CN206891154U - A kind of high rotary kiln of thermal efficiency - Google Patents
A kind of high rotary kiln of thermal efficiency Download PDFInfo
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- CN206891154U CN206891154U CN201720780345.2U CN201720780345U CN206891154U CN 206891154 U CN206891154 U CN 206891154U CN 201720780345 U CN201720780345 U CN 201720780345U CN 206891154 U CN206891154 U CN 206891154U
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Abstract
A kind of high rotary kiln of thermal efficiency, including kiln body, support meanss, combustion chamber, heat exchange expansion chamber, dielectric chamber, dust-precipitator, circulating fan, cooling device, kiln body set material inlet, material outlet, material outlet connection cooling device；Kiln body also sets up heating medium inlet, Crude product input；Combustion chamber heat exchange expansion chamber, the top for the expansion chamber that exchanges heat set dielectric chamber, heat pipe are set between dielectric chamber and heat exchange expansion chamber；The media outlet of dielectric chamber is communicated to the heating medium inlet of kiln body, and Crude product input is connected to the medium inlet of dielectric chamber by circulation line, and high temperature circulation blower fan is arranged on circulation line；The expansion chamber that exchanges heat sets exhanst gas outlet, and exhanst gas outlet connects chimney by pipeline communication dust-precipitator, dust-precipitator by air-introduced machine.Heat pipe group of the flue gas of the present utility model through the expansion chamber that exchanges heat, heats gas pure in dielectric chamber, is pyrolyzed material for circulating, will not bring other impurities, has the advantages of heat utilization efficiency is high, product purity is high.
Description
Technical field
It the utility model is related to industrial furnace equipment field, the high rotary kiln of specifically a kind of thermal efficiency.
Background technology
Industrial Stoves are the heats converted using fuel combustion or electric energy, by material or workpiece heat in the industrial production
Thermal Equipment.Rotary kiln is that a kind of wide Novel furnace is applied in industrial furnace, have be heated evenly, the thermal efficiency is high,
Can continuous production, the advantages that product burning quality is good, be widely used in the industry such as metallurgy, chemical industry, building refractory material, environmental protection.
Rotary kiln is made up of cylinder, support meanss, transmission device, kiln hood, kiln tail and sealing device, and cylinder has a constant inclination
Rake angle carry out gyration, material in the hollow kiln thorax of cylinder not only along the circumferential direction rolling but also vertically（From high-end to low side）
Mobile, flue gas caused by fuel combustion is from kiln thorax through calcining or reducing material.During rotary kiln heated material, it is processed
Material and burning are run in same kiln thorax, the harmful substance in fuel be attached to be calcined or reducing material on, while production of burning
Raw dust falls on material, influences to calcine or go back the quality of original product；In addition, the flue gas after burning produces with decomposition of limestone
Carbon dioxide mix together, be unfavorable for the recovery and utilization of limestone calcination byproduct carbon dioxide, therefore can not be direct
For carrying out coking, coal gasification or semi-coke production.
The A of Publication No. CN 104792154 Chinese invention patent application disclose " a kind of dividing wall type rotary kiln device,
Arranged including rotary kiln, fume afterheat generating equipment, gas recycling equipment, cooler, combustion fan, feeding system and waste gas
Place system.The masonry of resistance to material of kiln body is the hollow-core construction being made up of the inner cylinder of resistance to material and the outer barrel of resistance to material.The center for the inner cylinder of resistance to material is kiln
It is material channel between thorax, the inner cylinder of resistance to material and the outer barrel of resistance to material, material channel is provided with the support of resistance to material or the refractory masonry containing passage.
Charging (feeding) equipment is provided with decomposed gas outlet, and decomposed gas outlet is connected to gas by raw material preheating storehouse or partition preheater and reclaimed
Processing equipment, kiln thorax are connected to fume afterheat generating equipment by kiln head cover." patent application set by kiln wall and coaxial
The kiln body that the inner cylinder of resistance to material and the outer barrel of resistance to material of installation are formed, avoids flue gas and material directly contact, improves and is heated or calcines
The quality of product, be advantageous to recycle the economic benefit of decomposition gas, increase by-product income and enterprise.
Above-mentioned patent application still has certain difficulty in practical operation：The kiln body for building partition form by laying bricks or stones has very big block
Difficulty is built, brick differs greatly after forming by a firing, higher to construction process requirement when building by laying bricks or stones, often has the situation of clip；
It and brickwork joint is larger, can not reliably seal, easy brick obscission, once falling brick situation when equipment works, will influence whole
The stable operation of individual equipment, risk are larger；And to resistance to material require it is very high, it is necessary to mould it is also very complicated, construction cost is very big
Increase.
