CN202089901U - Rotating bed equipment - Google Patents
Rotating bed equipment Download PDFInfo
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- CN202089901U CN202089901U CN2010206590902U CN201020659090U CN202089901U CN 202089901 U CN202089901 U CN 202089901U CN 2010206590902 U CN2010206590902 U CN 2010206590902U CN 201020659090 U CN201020659090 U CN 201020659090U CN 202089901 U CN202089901 U CN 202089901U
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Abstract
The utility model relates to a rotating bed equipment, which comprises an ore preheater (3), a distributor (5), a vibrating screen (6), a rotating bed (12) and a cooling system; the ore preheater (3) is connected with the distributor (5), and the distributor (5) is connected with the rotating bed (12) through the vibrating screen (6) from top to bottom; the rotating bed (12) is connected with the cooling system. Layered distribution of limestone of different sizes and granularities is realized so as to effectively prevent problems of over-burning and under-burning. The under-burning rate is smaller than 0.5% and the activity of limestone is improved to 380-400ml. With application of rotating bed technology, the powder amount of lime products is reduced from 12-30% of conventional equipment to 1.0-3.0%, and the daily output is up to 1000-3000 tons, thereby realizing the high efficiency and high quality in limestone production. High temperature waste gas produced by the rotating bed is used for preheating the limestone and high temperature heat of the limestone is used for preheating combustion air so that heat of the system is utilized efficiently and comprehensively. The utility model has the advantages of low comprehensive energy consumption, low production cost and remarkable economic benefit and social benefit.
Description
Technical field
A kind of rotating bed equipment of the utility model relates in particular to a kind of equipment that rotates height of bed activity lime.
Background technology
Lime is widely used in industrial circles such as ferrous metallurgy, nonferrous metallurgy, calcium carbide production, chemical industry, to the higher specification of quality of the continuous proposition of the quality of lime.The technology of lime production at present and equipment mainly contain telescopic shaft furnace, chain grate machine rotary kiln and flow the two thorax shaft furnaces of heat accumulating type, two D kiln, beam type burner shaft furnace, suspension kiln, CID kiln or the like.Chinese patent application 200810017556.6 discloses a kind of raw material of production high-quality calcium carbide, large-scale energy-saving gas burning kiln of high-quality lime of being used for, and adopts a kind of pallet car type elongated horizontal kiln.Chinese patent application 200910086155.0 discloses a kind of sintering technology of quickened lime, adopts multistage cyclone pre-heating system, decomposing furnace and multistage cyclone water cooler in interior preheating---and the suspension calcining device is used to produce lime powder.Chinese patent application 200710054579.X discloses a kind of stepped active lime shaft kiln and calcining process thereof, stops 3-5 hour at 700～800 ℃, stops 2-3 hour under 1250～1300 ℃ of temperature, and production efficiency is low.Chinese patent application 200810231028.0 discloses a kind of closed type calcium carbide furnace tail gas and has carried out the method for active lime calcination as rotary kiln with fuel, is the calcium carbide stove exhaust behind the cooling and purifying and coke powder or coal dust are sent into rotary kiln.Chinese patent application 201010232611.0 discloses a kind of active lime production plant, and relating to a kind of is the active lime production plant of fuel turnaround kiln with the coal dust.Chinese patent application 200420087429.0 discloses a kind of active lime shaft kiln equipment that utilizes coke.Chinese patent application 200420120497.2 discloses a kind of gas and has burnt active lime shaft kiln equipment.
There is following defective in existing kiln: (1) can't realize little in the same stove of large size Wingdale fire, quality is inhomogeneous.(2) lime is given birth to burning rate 3～14%, can't produce birth burning rate less than the industrial lime of 1% high quality, lime activity 270～380ml, and quality fluctuation is big.(3) the lime product powder is up to 12～30%.(4) day output has only 300～1000 tons, and maximum day output has only 1000 tons, can't realize more scale operation, and production efficiency is low, comprehensive energy consumption is high.
