CN101857383A - Beam limekiln - Google Patents
Beam limekiln Download PDFInfo
- Publication number
- CN101857383A CN101857383A CN201010210446A CN201010210446A CN101857383A CN 101857383 A CN101857383 A CN 101857383A CN 201010210446 A CN201010210446 A CN 201010210446A CN 201010210446 A CN201010210446 A CN 201010210446A CN 101857383 A CN101857383 A CN 101857383A
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- burning
- thermal oil
- cooling
- air
- water cooler
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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
Abstract
The invention provides a beam limekiln, which mainly comprises a kiln body, a burning system, a discharging system, an air supply system and a control system, wherein a cooling belt of the kiln body is provided with an upper layer of burning beams and a lower layer of burning beams, and the burning beam is provided with a cooling system; and the cooling system comprises a cavity between a beam body and an outer wall, a connecting pipeline, a conducting oil circulating pump and a conducting oil cooler, and the conducting oil cooler comprises an oil way and an air pipeline. The conducting oil cooler is connected with a preheating air pipeline or a fuel gas pipeline or a cooling air pipeline of the cooling belt, and exchanges heat with hot combustion air or fuel gas or cooling air so as to recover heat discharged by cooling the conducting oil of the burning beam, thereby saving energy, reducing energy consumption and production cost and improving economic efficiency. The invention has reasonable flow and more optimized production operation.
Description
Technical field
The invention belongs to building materials, chemical machinery technical field, relate to a kind of kiln of calcining materials, be specifically related to a kind of improvement of beam-type limekiln.
Background technology
With the beam-type limekiln calcined limestone is the new technology that lime is produced.Beam-type limekiln has advantages such as energy consumption is low, the lime product quality is good, throughput is strong, turndown ratio is big, is widely used in the lime production of purposes such as metallurgy, chemical industry.Burning beam is the nucleus equipment of beam-type limekiln, and the beam body of burning beam is provided with burner, fuel conduit and combustion air pipeline.By fuel conduit and combustion-aid air pipe road direction burner transfer the fuel and combustion air, burner uniform distribution fuel also burns, and burning beam is worked under the high temperature of 1200～1500 ℃ of calcining zones, burns out the beam body easily, influences the long period safety in production.
The applicant's number of patent application is 200320111077.3, and the utility model patent that name is called " interior external heating type limestone kiln " provides the technical scheme and the burning beam refrigerative technical scheme of burning beam-type limekiln.Another part application number of the applicant is 200820078007.5, the utility model patent that name is called " a kind of kiln of lime calcining " has also disclosed burning beam refrigerative technical scheme, this scheme " burns out beam body and the intravital facility of beam for avoiding high temperature, is provided with the cavity of heat-eliminating medium circulation in the beam body of upper and lower layer burning beam and following suction bar ".Above-mentioned patented technology has solved burning beam cooling problem, avoid burning out facility in beam body and the beam body, circulation is cooled off but the beam body uses thermal oil, the thermal oil that comes out from the beam body returns burning beam by heat-condutive oil heat exchanger after by air cooling, the heat of cooling combustion beam can not be recycled, cause energy dissipation, increased the lime production cost.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of beam-type limekiln, make full use of the waste heat behind the thermal oil cooling combustion beam, make Production Flow Chart more reasonable, save the energy, reduce production costs, increase economic efficiency.
Beam-type limekiln provided by the invention mainly comprises kiln body, feeder system, firing system, discharge system, air feed system and Controlling System.The kiln body comprises opening for feed, preheating zone, calcining zone, cooling zone and discharge port.Described calcining zone is equipped with upper and lower two-layer burning beam, is provided with fuel conduit and air passageways in the beam body, and fuel conduit is connected to burner.Burning beam is provided with the burning beam cooling system, and cooling system comprises cavity, connecting pipeline, thermal oil recycle pump and the thermal oil water cooler between beam body and the outer wall, and the thermal oil water cooler has oil circuit and airline.Combustion air is connected to burning beam combustion air inlet through the thermal oil water cooler, or gas line is connected to the fuel gas inlet of burning beam through the thermal oil water cooler, or cooling blower is connected to cooling air inlet on the cooling zone through the thermal oil water cooler, and described connecting pipeline and thermal oil water cooler outer wall are surrounded by thermal insulation layer.
The calcining zone upper strata is provided with 2～6 burning beams 5, and lower floor establishes 1～4 burning beam.The thermal oil outlet of each layer burning beam and thermal oil inlet connect together respectively and are communicated with the thermal oil recycle system.