Utility model content
The utility model technical issues that need to address are to provide a kind of high rotary kiln of thermal efficiency, by being carried to rotary kiln
For the heating medium of cleaning, free from admixture doping, product purity is improved.
In order to solve the above technical problems, technical scheme is used by the utility model：
A kind of high rotary kiln of thermal efficiency, including kiln body, support meanss, transmission device and sealing device, in addition to burning
Room, heat exchange expansion chamber, dielectric chamber, dust-precipitator, circulating fan, cooling device,
The kiln tail end of the kiln body sets material inlet, and the kiln hood end of kiln body sets material outlet, and material outlet connects cold
But equipment；The kiln hood end of the kiln body sets heating medium inlet, and the kiln tail end of kiln body sets Crude product input；The burning
Room sets burner, combustion chamber heat exchange expansion chamber, and the top for the expansion chamber that exchanges heat sets dielectric chamber, and dielectric chamber settles with heat exchange
The heat pipe of heat exchange is set between room；The media outlet of the dielectric chamber is communicated to the heating medium inlet of kiln body, and kiln body adds
Thermal medium outlet is connected to the medium inlet of dielectric chamber by circulation line, and circulating fan is arranged on circulation line；It is described to change
Hot expansion chamber sets exhanst gas outlet, and exhanst gas outlet connects chimney by pipeline communication dust-precipitator, dust-precipitator by air-introduced machine.
Further improvement of the utility model is：On pipeline between the medium inlet of the circulating fan and dielectric chamber
Circulatory mediator detector is set.
Further improvement of the utility model is：Set on pipeline between the Crude product input and circulating fan
Rotoclone collector, the bottom of rotoclone collector set dust stratification case.
Further improvement of the utility model is：Set between the exhanst gas outlet and dust-precipitator of the heat exchange expansion chamber empty
Air preheater, air preheater set adjacent smoke chamber and air chamber, the flue gas of the entrance connection heat exchange expansion chamber of smoke chamber
Outlet, the outlet connection dust-precipitator of smoke chamber, the cold wind outlet of the entrance connection cooling device of air chamber, the outlet of air chamber connects
The combustion-supporting gas entrance of burner is connect, the heat pipe of heat exchange is set between smoke chamber and air chamber.
Further improvement of the utility model is：Heat pipe between the heat exchange expansion chamber and dielectric chamber is ceramics heat
Pipe, the cooling device is grate-cooler.
Further improvement of the utility model is：The middle part of the combustion chamber sets burner, is set at the top of combustion chamber
The passage of connection heat exchange expansion chamber is put, the bottom for the expansion chamber that exchanges heat sets exhanst gas outlet.
The utility model further improvement is that：The inwall coating high temperature resistant heat insulation material of the rotary kiln, material inlet
Lime stone is put into, material outlet collects lime, and the circulatory mediator is carbon dioxide, and the operating temperature of circulating fan is 1000-
1100 DEG C, it is provided for collecting the two of gas by branch pipe on the pipeline between the medium inlet of the circulating fan and dielectric chamber
Carbonoxide container, carbon dioxide detector, air pump are set on branch pipe.
The utility model is after adopting the above technical scheme, the effect with following technological progress：
The utility model enters heat exchange expansion chamber, one comes by flow direction by producing high warm flue gas in burner
Drastically change, flying dust is produced sedimentation；Two to enter by the first high-efficiency ceramic heat pipe group, the clean gas of opposite heat tube group's opposite side
Row heating, hot gas enter rotary kiln under the pulling of high temperature circulation blower fan, the material flowed in opposite directions in rotary kiln are added
Thermal decomposition, subsequent gas enters after rotoclone collector removes most of dust and enters high temperature circulation blower fan, in pushing away for circulating fan
Dielectric chamber is again introduced under dynamic to be heated, such circulating repetition above step.Flue gas caused by the utility model burning is passing through
After crossing the heat pipe group of heat exchange expansion chamber, pure gas is heated, material is pyrolyzed for circulating, other impurities will not be brought；Afterwards
After the heat pipe group of air preheater fully absorbs heat, after bag filter filtering is entered in the case of ensureing not condense
It is up to standard to be discharged into air；With the advantages of heat utilization rate is high, product purity is high.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of embodiment of the utility model.