Summary of the invention
At the deficiencies in the prior art, the utility model proposes a kind of rotating bed equipment, solved in the present lime production to give birth to and burnt or burning is difficult to control, the fluctuation of lime activity is big, production efficiency is low, percentage of damage is high, lime powder art content height, the comprehensive high problem of finished product energy consumption, produce 1000～3000 tons in high activity lime a set of equipment day, give birth to the burning rate less than 0.5%, activity 380～400ml, the powder art is less than 3.0%.
One one kinds of rotating bed equipment comprise ore preheater (3), distributor (5), vibratory screening apparatus (6), rotating bed (12) and cooling system; Ore preheater (3) links to each other with distributor (5), and distributor (5) links to each other with rotating bed (12) from top to bottom through vibratory screening apparatus (6); Rotating bed (12) links to each other with cooling system.
Preferably, described rotating bed equipment also comprises charging equipment.Charging equipment links to each other with ore preheater (3), and is ore preheater (3) convey materials.The preferred rotary conveyor of described charging equipment (1), or equipment such as chapelet.
Preferably, described rotating bed equipment also comprises ore storage bunker (2), and ore storage bunker (2) is positioned at ore preheater (3) top and is connected with ore preheater (3); The material that charging equipment is carried enters ore preheater (3) through ore storage bunker (2).
Preferably, described rotating bed equipment also comprises the lime cooling system, waste gas dedusting system, gas burning system.
Preferably, described rotating bed (12) is made up of cloth district (7), heating zone (8), high-temperature zone (9), soaking zone (10) and discharge zone (11).Cloth district (7), heating zone (8), high-temperature zone (9), soaking zone (10) and discharge zone (11) join end to end successively.Vibratory screening apparatus (6) is installed in the top of cloth district (7).
Preferably, rotating bed (12) bed surface is made up of refractory materials, and refractory materials divides three layers, and the bottom is that light fire brick, middle part are that clay brick, upper surface are high alumina bricks.
Preferably, described rotating bed equipment also comprises high-temperature flue gas pipeline (4), and high-temperature flue gas pipeline (4) two ends link to each other with the soaking zone (10) of ore preheater (3) and rotating bed (12) respectively.
Preferably, described cooling system comprises: discharging machine (13), water cooler (14), air preheater (15), combustion air pipeline (16), burner blower (17), exhaust pipeline (18).Discharging machine (13) is installed on rotating bed (12) bed surface, and the discharge end of discharging machine (13) links to each other with the upper end of water cooler (14); One end of air preheater (15) links to each other with water cooler (14) top by pipeline, the hot gas introducing air preheater (15) in the water cooler (14), air preheater (15) the other end links to each other with flue (19) by exhaust pipeline (18), and waste gas is taken away; Burner blower (17) links to each other with air preheater (15) freezing air is sent into air preheater (15) preheating, and combustion air pipeline (16) two ends link to each other with rotating bed (12) with air preheater (15) respectively, and preheated air is sent into rotating bed (12).
Preferably, described discharging machine is a water-cooled push rod discharging machine, or the water-cooling spiral discharging machine.Preferred described water cooler (14) is a shaft cooler, or chain grate formula water cooler.Preferred air preheater (15) is a tubular air preheater, or the Clothoid type air preheater.
Preferably, described waste gas dedusting system comprises: exhaust pipeline (18), flue (19), fly-ash separator (20), dedusting fan (21) and smoke discharging pipe (22).Exhaust pipeline (18) is connected with flue (19), and flue (19) two ends link to each other with ore preheater (3) with fly-ash separator (20) respectively, and dedusting fan (21) two ends link to each other with smoke discharging pipe (22) with fly-ash separator (20) respectively.
Preferably, described gas burning system comprises: gas pipeline (23) and fuel cartridge (24).Fuel cartridge (24) through gas pipeline (23) and rotating bed (12) with link to each other, be rotating bed supply combustion gas.
Described rotating bed equipment can be used for producing high activity lime, also can be used for light dolomite.
Advantage of the present utility model is embodied in:
(1) realized little, in, the layer-by-layer distribution of different size granularity Wingdale, effectively prevented the burning of small size Wingdale, and the large size Wingdale is given birth to the problem of burning and is taken place, and gives birth to the burning rate less than 0.5%, makes the activity of lime bring up to 380～400ml.
