CN105330178B - A kind of method that production active lime is transformed using cement producing line - Google Patents
A kind of method that production active lime is transformed using cement producing line Download PDFInfo
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- CN105330178B CN105330178B CN201510759101.1A CN201510759101A CN105330178B CN 105330178 B CN105330178 B CN 105330178B CN 201510759101 A CN201510759101 A CN 201510759101A CN 105330178 B CN105330178 B CN 105330178B
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Abstract
The present invention relates to a kind of method that production active lime is transformed using cement producing line, by the simple process system reform, original cement producing line had not only been produced cement but also the technique of active lime can be produced, can be according to market situation free switching；The present invention adapts to the economic situation of current cement production capacity surplus, and enterprise can be helped to reduce business risk, multi-channel management, increase enterprise market competitive capacity, and small, transformation is fast, yield is big, changes the line of production the characteristics of fast with investing；The original equipment of grout line and system can be made full use of, once invests relatively low, and cement plant can flexibly select to produce cement or active lime according to market situation；Because the production scale of grout line is much larger than the scale of active lime production line, the present invention can realize larger active lime yield on less grout line.
Description
Technical field
It is specifically a kind of to be lived using cement producing line transformation production the present invention relates to active lime production technical field
The method of property lime.
Background technology
Active lime is widely used in the industries such as steel, building materials, aluminum oxide, magnesium metal, calcium carbide and power plant desulfurization papermaking, is one
The very extensive material of kind purposes.Lime is to calcine the lime using calcium carbonate as main component at a certain temperature in various kilns
Prepared by rock raw material.In calcination process, carbonatite raw material decomposes are calcium oxide, magnesia and carbon dioxide, CO2With
The combustion product of fuel is discharged simultaneously, and calcium oxide is then drawn off out of kiln after firing.
The kiln species of production lime is a lot, and shaft kiln and rotary kiln are the most frequently used lime calcining kilns.Rotary kiln produces stone
The technical process of ash is as follows：Enter preheater by 15~40mm of lime stone of crushing and screening and preheat 900 DEG C or so, subsequently into
1200 ~ 1350 DEG C of Calcination: Calcination temperature is carried out in rotary kiln, the material after calcining carries out cooling into cooler and is cooled to ring
Border temperature, finished product can dispatch from the factory by screening.
Existing cement production process has the similar place communicated with the production technology of active lime.Cement industry is passed through
The fast development of more than ten years, for cement output in 2014 up to 24.76 hundred million tons, cement production capacity surplus is serious.With home and abroad market
Demand is dispirited, and the adjustment of country's industrial structure, cement price constantly reduces, and cement production enterprise is poor-performed.How to be given birth to using cement
Producing line transformation production active lime so that enterprise faces market flexible operation, evade the market risk, turn into one it is urgently to be resolved hurrily
The problem of.
The content of the invention
For above-mentioned how using cement producing line transformation production active lime, so that enterprise flexibly passes through in face of market
Battalion, the problem of evading the market risk, the present invention provide a kind of method that production active lime is transformed using cement producing line.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of method that production active lime is transformed using cement producing line, specific production stage are as described below：
Step 1：The material produced needed for active lime is sent into air valve by belt feeder I, then passes through high-temperature machining
Disconnected valve is sent at cement preheater C5 tremie pipes, and subsequently into kiln tail smoke-box, material enters drying and preheating catabolic phase, is come herein
It it is 900 DEG C from the hot gas temperature of kiln hood；
Step 2：Material in kiln tail smoke-box enters rotary kiln, and coal dust sprays into rotary kiln by kiln hood coal injection burner, closes
The electric brake plate valve closed in tertiary-air pipe, kiln tail do not need Coal powder spray, and decomposition temperature, the calcining heat of material are respectively：800~
900 DEG C, 1200 ~ 1350 DEG C, with the rotation of rotary kiln, material flows to grate-cooler direction, and material goes out temperature during rotary kiln
For 1000 ~ 1150 DEG C, the temperature of auxiliary air is 700 ~ 1050 DEG C；
