, and the limestone kiln is the arch bridge kiln, and the calcining zone of arch bridge kiln is provided with two-layer burning arch bridge 4, and the upper strata is provided with 4 burning arch bridges, and lower floor is provided with 3 burning arch bridges, two-layer burning arch bridge staggered arrangement.The bottom at the two ends of every burning arch bridge is provided with burner 15, and burner is two kinds of solid combustion device and gas burners, can use a kind of burner separately, or use two kinds of burners simultaneously.The preheating zone is provided with 3 suction bars 2.Other structure is identical with embodiment 1 with operation scheme.
Claims (8)
1. combined type limestone kiln; Comprise kiln body (3), apparatus for feeding, discharging equipment, system and exhaust emission system; Be provided with preheating zone (11), calcining zone (12) and cooling zone (8) in the said kiln body; Said preheating zone is provided with exhanst gas outlet or suction bar (2), and exhanst gas outlet or suction bar are connected with exhaust emission system, and cooling zone is provided with cooling air port (9); Cooling air inlet is connected with cooling blower (16); It is characterized in that: said device also is provided with 2～4 small-particle kiln storehouses (7) and 2～4 airducts (6), and said small-particle kiln storehouse is provided with small-particle hopper (5), cooling air inlet (14) and cooling air outlet (13), and the bottom in small-particle kiln storehouse is communicated with cooling zone top; Said airduct is positioned at the outside of kiln body, and the inlet of airduct passes the middle part that the kiln wall inserts cooling zone (8), and the outlet of airduct is connected with cooling air inlet (14), and cooling air outlet (13) is connected with exhaust emission system.
2. combined type according to claim 1 limestone kiln is characterized in that: said limestone kiln is beam-type limekiln, sleeve kiln, arch bridge kiln, wheat Wurz kiln or Xinhua's wheat Wurz kiln.
3. combined type according to claim 2 limestone kiln is characterized in that: the top, preheating zone of said beam-type limekiln is provided with suction bar (2), and calcining zone is provided with 1～5 layer of burning beam (22), every layer of 1～5 burning beam; Said burning beam is provided with burner.
4. combined type according to claim 3 limestone kiln is characterized in that: said burning beam is provided with beam body cooling infrastructure, and said burner is geseous fuel burner, liquid fuel burner or solid fuel burner, or the combination of above-mentioned burner.
5. combined type according to claim 2 limestone kiln; It is characterized in that: said sleeve kiln is provided with combustion chamber, last inner core (18), following inner core (19) and firebridge (20); Said combustion chamber is divided into upper and lower two-layer, and every layer is provided with 3～8 combustion chambers, and same layer combustion chamber evenly arranged; Link to each other through firebridge between the upper and lower layer combustion chamber staggered arrangement, each combustion chamber and inner core.
6. combined type according to claim 2 limestone kiln; It is characterized in that: the preheating zone of said arch bridge kiln is provided with suction bar (2); Calcining zone is provided with 1～5 grate firing and burns arch bridge (4); 1～10 every layer burning arch bridge (4) and 2～20 burners (15), burner are positioned at the bottom at burning arch bridge two ends.
7. combined type according to claim 6 limestone kiln; It is characterized in that: said burning arch bridge (4) inside can be provided with the cavity of heat-eliminating medium circulation; Said burner is gaseous fuel burners, liquid fuel burner or solid fuel burner, or the combination of said burner.
