CN109896760A - A kind of device and technique using cement kiln end lime burning - Google Patents
A kind of device and technique using cement kiln end lime burning Download PDFInfo
- Publication number
- CN109896760A CN109896760A CN201910273348.0A CN201910273348A CN109896760A CN 109896760 A CN109896760 A CN 109896760A CN 201910273348 A CN201910273348 A CN 201910273348A CN 109896760 A CN109896760 A CN 109896760A
- Authority
- CN
- China
- Prior art keywords
- dore furnace
- cyclone cylinder
- preheating
- lime
- cement kiln
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 60
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 60
- 239000004571 lime Substances 0.000 title claims abstract description 60
- 239000004568 cement Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 55
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 235000019738 Limestone Nutrition 0.000 claims description 30
- 239000006028 limestone Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 17
- 238000000354 decomposition reaction Methods 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000002006 petroleum coke Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000008187 granular material Substances 0.000 description 5
- 238000001354 calcination Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 229940087373 calcium oxide Drugs 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Furnace Details (AREA)
Abstract
The present invention provides a kind of device and technique using cement kiln end lime burning, described device includes preheating unit, dore furnace, cyclone separator, the cooling unit of cement kiln end, the preheating unit is made of multistage preheating cyclone cylinder interconnected, the grade cyclone cylinder last of this preheating unit is replaced with into the cyclone separator, the feed opening of the penultimate stage cyclone cylinder of this preheating unit is connected with the spout of the dore furnace；The air inlet of the cyclone separator is connected with the strip air stream outlet of the dore furnace, and the bottom feed opening of the cyclone separator is connected with the feed inlet of the cooling unit, and the air outlet of the cooling unit is connected with the taper air inlet of the dore furnace.The present invention is small to cement kiln revamping workload, and occupied area is small, and raw material, fuel tolerance are strong, stable, good product quality.
Description
Technical field
The present invention relates to lime calcining field, especially a kind of device and technique using cement kiln end lime burning.
Background technique
Lime is the base stock of steel and iron industry, is also widely used in the fields such as electric power, building, chemical industry, environment, agricultural,
Wherein steel industry and calcium carbide industry mainly use blocky lime, and the industries master such as electric power, building materials, papermaking, desulfurization, sewage treatment
To use powdered lime.The technology that powdered lime suppresses balling-up is increasingly mature, and powdered lime is pressed into the ball block of various sizes,
This will further expand the application range of powder lime, and market potential is huge.
Currently, powdered lime be by selecting, being crushed, grinding bulk lime obtain, but blocky lime grindability compares lime
Stone is poor, and grinding pow consumption is high.It is representative to high activity powdery stone using desulfurization industry as national environmental protection renovation dynamics is increasing
The demand of ash increasingly increases, and especially active calcium content is greater than 90% high-quality powder lime.To efficient, low consumption, environment friend
The demand of good powder lime calciner plant is more urgent.
Under the same terms, powdered lime stone is faster than blocky decomposition rate, is conducive to the yield for improving kiln and reduces heat consumption.State
Outer portion country and Some Domestic area cement production capacity are seriously saturated, and profit margin is low, or even faces loss；In addition, with country
The tightening of environmental protection policy, 2000t/d clinker production line below will gradually be eliminated.If this part of cement production line can be by changing
Lime of changing the line of production is made, can get good social and economic benefits under the premise of meeting country's correlation environmental requirement.
In this context, this patent proposes a kind of by carrying out part transformation to cement kiln production line, increases part and closes
Key apparatus, to produce the device and technique of active lime powder.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of devices and work using cement kiln end lime burning
Skill, it can be achieved that waste cement kiln tail system re-using, and using flexible.
The technical solution adopted by the present invention to solve the technical problems is:
Present invention firstly provides a kind of device using cement kiln end lime burning, the preheating unit including cement kiln end,
It further include dore furnace, cyclone separator, cooling unit, the preheating unit is made of multistage preheating cyclone cylinder interconnected,
The grade cyclone cylinder last of this preheating unit is replaced with into the cyclone separator, the penultimate stage of this preheating unit is revolved
The feed opening of air duct is connected with the spout of the dore furnace；The strip of the air inlet of the cyclone separator and the dore furnace
Air stream outlet is connected, and the bottom feed opening of the cyclone separator is connected with the feed inlet of the cooling unit, the cooling unit
Air outlet be connected with the taper air inlet of the dore furnace.