Each label is expressed as in figure：1st, combustion chamber, 2, heat exchange expansion chamber, 3, dielectric chamber, 4, heat pipe, 5, rotary kiln, 6, stone
Lime stone, 7, dust stratification case, 8, rotoclone collector, 9, circulating fan, 10, carbon dioxide detector, 11, air pump, 12, carbon dioxide storage
Gas holder, 13, burner, 14, grate-cooler, 15, blower fan, 16, cold air, 17, smoke chamber, 18, air chamber, 19, dust-precipitator, 20,
Air-introduced machine, 21, chimney.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further details to the utility model：
Embodiment 1
A kind of high rotary kiln of thermal efficiency, including kiln body, support meanss, transmission device, sealing device, combustion chamber 1, heat exchange
Expansion chamber 2, dielectric chamber 3, dust-precipitator 19, circulating fan 9, cooling device.
The inwall coating high temperature resistant heat insulation material of the rotary kiln 5, the kiln tail end of kiln body sets material inlet, the kiln of kiln body
Head end sets material outlet, material outlet connection cooling device.The kiln hood end of the kiln body sets heating medium inlet, kiln body
Kiln tail end sets Crude product input.
The middle part of the combustion chamber 1 sets burner 13, and burner 13 is using coal dust and combustion air as fuel.Combustion chamber 1
Top by passage connect heat exchange expansion chamber 2, heat exchange expansion chamber 2 top set dielectric chamber 3, dielectric chamber 3 with heat exchange settle
The ceramic heat pipe of heat exchange is set between room 2.The medium inlet of the dielectric chamber 3 adds carbon dioxide, the dioxy in dielectric chamber 3
Change and rotary kiln is entered by media outlet after carbon is heated.Lime stone 6, lime stone are put into by the material inlet of rotary kiln tail end
It is pyrolyzed by the carbon dioxide of the heating of adverse current, collects lime from kiln hood end material outlet, cooling device grate-cooler 14 passes through blower fan
15 introduce cold air 16, and cool lime is active lime.CO 2 medium and the lime stone pyrolysis being utilized in kiln body
Carbon dioxide afterwards is brought out by the Crude product input at kiln tail end.The Crude product input of kiln body is connected by circulation line
To the medium inlet of dielectric chamber 3, to participate in circulating again.Set gradually on the circulation line from Crude product input one end
Rotoclone collector 8, circulating fan 9 and recovery branch pipe.Rotoclone collector 8 is received the dust in carbon dioxide by cyclonic separation
To dust stratification case 7.Circulating fan 9 draws carbon dioxide recycle participation rotary kiln 5 and worked.For reclaim carbon dioxide, circulating fan 9 with
It is provided for collecting the carbon dioxide container 12 of gas on pipeline between the medium inlet of dielectric chamber 3 by branch pipe, on branch pipe
Carbon dioxide detector 10, air pump 11 are set.
The bottom of the heat exchange expansion chamber 2 sets exhanst gas outlet, and exhanst gas outlet passes through pipeline communication dust-precipitator 19, dust-precipitator
19 connect chimney 21 by air-introduced machine 20.Air preheat is set between the exhanst gas outlet and dust-precipitator 19 of the heat exchange expansion chamber 2
Device, air preheater set adjacent smoke chamber 17 and air chamber 18.The flue gas of the entrance connection heat exchange expansion chamber 2 of smoke chamber 17
Outlet, the outlet connection dust-precipitator 19 of smoke chamber 17, the cold wind outlet of the entrance connection cooling device of air chamber 18, air chamber 18
Outlet connection burner 13 combustion-supporting gas entrance, between smoke chamber 17 and air chamber 18 set heat exchange heat pipe 4, utilize
The waste heat of the abundant secondary use flue gas of heat pipe, plays combustion-supporting effect.
Workflow of the present utility model is as follows, gas trend：The system produces 1400 DEG C by burner combustion coal dust
Left and right heat smoke, heat exchange expansion chamber is entered, one carrys out the drastically change by flow direction, flying dust is produced sedimentation；Two come by
One high-efficiency ceramic heat pipe group, the clean gas of opposite heat tube group's opposite side are heated, and produce 1100 DEG C or so of hot gas in height
Enter rotary kiln under the pulling of warm circulating fan, heat resolve, subsequent gas are carried out to the lime stone flowed in opposite directions in rotary kiln
Enter high temperature circulation blower fan after removing most of dust into rotoclone collector, now about 600 DEG C or so of gas temperature, are being followed
Dielectric chamber is again introduced under the promotion of ring blower fan to be heated, such circulating repetition above step.
In the circulation of this clean gas, with the progress that decomposition of limestone is reacted, air pressure can gradually rise, for system
Safety and the needs for collecting carbon dioxide, in the case where ensureing system pressure-fired, carbon dioxide detector monitoring gas
Pressure and concentration, portion gas is discharged into by carbon dioxide gas storage holder by the air pump of interlocking in good time.