(2) the rotating bed The Application of Technology makes lime product powder art rate drop to 1～3.0% by 12～30% of conventional equipment, and day output reaches 1000～3000 tons, realizes high-level efficiency, the high quality of production of lime.
(3) the rotating bed high-temp waste gas is used for the preheating Wingdale, and high temperature lime heat is used for warm-up combustion-supporting air, and system thermal obtains high-efficiency comprehensive utilization, and comprehensive energy consumption is low, and production cost is low, economic benefit and obvious social benefit.
Description of drawings
Fig. 1 is a block diagram of the present invention.Wherein: 1: rotary conveyor, 2: ore storage bunker, 3: ore preheater, 4: the high-temperature flue gas pipeline, 5: distributor, 6: vibratory screening apparatus, 7: cloth district, 8: the heating zone, 9: high-temperature zone, 10: soaking zone, 11: discharge zone, 12: rotating bed, 13: discharging machine, 14: water cooler, 15: air preheater, 16: the combustion air pipeline, 17: burner blower, 18: exhaust pipeline, 19: flue, 20: fly-ash separator, 21: dedusting fan, 22: smoke discharging pipe, 23: gas pipeline, 24: fuel cartridge.
Embodiment
Following examples are to further specify of the present utility model, but the utility model is not limited thereto.
Described lime activity according to standard DIN EN 13971-2008 (the carbonate lime material. activity determination. the hydrochloric acid potentiometric titration) method measures, lime product chip index granularity is measured according to standard GB/T2007.7 method less than the lime weight percent of 5mm, and lime product is given birth to burning rate weight percent and measured according to standard GB/T 3286.8 methods.
Embodiment 1:
A kind of production unit that rotates height of bed activity lime of the present utility model is seen Fig. 1, comprises rotary conveyor 1, ore storage bunker 2, ore preheater 3, high-temperature flue gas pipeline 4, distributor 5, vibratory screening apparatus 6, rotating bed 12, lime cooling system, waste gas dedusting system, gas burning system.Rotary conveyor 1 links to each other with ore storage bunker 2; Ore preheater 3 tops link to each other with ore storage bunker 2, and the bottom links to each other with distributor 5; Distributor 5 links to each other with vibratory screening apparatus 6; Vibratory screening apparatus 6 links to each other with rotating bed 12; High-temperature flue gas pipeline 4 two ends link to each other with rotating bed 12 with ore preheater 3 respectively.
Rotating bed 12 is made up of cloth district 7, heating zone 8, high-temperature zone 9, soaking zone 10 and discharge zone 11.Cloth district 7, heating zone 8, high-temperature zone 9, soaking zone 10 and discharge zone 11 join end to end successively.
The lime cooling system comprises: discharging machine 13, water cooler 14, air preheater 15, combustion air pipeline 16, burner blower 17, exhaust pipeline 18.Discharging machine 13 is installed on rotating bed 12 bed surfaces, and discharge end links to each other with water cooler 14; One end of air preheater 15 links to each other with water cooler 14 tops by pipeline, and the hot gas introducing air preheater 15 in the water cooler 14, air preheater 15 the other ends link to each other with flue 19 by exhaust pipeline 18, and waste gas is taken away; Burner blower 17 links to each other with air preheater 15 freezing air is sent into air preheater 15 preheatings, and combustion air pipeline 16 two ends link to each other with rotating bed 12 with air preheater 15 respectively, and preheated air is sent into rotating bed 12.
The waste gas dedusting system comprises: exhaust pipeline 18, flue 19, fly-ash separator 20, dedusting fan 21 and smoke discharging pipe 22.Exhaust pipeline 18 is connected with flue 19, and flue 19 two ends link to each other with ore preheater 3 with fly-ash separator 20 respectively, and dedusting fan 21 two ends link to each other with smoke discharging pipe 22 with fly-ash separator 20 respectively.