Step 3：Material after calcining goes out rotary kiln and enters grate-cooler, under the cooling of cooling blower fan, is transported with grate-cooler
Dynamic, the material for going out grate-cooler is cooled to environment temperature, and cooling drive end unit discharge EGT is 200 ~ 300 DEG C；
Step 4：The material for going out grate-cooler enters tray conveyer, and cement clinker library top is transported to through tray conveyer,
Storehouse top sets a threeway Material valve I, and lower lace conveyer II separates with former cement system, the thing that belt conveyor II conveys
Material delivers to the storage of active lime finished product and shipping workshop；
Rotary kiln can be divided into preheating zone, intermediate zone, clinkering zone and cooling zone by function in the step 2, and each band accounts for revolution
The length ratio of kiln is respectively：35% ~ 50%, 10% ~ 25%, 20% ~ 30% and 5% ~ 10%；
Waste gas caused by kiln tail during material calcining in the step 2, heel row is filtered by raw water mud exhaust treatment system
Go out, kiln tail high-temperature blower is opened in production, kiln tail smoke-box air-flow is along dore furnace, preheater, humidification system through kiln tail high-temperature blower
Into kiln tail bag collector dedusting, the gas after dedusting is discharged through kiln tail gas exhaust blower from chimney；Kiln tail bag collector is arranged
The dedusting ash gone out enters FU machine for zipper III, FU machine for zipper IV, and a threeway Material valve II is set in the outlet of FU machine for zipper IV, under
Surge bunker is connect, is separated with former cement system, dedusting ash is delivered to bulk machine shipment through discharge chute and dispatched from the factory；
Cooling drive end unit waste gas in the step 3, to be discharged along former cement system, waste gas enters kiln head bag dust collector dedusting,
Gas after dedusting is discharged through kiln hood waste gas exhaust blower from chimney, and the dedusting ash of kiln head bag dust collector discharge enters FU machine for zipper
Ith, FU machine for zipper II, tray conveyer is entered through FU machine for zipper II；
Threeway Material valve I in the step 4 is electric three-way Material valve；
Raw material limestone of the material needed for active lime using production cement is produced in the step 1, this lime stone
Particle diameter is 5 ~ 50mm；
The threeway Material valve II is electric three-way Material valve.
Beneficial effects of the present invention：
The method provided by the invention that production active lime is transformed using cement producing line, is changed by simple process system
Make, original cement producing line had not only been produced cement but also the technique of active lime can be produced, can be according to market situation free switching；
The present invention adapts to the economic situation of current cement production capacity surplus, and enterprise can be helped to reduce business risk, multi-channel management, increase
Enterprise market competitive capacity, and with investing, small, transformation is fast, yield is big, changes the line of production the characteristics of fast；
The method provided by the invention for transforming production active lime using cement producing line, grout line can be made full use of former
Some equipment and system, once invest relatively low, and cement plant can flexibly select to produce cement or active stone according to market situation
Ash；Because the production scale of grout line is much larger than the scale of active lime production line, the present invention can be on less grout line
Realize larger active lime yield.
Brief description of the drawings
Fig. 1 is present invention process flow total figure；
Fig. 2 is present invention process flow chart segmentation figure one；
Fig. 3 is present invention process flow chart segmentation figure two；
Fig. 4 is present invention process flow chart segmentation figure three；
Fig. 5 is present invention process flow chart segmentation figure four；
Fig. 6 be 2500t/d new type nonaqueous cement production lines change the line of production production 400t/d active lime process parameter controls it is total
Figure；
Fig. 7 is Fig. 6 segmentation figure one；
Fig. 8 is Fig. 6 segmentation figure two；
Fig. 9 is Fig. 6 segmentation figure three；
Reference：1st, belt feeder I, 2, air valve, 3, high temperature stop valve, 4, rotary kiln, 5, grate-cooler, 6, cooling wind
Machine, 7, tray conveyer, 8, threeway Material valve I, 9, belt feeder II, 10, coal injection burner, 11, electrically operated valve I, 12, kiln hood bag
Dust-precipitator, 13, kiln hood waste gas exhaust blower, 14, FU machine for zipper I, 15, FU machine for zipper II, 16, electric brake plate valve, 17, electrically operated valve
II, 18, kiln tail high-temperature blower, 19, electrically operated valve III, 20, kiln tail bag collector, 21, kiln tail gas exhaust blower, 22, FU slide fasteners
Machine III, 23, FU machine for zipper IV, 24, threeway Material valve II, 25, surge bunker, 26, discharge chute, 27, bulk machine, 28, chimney,
29th, tertiary-air pipe, 30, kiln tail smoke-box, 31, humidification system, 32, preheater, 33, dore furnace.