8. combined type according to claim 1 limestone kiln is characterized in that: exhaust emission system comprises fly-ash separator, induced draft fan and chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210124833XA CN102627418B (en) | 2012-04-26 | 2012-04-26 | Compound lime kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210124833XA CN102627418B (en) | 2012-04-26 | 2012-04-26 | Compound lime kiln |
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| CN102627418A true CN102627418A (en) | 2012-08-08 |
| CN102627418B CN102627418B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210124833XA Active CN102627418B (en) | 2012-04-26 | 2012-04-26 | Compound lime kiln |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542714A (en) * | 2012-07-13 | 2014-01-29 | 蒋明学 | Large partition wall type multi-tube shaft kiln |
| CN104249239A (en) * | 2013-06-28 | 2014-12-31 | 上海宝冶建设工业炉工程技术有限公司 | Manufacture method of inner sleeve of lime sleeve kiln |
| CN109186273A (en) * | 2018-12-05 | 2019-01-11 | 中冶长天国际工程有限责任公司 | A kind of limekiln hybrid heating system and its control method |
| CN109592915A (en) * | 2017-09-30 | 2019-04-09 | 山东博研粉体技术装备有限公司 | A kind of double thorax kiln ash discharge systems |
| CN110526596A (en) * | 2018-05-23 | 2019-12-03 | 绵竹市拱星氧化钙厂 | The mixing formula limekiln of fast cooling discharging |
| CN110590195A (en) * | 2019-10-09 | 2019-12-20 | 新疆中泰矿冶有限公司 | Method for increasing yield and efficiency of Maerz lime kiln |
| CN111217542A (en) * | 2020-03-23 | 2020-06-02 | 南京威普粉体工程有限公司 | Sleeve shaft kiln for horizontal flow lime calcination |
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| JPS5531298A (en) * | 1978-08-18 | 1980-03-05 | Kloeckner Humboldt Deutz Ag | Method and furnace for heatttreating substance of size ranging from large diameter to small diameter |
| DE3149389C2 (en) * | 1980-12-15 | 1986-01-02 | Chichibu Cement K.K., Tokio/Tokyo | Apparatus for calcining materials in the form of powder or particles |
| KR20030087359A (en) * | 2002-05-08 | 2003-11-14 | 주식회사 포스코 | Device for manufacturing quick lime by screening limestone of rotary kiln |
| CN101585669A (en) * | 2009-07-08 | 2009-11-25 | 贾会平 | Converging type limekiln |
| CN201620107U (en) * | 2009-07-21 | 2010-11-03 | 贾会平 | Multi-hearth lime kiln |
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2012
- 2012-04-26 CN CN201210124833XA patent/CN102627418B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5531298A (en) * | 1978-08-18 | 1980-03-05 | Kloeckner Humboldt Deutz Ag | Method and furnace for heatttreating substance of size ranging from large diameter to small diameter |
| DE3149389C2 (en) * | 1980-12-15 | 1986-01-02 | Chichibu Cement K.K., Tokio/Tokyo | Apparatus for calcining materials in the form of powder or particles |
| KR20030087359A (en) * | 2002-05-08 | 2003-11-14 | 주식회사 포스코 | Device for manufacturing quick lime by screening limestone of rotary kiln |
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| CN201620107U (en) * | 2009-07-21 | 2010-11-03 | 贾会平 | Multi-hearth lime kiln |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542714A (en) * | 2012-07-13 | 2014-01-29 | 蒋明学 | Large partition wall type multi-tube shaft kiln |
| CN103542714B (en) * | 2012-07-13 | 2016-08-03 | 蒋明学 | Many large-scale shaft furnaces of wall partition type |
| CN104249239A (en) * | 2013-06-28 | 2014-12-31 | 上海宝冶建设工业炉工程技术有限公司 | Manufacture method of inner sleeve of lime sleeve kiln |
| CN109592915A (en) * | 2017-09-30 | 2019-04-09 | 山东博研粉体技术装备有限公司 | A kind of double thorax kiln ash discharge systems |
| CN109592915B (en) * | 2017-09-30 | 2024-03-01 | 山东博研粉体技术装备有限公司 | Ash discharging system of double-chamber kiln |
| CN110526596A (en) * | 2018-05-23 | 2019-12-03 | 绵竹市拱星氧化钙厂 | The mixing formula limekiln of fast cooling discharging |
| CN110526596B (en) * | 2018-05-23 | 2023-08-29 | 四川马氏窑技术发展有限公司 | Quick cooling and discharging mixed lime kiln |
| CN109186273A (en) * | 2018-12-05 | 2019-01-11 | 中冶长天国际工程有限责任公司 | A kind of limekiln hybrid heating system and its control method |
| CN110590195A (en) * | 2019-10-09 | 2019-12-20 | 新疆中泰矿冶有限公司 | Method for increasing yield and efficiency of Maerz lime kiln |
| CN110590195B (en) * | 2019-10-09 | 2022-02-01 | 新疆中泰矿冶有限公司 | Method for increasing yield and efficiency of Maerz lime kiln |
| CN111217542A (en) * | 2020-03-23 | 2020-06-02 | 南京威普粉体工程有限公司 | Sleeve shaft kiln for horizontal flow lime calcination |
| CN111217542B (en) * | 2020-03-23 | 2024-02-06 | 南京威普粉体工程有限公司 | Sleeve shaft kiln for calcining lime in advection manner |
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| CN102627418B (en) | 2013-08-21 |
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Address after: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Applicant after: Shijiazhuang Xinhua Energy and Environmental Protection Technology Co., Ltd. Address before: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Applicant before: Shijiazhuang Xinhua Industrial Furnace Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHIJIAZHUANG XINHUA INDUSTRIAL FURNACE CO., LTD. TO: SHIJIAZHUANG XINHUA ENERGY ENVIRONMENTAL TECHNOLOGY CO., LTD. |
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