CN103542714B - Many large-scale shaft furnaces of wall partition type - Google Patents
Many large-scale shaft furnaces of wall partition type Download PDFInfo
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- CN103542714B CN103542714B CN201210247350.9A CN201210247350A CN103542714B CN 103542714 B CN103542714 B CN 103542714B CN 201210247350 A CN201210247350 A CN 201210247350A CN 103542714 B CN103542714 B CN 103542714B
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Abstract
The present invention relates to a kind of Novel shaft kiln, the reaction between the chemical combination being used between solid material and decomposition reaction, solid material and gas, and the densified sintering product of solid material.This shaft furnace is to be made up of the big square tube of the some little square tubes in top and one, bottom, separates with partition wall between the little square tube in top；The big square tube in bottom has multiple discharging opening and some short partition walls.Up under the hanging beam between cylinder and under half hanging beam of both sides, multiple burner is set, makes flame fully burn at the top free space of big square tube and be fully contacted with charge bank, make material heat up and complete reaction or reach sintering.Cooling down air and burning gases and material countercurrent movement, burning gases and material Thin Film Flows effect in kiln, heat exchange is abundant, even action.Therefore the good product quality that this shaft furnace produces, running efficiency is high, and production capacity is big.It is little that this Novel shaft kiln also has investment, low cost, takes up an area few, the advantage of high efficiency.
Description
Technical field:
The present invention relates to the Industrial Stoves that solid material processes, the reaction between the chemical combination being used between solid material and decomposition reaction, solid material and gas, and the densified sintering product of solid material.
Technical background:
(1) overview of relative kiln
At present, the Industrial Stoves that can complete above-mentioned task have multiple.Such as dolomite, magnesite, calcium carbonate, clay pit, diaspore, siderite, other hydroxide and the dore furnace of salt or light-burned stove or reburner, mainly there are rotary kiln, shaft furnace, fluidized bed furnace and a tunnel cave, and simply shaft furnace therein involved in the present invention；And for example alumine ore deposit, clay pit, cement raw material, the clinkersintering stove of iron ore pellets material densified sintering product, mainly have rotary kiln, tunnel cave and shaft furnace, and the present invention is also the most relevant to shaft furnace therein.
(2) technical background of shaft furnace
Tradition shaft furnace is that cylinder type moves up and down siege, at interior filling treating material, is mainly used in the decomposition of Ore and the sintering of raw material, some burners or burner is arranged at the middle part of body of heater, material adds and cloth from top, and centre completes thermal decomposition or sintering, by bottom discharging.So, material from top to bottom slowly moves with the form of stock column, and the high-temperature gas of burning enters from middle part, moves upward, then blasts cold wind from bottom, the high-temperature material that cooling is burnt till, can be as the secondary combustion-supporting air of combustion apparatus after self is heated.It is to say, material and gas are always countercurrent movement, it is ensured that the material of turnover kiln and gas are all without taking away too many heat, and energy utilization rate height is its major advantage.
In tradition shaft furnace, material is the stock column of a close contact, and after high-temperature gas discharges at burner, the motion in shaft furnace is based on the infiltration in material.So readily permeable between stock column and furnace wall, the most overheated and burning, stock column center is then not easy infiltration and owes temperature and raw burn occur.Having artificial this burner to go deep into stock column to change this phenomenon, swash plate is installed by somebody side the most on the burner makes combustion gas and stock column have certain free turbulence space.The stock column of globality is divided into two stock material streams in the form of combustion zone bridge by Fu Kasi kiln, and installs burner in the bottom of beam, and its purpose is also for improving the quality uniformity burning till material.MAERZ kiln is then twin furnace, arranges intercommunication gas channel, a hearth combustion at middle part, and flue gas enters the preheating of another burner hearth, exchanges periodically burning and preheating burner hearth, so that calcining homogenization.Obviously, in the case of stock column is as moving integrally thing, these effects improved can only be local, and actual enforcement is also very difficult.
Summary of the invention:
The present invention is the shaft furnace of a kind of new structure, and it is mainly characterized by being made up of upper and lower different big two parts square tube, and top square tube is little, and bottom square tube is big, the little square tube in top can with two or more side by side, separate with partition wall between the little square tube of each two；Bottom square tube is an entirety, and discharging opening at least has more one than top square tube number, the vertical partition wall lower than big square tube between each two discharging opening, and the descent path of shunting material reduces the thickness of Flow of Goods and Materials layer.Burner is arranged on the top of big square tube, and up under hanging beam between cylinder and under half hanging beam of both sides, multiple burner is set, make flame fully burn at the top free space of big square tube and be fully contacted with charge bank, make material heat up and complete reaction or reach sintering.
Material is transported to top kilneye by lifting device or conveyer belt, and be stored in the feed bin of top, preheating zone is entered by dispenser, if being stopped by its division wall after freely lowering into big square tube and being divided into dried thin layer stream and contacts combustion gases, import the passage above furnace bottom discharging opening, by discharging mechanism through discharging opening kiln discharge after the cold air heat exchange with rising.Cooling wind enters the passage above discharging opening from furnace bottom, sails against the current with the material after heating, exchanges its heat, and enters combustion space and mix with flame, as secondary combustion-supporting air.High-temperature gas adverse current completely of burning enters little square tube, is preheated by material, enters exhaust gases passes through kilneye gas hood, and removing dust, harmful gas abjection enter aerial after processing.
Cooling down air and burning gases and material countercurrent movement, burning gases and material Thin Film Flows effect in kiln, heat exchange is abundant, even action.Therefore the good product quality that this shaft furnace produces, running efficiency is high, and production capacity is big.It is little that this Novel shaft kiln also has investment, low cost, takes up an area few, the advantage of high efficiency.
