CN204151240U - There is the totally-enclosed mechanical automation lime cleaner production shaft furnace of bulging air inducing and dust-removal and desulfurizing - Google Patents
There is the totally-enclosed mechanical automation lime cleaner production shaft furnace of bulging air inducing and dust-removal and desulfurizing Download PDFInfo
- Publication number
- CN204151240U CN204151240U CN201420642575.9U CN201420642575U CN204151240U CN 204151240 U CN204151240 U CN 204151240U CN 201420642575 U CN201420642575 U CN 201420642575U CN 204151240 U CN204151240 U CN 204151240U
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- China
- Prior art keywords
- kiln
- kiln body
- flue
- lime
- concrete structure
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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
Abstract
Have the totally-enclosed mechanical automation lime cleaner production shaft furnace of bulging air inducing and dust-removal and desulfurizing, kiln body top is provided with feeding mouth, is provided with steel and concrete structure kiln lid above feeding mouth; Described material bin and distributor are arranged in steel and concrete structure kiln lid, and material bin lower end connects distributor, and described steel and concrete structure kiln lid is positioned at kiln body top; The top of kiln body and lower inner diameter are shrink along inwall to feeding mouth and discharge port direction, and kiln body stage casing two inwall is for vertically to be arranged in parallel; The lower end of kiln body is provided with pedestal, and the side of pedestal offers wicket, and gas blower is installed on wicket ingress.The design of the utility model kiln body inner bag becomes a round and smooth fluid camber line to meet the chemical reaction requirement of calcium carbonate in kiln, top-down physical motion requirement in the kiln that can meet again Wingdale and finished product lime, lime production flue gas and calcic dust send into thionizer through gravitational precipitator by induced draft fan, integration dust-removing desulfurization fume qualified discharge.
Description
Technical field
The utility model belongs to lime shaft kiln technical field, specifically a kind of totally-enclosed mechanical automation lime cleaner production shaft furnace with bulging air inducing and dust-removal and desulfurizing.
Background technology
At present, how to determine in prior art that the best liner of shaft kiln remains a technical barrier, in general, successful experience and the parameter of actual production factory can only be used for reference; According to investigating, concluding Integrated comparative, finding the liner geometry of Chinese new-type shaft kiln.Size and the following rule of the large multiple coincidence of each several part proportionlity: the charging opening diameter of (1) kiln is greater than kiln ash output hole diameter, and calcining zone diameter is greater than charging opening diameter, cooling zone maximum diameter equals or slightly larger than zone of combustion maximum diameter.(2) diameter of kiln is than 3.5-4, is generally no more than 4.5.(3) the charging opening diameter of kiln is about 1/2 of kiln profit maximum inner diameter, and is generally not more than.(4) unloading grey diameter is 1.5-1.6 meters, distance floor level about 2 meters.3-4 logical grey hole is generally opened, for solving the difficulty of not easily unloading ash before kiln before cinder-discharging port.(5) supporting item angle of unloading grey grate (umbrella shape grate) is 80-90.(6) preheating, calcining and cooling three band respectively account for builds the total effectively high ratio of kiln: preheating zone accounts for 35-45%, and calcining zone accounts for 35-30%, cooling zone accounts for 30-25%.(7) effective capacity of kiln scope is advisable with 150-270 cubic meter, too greatly, occurs that raw burn situation is more; Too little, thermosteresis is large, and coal consumption increases.(8) the truncated cone body of preheating zone is long compared with the truncated cone body of calcining zone, but bottom cone angle is little compared with calcining zone, and the former is generally at 81-82., the latter is at 87-88.(9) position of kiln maximum diameter is generally that to be located at the calcining zone contact that is connected with cooling zone good.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, the design of a kind of whole kiln body inner bag is provided to become a round and smooth fluid camber line to meet the chemical reaction requirement of calcium carbonate in kiln, the Novel shaft kiln that in the kiln that can meet again Wingdale and finished product lime, top-down physical motion requires.