The top of preheating zone is provided with suction bar, and last suction bar is 1～4.The middle part of cooling zone is provided with down suction bar, and following suction bar is 1～4.Last suction bar is connected with exhaust emission system through flue gas/combustion gas interchanger, or is connected with exhaust emission system with flue gas/combustion gas interchanger through flue gas/air heat exchanger respectively.Exhaust emission system comprises fly-ash separator, induced draft fan and chimney.As selection, combustion air can lead to burning beam combustion air inlet through thermal oil water cooler and flue gas/air heat exchanger successively.
Burning beam is rectangle burning beam or T-shape burning beam, and described burner is located at the both sides or the bottom of burning beam.The fuel conduit of burning beam is box-shaped body or tubular body arranged inside structure, and air passageways is the box-shaped body structure, and fuel conduit passes through from air passageways.
As selection, be provided with 2～40 tubular body arranged inside fuel conduits in the burning beam body, the corresponding burner of every road fuel tube.Burner is the combination of geseous fuel burner, liquid fuel burner, solid fuel burner or above-mentioned burner.
Compared with prior art, thermal oil water cooler of the present invention and combustion air pipeline or gas line or cooling zone cooling air pipeline are connected, by burning beam thermal oil cooling liberated heat being reclaimed with combustion air or combustion gas or cooling air heat exchange, saved the energy, make every production 1kg lime energy expenditure reduce to 4300kj by 4800kj, reduce energy consumption and production cost, improved economic benefit.Flow process of the present invention is reasonable, and production operation is more optimized.
Description of drawings
Fig. 1 is the schematic flow sheet of beam-type limekiln of the present invention;
Fig. 2 is the schematic flow sheet of another program beam-type limekiln of the present invention;
Fig. 3 is the schematic flow sheet of third party's case beam-type limekiln of the present invention.
Wherein:
1-hopper, the last suction bar of 2-, 3-preheating zone, 4-calcining zone, 5-burning beam, 6-cooling zone, the last cooling air intake of 7-, 8-cooling air intake, 9-discharge port, 10-flue gas/combustion gas interchanger, 11-fly-ash separator, 12-induced draft fan, 13-chimney, the outlet of 14-thermal oil, 15-thermal oil inlet, 16-thermal oil recycle pump, 17-thermal oil water cooler, 18-valve, 19-cooling blower, 20-flue gas/air heat exchanger, 21-kiln body.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
Embodiment 1
Beam-type limekiln of the present invention mainly comprises kiln body 21, feeder system, firing system, discharge system, air feed system and Controlling System as shown in Figure 1.The kiln body comprises opening for feed, preheating zone 3, calcining zone 4, cooling zone 6 and discharge port.The top of preheating zone is provided with two suction bars 2.Calcining zone 4 is equipped with upper and lower two-layer burning beam 5, and the upper strata is provided with 3 burning beams 5, and lower floor establishes 2 burning beams, and burning beam is the T-shape burning beam.Be provided with fuel conduit and air passageways in the beam body, fuel conduit and air passageways are box-shaped body, and fuel conduit passes through in air passageways.Fuel conduit is connected to burner, and burner is the geseous fuel burner, and burner is located at the both sides of burning beam, 10 burners of every side.Be provided with the cavity of thermal oil circulation between beam body and the outer wall, the thermal oil outlet 14 of each layer burning beam and thermal oil inlet 15 connect together respectively and are communicated with the thermal oil recycle system.The thermal oil recycle system comprises connecting pipeline, thermal oil recycle pump 16 and thermal oil water cooler 17, and the thermal oil water cooler has oil circuit and airline.Gas blower leads to burning beam combustion air inlet through the air of thermal oil water cooler, and gas line is connected to the fuel gas inlet of burning beam by flue gas/combustion gas interchanger.Connecting pipeline and thermal oil water cooler outer wall are surrounded by thermal insulation layer.Cooling blower 19 is connected to cooling zone cooling air intake 8.Last suction bar is connected to exhaust emission system through flue gas/combustion gas interchanger 10 and connects, and exhaust emission system comprises fly-ash separator 11, induced draft fan 12 and chimney 13.
