CN203382667U - Broad-spectrum lime annular kiln - Google Patents
Broad-spectrum lime annular kiln Download PDFInfo
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- CN203382667U CN203382667U CN201320525663.6U CN201320525663U CN203382667U CN 203382667 U CN203382667 U CN 203382667U CN 201320525663 U CN201320525663 U CN 201320525663U CN 203382667 U CN203382667 U CN 203382667U
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- lime
- kiln
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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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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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Abstract
The utility model discloses a broad-spectrum lime annular kiln, belonging to a lime annular kiln of which different firing temperatures and different activities can be set. The upper end of a cylindrical kiln body is provided with a flue gas exhaust port, the upper part of the kiln body is provided with a material collecting bin, the material collecting bin, a scalable feed tube and a tapered level detector constitute an automatic material supplementing device, and the kiln body is provided with a radial sampling port, a temperature measuring port, a fuel inlet, a cold air inlet and a water feeding coil. The fuel inlet is located below the sampling port and the temperature measuring port, the cold air inlet is located below the fuel inlet, the water feeding coil is located below the cold air inlet, and the lower end of the water feeding coil is provided with a discharge device. According to the utility model, the firing temperature and activity of lime can be controlled; the effect that lime is fired uniformly and thoroughly is ensured, and no underfiring, overfiring and firing-leakage phenomena occur; a fire head is stable and uniform in the process of firing; and the supplementing of raw limestone materials is decided by the discharge amount and speed of finished lime products. Automated production is easily realized, and effects of high efficiency and high quality are achieved; heat produced in the process of producing is fully used and recycled, so that the energy consumption is saved, and little flying dust is produced, thereby meeting environmental protection requirements; and the broad-spectrum lime annular kiln can be started and stopped at any time, and the quality of products is not affected.
Description
Technical field
The utility model relates to a kind ofly can set the different firing temperatures of lime and the lime annular kiln of different activities.
Background technology
Now widely used vertical lime annular kiln is compared with other limestone kiln, and output is large, energy consumption is lower, be applicable to suitability for industrialized production, but, in the process of producing, firing temperature is uncontrollable, is prone to " raw burn " and " burning " phenomenon.The content of free calcium oxide in lime and the activity of lime be all bad control also, thereby cause the quality fluctuation of lime product large, larger on downstream client's normal use impact.For this reason, the 200710115765X patent application has proposed a kind of " vertical continuous calcination lime burner ".It attempts " hot blast air-out passage " by arranging in the kiln body, and " Wingdale in the kiln body is cut apart and is tubular ", with " the assurance Wingdale is grilled thoroughly even at calcining zone "; And then by being arranged on " the some inlet and outlets " on this " hot blast air-out passage " barrel, next " make to calcine flame and penetrate the bed of material, avoid Lou burning ".Yet well-known: when wind is walked at N parallel passage, be at first to pass through from the passage of resistance minimum, after the air quantity that meets the least resistance passage, the passage of just selecting resistance to take second place passes through.Because the resistance of " hot blast air-out passage " is minimum, and the resistance in the Wingdale gap in the bed of material of preheating zone, large more than " hot blast air-out passage ", only the hot blast that cannot lead to completely " hot blast air-out passage " is being arranged, or, when " hot blast air-out passage " stops up, hot blast just can be through the Wingdale bed of material of preheating zone.Obviously, this situation is infrequently.As can be seen here: adopt the scheme of " hot blast air-out passage " and the setting " some inlet and outlets " on its barrel, be can't reach to allow Wingdale grill thoroughly, burn the even purpose of avoiding burning with Louing.
Summary of the invention
Task of the present utility model is the shortcoming that will overcome existing various vertical lime annular kilns, provides a kind of and can set and reach the different firing temperatures of lime and the wide spectrum lime annular kiln of different activities.
Task of the present utility model completes by the following technical programs: it also has the kiln body of a tubular, there is exhaust smoke outlet kiln body upper end, collecting bin is arranged at kiln body top, scalable feed-pipe and taper level detector that vertical layout is arranged under collecting bin, collecting bin and scalable feed-pipe and taper level detector form the automatic feeding device, the kiln body has thief hole radially, temperature-measuring port, fuel inlet, cold air inlet and water flowing coil pipe, fuel inlet is positioned at the below of thief hole and temperature-measuring port, cold air inlet is positioned at the fuel inlet below, the water flowing coil pipe is positioned at the cold air inlet below, there is drawing mechanism kiln body lower end.