Preferably, further include auxiliary burner, the air inlet of the auxiliary burner is connected with a blower, auxiliary burner air outlet with it is described
The taper air inlet of dore furnace is connected.
Preferably, the inner cylinder ratio of height to diameter of the cyclone separator is greater than 1.5.
Preferably, the preheating unit is two groups, and the grade cyclone cylinder last of every group of preheating unit replaces with described
Cyclone separator, the cooling unit also mutually should be two groups.
Preferably, the cooling unit is multistage cooling cyclone cylinder interconnected.
The present invention also provides a kind of technique using cement kiln end lime burning based on above-mentioned apparatus, specific steps are as follows:
Powdered lime stone is fed from the air hose between the first order cyclone cylinder and second level cyclone cylinder of the preheating unit,
Powdered lime stone brings first order cyclone cylinder by hot wind, after cyclonic separation and preliminary preheating, by exhaust gas from first order whirlwind
Cylinder discharge；
Powdered lime stone by first order cyclone cylinder tapering discharge port feeding second level cyclone cylinder and third level cyclone cylinder it
Between air hose so that powdered lime stone brings second level cyclone cylinder by hot wind；
Pre- thermal flow process is repeated so that the multistage preheating of powdered lime stone is done step-by-step, last powdery lime stone passes through the inverse
Second level cyclone cylinder feeds dore furnace；
Powdered lime stone after preheating is completed to decompose in dore furnace, powdered lime is formed after decomposition, while utilizing decomposition
Flue gas in furnace brings powdered lime into cyclone separator to carry out gas solid separation, the hot fume after separation enter preheating unit with
Powdered lime stone is preheated, the powdered lime after separation feeds cooling unit；
Cooling air is passed through cooling unit so that it carries out heat exchange with the hot powdered lime after decomposition, in realization powdery
While lime is cooling, cooling air enters dore furnace after being heated by hot material, to provide fuel hot-air to dore furnace；Together
When, high-temperature flue gas is provided by blower and auxiliary burner, to supplement the hot wind and heat of dore furnace, and then improves the air quantity of dore furnace
With temperature, to realize decomposition of the powdered lime stone in dore furnace.
Preferably, it is coal, natural gas, heavy oil, petroleum coke or alternative fuel that the dore furnace is fuel used.
The positive effect of the present invention:
1, the present invention is based on raw water stall tail system is transformed (i.e. the preheating unit of former cement kiln end last
Grade cyclone cylinder such as transform cyclone separator as, while adding dore furnace again at other equipment), waste cement kiln tail system may be implemented
Re-using, the small cement producing line being especially eliminated can also be adapted as this powdered lime production line, and its construction project
Measure small, investment reduction.
2, the present invention is based on the transformations to raw water stall tail system to have invertibity, and former cement producing line can not be removed, can
Switch the clinker that resumes production according to market situation, the switching that clinker and lime can be realized produces.
3, preheating, decomposition and cooling under granular material suspended state, heat exchanger effectiveness is high, and system heat consumption is low, than blocky lime
It is low to produce heat consumption, saves fuel.
4, powdered lime stone degree of decomposition is high, and the calcium-oxide content of production is high；Its internal temperature of improved device
It is evenly distributed and controllably, reaction temperature is lower than Rotary Kiln Control, can effectively reduce the generation and discharge of nitrogen oxides in device.
5, structure is relatively easy, and movable part is few, and maintenance cost is low, and service life of equipment is long.
6, production scale is easy to enlargement, and pre- thermal decomposition can realize the benefit of vertical direction spatial with the cooling cyclone cylinder of powdered lime
With appliance arrangement takes up little area, is with low investment.
7, the lime stone of various partial sizes can be used as the raw material of the present apparatus, as long as calcium oxide content etc. is met the requirements,
And the lime stone that blocky lime calcining cannot use granularity small.
