CN102942312B - Energy-saving environment-friendly lime shaft kiln - Google Patents
Energy-saving environment-friendly lime shaft kiln Download PDFInfo
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- CN102942312B CN102942312B CN201210350414.8A CN201210350414A CN102942312B CN 102942312 B CN102942312 B CN 102942312B CN 201210350414 A CN201210350414 A CN 201210350414A CN 102942312 B CN102942312 B CN 102942312B
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- kiln
- machine
- preheating chamber
- radiant
- burner hearth
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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 invention discloses an energy-saving environment-friendly lime shaft kiln, which comprises a kiln body, an automatic feeding machine, a kiln top distributing machine, a kiln bottom automatic unloading machine and a desulfurization dust collector connected with a kiln top exhaust pipe. The kiln body from top to bottom is provided with a preheating chamber, a radiation combustor and a high-temperature hearth; and an opening and closing type distributing device is arranged between the preheating chamber and the radiation combustor; an annular large-caliber heat recovery pipe is arranged outside the radiation combustor, and two pipe ports of the heat recovery pipe respectively communicate with the bottom of the preheating chamber and the upper part of high-temperature hearth; a coal injection machine is arranged outside the radiation combustor and the high-temperature hearth; an injection nozzle of the coal injection machine communicates with the radiation combustor; an air guide pipe of the coal injection machine communicates with the high-temperature hearth. he invention has reasonably designed structure, is easy for automation operation, changes a multifuel combustion mode of coal in a traditional shaft kiln, and solves the problems in the prior art, such as multifuel combustion mode of coal, low calorific value utilization, and serious pollution caused by smoke and dust.
Description
Technical field
The invention belongs to energy-conserving and environment-protective lime burner furnace technical field, be specifically related to a kind of energy-conserving and environment-protective lime shaft kiln.
Background technology
The energy-conserving and environment-protective limekiln of prior art, comprises at the bottom of kiln body, automatic charging machine, kiln top material distributing machine, kiln automatic ash-discharging machine and ejects with kiln the desulfurizing dust-collector that smoke pipe is communicated with.The lime burner furnace of this structure, all adopts coal charge multifuel combustion, and utilization rate of heat value is low, and flue gas and dust pollution are serious, and labour intensity is large, poor product quality, and mechanization degree is low, and product cost is high, cannot reach the energy-saving and emission-reduction requirement of the market demand and national industrial policies.The reasonable use of fuel has simultaneously become the main examination emphasis of production equipment, and the thermal efficiency of furnace equipment directly affects the comprehensive utilization of heat energy.
Summary of the invention
The object of the invention is to solve that prior art exists that coal charge multifuel combustion, utilization rate of heat value are low, flue gas and dust pollution is serious, labour intensity large, poor product quality, mechanization degree is low, product cost is high technical problem, provide a kind of energy-conserving and environment-protective automation lime shaft kiln, to make up the deficiencies in the prior art.
For achieving the above object, energy-conserving and environment-protective automation lime shaft kiln of the present invention, comprises at the bottom of kiln body, automatic charging machine, kiln top material distributing machine, kiln automatic ash-discharging machine and ejects with kiln the desulfurizing dust-collector that smoke pipe is communicated with; Its main points are in kiln body, to be from top to bottom provided with successively preheating chamber, radiant, high-temperature burner hearth, between preheating chamber and radiant, be provided with open-close type distributing device, the outside of radiant is provided with the annular heavy caliber recovery heat pipe that the two ends mouth of pipe is communicated with the bottom of preheating chamber and the top of high-temperature burner hearth respectively, the outside of radiant and high-temperature burner hearth is provided with coal powder injection machine, the nozzle of coal powder injection machine is communicated with radiant, and the induced duct of coal powder injection machine is communicated with high-temperature burner hearth.
For the reasonable utilization that the even preheating of material making in preheating chamber improves heat energy, the bottom of said preheating chamber is provided with donut cross wind-distributing pipe.
Described material distributing machine, open-close type distributing device, automatic ash-discharging machine adopt respectively air cylinder driven, and action fast accurately puts in place.
Described coal powder injection machine can utilize the mixed thing of blast furnace waste gas, natural gas, coal dust and coal gas to the torch firing in kiln.
Reasonable in design of the present invention, be convenient to automation mechanized operation, changed coal charge in traditional shaft furnace multifuel combustion mode, solved that prior art exists that coal charge multifuel combustion, utilization rate of heat value are low, flue gas and dust pollution is serious, labour intensity large, poor product quality, mechanization degree is low, product cost is high technical problem.