Embodiment
With reference to embodiment, the present invention is further elaborated.
As shown in the figure：A kind of method that production active lime is transformed using cement producing line, the specific following institute of production stage
State：
Step 1：The material produced needed for active lime is sent into 2 in air valve by belt feeder I 1, then passes through high temperature
Stop valve 3 is sent at cement preheater C5 tremie pipes, and subsequently into kiln tail smoke-box 30, material enters drying and preheating catabolic phase,
The hot gas temperature from kiln hood is 900 DEG C herein；
Step 2：Material in kiln tail smoke-box 30 enters rotary kiln 4, and coal dust is sprayed into by kiln hood coal injection burner 10 and turned round
Kiln 4, the electric brake plate valve 16 closed in tertiary-air pipe 29, kiln tail do not need Coal powder spray, decomposition temperature, the calcining heat point of material
It is not：800 ~ 900 DEG C, 1200 ~ 1350 DEG C, with the rotation of rotary kiln 4, material flows to the direction of grate-cooler 5, and material goes out revolution
Temperature during kiln 4 is 1000 ~ 1150 DEG C, and the temperature of auxiliary air is 700 ~ 1050 DEG C；
Step 3：Material after calcining goes out rotary kiln 4 and enters grate-cooler 5, under the cooling of cooling blower fan 6, with grate-cooler 5
Motion, the material for going out grate-cooler 5 are cooled to environment temperature, and the afterbody of grate-cooler 5 discharge EGT is 200 ~ 300 DEG C；
Step 4：The material for going out grate-cooler 5 enters tray conveyer 7, and cement clinker library is transported to through tray conveyer 7
Top, pushed up in storehouse and an electric three-way Material valve is set, lower lace conveyer II 9 separates with former cement system, belt conveyor
The material of II 9 conveyings delivers to the storage of active lime finished product and shipping workshop.
Produce raw material limestone of the material needed for active lime using production cement, the particle diameter of this lime stone for 5 ~
50mm, raw limestone are entered in air valve 2 by belt feeder 1, and cement preheater C5 tremie pipes are sent to by high temperature stop valve 3
Place, enters kiln tail smoke-box 30, now material initially enters drying and preheating catabolic phase, herein from kiln hood by C5 tremie pipes
Hot gas temperature is 900 DEG C, and subsequently into rotary kiln 4, with the rotation of rotary kiln 4, material constantly flows to the direction of grate-cooler 5
Dynamic, rotary kiln 4 can be divided into preheating zone, intermediate zone, clinkering zone, cooling zone by function here, and each band accounts for the length of rotary kiln 4
Ratio is respectively：35% ~ 50%, 10% ~ 25%, 20% ~ 30%, 5% ~ 10%, decomposition temperature, the calcining heat of material are respectively：800~
900℃、1200~1350℃.Coal dust sprays into rotary kiln 4 by kiln hood coal injection burner 10, now closes in tertiary-air pipe 29
Electric brake plate valve 16, kiln tail do not need Coal powder spray, and the temperature that now material goes out rotary kiln 4 is 1000 ~ 1150 DEG C, auxiliary air
Temperature is 700 ~ 1050 DEG C.Lime stone after calcining goes out rotary kiln 4 and enters grate-cooler 5, under the cooling of cooling blower fan 6, with comb
Cold 5 is moved, and the material for going out grate-cooler 5 is cooled to environment temperature, and the afterbody of grate-cooler 5 discharges EGT at 200 ~ 300 DEG C,
The material for going out grate-cooler 5 enters tray conveyer 7, and tray conveyer 7 is transported to cement clinker library top, and one three is set on storehouse top
Logical electric material valve, lower lace conveyer 9 separate with former cement system, and the material for going out belt feeder 9 delivers to active lime finished product
Storage and shipping workshop.