8, this technique and device can also calcine other materials, such as dolomite, carbide slag, using calcining and decomposing principle system
Standby calcium oxide, magnesia etc..
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram that cement kiln end lime burning is utilized described in embodiment 1；
Fig. 2 is the apparatus structure schematic diagram that cement kiln end lime burning is utilized described in embodiment 2；
Fig. 3 is the structural schematic diagram of the cooling unit.
Specific embodiment
With reference to the accompanying drawing to a preferred embodiment of the present invention will be described in detail.
Embodiment 1
Referring to Fig.1, the embodiment of the present invention 1 provides a kind of device using cement kiln end lime burning, including cement kiln end
Preheating unit 1, further include dore furnace 2, cyclone separator 3, cooling unit 4, the preheating unit 1 is by multistage interconnected
Preheating cyclone cylinder composition (be followed successively by from top to bottom the first order, the second level ..., penultimate stage, grade cyclone cylinder last),
The grade cyclone cylinder last of this preheating unit 1 is replaced with into the cyclone separator 3 (if former cement kiln end not reproduction water
Mud, preheating unit grade cyclone cylinder last do not use, and the afterbody of the preheating unit 1 of original cement kiln end can be revolved
Air duct is directly transformed into the cyclone separator with bottoms material stagnant area, and cooling unit 4 is according to the physical location of cyclone separator 3
It is arranged design), by the spout phase of the feed opening of the penultimate stage cyclone cylinder of this preheating unit 1 and the dore furnace 2
Even；The air inlet of the cyclone separator 3 is connected with the strip air stream outlet of the dore furnace 2, the bottom of the cyclone separator 3
Subordinate's material mouth is connected with the feed inlet of the cooling unit 4, the taper of the air outlet of the cooling unit 4 and the dore furnace 2 into
Air port is connected.
Wherein, the inner cylinder ratio of height to diameter of the cyclone separator 3 is greater than 1.5.The cooling unit 4 is multistage interconnected
Cooling cyclone cylinder.
The present embodiment 1 also provides a kind of technique using cement kiln end lime burning based on the present embodiment described device,
Specific steps are as follows:
Granular material (powdered lime stone) is fed from the air hose between the first order and second level cyclone cylinder of preheating unit 1,
First order cyclone cylinder is brought by hot wind, after cyclonic separation and preliminary preheating, exhaust gas is discharged through first order cyclone cylinder, powder
Material is fed the air hose between the second level and third level cyclone cylinder by first order cyclone cylinder tapering, brings second level whirlwind by hot wind
Cylinder, principle, is done step-by-step the multistage preheating of material, feeds dore furnace 2 finally by penultimate stage cyclone cylinder, powdery is pre- according to this
Lime stone after heat is completed to decompose in dore furnace 2, the formation powdered lime after decomposition, after the flue gas in dore furnace 2 will decompose
Powdered lime bring the cyclone separator 3 with bottoms material stagnant area into, complete gas solid separation in the cyclone separator 3, point
Hot fume from after enters preheating unit 1 and preheats to powdered lime stone, and the powdered lime after separation feeds cooling unit 4；
Hot powdered lime after cooling air enters cooling unit 4 and decomposes carries out heat exchange, while realizing that powdered lime is cooling,
Cooling air enters dore furnace 2 after being heated by hot material, provides fuel hot-air to dore furnace 2.
Embodiment 2
Referring to Fig. 2, the embodiment of the present invention 2 provides a kind of device using cement kiln end lime burning, including cement kiln end
Preheating unit 1, further include dore furnace 2, cyclone separator 3, cooling unit 4, the preheating unit 1 is by multistage interconnected
Preheating cyclone cylinder composition (be followed successively by from top to bottom the first order, the second level ..., penultimate stage, grade cyclone cylinder last),
The grade cyclone cylinder last of this preheating unit 1 is replaced with into the cyclone separator 3 (if former cement kiln end not reproduction water
Mud, preheating unit grade cyclone cylinder last do not use, and the afterbody of the preheating unit 1 of original cement kiln end can be revolved
Air duct is directly transformed into the cyclone separator with bottoms material stagnant area, and cooling unit 4 is according to the physical location of cyclone separator 3
It is arranged design), by the spout phase of the feed opening of the penultimate stage cyclone cylinder of this preheating unit 1 and the dore furnace 2
Even；The air inlet of the cyclone separator 3 is connected with the strip air stream outlet of the dore furnace 2, the bottom of the cyclone separator 3
Subordinate's material mouth is connected with the feed inlet of the cooling unit 4, the taper of the air outlet of the cooling unit 4 and the dore furnace 2 into
Air port is connected.