Appended drawings is structural representation of the present invention.
In figure 1, automatic charging machine 2, kiln top material distributing machine 3, preheating chamber 4, donut cross wind-distributing pipe 5, open-close type distributing device 6, desulfurizing dust-collector 7, annular heavy caliber reclaim automatic ash-discharging machine 11 at the bottom of heat pipe 8, radiant 9, high-temperature burner hearth 10, kiln, coal powder injection machine
The specific embodiment
With reference to the accompanying drawings, the present invention includes at the bottom of kiln body, automatic charging machine 1, kiln top material distributing machine 2, kiln automatic ash-discharging machine 10 and eject with kiln the desulfurizing dust-collector 6 that smoke pipe is communicated with; In kiln body, be from top to bottom provided with successively preheating chamber 3, radiant 8, high-temperature burner hearth 9, between preheating chamber 3 and radiant 8, be provided with open-close type distributing device 5, the outside of radiant 8 is provided with the annular heavy caliber recovery heat pipe 7 that the two ends mouth of pipe is communicated with the bottom of preheating chamber and the top of high-temperature burner hearth respectively, the outside of radiant and high-temperature burner hearth is provided with coal powder injection machine 11, the suction pipe of coal powder injection machine 11 is communicated with radiant 8, and the blast pipe of coal powder injection machine 11 is communicated with high-temperature burner hearth 9; The bottom of preheating chamber 3 is provided with donut cross wind-distributing pipe 4.
Operation principle of the present invention: building stones are through automatic charging machine 1, kiln top material distributing machine 2, preheating chamber 3, open-close type distributing device 5, radiant 8 enters high-temperature burner hearth 9, until high-temperature burner hearth 9, entered after material, close open-close type distributing device 5, and then carry building stones to be stored in preheating chamber 3, until preheating chamber 3, entered after material, close again kiln top material distributing machine 2, open coal powder injection machine to the interior igniting coal powder injection of high-temperature burner hearth 9, burned flame enters 9 pairs of building stones of high-temperature burner hearth and carries out roasting, do not have the flue gas of completing combustion and burnt grain to enter radiant 8 and carry out again second-time burning, make fuel fully burning in radiant.Clean-burning hot gas enters 3 pairs of building stones of preheating chamber from annular heavy caliber recovery heat pipe 7 and carries out preheating, then enters desulfurizing dust-collector 6 through the smoke pipe on kiln top, further desulfurization and dedusting.Roasting is complete, and by the air blast at the bottom of kiln, radially cloth wind is cooling, coolingly by automatic ash-discharging machine 10, unloads ash.Then carrying out next round operation, so circulation.
The present invention changes over the direction of motion of high-temperature furnace gas identical with material movement direction, forms concurrent heating, makes the heated condition of high-temperature material in continous-stable, is heated the temperature of charge duration long, is conducive to the decomposition of lime stone and burns till quality.Segmentation preheating, heating have improved the heating surface (area) (HS in high temperate zone, have strengthened the temperature homogeneity in this region, make the material in all these regions be in isothermal environment and heat simultaneously.This kiln is provided with high temperature furnace, when high-temperature heating is to technological requirement temperature with after thermal steady state, in furnace always in the condition of high temperature, the furnace body temperature of stove surrounding passes to a large amount of radiant heat the material in high temperate zone, strengthened the efficiency of heating surface, adopt pulverized coal combustor, coal dust is burning rapidly in high temperature furnace, the volatilization powder forming and burnt grain carry out second-time burning again, make fuel abundant in burning Indoor Combustion, can not form the pollutants such as tobacco (fugitive constituent) and black smoke (fixed carbon and carbon black), reach desirable national fume emission requirement.Annular heavy caliber reclaims heat pipe, impels the discharge of furnace gas unobstructed, has guaranteed the furnace gas discharge uniformity along stove cross section simultaneously, and the branch that has improved gas stream in the stove has reduced the resistance of gas stream in the stove, makes the exhaust-heat absorption utilization of gas.
Complete each point operation of kiln all adopts air cylinder driven, and action fast accurately puts in place.The material loading of kiln, blanking enter stove and give high temperate zone feed, and bottom discharge all adopts pneumatic means operation, by time relay, are controlled, and have reduced personnel's operation link, have improved production efficiency.
Furnace roof flue gas is through recycling after preheating, then the processing of process desulfurizing dust-collector, reaches discharging standards.