The purpose of this utility model is achieved in that and includes hopper, distributor, steel and concrete structure kiln lid, Rotary grate, flue, kiln larynx backplate, kiln body, inspection window, slaking storehouse, gas blower, automatic discharging machine, umbrella shape grate, grate sleeper beam, gear ash bucket, induced draft fan, wicket, kiln body top is provided with feeding mouth, is provided with steel and concrete structure kiln lid above feeding mouth; Described material bin and distributor are arranged in steel and concrete structure kiln lid, and material bin lower end connects distributor, and described steel and concrete structure kiln lid is positioned at kiln body top; One side on kiln body top is provided with flue, is also provided with induced draft fan in flue, and the exit of flue is provided with Rotary grate, and flue is positioned at the below of steel and concrete structure kiln lid; The sidewall of kiln body both sides is provided with some inspection windows, and described inspection window is distributed on kiln body two side uniformly; The top of kiln body and lower inner diameter are shrink along inwall to feeding mouth and discharge port direction, and kiln body stage casing two inwall is for vertically to be arranged in parallel; The bottom of kiln body is also provided with ash output hole, and ash output hole is positioned at the bottom of umbrella shape grate; The lower end of kiln body is provided with pedestal, and the side of pedestal offers wicket, and gas blower is installed on wicket ingress; Also be provided with slaking storehouse and automatic discharging machine in described pedestal, described automatic discharging machine is arranged at the lower end in slaking storehouse.
The ingress on described kiln body top is also provided with kiln larynx backplate, and described kiln larynx backplate upper end connects with distributor.
Be provided with gear ash bucket between the discharge port of kiln body and slaking storehouse, described grate sleeper beam is between discharge port and gear ash bucket.
The building height of kiln body is 25m, effectively the high-order 15m of a surname, and ash output hole height is 3m, and feeding mouth diameter is 2.8m, and ash output hole diameter is 1.7m, and the maximum diameter of kiln body inner bag is 6m, and useful volume is 260 cubic metres.
Kiln body top flue is ring-shaped flue, is also provided with chimney and is connected with described flue, and the height of chimney is 15m.
The utility model has the advantage of: the design of whole kiln body inner bag becomes a round and smooth fluid camber line to meet the chemical reaction requirement of calcium carbonate in kiln, top-down physical motion requirement in the kiln that can meet again Wingdale and finished product lime; Energy consumption is low, and rate of burning till is high: structure is simple, convenient management; Raw materials and fuel strong adaptability, raw coal that generally only need be less expensive: maintaining is simple, expense is low, unit product stable cost is few; Reduced investment, the construction period is short, and the speed that takes effect is fast; Unit cost is low, good in economic efficiency, and the payback period is short.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is workflow schematic diagram of the present utility model;
In figure, 1 is material bin; 2 is distributor; 3 is steel and concrete structure kiln lid; 4 is Rotary grate; 5 is flue; 6 is kiln larynx backplate; 7 is kiln body; 8 is umbrella shape grate; 9 is grate sleeper beam; 10 is gear ash bucket; 11 is slaking storehouse; 12 is automatic discharging machine; 13 is wicket; 14 is gas blower; 15 is inspection window.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
(1) principles of chemistry
Lime is also called calcium oxide (Ca0), produce the main raw material of lime all to contain calcium carbonate CaC03,) be major ingredient, limestone can be referred to as, calcium carbonate CaC03 in limestone) content higher, the lime quality produced is better, for main fuel made by hard coal in lime production, Wingdale is done high-temperature calcination and is generated lime in kiln, and its chemical equation is:
(CaC03 :) Wingdale+coal---(ca0) lime+(C02) carbonic acid gas
(2) kiln type principal dimension is determined
According to the determination principle of energy-saving shaft kiln geometrical dimension, this energy-saving lime stands
Effective a surname's height of kiln design is 15m. ash output hole height 3m, and reinforced is highly 7m, and building general height is 25m.The back cut diameter of shaft kiln is φ 2.8m, bottom deslagging mouth diameter is φ 1.7m, inner bag maximum diameter stopped by kiln is φ 6m, vertical effective capacity of kiln is 260 cubic metres of rice, be provided with annular cigarette at upper kilneye to lead to and 15m chimney, the bottom of ash discharge is furnished with gas blower, and top is furnished with induced draft fan, lime production flue gas and calcic dust send into thionizer through gravitational precipitator by induced draft fan, integration dust-removing desulfurization fume qualified discharge.Employing taken out down the form sent thus reach the process of material and gas flow counterflow heat exchange, whole kiln body inner bag adopts flower vase type kiln shape, thus form a round and smooth fluid camber line and meet the chemical reaction requirement of calcium carbonate (CaCO3) in kiln, top-down physical motion requirement in the kiln that can meet again Wingdale and finished product lime.