In order to make sampling and thermometric more scientific, thief hole and temperature-measuring port vertically are respectively arranged with at least two rows along the kiln body, and every row has at least three thief holes and at least three temperature-measuring ports.
For the ease of controlling the temperature of discharging flue gas, in the upper end of kiln body, also be provided with at least two temperature-measuring ports.
In order to realize the production automation, drawing mechanism is semi-automatic drawing mechanism or full-automatic drawing mechanism.
Because the automatic feeding device is arranged at kiln body of the present utility model top, there is automatic discharge apparatus lower end, there are thief hole and temperature-measuring port in the top of fuel inlet, there are cold air inlet and water flowing coil pipe in the below of fuel inlet, thereby make kiln body of the present utility model from top to bottom, formed a wide spectrum lime annular kiln that the Automatic continuous consisted of raw material layer, preliminary heating zone, calcining layer, cooling layer and low temp. material layer is produced.It is compared with existing various limestone kilns, has the advantage of following several respects at least: one, can control firing temperature and the activity of lime; Two, can guarantee that Wingdale can grill thoroughly, burn even, not there will be raw burn, burning and leakage to burn phenomenon; Three, during burning, duration and degree of heating is stable, even; Four, in process of production, the supplementing of limestone raw material, fully by the low temp. material discharging of finished product lime the number and speed determine, easily realize automatic production, reach efficiently and high-quality; Five, the heat produced in production process is fully utilized and reclaims efficiently, greatly energy efficient; Six, the low temperature lime grog product of exporting after water-cooled, can or seldom not produce dust pollution, easily meet the requirement of environmental protection; Seven, can start shooting at any time, shut down, quality product is unaffected.
The accompanying drawing explanation
Fig. 1 is the utility model---the structural representation of wide spectrum lime annular kiln.
In figure, 1-kiln body, 2-exhaust smoke outlet, 3-collecting bin, the scalable feed-pipe of 4-, 5-taper level detector, 6-thief hole, 7-temperature-measuring port, 8-fuel inlet, 9-cold air inlet, 10-water flowing coil pipe, 11-drawing mechanism, 12-waste gas temperature-measuring port.
Embodiment
With reference to accompanying drawing, this is the schematic diagram of the wide spectrum lime annular kiln of 1.3 meters, high 14 meters of diameters building up in Liuzhou on June 18th, 2013 of the inventor.This wide spectrum lime annular kiln also has a tubular kiln body 1 longitudinally arranged.There is exhaust smoke outlet 2 kiln body 1 upper end, and kiln body 1 top is by the automatic feeding device be comprised of collecting bin 3, the scalable feed-pipe 4 of vertically arranging and taper level detector 5.Kiln body 1 middle part radially is provided with three row's thief holes 6, three row's temperature-measuring ports 7 and two row's fuel inlets 8 along kiln body 1.Every row's thief hole has three apertures.Every row's temperature-measuring port has three apertures.Every row's fuel inlet has four apertures.Like this, this wide spectrum lime annular kiln has 6,9 temperature-measuring ports 7 of 9 thief holes and 8 fuel inlets 8.Fuel inlet 8 is positioned at the below of thief hole 6 and temperature-measuring port 7.Thief hole 6 and temperature-measuring port 7 can be arranged on the same cross section of kiln body 1, also can be arranged on different cross sections.When thief hole 6 is flat, available valve or refractory mortar sealing, just open during sampling.Can place a temperature thermocouple in each temperature-measuring port.Can make like this sending into of sampling, thermometric and fuel more scientific, more evenly, have more representativeness, more can reflect the situation of calcining layer.There are cold air inlet 9 and water flowing coil pipe 10 in kiln body 1 middle and lower part, and cold air inlet 9 is positioned at fuel inlet 8 belows, and water flowing coil pipe 10 is positioned at cold air inlet 9 belows, and there is drawing mechanism 11 kiln body 1 lower end.
For the ease of controlling the temperature of discharging flue gas, in the upper end of kiln body 1, also be provided with two waste gas temperature-measuring ports 12.