The process of beam-type limekiln calcining materials is, limestone material is delivered to hopper 2 by feed machinery, drops down onto preheating zone 3 by hopper through bell, by the high-temperature flue gas that rises from calcining zone Wingdale carried out preheating, and the material after the preheating goes downwards to calcining zone 4.Burn by the combustion gas and the combustion air mixing of the ejection of two row's burning beams, 5 burners at calcining zone, calcined limestone, the lime after the calcining goes downwards to cooling zone 6.At cooling zone, cooling air is entered cooling zone through cooling air intake 8 and from bottom to top lime is cooled off by cooling blower 19 air blast, and cooled lime product is through discharge port 9 kiln discharges, through discharging equipment to the product storehouse.Thermal oil is emitted heat warm-up combustion-supporting air through thermal oil recycle pump 16 to thermal oil water cooler 17, thermal oil water cooler from burning beam thermal oil outlet 14, thermal oil after the cooling circulates in this way through burning beam thermal oil inlet 15 cavitys that enter in the burning beam.Extract flue gas out from last suction bar 2 and heat is passed to combustion gas after discharge to exhaust emission system through flue gas/combustion gas interchanger.
Another embodiment of the present invention as described in Figure 2, the cooling zone of described beam-type limekiln is provided with two cooling air intakes, i.e. cooling air gas inlet 8 and last cooling air intake 7.Cooling blower 19 is divided into two-way, and one the road is connected to cooling air intake 8, and another path thermal oil water cooler is connected to cooling air intake 7.Connecting pipeline is provided with valve 18, is used to regulate the air quantity that enters the thermal oil water cooler.2 outlets of last suction bar are divided into two-way, and one the tunnel is connected to exhaust emission system through flue gas/combustion gas interchanger 10, and one the tunnel is connected to exhaust emission system through flue gas/air heat exchanger.The present embodiment is brought heat in the kiln body into by cooling air at the bottom of the kiln with thermal oil and the cooling air heat exchange that enters cooling zone, and gas to preheating zone preheating limestone material, reclaims the heat that thermal oil is taken out of with this kind mode behind calcining zone.
Claims (10)
1. beam-type limekiln, mainly comprise kiln body, feeder system, firing system, discharge system, air feed system and Controlling System, the kiln body comprises opening for feed, preheating zone, calcining zone, cooling zone and discharge port, described calcining zone (4) is equipped with upper and lower two-layer burning beam (5), be provided with fuel conduit and air passageways in the beam body, fuel conduit is connected to burner; Burning beam is provided with the burning beam cooling system, cooling system comprises the cavity between beam body and the outer wall, connecting pipeline, thermal oil recycle pump (16) and thermal oil water cooler (17), the thermal oil water cooler is made up of oil circuit and airline, it is characterized in that: airline is connected to burning beam combustion air inlet by gas blower through thermal oil water cooler and flue gas heat exchange device, or gas line is connected to the fuel gas inlet of burning beam through thermal oil water cooler and flue gas heat exchange device, or cooling blower (19) pipeline is connected to cooling air intake on the cooling zone (7) through the thermal oil water cooler, and described connecting pipeline and thermal oil water cooler outer wall are surrounded by thermal insulation layer.
2. beam-type limekiln according to claim 1 is characterized in that: described calcining zone upper strata is provided with 2～6 burning beams (5), and lower floor establishes 1～4 burning beam; The thermal oil outlet (14) of each layer burning beam and thermal oil inlet (15) connect together respectively and are communicated with the thermal oil recycle system.
3. beam-type limekiln according to claim 1 is characterized in that: the top of described preheating zone is provided with suction bar (2), and described upward suction bar is 1～4.
4. beam-type limekiln according to claim 3 is characterized in that: suction bar can be set in the middle part of described cooling zone, and described suction bar down is 1～4.
5. beam-type limekiln according to claim 3, it is characterized in that: the described suction bar of going up is connected with exhaust emission system through flue gas/combustion gas interchanger (10), or be connected with exhaust emission system with flue gas/combustion gas interchanger (10) through flue gas/air heat exchanger (20) respectively, described exhaust emission system comprises fly-ash separator (11), induced draft fan (12) and chimney (13).
6. beam-type limekiln according to claim 5, it is characterized in that: combustion air passes to burning beam combustion air inlet by gas blower through thermal oil water cooler (17), flue gas/air heat exchanger (20), or gas line passes to the combustion-supporting fuel gas inlet of burning beam through thermal oil water cooler (17), combustion gas/air heat exchanger (10).
7. beam-type limekiln according to claim 1 is characterized in that: described burning beam is rectangle burning beam or T-shape burning beam, and described burner is located at the both sides and/or the bottom of burning beam.