Waste gas caused by kiln tail during lime calcining, discharged along former cement system.Kiln tail high-temperature blower is opened in production
18, adjustment electrically operated valve II 17, electrically operated valve III 19, high-temperature blower 18 and kiln tail dust-precipitator 20 is obtained suitable work temperature
Degree, the air-flow of kiln tail smoke-box 30 gather dust along dore furnace 33, preheater 32, humidification system 31 through kiln tail high-temperature blower 18 into kiln tail bag
The dedusting of device 20, the gas after dedusting are discharged through kiln tail gas exhaust blower 21 from chimney 28.Flue gas along this road flow when, this road
On valve open entirely, other valve contract fullys.Cold blast sliding valve before kiln tail bag collector 20 can be according to the temperature of flue gas
Aperture is adjusted, the temperature into the gas of kiln tail bag collector 20 is controlled with this.The dedusting ash that kiln tail bag collector 20 is discharged enters
In FU machine for zipper III 22, subsequently into FU machine for zipper IV 23, exported in FU machine for zipper IV 23 and a threeway Material valve II is set
24, separated with former cement system.Surge bunker 25 is connect under threeway Material valve 24 II, material passes through discharge chute 26, bulk machine 27
Discharging, dedusting ash are dispatched from the factory with Automobile Transportation.
The afterbody waste gas of grate-cooler 4, discharged along former cement system.Electrically operated valve I 11 is opened, waste gas enters kiln head bag dust collector
12 dedustings, the gas after dedusting are discharged through kiln hood waste gas exhaust blower 13 from chimney 28.Flue gas along this road flow when, on this road
Valve open entirely, other valve contract fullys.Cold blast sliding valve before kiln head bag dust collector 12 can be adjusted according to the temperature of flue gas
Whole aperture, the temperature into the gas of kiln head bag dust collector 12 is controlled with this.The dedusting ash that kiln head bag dust collector 12 is discharged enters FU
Machine for zipper I 14, subsequently into FU machine for zipper II 15, it is sent into by FU machine for zipper II 15 in tray conveyer 7.
By 2500t/d new type nonaqueous cement production lines change the line of production production 400t/d active limes exemplified by, carry out calculate calculate with
Based on active lime technology Calculation, calculated with reference to cement industry, technical indicator is shown in accompanying drawing 2.2500t/d novel dries
Method cement producing line can change the line of production production 400 ~ 600t/d active limes, be counted based on the ability of rotary kiln during calculating
Calculate.From Figure 2 it can be seen that its technological parameter and parameter similar during production cement, system when its system capability is less than production cement
Ability, it is easy to produce control.
Claims (6)
- A kind of 1. method that production active lime is transformed using cement producing line, it is characterised in that the specific following institute of production stage State：Step 1：The material produced needed for active lime is passed through into belt feeder I（1）It is sent into air valve（2）, then pass through high temperature Stop valve（3）It is sent at cement preheater C5 tremie pipes, subsequently into kiln tail smoke-box（30）, material enter drying and preheating decompose rank Section, the hot gas temperature from kiln hood is 900 DEG C herein；Step 2：Kiln tail smoke-box（30）In material enter rotary kiln（4）, coal dust passes through kiln hood coal injection burner（10）Spray into back Rotary kiln（4）, close tertiary-air pipe（29）On electric brake plate valve（16）, kiln tail do not need Coal powder spray, the decomposition temperature of material, forges Burning temperature is respectively：800 ~ 900 DEG C, 1200 ~ 1350 DEG C, with rotary kiln（4）Rotation, material is to grate-cooler（5）Flow in direction Dynamic, material goes out rotary kiln（4）When temperature be 1000 ~ 1150 DEG C, the temperature of auxiliary air is 700 ~ 1050 DEG C；Material calcining mistake Waste gas caused by kiln tail in journey, discharged after being filtered by raw water mud exhaust treatment system, kiln tail high-temperature blower is opened in production（18）, Kiln tail smoke-box（30）Air-flow is along dore furnace（33）, preheater（32）, humidification system（31）Through kiln tail high-temperature blower（18）Into kiln Tail bag collector（20）Dedusting, the gas after dedusting is through kiln tail gas exhaust blower（21）From chimney（28）Middle discharge；Kiln tail bag is received Dirt device（20）The dedusting ash of discharge enters FU machine for zipper III（22）, FU machine for zipper IV（23）, in FU machine for zipper IV（23）Outlet One threeway Material valve II is set（24）, under connect surge bunker（25）, separated with former cement system, dedusting ash is through discharge chute（26） It is delivered to bulk machine（27）Shipment is dispatched from the factory；Step 3：Material after calcining goes out rotary kiln（4）Into grate-cooler（5）, in cooling blower fan（6）Cooling under, with cooling Machine（5）Motion, goes out grate-cooler（5）Material be cooled to environment temperature, grate-cooler（5）Afterbody discharge EGT be 200 ~ 300℃；Step 4：Go out grate-cooler（5）Material enter tray conveyer（7）, through tray conveyer（7）It is transported to cement clinker library Top, pushed up in storehouse and a threeway Material valve I is set（8）, lower lace conveyer II（9）Separated with former cement system, Belt Conveying Machine II（9）The material of conveying delivers to the storage of active lime finished product and shipping workshop.