The utility model is made fuel with inflammable gas, and also available coal tar powder is done fuel." duration and degree of heating " just arranges and is fixed near fuel inlet.Its calcining manners be on same cross section along even circumferential be furnished with the radial fuel entrance 8 more than three.Distance and size between two fuel inlets, determine according to the size of Wingdale.With the homogeneity that does not affect Wingdale " feed supplement ", be as the criterion.Fuel contacts and burns with go up the high-temperature hot-air come through cooling layer at the fuel inlet place, and from burning upwards, approximately the space of 6～8 meters, be the calcining layer.The calcining layer upwards, to the space of level detector 5, is preliminary heating zone.The direction that " flame " and " hot blast " that burning produces rises, with the direction that Wingdale descends, 180 spend (being reverse convection) each other." hot blast " from burning up always, all through calcining layer and preliminary heating zone.Thereby can regulate the height of preliminary heating zone by regulating the height of charge level in kiln, after the temperature of guaranteeing discharged gas fume drops to 50～60 ℃, then expel from kiln from exhaust smoke outlet 2." flame " temperature of burning drops to 60 ℃ from 1500 ℃, and the heat of its generation, except the loss of kiln body, all passed to Wingdale.Due to the time sufficiently long that " hot blast " directly contacts with Wingdale, guarantee that calcining temperature fixes (regulating with fuel and the freezing air sent into) and do not reach the principle of not discharging of firing temperature, thereby guaranteed not there will be " raw burn " and " burning " phenomenon.
At cooling layer, the utility model is first forced cooling with the oxidizer-freezing air of fuel to the lime burnt till, make again simultaneously freezing air first by the normal temperature pre-heating temperature elevation to 900 ℃ of left and right of the firing temperature that approaches lime, and then contact with fuel, violent oxidation-reduction reaction occurs, emit high heat, kill two birds with one stone: both taken full advantage of the waste heat of calcine, be convenient to again the abundant burning of fuel.The lime burnt till after air-cooled, again through the water-cooled of water flowing coil pipe 10, drop to the low temperature of 50-60 ℃, and the cold water in water flowing coil pipe 10 has but become steam or hot water, can use it for anything else.This not only can take full advantage of the waste heat of calcine, can reduce again the impact of the high temperature of calcine on environment, more is conducive to environmental protection.Also kiln body and drawing mechanism be can avoid, erosion and the damage of calcine high temperature are subject to.Greatly improve work-ing life and the maintenance cycle of equipment.
Collecting bin 3 and scalable feed-pipe 4 and the taper level detector 5 vertically arranged are linked in sequence.3 li of collecting bins are equipped with a considerable amount of Wingdales.Wingdale in collecting bin 3, through scalable feed-pipe 4, drop on taper level detector 5.The conical surface of taper level detector 5, and the gap between scalable feed-pipe 4 lower surfaces floats, and they can be more approaching, and Wingdale can't be passed through; Also can separate far, allow Wingdale pass through smoothly.
Number and the speed of the utility model charging, controlled by number and the speed of discharging.The drawing mechanism 11 of kiln body 1 lower end goes out how much lime, and the automatic feeding device of kiln body 1 upper end just supplements the Wingdale of respective numbers automatically.Without power, not employment operation, completed automatically by device entirely.Principle and the process of its work are: when the charge level in kiln is highly identical with the lower edge of level detector 5, due to the holder power that is subject to charge level in kiln, Wingdale on level detector 5 stops falling, blocked the gap (being the outlet of Wingdale) between scalable feed-pipe 4 and level detector 5 conical surfaces, whole blanking action is stopped; When the lime kiln discharge that burns till bottom, in kiln, charge level can descend automatically, and the Wingdale on level detector 5 loses the holder power of charge level in kiln, also can automatically fall.In order to fill up the room that falls to producing, the Wingdale in scalable feed-pipe 4 can be fallen on level detector 5 and enter in kiln, and the Wingdale in collecting bin 3 can enter in scalable feed-pipe 4, so goes round and begins again and carries out intermittently.As long as in collecting bin 3, Wingdale is arranged, just energy automatic feed, supply the material level produced due to discharging poor.The setting of scalable feed-pipe 4, within temperature in order to guarantee discharged gas fume remains at the scope of design: when the excess Temperature of discharged gas fume, thermal waste increases, scalable feed-pipe 4 can be shortened, to on level detector 5, carry, make the preliminary heating zone proper extension, thereby reduce the temperature of discharged gas fume; When the temperature of discharged gas fume is too low, can level detector 5 be transferred in scalable feed-pipe 4 elongations, preliminary heating zone is suitably shortened.