(2) main principle of work
From this shaft kiln on the whole according to counter-current principle work, due to the character of material and air-flow generation counter flow heat exchange process, four regions can be divided in kiln, that is: calcining zone, preheating zone one firing zone one cooling zone.Four regions respectively account for 1/4H in the virtual height of kiln, material (Wingdale, coal) adds in kiln through four regions to 1.7 meter kiln discharge from 17 meters, wind (oxygen) enters in kiln combustion-supporting from bottom to top from 1.7 meters of ash output holes, thus completes the process that material and air-flow generation backheating exchange.
Preheating zone: on the top of kiln, rise from Duan Shao district below hot gas flow material material carry out preheating and drying, and air-flow progressively cools, and that is normal temperature material and hot gas flow here exchange.Air-flow in calcining zone temperature be out about 90 DEG C, the starting point of this namely preheating zone, a part of coal ignition here, lime top layer starts to decompose, and produces kiln gas simultaneously.
Calcining zone: the upper middle part being positioned at kiln, calcine beginning when material in kiln is issued to kiln temperature 850 ~ 900, most of gesture fuel takes fire here, and kiln temperature is progressively elevated to the decomposition rate meeting calcium carbonate, generates calcium oxide (lime).This district is the main chemical reactions that fuel and lime fierceness are decomposed.
Firing zone: the middle and lower part being positioned at kiln, goes the fierce Wingdale decomposed will complete its total overall reaction process from calcining and must possess two essential condition: the temperature that (1) adapts to.(2) time enough.These two conditions have been come by firing zone, ensure that the Wingdale got off from calcining zone completes total overall reaction here, that improves lime burns till rate, the lime completing decomposition continues down motion and runs into the air that bottom coohng district enters, when being cooled to 350 DEG C ~ 800 DEG C, namely be equivalent to the terminal of firing zone, the calcium carbonate if any remnants just can not continue to have decomposed to this.
Cooling zone: the bottom being positioned at kiln, the starting point of cooling zone is exactly the place that kiln fuel stops burning, and the lime extending downwardly into umbrella shape stove itself also has very large heat to enter cooling zone cooling, and the heat of oneself is come to enter air bottom preheating kiln, rise to combustion zone and strengthen combustion-supporting raising heat utilization rate, reduce energy consumption.
In a word, the whether stable key being heat and producing in four regions in kiln. the appropriate location of Reasonable adjustment each region shaft kiln will be come through all respects. thus improve the quality of products, reduce costs, create higher benefit.
The beneficial effects of the utility model are, 1. energy consumption is low, and energy-saving effect is remarkable.Ton lime consumption mark coal is all below 125 kilograms, and good ton lime consumption coal is on average about 120 kg, and best has 115 kilograms.2. lime quality is stablized, and rate of burning till is high, and improving 5-15% than general general shaft kiln can reach more than 90%, and good reaches more than 95%.3. the good heat insulating of kiln, in kiln, section calcining temperature is even, and thermo-efficiency is high, can be greater than 65%; 4. output is high, unit volume output reach 400-500 kilogram/m3 LJ with.5. reclaim C02 concentration high, be conducive to lime product deep processing.What general general shaft kiln recovery C02 gas concentration was good also only has 23-24%, and most of shaft kiln also cannot reclaim.Energy saving and environment friendly lime vertical kiln reclaims C02, and gas concentration can reach 28-20% under normal production scenarios.The comprehensive utilization energy of lime product deep processing can be improved.6. energy saving and environment friendly lime vertical kiln is provided with the operation room of reinforced concrete structure, the charging equipment of mechanize has been installed, and systematic ventilation smoke exhaust purification facility, alleviate the labour intensity of workman, the Exposure to Sunlight of changing over, drench with rain, production environment that smoke fire is roasting, prevented and treated environmental pollution, improve workman's labor operations condition, ensure that workman's is healthy: 7. energy saving and environment friendly lime vertical kiln is in the similar kiln type of Present Domestic, overall economics index occupies first place, and has good economic benefit.