8. beam-type limekiln according to claim 1 is characterized in that: the fuel conduit of described burning beam is box-shaped body or tubular body arranged inside structure, and air passageways is the box-shaped body structure, and fuel conduit passes through from air passageways.
9. beam-type limekiln according to claim 8 is characterized in that: be provided with 2～40 tubular body arranged inside fuel conduits in the described burning beam body, the corresponding burner of every road fuel tube.
10. beam-type limekiln according to claim 1 is characterized in that: described burner is the combination of geseous fuel burner, liquid fuel burner, solid fuel burner or above-mentioned burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102104469A CN101857383B (en) | 2010-06-28 | 2010-06-28 | Beam limekiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102104469A CN101857383B (en) | 2010-06-28 | 2010-06-28 | Beam limekiln |
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| CN101857383A true CN101857383A (en) | 2010-10-13 |
| CN101857383B CN101857383B (en) | 2012-04-18 |
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| CN2010102104469A Active CN101857383B (en) | 2010-06-28 | 2010-06-28 | Beam limekiln |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001837A (en) * | 2010-10-14 | 2011-04-06 | 贾会平 | Method and device for calcining materials by using low calorific value fuel |
| CN102155846A (en) * | 2011-04-27 | 2011-08-17 | 许广春 | Lime roasting shaft kiln |
| CN102351442A (en) * | 2011-07-22 | 2012-02-15 | 石家庄市新华工业炉有限公司 | Method for material calcination and limekiln device |
| CN102353273A (en) * | 2011-07-22 | 2012-02-15 | 石家庄市新华工业炉有限公司 | Method and device for using low temperature heat of lime kiln |
| CN102384680A (en) * | 2011-10-25 | 2012-03-21 | 上海和衡能源科技发展有限公司 | Device for recovering and utilizing waste heat generated by smoke discharging in split type heating medium circulating way |
| CN102992660A (en) * | 2012-12-25 | 2013-03-27 | 石家庄新华能源环保科技股份有限公司 | Low-heat value fuel lime kiln |
| CN102992661A (en) * | 2012-12-25 | 2013-03-27 | 石家庄新华能源环保科技股份有限公司 | Beam type heat storage lime kiln |
| CN103043930A (en) * | 2012-12-19 | 2013-04-17 | 西安瑞驰节能工程有限责任公司 | Method and equipment for producing cement and gathering CO2 by utilizing closed ring-shaped calcination furnace |
| CN103043925A (en) * | 2012-12-21 | 2013-04-17 | 张克海 | Lime kiln with heat energy recovery system |
| CN103708744A (en) * | 2013-12-31 | 2014-04-09 | 石家庄新华能源环保科技股份有限公司 | Low-heat value gas heat accumulating type lime kiln |
| CN103922616A (en) * | 2014-03-14 | 2014-07-16 | 石家庄奋进科技有限公司 | Steel-refractory material composite heat insulation type combustion beam |
| CN104058604A (en) * | 2013-03-20 | 2014-09-24 | 佘园园 | Multi-fuel ring beam type lime kiln |
| CN106186739A (en) * | 2015-05-05 | 2016-12-07 | 武汉艾蒙窑炉技术有限公司 | There is the bulk material roasting shaft kiln of arched girder |
| CN108751757A (en) * | 2018-06-01 | 2018-11-06 | 潞城市泰山石膏建材有限公司 | A kind of gypsum calcining energy-saving and emission-reduction method |
| CN109574523A (en) * | 2018-12-25 | 2019-04-05 | 石家庄新华能源环保科技股份有限公司 | A kind of limekiln that the hot sending of gasification furnace coal gas of high temperature is directly burnt |
| CN110903042A (en) * | 2019-12-17 | 2020-03-24 | 石家庄新华能源环保科技股份有限公司 | Double-hearth lime kiln with denitration equipment |
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| JPS61127650A (en) * | 1984-11-21 | 1986-06-14 | エフ エル スミス アンド コムパニ− エ− エス | Method and apparatus for cooling white cement clinker |
| CN2656405Y (en) * | 2003-10-20 | 2004-11-17 | 贾会平 | Internal-external heating lime furnace |