Wherein, the inner cylinder ratio of height to diameter of the cyclone separator 3 is greater than 1.5.The cooling unit 4 is multistage interconnected
Cooling cyclone cylinder.
It further, further include auxiliary burner 5, the air inlet of the auxiliary burner 5 is connected with a blower 6, auxiliary 5 air outlet of burner
It is connected with the taper air inlet of the dore furnace 2.
Specifically, the preheating unit 1 is two groups be arranged side by side, the grade cyclone cylinder last of every group of preheating unit 1
The cyclone separator 3 is replaced with, the cooling unit 4 also mutually should be two groups, i.e., carries out former cement kiln end pre-heating system
Transformation, transform bi serie powdered lime decomposing and calcining device as.
As shown in figure 3, the cooling unit 4 is whirlwind cooling unit, including cyclone cylinder, further include cold burden storehouse 44,
Air hose 45 is respectively equipped with air inlet and feed inlet at the top of the cyclone cylinder, and the bottom of the cyclone cylinder is respectively equipped with air outlet
And discharge port；The cyclone cylinder is by the one cyclonic cylinder 41, second level cyclone cylinder 42 and three-level cyclone cylinder that set gradually from top to bottom
43 compositions, the discharge port of the one cyclonic cylinder 41 are connected with the feed inlet of second level cyclone cylinder 42, the discharging of second level cyclone cylinder 42
Mouth is connected with the feed inlet of three-level cyclone cylinder 43, and the discharge port of three-level cyclone cylinder 43 is connected with the feed inlet of the cold powder cabin 44；
The air outlet of the one cyclonic cylinder 41, second level cyclone cylinder 42 and three-level cyclone cylinder 43 passes through connecting tube and 45 phase of a blower respectively
Even, the air outlet of the blower 45 is connected with the air hose 46.In use, powdery hot material successively passes through one cyclonic cylinder from top to bottom
41, enter cold burden storehouse 44 after second level cyclone cylinder 42, three-level cyclone cylinder 43 are cooling；One cyclonic cylinder 41, second level cyclone cylinder 42, three-level
The air inlet of cyclone cylinder 43 is connected with atmosphere (cold air), and cyclone cylinder air outlets at different levels pass through 45 extraction system of blower.It is cooling
Unit 4 is guaranteeing the same of the cooling powdery hot material of high efficient heat exchanging using air-cooled whirlwind and using the form of lower outlet air, bottom discharge
When, and cyclone cylinder resistance is reduced, save the power consumption of air motion.
The present embodiment 2 also provides a kind of technique using cement kiln end lime burning based on the present embodiment described device,
Specific steps are as follows:
Granular material (powdered lime stone) be divided to two-way respectively from the first order of two column preheating units 1 and second level cyclone cylinder it
Between air hose feeding, powder work stone brings first order cyclone cylinder by hot wind, after cyclonic separation and preliminary preheating, exhaust gas the
The discharge of one cyclonic cylinder, granular material feed the air hose between the second level and third level cyclone cylinder by first order cyclone cylinder tapering and feed
Enter, second level cyclone cylinder is brought by hot wind, with this principle, the multistage preheating of material is done step-by-step, last granular material passes through two
The penultimate stage cyclone cylinder of column preheating unit 1 feeds dore furnace 2 simultaneously, and the lime stone after powdery preheating is complete in dore furnace 2
At decomposition, formation powdered lime after decomposition, the flue gas in dore furnace 2 is divided into two-way, and every road flue gas is by the powdery stone after decomposition
Ash brings two column into and respectively adds the cyclone separator 3 with bottoms material stagnant area, and gas-solid point is completed in corresponding cyclone separator 3
From the preheating unit 1 that the hot fume after separation enters respective respective column preheats powdered lime stone, the powdery stone after separation
Ash feeds corresponding cooling unit 4；Hot powdered lime after cooling air enters cooling unit 4 and decomposes carries out heat exchange,
While realizing that powdered lime is cooling, two-way cooling air enters dore furnace 2 after being heated by hot material, provides combustion to dore furnace 2
Material uses hot-air；In addition, high-temperature flue gas is provided by auxiliary burner 5, auxiliary burner blower 6, to supplement 2 hot wind of dore furnace and heat,
And then 2 air quantity of dore furnace and temperature are improved, it helps to realize preheating powdered lime stone and is decomposed in dore furnace 2.