Gas burning system comprises: gas pipeline 23 and fuel cartridge 24.Gas pipeline 23 two ends link to each other with fuel cartridge 24 with rotating bed 12 respectively, are rotating bed supply combustion gas.
Limestone granularity is 10～60mm.Fuel is furnace of calcium carbide coal gas.
The ore preheater adopts vertical ore preheater, and rotating bed is rotary hearth continous furnance, and discharging machine adopts water-cooled push rod discharging machine, states water cooler and adopts shaft cooler, and air preheater is a tubular air preheater.
Wingdale is transported to ore storage bunker 2 by rotary conveyor 1, high-temperature flue-gas from rotating bed is 1000～1100 ℃, high-temperature flue gas carries out heat exchange with Wingdale in vertical ore preheater, Wingdale is preheating to 800～900 ℃, spent air temperture drops to 200～240 ℃, is sent to fly-ash separator 20 dedustings by flue 19.
Less than 30mm, big material granularity 30～60mm divides on three layers of cloth rotating bed bed surface greater than 15mm for Wingdale small powder granularity 5～15mm after the preheating, middle material granularity, and the bottom of the bed of material is a small powder, and the middle part of the bed of material is middle material, and the top of the bed of material is aniseed.
The rotating bed bed surface is made up of refractory materials, 850～1000 ℃ of bed surface temperature, 1000～1100 ℃ of heating zone furnace gas temperatures, 1150～1300 ℃ of high-temperature zone furnace gas temperatures, 1000～1100 ℃ of soaking zone furnace gas temperatures.In the ore preheater, be preheating to 800～900 ℃ Wingdale by the even cloth of distributor on vibratory screening apparatus, the small powder 60～70% of granularity 5～15mm has decomposed, small powder is through sieving back cloth on bed surface, it is the bottom of the bed of material, on the one hand because the bed surface refractory materials remains at 850～1000 ℃ temperature undecomposed small powder is decomposed fully, the middle material and the top aniseed at bed of material middle part can prevent effectively that small powder is in the high-temperature zone burning on the other hand.According to small powder, middle material, three layers of cloth of aniseed, Wingdale is through heating zone, high-temperature zone, soaking zone, the aniseed on bed of material surface is fully decomposed, and the middle material at bed of material middle part obtains high activity, the industrial lime of high purity high-quality thus owing to there is the existence of soaking zone also to obtain abundant decomposition.
Discharging machine outputs to water cooler to high temperature lime (950～1050 ℃), the room temperature freezing air is moved upward by the bottom and high temperature lime carries out heat exchange in water cooler, the high-temp waste gas that forms to water cooler top reaches 700～900 ℃ and enters exchanging air, in air preheater the freezing air from burner blower is preheating to 400～600 ℃ and is sent to the rotating bed combustion fuel, waste gas is sent to fly-ash separator by exhaust pipeline; High temperature lime is from top to bottom motion in water cooler, is cooled fast to less than after 80～100 ℃ by air, delivers to the lime finished bin by rotary conveyor.
The activity of lime finished product is 395～400ml, and chip index 1.2% is given birth to burning 0.2%.
Embodiment 2:
A kind of production unit that rotates height of bed activity lime of the present utility model, ore preheater 3 adopt chain grate formula ore preheater, and discharging machine 13 adopts the water-cooling spiral discharging machine, and air preheater 15 is Clothoid type air preheaters.Other apparatus embodiments 1.
Fuel adopts blast furnace gas.
Wingdale is transported to ore storage bunker 2 by rotary conveyor 1, high-temp waste gas temperature from rotating bed is 1000～1100 ℃, high-temp waste gas carries out heat exchange with Wingdale in chain grate formula ore preheater, Wingdale is preheating to 800～900 ℃, spent air temperture drops to 200～240 ℃, is sent to fly-ash separator 20 dedustings by flue 19.Other are with embodiment 1.
The activity of lime finished product is 392～394ml, and chip index 2.0% is given birth to burning 0.4%.
Embodiment 3:
A kind of production unit that rotates height of bed activity lime of the present utility model, ore preheater 3 adopt chain grate formula ore preheater, and discharging machine 13 adopts water-cooled push rod discharging machine, and water cooler 14 adopts chain grate formula water cooler, and air preheater is the Clothoid type air preheater.Other apparatus embodiments 1.