| CN101195520A (en) * | 2007-12-19 | 2008-06-11 | 黄官禹 | Vertical continuous calcination lime burner |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001837A (en) * | 2010-10-14 | 2011-04-06 | 贾会平 | Method and device for calcining materials by using low calorific value fuel |
| CN102155846A (en) * | 2011-04-27 | 2011-08-17 | 许广春 | Lime roasting shaft kiln |
| CN102155846B (en) * | 2011-04-27 | 2012-08-08 | 许广春 | Lime roasting shaft kiln |
| CN102351442A (en) * | 2011-07-22 | 2012-02-15 | 石家庄市新华工业炉有限公司 | Method for material calcination and limekiln device |
| CN102353273A (en) * | 2011-07-22 | 2012-02-15 | 石家庄市新华工业炉有限公司 | Method and device for using low temperature heat of lime kiln |
| CN102351442B (en) * | 2011-07-22 | 2013-06-19 | 石家庄新华能源环保科技股份有限公司 | Method for material calcination and limekiln device |
| CN102384680A (en) * | 2011-10-25 | 2012-03-21 | 上海和衡能源科技发展有限公司 | Device for recovering and utilizing waste heat generated by smoke discharging in split type heating medium circulating way |
| CN103043930A (en) * | 2012-12-19 | 2013-04-17 | 西安瑞驰节能工程有限责任公司 | Method and equipment for producing cement and gathering CO2 by utilizing closed ring-shaped calcination furnace |
| CN103043925A (en) * | 2012-12-21 | 2013-04-17 | 张克海 | Lime kiln with heat energy recovery system |
| CN103043925B (en) * | 2012-12-21 | 2014-03-26 | 张克海 | Lime kiln with heat energy recovery system |
| CN102992661A (en) * | 2012-12-25 | 2013-03-27 | 石家庄新华能源环保科技股份有限公司 | Beam type heat storage lime kiln |
| CN102992660A (en) * | 2012-12-25 | 2013-03-27 | 石家庄新华能源环保科技股份有限公司 | Low-heat value fuel lime kiln |
| CN102992661B (en) * | 2012-12-25 | 2014-05-21 | 石家庄新华能源环保科技股份有限公司 | Beam type heat storage lime kiln |
| CN102992660B (en) * | 2012-12-25 | 2014-05-21 | 石家庄新华能源环保科技股份有限公司 | Low-heat value fuel lime kiln |
| CN104058604A (en) * | 2013-03-20 | 2014-09-24 | 佘园园 | Multi-fuel ring beam type lime kiln |
| CN103708744A (en) * | 2013-12-31 | 2014-04-09 | 石家庄新华能源环保科技股份有限公司 | Low-heat value gas heat accumulating type lime kiln |
| CN103708744B (en) * | 2013-12-31 | 2016-04-06 | 石家庄新华能源环保科技股份有限公司 | Low-heat value gas thermal storage type limestone kiln |
| CN103922616A (en) * | 2014-03-14 | 2014-07-16 | 石家庄奋进科技有限公司 | Steel-refractory material composite heat insulation type combustion beam |
| CN103922616B (en) * | 2014-03-14 | 2015-09-09 | 石家庄奋进科技有限公司 | A kind of steel and refractory materials composite adiabatic formula burning beam |
| CN106186739A (en) * | 2015-05-05 | 2016-12-07 | 武汉艾蒙窑炉技术有限公司 | There is the bulk material roasting shaft kiln of arched girder |
| CN106186739B (en) * | 2015-05-05 | 2018-05-22 | 武汉艾蒙窑炉技术有限公司 | Bulk material roasting shaft kiln with arched girder |
| CN108751757A (en) * | 2018-06-01 | 2018-11-06 | 潞城市泰山石膏建材有限公司 | A kind of gypsum calcining energy-saving and emission-reduction method |
| CN109574523A (en) * | 2018-12-25 | 2019-04-05 | 石家庄新华能源环保科技股份有限公司 | A kind of limekiln that the hot sending of gasification furnace coal gas of high temperature is directly burnt |
| CN109574523B (en) * | 2018-12-25 | 2024-04-16 | 石家庄新华能源环保科技股份有限公司 | Lime kiln for directly burning high-temperature coal gas of gasification furnace in hot feeding manner |
| CN110903042A (en) * | 2019-12-17 | 2020-03-24 | 石家庄新华能源环保科技股份有限公司 | Double-hearth lime kiln with denitration equipment |
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| CN101857383B (en) | 2012-04-18 |
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Effective date of registration: 20130114 Address after: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Patentee after: Shijiazhuang Xinhua Energy and Environmental Protection Technology Co., Ltd. Address before: 050091 Hebei city of Shijiazhuang Province in the South Street Garden Xucheng No. 2461 Patentee before: Jia Huiping |