In addition, can be according to the performance requirement of powdered lime, dore furnace 2 is fuel used can be in coal, natural gas, heavy oil, petroleum
It is selected in the burning fuels such as coke, alternative fuel, to meet powdered lime performance requirement.
This patent is small to cement kiln revamping workload, and occupied area is small, and raw material, fuel tolerance are strong, stable, product quality
It is good.
It is above-described to be merely a preferred embodiment of the present invention, it should be understood that the explanation of above embodiments is only used
In facilitating the understanding of the method and its core concept of the invention, it is not intended to limit the scope of protection of the present invention, it is all of the invention
Any modification for being made within thought and principle, equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of device using cement kiln end lime burning, the preheating unit including cement kiln end, it is characterised in that: further include
Dore furnace, cyclone separator, cooling unit, the preheating unit is made of multistage preheating cyclone cylinder interconnected, this is pre-
The grade cyclone cylinder last of hot cell replaces with the cyclone separator, by the penultimate stage cyclone cylinder of this preheating unit
Feed opening is connected with the spout of the dore furnace；The air inlet of the cyclone separator and the strip air-flow of the dore furnace go out
Mouth is connected, and the bottom feed opening of the cyclone separator is connected with the feed inlet of the cooling unit, the outlet air of the cooling unit
Mouth is connected with the taper air inlet of the dore furnace.
2. a kind of device using cement kiln end lime burning according to claim 1, it is characterised in that: further include auxiliary combustion
The air inlet of furnace, the auxiliary burner is connected with a blower, and auxiliary burner air outlet is connected with the taper air inlet of the dore furnace.
3. a kind of device using cement kiln end lime burning according to claim 1 or 2, it is characterised in that: the rotation
The inner cylinder ratio of height to diameter of wind separator is greater than 1.5.
4. a kind of device using cement kiln end lime burning according to claim 2, it is characterised in that: the preheating is single
Member is two groups, and the grade cyclone cylinder last of every group of preheating unit replaces with the cyclone separator, the cooling unit
It mutually should be two groups.
5. a kind of device using cement kiln end lime burning according to claim 1 or 2, it is characterised in that: described cold
But unit is multistage cooling cyclone cylinder interconnected.
6. a kind of technique using cement kiln end lime burning based on any claim described device in claim 1-5,
It is characterized in that, specific steps are as follows:
Powdered lime stone is fed from the air hose between the first order cyclone cylinder and second level cyclone cylinder of the preheating unit, powdery
Lime stone brings first order cyclone cylinder by hot wind, and after cyclonic separation and preliminary preheating, exhaust gas is arranged from first order cyclone cylinder
Out；
Powdered lime stone is fed between second level cyclone cylinder and third level cyclone cylinder by the tapering discharge port of first order cyclone cylinder
Air hose, so that powdered lime stone brings second level cyclone cylinder by hot wind；
Pre- thermal flow process is repeated so that the multistage preheating of powdered lime stone is done step-by-step, last powdery lime stone passes through described second from the bottom
Grade cyclone cylinder feeds dore furnace；
Powdered lime stone after preheating is completed to decompose in dore furnace, powdered lime is formed after decomposition, while using in dore furnace
Flue gas bring powdered lime into cyclone separator to carry out gas solid separation, the hot fume after separation enters preheating unit to powder
Shape lime stone is preheated, and the powdered lime after separation feeds cooling unit；
Cooling air is passed through cooling unit so that it carries out heat exchange with the hot powdered lime after decomposition, in realization powdered lime
While cooling, cooling air enters dore furnace after being heated by hot material, to provide fuel hot-air to dore furnace；Meanwhile it is logical
It crosses blower and auxiliary burner provides high-temperature flue gas, to supplement the hot wind and heat of dore furnace, and then improve the air quantity and temperature of dore furnace
Degree, to realize decomposition of the powdered lime stone in dore furnace.