Fuel adopts coal gas of converter.Other are with embodiment 1.
The activity of lime finished product is 394～398ml, and chip index 3.0% is given birth to burning 0.4%.
Embodiment 4:
A kind of production unit that rotates height of bed activity lime of the present utility model, ore preheater 3 adopts vertical ore preheater, and discharging machine 13 adopts water-cooled push rod discharging machine, and water cooler 14 adopts shaft cooler, and air preheater 15 is tubular air preheaters.Other apparatus embodiments 1.
Fuel adopts Sweet natural gas.Other are with embodiment 1.
The activity of lime finished product is 396～399ml, and powder art rate 1.5% is given birth to burning 0.3%.
Embodiment 5:
A kind of production unit that rotates height of bed activity lime of the present utility model is used for light dolomite, is about to rhombspar at 950～1000 ℃ of mixtures that are sintered into CaO and MgO.Rhombspar granularity 10～60mm, be transported to ore storage bunker 2 by rotary conveyor 1, high-temp waste gas temperature from rotating bed is 900～1000 ℃, high-temp waste gas carries out heat exchange with rhombspar in vertical ore preheater, rhombspar is preheating to 700～800 ℃, spent air temperture drops to 150～200 ℃, is sent to fly-ash separator 20 dedustings by flue 19.
Less than 30mm, big material granularity 30～60mm divides on three layers of cloth rotating bed bed surface greater than 15mm for rhombspar small powder granularity 5～15mm after the preheating, middle material granularity, and the bottom of the bed of material is a small powder, and the middle part of the bed of material is middle material, and the top of the bed of material is aniseed.
The rotating bed bed surface is made up of refractory materials, 850～950 ℃ of bed surface temperature, 900～950 ℃ of heating zone furnace gas temperatures, 1000～1100 ℃ of high-temperature zone furnace gas temperatures, 1000～1050 ℃ of soaking zone furnace gas temperatures.
Discharging machine outputs to water cooler to light dolomite (900～1000 ℃), air at room temperature is moved upward by the bottom and high temperature lime carries out heat exchange in water cooler, and the high-temp waste gas that forms to water cooler top is preheating to 400～600 ℃ to the combustion air from burner blower through air preheater and is sent to rotating bed; Light dolomite is from top to bottom motion in water cooler, be cooled fast to 80～100 ℃ by air after, deliver to the light dolomite finished bin by rotary conveyor.
Other are with embodiment 1.
Claims (10)
1. a rotating bed equipment comprises ore preheater (3), distributor (5), vibratory screening apparatus (6), rotating bed (12) and cooling system; Ore preheater (3) links to each other with distributor (5), and distributor (5) links to each other with rotating bed (12) from top to bottom through vibratory screening apparatus (6); Rotating bed (12) links to each other with cooling system.
2. rotating bed equipment as claimed in claim 1 is characterized in that, described rotating bed equipment also comprises charging equipment, and charging equipment links to each other with ore preheater (3).
3. rotating bed equipment as claimed in claim 1 or 2 is characterized in that, described charging equipment is rotary conveyor (1), or chapelet; Described ore preheater (3) is vertical ore preheater, or chain grate formula ore preheater; Described rotating bed is rotary hearth continous furnance.
4. rotating bed equipment as claimed in claim 1 is characterized in that, described rotating bed equipment also comprises ore storage bunker (2), and ore storage bunker (2) is positioned at ore preheater (3) top and is connected with ore preheater (3); The material that charging equipment is carried enters ore preheater (3) through ore storage bunker (2).
5. rotating bed equipment as claimed in claim 1 is characterized in that,, described rotating bed equipment also comprises high-temp waste gas pipeline (4), high-temp waste gas pipeline (4) two ends link to each other with the soaking zone (10) of ore preheater (3) and rotating bed (12) respectively.