Last it is noted that obviously, above-described embodiment is only for the application's example is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among the protection domain of the application's type.
Claims (5)
1. there is a totally-enclosed mechanical automation lime cleaner production shaft furnace for bulging air inducing and dust-removal and desulfurizing, include hopper, distributor, steel and concrete structure kiln lid, Rotary grate, flue, kiln larynx backplate, kiln body, inspection window, slaking storehouse, gas blower, automatic discharging machine, umbrella shape grate, grate sleeper beam, gear ash bucket, induced draft fan, wicket, it is characterized in that, kiln body top is provided with feeding mouth, is provided with steel and concrete structure kiln lid above feeding mouth; Described material bin and distributor are arranged in steel and concrete structure kiln lid, and material bin lower end connects distributor, and described steel and concrete structure kiln lid is positioned at kiln body top; One side on kiln body top is provided with flue, is also provided with induced draft fan in flue, and lime production flue gas and calcic dust send into thionizer through gravitational precipitator by induced draft fan, and the exit of flue is provided with Rotary grate, and flue is positioned at the below of steel and concrete structure kiln lid; The sidewall of kiln body both sides is provided with some inspection windows, and described inspection window is distributed on kiln body two side uniformly; The top of kiln body and lower inner diameter are shrink along inwall to feeding mouth and discharge port direction, and kiln body stage casing two inwall is for vertically to be arranged in parallel; The bottom of kiln body is also provided with ash output hole, and ash output hole is positioned at the bottom of umbrella shape grate; The lower end of kiln body is provided with pedestal, and the side of pedestal offers wicket, and gas blower is installed on wicket ingress; Also be provided with slaking storehouse and automatic discharging machine in described pedestal, described automatic discharging machine is arranged at the lower end in slaking storehouse.
2. shaft furnace according to claim 1, is characterized in that, the ingress on described kiln body top is also provided with kiln larynx backplate, and described kiln larynx backplate upper end connects with distributor.
3. shaft furnace according to claim 1 and 2, is characterized in that, is provided with gear ash bucket between the discharge port of kiln body and slaking storehouse, and described grate sleeper beam is between discharge port and gear ash bucket.
4. shaft furnace according to claim 1 and 2, is characterized in that, the building height of kiln body is 25m, the high-order 15m of effective a surname, ash output hole height is 3m, and feeding mouth diameter is 2.8m, ash output hole diameter is 1.7m, and the maximum diameter of kiln body inner bag is 6m, and useful volume is 260 cubic metres.
5. shaft furnace according to claim 1 and 2, is characterized in that, kiln body top flue is ring-shaped flue, is also provided with chimney and is connected with described flue, and the height of chimney is 15m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642575.9U CN204151240U (en) | 2014-11-02 | 2014-11-02 | There is the totally-enclosed mechanical automation lime cleaner production shaft furnace of bulging air inducing and dust-removal and desulfurizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642575.9U CN204151240U (en) | 2014-11-02 | 2014-11-02 | There is the totally-enclosed mechanical automation lime cleaner production shaft furnace of bulging air inducing and dust-removal and desulfurizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204151240U true CN204151240U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420642575.9U Expired - Fee Related CN204151240U (en) | 2014-11-02 | 2014-11-02 | There is the totally-enclosed mechanical automation lime cleaner production shaft furnace of bulging air inducing and dust-removal and desulfurizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204151240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776905A (en) * | 2016-05-19 | 2016-07-20 | 大冶市环宇钙业科技有限公司 | Negative-pressure lime shaft kiln |
-
2014
- 2014-11-02 CN CN201420642575.9U patent/CN204151240U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776905A (en) * | 2016-05-19 | 2016-07-20 | 大冶市环宇钙业科技有限公司 | Negative-pressure lime shaft kiln |
| CN105776905B (en) * | 2016-05-19 | 2017-11-24 | 大冶市环宇钙业科技有限公司 | A kind of suction type lime shaft kiln |
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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 |
Granted publication date: 20150211 Termination date: 20181102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |