CN201660563U - Shaft furnace of powdered coal gasification limekiln - Google Patents
Shaft furnace of powdered coal gasification limekiln Download PDFInfo
- Publication number
- CN201660563U CN201660563U CN2010201400390U CN201020140039U CN201660563U CN 201660563 U CN201660563 U CN 201660563U CN 2010201400390 U CN2010201400390 U CN 2010201400390U CN 201020140039 U CN201020140039 U CN 201020140039U CN 201660563 U CN201660563 U CN 201660563U
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- coal
- heater
- preheating chamber
- furnace
- powdered coal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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Abstract
The utility model relates to a shaft furnace of a powdered coal gasification limekiln. The main body of the shaft furnace comprises a furnace body, a feeding hole and a discharging hole and the accessory body comprises a feeding skew bridge, a dust remover, a powdered coal conveying blower, a cooling blower and a quantitative powdered coal spraying machine; the shaft furnace is characterized in that the feeding hole is formed at the top of the furnace body, a gas collecting hood below the feeding hole is connected with an exhaust duct, and a dust removing blower is connected with the dust remover; a distributor is arranged at the bottom of the furnace body, 2 to 3 layers of horizontal platforms are arranged on the outer side wall of the furnace body, a preheating chamber is arranged on the platforms, the preheating chamber is communicated with the interior of the furnace body, a coal spraying nozzle is arranged on the preheating chamber, the powdered coal conveying blower is arranged on the lower layer of platform, the air outlet of the powdered coal conveying blower is connected with a coal conveying air pipe, both the coal spraying nozzles of the furnace body and the preheating chamber are arranged on the coal conveying air pipe, the quantitative powdered coal spraying machine is arranged below the furnace body, and the quantitative powdered coal spraying machine is connected with the powdered coal conveying blower through the pipeline. The problems of the prior art that the burning zone of the furnace body is unstable and the drifting range of the combustion zone is wide are solved; the heat produced on the rear burning zone of the shaft furnace can be effectively collected and utilized, the discharging of wastes is reduced and the outcome and the qualification rate of lime product are improved.
Description
Technical field
Utility model relates to a kind of lime production unit.
Background technology
The production of primary lime is with Wingdale and fuel layering lay, and one week of calcining of igniting both got; Be to adopt equipment such as mechanize, semi-mechanization shaft kiln and rotary kiln, fluidized kiln to produce now, the corresponding shortening of calcination time, rotary kiln is produced lime and is only needed 2-4 hour, than enhancing productivity more than 5 times with native shaft kiln production.In recent years, occur the Remarkable Energy Saving technology and the equipment such as short rotary kiln of cross-flow type, double slanted formula and oil firing annular shaft kiln and band preheater again, fuel is also expanded as coal coke, heavy oil or liquefied gas etc.But these device, methods mostly have various shortcomings.For example: the burning type shaft furnace, body of heater can't solve the problem of stable burning, and calcining section drift scope is big, makes the poor stability of its quality product; Gas type shaft furnace production cost height and production site are restricted; The product application of rotary kiln is limited in scope and production unit input cost height, and is many to the restriction of burning demand, the energy consumption height, and the powder thing is discharged many.Summary of the invention
The purpose of this invention is to provide a kind of solution body of heater stable burning under the prerequisite that reduces energy consumption, minimizing waste discharge, improve the calcining zone drift, the coal dust gasification limestone kiln shaft furnace that improves the quality of products.
The objective of the invention is to realize by following mode:
Coal dust gasification limestone kiln shaft furnace, main body comprises body of heater, opening for feed, discharge port; Attached body comprises, material loading skew bridge, fly-ash separator, the powder blower fan of delivering coal, cooling blower, quantitative Coal powder spray machine, it is characterized by: the top of body of heater is an opening for feed, there is gas skirt the opening for feed below, there is venting port the gas skirt side, gas exhaust duct one end connects venting port, and the other end connects the blast inlet of dedusting fan, and the air outlet of dedusting fan is connected with fly-ash separator; Discharge port is arranged at the bottom of body of heater, in the body of heater of discharge port top tripper is housed, body of heater outer side wall 1/3rd places from bottom to up has 2 layers of levelling bench, 4.5 meters at interval on platform, the outside along sidewall of the furnace body on the upper platform is evenly equipped with several preheating chambers, each preheating chamber is cavity independently in the body of heater outside, preheating chamber and body of heater inside link, preheating chamber coal powder injection mouth is arranged on the preheating chamber, body of heater coal powder injection mouth is arranged on the side wall of furnace, be connected preheating chamber airduct and body of heater airduct respectively on preheating chamber coal powder injection mouth and the body of heater coal powder injection mouth, the powder blower fan of delivering coal on lower floor's platform, the air outlet of the powder blower fan of delivering coal connects the airduct of delivering coal, and preheating chamber airduct and body of heater airduct also are connected on the airduct of delivering coal, there is quantitative Coal powder spray machine the body of heater below, and quantitatively the Coal powder spray machine links to each other with the powder blower fan of delivering coal by pipeline.
Advantage of the present invention is:
1. by the Coal powder spray burning, realized the burning of solid fuel gaseous state.
2. igniting has guaranteed calcining zone incendiary stability outside the preheating chamber road, can light a fire at any time and cease combustion; And without prepurging, there is not the prepurging expense during igniting.
3. the funneling effect when tripper has changed original kiln discharging, i.e. central area sedimentation is slow, and the kinestate that peripheral sedimentation is fast makes no longer artificial separation of product, and has improved lime product qualification rate and output.
4. fuel is not had particular requirement, can make full combustion of fuel, improved 40%, and reduce the pollution of flue dust and the discharging of refuse than former method fuel value.
5. equipment distribution consumption is 1/5th of an external sophisticated equipment.
Description of drawings
Fig. 1, be one-piece construction synoptic diagram of the present utility model.
Embodiment
Embodiment:
Coal dust gasification limestone kiln shaft furnace, main body comprise body of heater 4, opening for feed 2, discharge port; Attached body comprises, material loading skew bridge 1, fly-ash separator 23, the powder blower fan 13 of delivering coal, cooling blower 19, quantitative Coal powder spray machine 15, it is characterized by: the top of body of heater 4 is opening for feeds, there is gas skirt 3 opening for feed 2 belows, there is venting port 20 gas skirt 3 sides, gas exhaust duct 21 1 ends connect venting port 20, and the other end connects the blast inlet of dedusting fan 22, and the air outlet of dedusting fan 22 is connected with fly-ash separator 23; Discharge port 16 is arranged at the bottom of body of heater 4, in the discharge port 16 top bodies of heater tripper 12 is housed, body of heater 4 outer side walls 1/3rd places from bottom to up have 2 layers of levelling bench, 4.5 meters at interval on platform, the outside along sidewall of the furnace body on the upper platform 25 is evenly equipped with several preheating chambers 7, each preheating chamber 7 is cavitys independently in the body of heater outside, preheating chamber 7 and body of heater 4 inside link, preheating chamber coal powder injection mouth 10 is arranged on the preheating chamber 7, body of heater coal powder injection mouth 6 is arranged on the sidewall of body of heater 4, be connected preheating chamber airduct 9 and body of heater airduct 5 respectively on preheating chamber coal powder injection mouth 10 and the body of heater coal powder injection mouth 6, the powder blower fan 13 of delivering coal on lower floor's platform 26, the air outlet of powder blower fan 13 of delivering coal connects the airduct 14 of delivering coal, preheating chamber airduct 9 and body of heater airduct 5 also are connected on the airduct 14 of delivering coal, there is quantitative Coal powder spray machine 15 the body of heater below, and quantitatively Coal powder spray machine 15 links to each other with the powder blower fan 13 of delivering coal by pipeline 18.
Protrude a flute profile air ring 11 between the two-layer platform outside the body of heater lateral, be distributed with the hot gas exchange hole on the air ring 11, the hot gas exchange hole links to each other with cooling blower 11.
Shaft furnace whole workflow in the utility model coal dust gasification limestone kiln is: preheating--→ calcining--calcining of → back---→ cooling.
By material loading skew bridge 1 material is put into opening for feed 2, the flue dust of generation is collected through flue 21 and dedusting fan 22 by gas skirt 3 thus and is siphoned away by fly-ash separator 23, utilizes to remove the smoke contamination discharging, and recovery can utilize waste gas.The support lower margin 17 of body of heater 4 is connected with ground, and discharge port 16 is arranged at the bottom of body of heater 4, and discharge port 16 is equipped with tripper 12, and tripper 12 is the tubular vertex of a cone.Body of heater discharge port 16 tops are air rings 11, air ring 11 is that the flute profile ring that pore inner identical with body of heater 4 and pore outer cover is formed, be distributed with the hot gas exchange hole on this flute profile ring, the hot gas exchange hole links to each other with cooling blower 19, be preheating chamber 7 above the air ring 11, the position of preheating chamber 7 is 35% of body of heater 4 height.Preheating chamber 7 is cavitys independently in the body of heater outside, this cavity communicates with body of heater 4 inside, fire door and nozzle are arranged on the preheating chamber 6, Coal powder spray mouth band is arranged at preheating chamber 6 tops, have Coal powder spray mouth, Coal powder spray mouth to communicate with stove shaft furnace inside on the Coal powder spray mouth band, induced draft fan 8 communicates with preheating chamber 6, Coal powder spray mouth by airduct 5, and connects quantitative Coal powder spray machine 10 under the body of heater, quantitatively Coal powder spray machine 10 links to each other with the Coal powder spray mouth by pipeline, adjusts quantitative coal supply by temperature with electrical control cabinet 17.
Promptly, earlier enter and place shaft furnace in from the opening for feed hopper Wingdale raw material, kindling material is put into preheating chamber, the realization kiln is lighted a fire outward, because the structure of preheating chamber is a cavity that is connected with body of heater, along with the preheating chamber temperature raises, temperature of charge also increases in the body of heater, when temperature is elevated to 800 ℃, by Coal powder spray mouth Coal powder spray in the utility model body of heater, coal dust directly burns, and forms calcining zone, the heat of calcining zone can be controlled by the Coal powder spray amount, induced draft fan becomes the residual heat collection of discharge port finished product to send into the Coal powder spray mouth by airduct behind the hot blast and the Coal powder spray mouth is combustion-supporting by air ring, and by regulating Coal powder spray machine speed of feed, the Coal powder spray machine is by pipeline and Coal powder spray mouth, nozzle on the Coal powder spray mouth preheating chamber communicates, coal dust is sent in each Coal powder spray mouth, material will be detained for some time in kiln before the discharging by behind the calcining zone, forms the back calcination process, make material utilize the waste heat of self will react more thorough after calcining, remaining Wingdale becomes lime.Collection chamber connects with the fly-ash separator airduct by suction opening, and the discarded back that purifies is recycled.
The utility model coal dust gasification Lime kiln kiln has solved present body of heater calcining zone instability, the problem that zone of combustion drift scope is big; 45% of body of heater height is got in the preheating zone design, increase by 20% than other bodies of heater, can better collect tail gas heat quantity, calcining zone is stable 25% of the body of heater height of getting, cooling zone is got 30% of body of heater height, the heat that can effective collection utilize shaft furnace to produce at the back calcining zone, and hot blast can recycle, reduce waste discharge, improve the output and the qualification rate of lime product.
Claims (4)
1. coal dust gasification limestone kiln shaft furnace, main body comprises body of heater, opening for feed, discharge port; Attached body comprises, material loading skew bridge, fly-ash separator, the powder blower fan of delivering coal, cooling blower, quantitative Coal powder spray machine, it is characterized by: the top of body of heater is charging, there is venting port side, body of heater top, gas exhaust duct one end connects venting port, the other end connects the blast inlet of dedusting fan, and the air outlet of dedusting fan is connected with fly-ash separator; The body of heater inner bottom part has tripper, body of heater outer side wall 1/3rd places from bottom to up has the layer 2-3 levelling bench, platform is 3-5 rice at interval, the outside along sidewall of the furnace body on the platform of middle level is evenly equipped with several preheating chambers, in the middle of the preheating chamber is cavity, the inner UNICOM of preheating chamber and body of heater, preheating chamber coal powder injection mouth is arranged on the preheating chamber, body of heater coal powder injection mouth is arranged on the side wall of furnace, be connected preheating chamber airduct and body of heater airduct respectively on preheating chamber coal powder injection mouth and the body of heater coal powder injection mouth, the powder blower fan of delivering coal on lower floor's platform, airduct one end of delivering coal is connected with the air outlet of the powder blower fan of delivering coal, body of heater coal powder injection mouth and preheating chamber coal powder injection mouth also are connected on the airduct of delivering coal, and there is quantitative Coal powder spray machine the body of heater below, and quantitatively the Coal powder spray machine links to each other with the powder blower fan of delivering coal by pipeline.
2. coal dust gasification according to claim 1 limestone kiln shaft furnace is characterized in that: protrude a flute profile air ring between the two-layer platform outside the body of heater lateral.
3. coal dust gasification according to claim 2 limestone kiln shaft furnace is characterized in that: be distributed with the hot gas exchange hole on the air ring.
4. coal dust gasification according to claim 1 limestone kiln shaft furnace is characterized in that: described tripper is the tubular vertex of a cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201400390U CN201660563U (en) | 2010-03-25 | 2010-03-25 | Shaft furnace of powdered coal gasification limekiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201400390U CN201660563U (en) | 2010-03-25 | 2010-03-25 | Shaft furnace of powdered coal gasification limekiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660563U true CN201660563U (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201400390U Expired - Fee Related CN201660563U (en) | 2010-03-25 | 2010-03-25 | Shaft furnace of powdered coal gasification limekiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201660563U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829356A (en) * | 2020-08-05 | 2020-10-27 | 河南省德耀节能科技股份有限公司 | Submerged arc furnace and furnace gas and waste heat recycling system of furnace body matched with submerged arc furnace |
| CN113372025A (en) * | 2021-08-13 | 2021-09-10 | 山东万达环保科技有限公司 | Environment-friendly lime production line |
-
2010
- 2010-03-25 CN CN2010201400390U patent/CN201660563U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829356A (en) * | 2020-08-05 | 2020-10-27 | 河南省德耀节能科技股份有限公司 | Submerged arc furnace and furnace gas and waste heat recycling system of furnace body matched with submerged arc furnace |
| CN113372025A (en) * | 2021-08-13 | 2021-09-10 | 山东万达环保科技有限公司 | Environment-friendly lime production line |
| CN113372025B (en) * | 2021-08-13 | 2021-12-07 | 山东万达环保科技有限公司 | Environment-friendly lime production line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130325 |