6. rotating bed equipment as claimed in claim 1 is characterized in that, described rotating bed (12) is made up of cloth district (7), heating zone (8), high-temperature zone (9), soaking zone (10) and discharge zone (11).Cloth district (7), heating zone (8), high-temperature zone (9), soaking zone (10) and discharge zone (11) are arranged also clockwise or counterclockwise successively along the rotating bed bed surface and are joined end to end mutually; Vibratory screening apparatus (6) is installed in the top of cloth district (7).
7. rotating bed equipment as claimed in claim 1 is characterized in that, rotating bed (12) bed surface is made up of refractory materials, and described refractory materials divides three layers, and the bottom is that light fire brick, middle part are that clay brick, surface are high alumina bricks.
8. rotating bed equipment as claimed in claim 1 is characterized in that, described cooling system comprises: discharging machine (13), water cooler (14), air preheater (15), combustion air pipeline (16), burner blower (17), exhaust pipeline (18).Discharging machine (13) is installed on rotating bed (12) bed surface, and discharge end links to each other with water cooler (14); One end of air preheater (15) links to each other with water cooler (14) top by pipeline, the hot gas introducing air preheater (15) in the water cooler (14), air preheater (15) the other end links to each other with flue (19) by exhaust pipeline (18), and waste gas is taken away; Burner blower (17) links to each other with air preheater (15) freezing air is sent into air preheater (15) preheating, and combustion air pipeline (16) two ends link to each other with rotating bed (12) with air preheater (15) respectively, and preheated air is sent into rotating bed (12).
9. rotating bed equipment as claimed in claim 1 is characterized in that, described discharging machine (13) is selected from water-cooled push rod discharging machine, or the water-cooling spiral discharging machine; Described water cooler (14) is a shaft cooler, or chain grate formula water cooler.Described air preheater (15) is a tubular air preheater, or the Clothoid type air preheater.
10. rotating bed equipment as claimed in claim 1 is characterized in that, described rotating bed equipment also comprises waste gas dedusting system and gas burning system;
Described waste gas dedusting system comprises: exhaust pipeline (18), flue (19), fly-ash separator (20), dedusting fan (21) and smoke discharging pipe (22).Exhaust pipeline (18) is connected with flue (19), and flue (19) two ends link to each other with ore preheater (3) with fly-ash separator (20) respectively, and dedusting fan (21) two ends link to each other with smoke discharging pipe (22) with fly-ash separator (20) respectively;
Described gas burning system comprises: gas pipeline (23) and fuel cartridge (24).Fuel cartridge (24) through gas pipeline (23) and rotating bed (12) with link to each other, be rotating bed supply combustion gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010206590902U CN202089901U (en) | 2010-12-15 | 2010-12-15 | Rotating bed equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206590902U CN202089901U (en) | 2010-12-15 | 2010-12-15 | Rotating bed equipment |
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| CN202089901U true CN202089901U (en) | 2011-12-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180604A (en) * | 2010-12-15 | 2011-09-14 | 周生献 | Spinning bed equipment and process for producing high-activity lime with spinning bed |
| CN107144133A (en) * | 2017-06-21 | 2017-09-08 | 长兴县新宏信耐火材料有限公司 | A kind of refractory brick calcining kiln |
| WO2020083304A1 (en) * | 2018-10-23 | 2020-04-30 | 江苏中圣园科技股份有限公司 | Fine material synergetic calcination type rotary kiln graded calcination system |
-
2010
- 2010-12-15 CN CN2010206590902U patent/CN202089901U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180604A (en) * | 2010-12-15 | 2011-09-14 | 周生献 | Spinning bed equipment and process for producing high-activity lime with spinning bed |
| CN102180604B (en) * | 2010-12-15 | 2013-01-02 | 周生献 | Spinning bed equipment and process for producing high-activity lime with spinning bed |
| CN107144133A (en) * | 2017-06-21 | 2017-09-08 | 长兴县新宏信耐火材料有限公司 | A kind of refractory brick calcining kiln |
| WO2020083304A1 (en) * | 2018-10-23 | 2020-04-30 | 江苏中圣园科技股份有限公司 | Fine material synergetic calcination type rotary kiln graded calcination system |
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