- 2. the method for cement producing line transformation production active lime is utilized as claimed in claim 1, it is characterised in that：The step Rotary kiln in rapid two（4）Preheating zone, intermediate zone, clinkering zone and cooling zone can be divided into by function, each band accounts for rotary kiln（4）Length Ratio is respectively：35% ~ 50%, 10% ~ 25%, 20% ~ 30% and 5% ~ 10%.
- 3. the method for cement producing line transformation production active lime is utilized as claimed in claim 1, it is characterised in that：The step Grate-cooler in rapid three（5）Afterbody waste gas, is discharged along former cement system, and waste gas enters kiln head bag dust collector（12）Dedusting, after dedusting Gas through kiln hood waste gas exhaust blower（13）From chimney（28）Middle discharge, kiln head bag dust collector（12）The dedusting ash of discharge enters FU Machine for zipper I（14）, FU machine for zipper II（15）, through FU machine for zipper II（15）Into tray conveyer（7）.
- 4. the method for cement producing line transformation production active lime is utilized as claimed in claim 1, it is characterised in that：The step Threeway Material valve I in rapid four（8）For electric three-way Material valve.
- 5. the method for cement producing line transformation production active lime is utilized as claimed in claim 1, it is characterised in that：The step The material needed for active lime is produced in rapid one using the raw material limestone of production cement, the particle diameter of this lime stone is 5 ~ 50mm.
- 6. the method for cement producing line transformation production active lime is utilized as claimed in claim 1, it is characterised in that：Described three Logical Material valve II（24）For electric three-way Material valve.
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| CN105823330B (en) * | 2016-03-29 | 2018-01-19 | 北京建筑材料科学研究总院有限公司 | A kind of multifunction cement rotary kiln production system and its application method |
| CN107084616B (en) * | 2017-03-30 | 2019-04-12 | 郭树成 | A kind of rotary system manufacturing carbide raw material |
| CN110160366B (en) * | 2019-06-20 | 2020-05-05 | 四川省兴威钒业有限公司 | Grog cooling system reforms transform equipment |
| CN110590192B (en) * | 2019-10-15 | 2022-04-19 | 石家庄新华能源环保科技股份有限公司 | Heat accumulating type lime rotary kiln |
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| WO2011000430A1 (en) * | 2009-07-03 | 2011-01-06 | Abb Ab | Method and device for controlling a process for burning a lime containing mixture to burnt lime |
| CN102603216B (en) * | 2012-02-29 | 2013-09-04 | 中信重工机械股份有限公司 | Active lime calcining system with precalciner and active lime calcining method |
| CN103496863B (en) * | 2013-09-28 | 2016-03-02 | 内蒙古工业大学 | A kind of production method of oxygen enrichment strengthening brown coal calcination of cement clinker |
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Effective date of registration: 20190719 Address after: 471003 Jianshe Road, Jianxi, Henan, No. 206, Patentee after: CITIC Heavy Industry Engineering Technology Co., Ltd. Address before: 471003 Jianshe Road, Jianxi, Henan, No. 206, Patentee before: Citic Heavy Industries Co., Ltd. |