Accompanying drawing illustrates:
1 material
2 square tube furnace wall, tops
3 partition walls
4 hanging beams
5 half hanging beams
6 temperature thermocouples
7 burners
8 square tube furnace wall, bottoms
9 cold wind imports
10 discharge gates
11 furnace bottoms putty wall (partition wall)
Specific embodiments
The bottom of the division wall of little square tube is hanging structure, and its implementation has vault, prefabricated arched girder or flat-topped ridge, the castable refractory beam of steel structure support or combination brick beam；
There are two and half hanging beams the joint portion of the big square tube of the little square tube in top and bottom, and its implementation is same as described above, additionally can support by means of the abutment wall of big square tube；
In order to simplify structure, it is simple to the long-life in the building by laying bricks or stones and use of kiln body, before and after shaft furnace, furnace wall is preferably straight, it is not necessary to produce hanging structure；
In order to hanging structure can make material form the biggest slope in dropping process, partition wall should have enough thickness, and half hanging beam also should have enough width；
Burner under partition wall is normally on before and after's furnace wall, and make bocca be positioned at the lower edge of charge bank as far as possible, can also install from hanging beam, but burner is preferably long cigarette high combustion rate burner, the burner of half hanging beam lower space then can be installed on front-back wall, hanging beam or side wall, and the consideration of its position is to make flame contact with furnace charge along beginning at the lower of charge bank equally.
Claims (5)
1. a shaft furnace, it is characterized in that being made up of upper and lower different big two parts square tube, and top square tube is little, bottom square tube is big, top square tube is that plural multiple square tube is arranged side by side, separate with partition wall between each two square tube, bottom square tube is an entirety, and the quantity of discharging opening at least has more one than top square tube number, the vertical partition wall lower than lower square tube of furnace bottom between each two discharging opening, the material declined with the upper square tube of shunting, and reduce the thickness of Flow of Goods and Materials layer, burner is arranged below the top of cylinder, and up under hanging beam between cylinder and under half hanging beam of both sides, multiple burner is set, flame is made fully to burn at the top free space of lower square tube and be fully contacted with charge bank, make material heat up and complete reaction or reach sintering.
2. shaft furnace as claimed in claim 1, it is characterized in that hanging beam and half hanging beam side are down along being circular arc, " people " font, trapezoidal, polygon or linear, its implementation has vault, integral prefabricated, and modular tile is built by laying bricks or stones or the refractory material casting of steel structure support.
3. shaft furnace as claimed in claim 1, is characterized in that the wall that the partition wall on the furnace bottom between discharging opening is " T " font longitudinal section, and installs burner on the web both sides, upper flange bottom at " T " word wall two ends.
4. shaft furnace as claimed in claim 3, it is characterized in that the partition wall on the furnace bottom between discharging opening has adequate thickness, hole through before and after its top is provided with, the both sides in hole set aperture and connect with big square tube, there is burner flame flame inwards at the two ends in hole, and in the aperture of hole wall sprays into the material stream of big square tube.
5. shaft furnace as claimed in claim 1, is characterized in that on the vertical section of the partition wall on the furnace bottom between discharging opening, edge can be horizontal linear, " people " font, trapezoidal, polygon or circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210247350.9A CN103542714B (en) | 2012-07-13 | 2012-07-13 | Many large-scale shaft furnaces of wall partition type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210247350.9A CN103542714B (en) | 2012-07-13 | 2012-07-13 | Many large-scale shaft furnaces of wall partition type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542714A CN103542714A (en) | 2014-01-29 |
| CN103542714B true CN103542714B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210247350.9A Expired - Fee Related CN103542714B (en) | 2012-07-13 | 2012-07-13 | Many large-scale shaft furnaces of wall partition type |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076270A (en) * | 1992-03-07 | 1993-09-15 | 梅尔兹-奥芬布股份公司 | The shaft furnace that is used for sintering mineral stock |
| CN1974464A (en) * | 2005-11-29 | 2007-06-06 | 特鲁兹·弗卡斯责任有限公司 | Kiln for burning lump materials |
| CN101746969A (en) * | 2008-12-09 | 2010-06-23 | 西姆普罗盖蒂股份公司 | Lime kiln |
| CN102627418A (en) * | 2012-04-26 | 2012-08-08 | 石家庄市新华工业炉有限公司 | Compound lime kiln |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0234543A (en) * | 1988-07-22 | 1990-02-05 | Nakayama Sekkai Kogyo Kk | Method for controlling production of quick line |
| DE4236510C2 (en) * | 1992-10-26 | 1996-05-30 | Mannesmann Ag | Device for melting scrap |
-
2012
- 2012-07-13 CN CN201210247350.9A patent/CN103542714B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076270A (en) * | 1992-03-07 | 1993-09-15 | 梅尔兹-奥芬布股份公司 | The shaft furnace that is used for sintering mineral stock |
| CN1974464A (en) * | 2005-11-29 | 2007-06-06 | 特鲁兹·弗卡斯责任有限公司 | Kiln for burning lump materials |
| CN101746969A (en) * | 2008-12-09 | 2010-06-23 | 西姆普罗盖蒂股份公司 | Lime kiln |
| CN102627418A (en) * | 2012-04-26 | 2012-08-08 | 石家庄市新华工业炉有限公司 | Compound lime kiln |
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| Publication number | Publication date |
|---|---|
| CN103542714A (en) | 2014-01-29 |
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Granted publication date: 20160803 Termination date: 20180713 |