7. a kind of technique using cement kiln end lime burning according to claim 5, it is characterised in that: the dore furnace
Fuel used is coal, natural gas, heavy oil, petroleum coke or alternative fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910273348.0A CN109896760A (en) | 2019-04-04 | 2019-04-04 | A kind of device and technique using cement kiln end lime burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910273348.0A CN109896760A (en) | 2019-04-04 | 2019-04-04 | A kind of device and technique using cement kiln end lime burning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109896760A true CN109896760A (en) | 2019-06-18 |
Family
ID=66954410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910273348.0A Pending CN109896760A (en) | 2019-04-04 | 2019-04-04 | A kind of device and technique using cement kiln end lime burning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109896760A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045224A (en) * | 2021-03-10 | 2021-06-29 | 中国中材国际工程股份有限公司 | System and method for preparing powdery active lime by modifying cement clinker production line |
| CN113511824A (en) * | 2021-05-08 | 2021-10-19 | 浙江钙科机械设备有限公司 | Suspension calcining process for large-particle calcium oxide |
| CN114249547A (en) * | 2020-09-24 | 2022-03-29 | 合肥丰达水泥科技有限公司 | Kiln-free calcination process for producing powdery active lime |
| CN117886522A (en) * | 2024-03-15 | 2024-04-16 | 嘉峪关大友嘉镁钙业有限公司 | Limestone rotary kiln preheating device and application method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711802A (en) * | 1994-03-22 | 1998-01-27 | F. L. Smidth & Co. A/S | Heat treatment of lime sludge |
| CN101570406A (en) * | 2009-06-11 | 2009-11-04 | 北京市琉璃河水泥有限公司 | Calcination process of active lime |
| CN101608866A (en) * | 2009-07-24 | 2009-12-23 | 天津水泥工业设计研究院有限公司 | Can handle the outer nsp kiln tail system of cement kiln of band combustible raw material |
| CN103105067A (en) * | 2013-03-06 | 2013-05-15 | 刘红锁 | Powdery material suspension type heat exchanger device and powdery material heat exchanger system |
| CN103387347A (en) * | 2013-07-30 | 2013-11-13 | 天津水泥工业设计研究院有限公司 | Method and device for producing active lime powder from calcined limestone |
| CN106220004A (en) * | 2016-07-23 | 2016-12-14 | 襄汾县鸿达集团水泥建材有限公司 | The rotary kiln production line of dinectly bruning powdered lime and production method |
| CN205838850U (en) * | 2016-07-23 | 2016-12-28 | 襄汾县鸿达集团水泥建材有限公司 | The rotary kiln production line of calcining powdered lime |
| CN107673637A (en) * | 2017-12-01 | 2018-02-09 | 河南中蓝新材料科技有限公司 | The suspension roasting device and its production technology of a kind of powdery active lime |
-
2019
- 2019-04-04 CN CN201910273348.0A patent/CN109896760A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711802A (en) * | 1994-03-22 | 1998-01-27 | F. L. Smidth & Co. A/S | Heat treatment of lime sludge |
| CN101570406A (en) * | 2009-06-11 | 2009-11-04 | 北京市琉璃河水泥有限公司 | Calcination process of active lime |
| CN101608866A (en) * | 2009-07-24 | 2009-12-23 | 天津水泥工业设计研究院有限公司 | Can handle the outer nsp kiln tail system of cement kiln of band combustible raw material |
| CN103105067A (en) * | 2013-03-06 | 2013-05-15 | 刘红锁 | Powdery material suspension type heat exchanger device and powdery material heat exchanger system |
| CN103387347A (en) * | 2013-07-30 | 2013-11-13 | 天津水泥工业设计研究院有限公司 | Method and device for producing active lime powder from calcined limestone |
| CN106220004A (en) * | 2016-07-23 | 2016-12-14 | 襄汾县鸿达集团水泥建材有限公司 | The rotary kiln production line of dinectly bruning powdered lime and production method |
| CN205838850U (en) * | 2016-07-23 | 2016-12-28 | 襄汾县鸿达集团水泥建材有限公司 | The rotary kiln production line of calcining powdered lime |