The present invention names as energy saving and environment friendly FJC shaft furnace.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (1)
1. a using method for energy-conserving and environment-protective lime shaft kiln, is characterized in that,
Described energy-conserving and environment-protective lime shaft kiln, comprises at the bottom of kiln body, automatic charging machine, kiln top material distributing machine, kiln automatic ash-discharging machine and ejects with kiln the desulfurizing dust-collector that smoke pipe is communicated with; It is characterized in that being from top to bottom provided with successively in kiln body preheating chamber, radiant, high-temperature burner hearth, between preheating chamber and radiant, be provided with open-close type distributing device, the outside of radiant is provided with the annular heavy caliber recovery heat pipe that the two ends mouth of pipe is communicated with the bottom of preheating chamber and the top of high-temperature burner hearth respectively, the outside of radiant and high-temperature burner hearth is provided with coal powder injection machine, the nozzle of coal powder injection machine is communicated with radiant, and the induced duct of coal powder injection machine is communicated with high-temperature burner hearth; The bottom of described preheating chamber is provided with donut cross wind-distributing pipe; Described material distributing machine, open-close type distributing device, automatic ash-discharging machine are respectively by air cylinder driven; Described coal powder injection machine utilizes the mixed thing of blast furnace waste gas, natural gas, coal dust and coal gas to torch firing in kiln;
The using method of described energy-conserving and environment-protective lime shaft kiln is:
Shaft furnace building stones are through automatic charging machine, kiln top material distributing machine, preheating chamber, open-close type distributing device, radiant enters high-temperature burner hearth, after high-temperature burner hearth has entered material, close open-close type distributing device, and then carry building stones to be stored in preheating chamber, after preheating chamber has entered material, close again kiln top material distributing machine, open coal powder injection machine to the coal powder injection of lighting a fire in high-temperature burner hearth, burned flame enters high-temperature burner hearth building stones is carried out to roasting, do not have the flue gas of completing combustion and burnt grain to enter radiant and carry out again second-time burning, make fuel fully burning in radiant, clean-burning hot gas enters preheating chamber from annular heavy caliber recovery heat pipe building stones is carried out to preheating, smoke pipe through kiln top enters desulfurizing dust-collector again, further desulfurization and dedusting, roasting is complete, and by the air blast at the bottom of kiln, radially wind-distributing pipe is cooling, coolingly by automatic ash-discharging machine, unloads ash, is then carrying out next round operation, so circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350414.8A CN102942312B (en) | 2009-12-15 | 2009-12-15 | Energy-saving environment-friendly lime shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350414.8A CN102942312B (en) | 2009-12-15 | 2009-12-15 | Energy-saving environment-friendly lime shaft kiln |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102314924A Division CN102092967B (en) | 2009-12-15 | 2009-12-15 | Energy-saving and environmentally-friendly automatic lime shaft kiln |
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| Publication Number | Publication Date |
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| CN102942312A CN102942312A (en) | 2013-02-27 |
| CN102942312B true CN102942312B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210350414.8A Active CN102942312B (en) | 2009-12-15 | 2009-12-15 | Energy-saving environment-friendly lime shaft kiln |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105018720B (en) * | 2015-07-07 | 2017-11-24 | 青岛智邦炉窑设计研究有限公司 | A kind of Coal powder spray mineral calciner and technique |
| CN106630692B (en) * | 2017-02-22 | 2019-11-05 | 中冶华天工程技术有限公司 | Sleeve kiln lime cooling device |
| CN109502999A (en) * | 2018-12-27 | 2019-03-22 | 江苏省建筑材料研究设计院有限公司 | The efficient ash discharging gear of controllable type for active lime energy conservation and environmental protection mechanical shaft kiln |
| CN110240425A (en) * | 2019-06-05 | 2019-09-17 | 黄远辉 | Novel lime shaft kiln |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156474A (en) * | 1995-06-28 | 1997-08-06 | 液态碳工业公司 | Static furnace for thermal decomposition solids at high temperature by thermal rediation |
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- 2009-12-15 CN CN201210350414.8A patent/CN102942312B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156474A (en) * | 1995-06-28 | 1997-08-06 | 液态碳工业公司 | Static furnace for thermal decomposition solids at high temperature by thermal rediation |
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| CN102942312A (en) | 2013-02-27 |
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Effective date of registration: 20220701 Address after: 276100 home appliance industrial park, Lizhuang Town, Tancheng County, Linyi City, Shandong Province Patentee after: Linyi Juda Technology Environmental Protection Engineering Co.,Ltd. Address before: 276021 Linyi Central Asia energy conservation and Environmental Protection Technology Research Institute, front and rear Tan Village, xigaodu office, Luozhuang District, Linyi City, Shandong Province Patentee before: Chen Jujun |