Contriver of the present utility model on June 18th, 2013, carried out immediately test for the first time: the firing temperature of test was set as 950 ℃ after 1.3 meters of diameters, the wide spectrum lime annular kiln of high 14 meters are built up in Liuzhou.Dry kiln to going out finished product lime from igniting, only use 24 hours.Per hour burn 50 kilograms, the bituminous coal of 6500 kilocalories while drying kiln, when a calcining layer temperature topmost reaches 850 ℃, calcining layer temperature bottom and reaches 950 ℃, start product, to the per hour coal consumption of 50 kilograms simultaneously, bring up to per hour 200 kilograms, when strengthening burning coal amount, also strengthen wind supply quantity, to guarantee the homeostasis of firing temperature.Per hour burning under the working condition that 200 kilograms, 6500 kilocalorie bituminous coal, firing temperature are 950 ℃; produced continuously 120 hours (not containing drying the kiln time); 264 tons of unslaked lime products, on average per hour 2.2 tons of active good unslaked limes, then shutdown, censorship.Assay is: the efficient oxidation calcium of this unslaked lime product reaches 93%, without " raw burn " and " burning " composition.
After obtaining above-mentioned detected result, carried out again test for the second time: the contriver is by the firing temperature of setting, bring up to 1100 ℃ by original 950 ℃, drawing mechanism first stops during intensification, still by the burning coal speed coal that per hour burns 200 kilograms, 6500 kilocalorie bituminous coal, air feed, when the calcining layer temperature that the thermopair of temperature-measuring port shows bottom is 1100 ℃, start slowly to go out product, the temperature that now this thermopair shows is still raising, when reaching 1150 ℃, accelerate the speed of product, until the temperature-stable that this thermopair shows is between 1090～1120 ℃ the time, fix out the speed of product.Now, per hour mean yield is 2.1 tons.Product is after testing: its efficient oxidation calcium is constant, still be 93%, actively becomes 8～10 minutes by original 1～2 minute, and activity descends to some extent.Visible: wide spectrum lime annular kiln of the present utility model, can set as requested different firing temperatures and Product Activity; Can shut down at any time, start shooting; Can add and subtract firepower and not there will be " raw burn " and " burning " phenomenon; Waste heat can rationally utilize, and reaches the requirement of energy-saving and environmental protection.
Claims (4)
1. a wide spectrum lime annular kiln, it also has the kiln body (1) of a tubular, there is exhaust smoke outlet (2) kiln body (1) upper end, collecting bin (3) is arranged at kiln body (1) top, it is characterized in that: scalable feed-pipe (4) and taper level detector (5) that vertical layout is arranged under collecting bin (3), collecting bin (3) forms the automatic feeding device with scalable feed-pipe (4) and taper level detector (5), kiln body (1) has thief hole (6) radially, temperature-measuring port (7), fuel inlet (8), cold air inlet (9) and water flowing coil pipe (10), fuel inlet (8) is positioned at the below of thief hole (6) and temperature-measuring port (7), cold air inlet (9) is positioned at fuel inlet (8) below, water flowing coil pipe (10) is positioned at cold air inlet (9) below, there is drawing mechanism (11) kiln body (1) lower end.
2. by a kind of wide spectrum lime annular kiln claimed in claim 1, it is characterized in that: thief hole (6) and temperature-measuring port (7) vertically are respectively arranged with at least two rows along kiln body (1), and every row has at least three thief holes (6) and at least three temperature-measuring ports (7).
3. by the described a kind of wide spectrum lime annular kiln of claim 1 or 2, it is characterized in that: in the upper end of kiln body (1), also be provided with at least two waste gas temperature-measuring ports (12).
4. by the described a kind of wide spectrum lime annular kiln of claim 1 or 2, it is characterized in that: drawing mechanism (11) is semi-automatic drawing mechanism or full-automatic drawing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525663.6U CN203382667U (en) | 2013-08-16 | 2013-08-16 | Broad-spectrum lime annular kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525663.6U CN203382667U (en) | 2013-08-16 | 2013-08-16 | Broad-spectrum lime annular kiln |
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| Publication Number | Publication Date |
|---|---|
| CN203382667U true CN203382667U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320525663.6U Expired - Fee Related CN203382667U (en) | 2013-08-16 | 2013-08-16 | Broad-spectrum lime annular kiln |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495509A (en) * | 2016-11-02 | 2017-03-15 | 赵升智 | Radial canal limestone shaft furnace |
| CN106702157A (en) * | 2015-08-01 | 2017-05-24 | 江学艺 | Reduction treatment method and reduction treatment furnace for metal ore |
-
2013
- 2013-08-16 CN CN201320525663.6U patent/CN203382667U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702157A (en) * | 2015-08-01 | 2017-05-24 | 江学艺 | Reduction treatment method and reduction treatment furnace for metal ore |
| CN106495509A (en) * | 2016-11-02 | 2017-03-15 | 赵升智 | Radial canal limestone shaft furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20180816 |