| CN107673637A (en) * | 2017-12-01 | 2018-02-09 | 河南中蓝新材料科技有限公司 | The suspension roasting device and its production technology of a kind of powdery active lime |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249547A (en) * | 2020-09-24 | 2022-03-29 | 合肥丰达水泥科技有限公司 | Kiln-free calcination process for producing powdery active lime |
| CN114249547B (en) * | 2020-09-24 | 2022-07-05 | 合肥丰达水泥科技有限公司 | Kiln-free calcination process for producing powdery active lime |
| CN113045224A (en) * | 2021-03-10 | 2021-06-29 | 中国中材国际工程股份有限公司 | System and method for preparing powdery active lime by modifying cement clinker production line |
| CN113511824A (en) * | 2021-05-08 | 2021-10-19 | 浙江钙科机械设备有限公司 | Suspension calcining process for large-particle calcium oxide |
| CN117886522A (en) * | 2024-03-15 | 2024-04-16 | 嘉峪关大友嘉镁钙业有限公司 | Limestone rotary kiln preheating device and application method thereof |
| CN117886522B (en) * | 2024-03-15 | 2024-05-07 | 嘉峪关大友嘉镁钙业有限公司 | Limestone rotary kiln preheating device and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109896760A (en) | A kind of device and technique using cement kiln end lime burning | |
| CN103771734B (en) | A kind of mass-producing calcination processing utilizes the method for electrolytic manganese residues | |
| CN102690910B (en) | Dry-method treatment and waste heat continuous utilization system for blast-furnace slag | |
| CN1219857C (en) | Solid slag-discharing dry-powder air-current bed gasification process and apparatus | |
| CN101570406A (en) | Calcination process of active lime | |
| CN103058536B (en) | Heat-accumulation dividing-wall heating rotary kiln device | |
| CN101955166B (en) | Method for decomposing semi-hydrated phosphogypsum | |
| CN109776002B (en) | Suspension calcination activation system and method suitable for clay mine tailings | |
| CN105219907A (en) | The iron-smelting process of high-phosphor oolitic hematite gas base directly reducing-mill ore magnetic selection | |
| CN108913827A (en) | A kind of system and technique for utilizing atomization high-temperature liquid state slag and recycling high temperature sensible heat | |
| CN109836059A (en) | A kind of transformation cement kiln lime production device and method | |
| CN109970087A (en) | A kind of device and method using the dry red mud sintered alumina clinker of Bayer process | |
| CN201297860Y (en) | Device for calcining cement by utilizing acetylene sludge to completely substitute the limestone | |
| CN107673637A (en) | The suspension roasting device and its production technology of a kind of powdery active lime | |
| CN203007146U (en) | Beam type heat accumulation lime kiln | |
| CN101195522A (en) | Method for calcination of chamotte in rotary cement kiln with coal gas as fuel | |
| CN105152141B (en) | A kind of gypsum relieving haperacidity thermal technology and device | |
| CN105347702A (en) | Cement production rotary kiln device | |
| CN202658165U (en) | System for processing blast-furnace slag by dry method and continuously adopting waste heat | |
| CN103276195A (en) | Stone coal vanadium ore shaft roasting method and system | |
| CN203333729U (en) | Roasted material cooling and waste heat recovering device and system | |
| CN108277315B (en) | Device and method for replacing scrap steel by reducing pellets through converter flue gas | |
| CN209669075U (en) | A kind of transformation cement kiln lime production device | |
| CN102719579B (en) | Fluidized heat exchange device after slag of dry type granulating blast furnace | |
| CN209797792U (en) | Device for calcining lime by using cement kiln tail |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190618 |