For the active lime of kiln discharge, quickly cooled down by the blower fan of grate-cooler, gained hot gas is passing through second heat
After nest of tubes absorbs fume afterheat, enter combustion chamber as oxygen-containing sufficiently preheated air.
Flue gas caused by burning by first, second heat pipe group after heat is fully absorbed, in the feelings that guarantee does not condense
It is up to standard after being filtered under condition into bag filter to be discharged into air.
Material moves towards：Lime stone is fed by kiln tail, is filled by the hot gas with 1100 DEG C or so of reverse flow in rotary kiln
Divide after carrying out heat exchange, realize preheating, decompose, generation active lime.900 DEG C or so of active lime enters cooling from kiln hood
Machine, in the case where 10-30 DEG C or so of air of environment temperature cools down, the temperature of active lime is down to+60 DEG C of environment temperature, due to
It is extremely cold cooling, also preferably ensure that the activity of lime.
Claims (7)
1. a kind of high rotary kiln of thermal efficiency, including kiln body, support meanss, transmission device and sealing device, it is characterised in that：Also
Including combustion chamber（1）, heat exchange expansion chamber（2）, dielectric chamber（3）, dust-precipitator（19）, circulating fan（9）, cooling device,
The kiln tail end of the kiln body sets material inlet, and the kiln hood end of kiln body sets material outlet, and material outlet connection cooling is set
It is standby；The kiln hood end of the kiln body sets heating medium inlet, and the kiln tail end of kiln body sets Crude product input；The combustion chamber
（1）Burner is set（13）, combustion chamber（1）Connection heat exchange expansion chamber（2）, exchange heat expansion chamber（2）Top set dielectric chamber
（3）, dielectric chamber（3）With the expansion chamber that exchanges heat（2）Between set heat exchange heat pipe（4）；The dielectric chamber（3）Media outlet connect
The heating medium inlet of kiln body is led to, the Crude product input of kiln body is connected to dielectric chamber by circulation line（3）Medium enter
Mouthful, circulating fan（9）On circulation line；The heat exchange expansion chamber（2）Exhanst gas outlet is set, and exhanst gas outlet passes through pipeline
Connect dust-precipitator（19）, dust-precipitator（19）Pass through air-introduced machine（20）Connect chimney（21）.
A kind of 2. high rotary kiln of thermal efficiency according to claim 1, it is characterised in that：The circulating fan（9）With Jie
Matter room（3）Medium inlet between pipeline on set circulatory mediator detector.
A kind of 3. high rotary kiln of thermal efficiency according to claim 2, it is characterised in that：The Crude product input is with following
Ring blower fan（9）Between pipeline on rotoclone collector is set（8）, rotoclone collector（8）Bottom set dust stratification case（7）.
A kind of 4. high rotary kiln of thermal efficiency according to claim 1 or 2, it is characterised in that：The heat exchange expansion chamber（2）
Exhanst gas outlet and dust-precipitator between air preheater is set, air preheater sets adjacent smoke chamber（17）And air chamber
（18）, smoke chamber（17）Entrance connection heat exchange expansion chamber exhanst gas outlet, smoke chamber（17）Outlet connection dust-precipitator, air
Room（18）Entrance connection cooling device cold wind outlet, air chamber（18）Outlet connection burner combustion-supporting gas entrance,
Smoke chamber（17）And air chamber（18）Between set heat exchange heat pipe（4）.
A kind of 5. high rotary kiln of thermal efficiency according to claim 1 or 2, it is characterised in that：The heat exchange expansion chamber（2）
With dielectric chamber（3）Between heat pipe be ceramic heat pipe, the cooling device is grate-cooler（14）.
A kind of 6. high rotary kiln of thermal efficiency according to claim 1 or 2, it is characterised in that：The combustion chamber（1）In
Portion sets burner, combustion chamber（1）Top set connection heat exchange expansion chamber（2）Passage, exchange heat expansion chamber（2）Bottom set
Put exhanst gas outlet.
A kind of 7. high rotary kiln of thermal efficiency according to claim 6, it is characterised in that：The rotary kiln（5）Inwall
High temperature resistant heat insulation material, material inlet input lime stone are coated, material outlet collects lime, and the circulatory mediator is titanium dioxide
Carbon, the operating temperature of circulating fan is 1000-1100 DEG C, the circulating fan（9）With dielectric chamber（3）Medium inlet between
It is provided for collecting the carbon dioxide container of gas on pipeline by branch pipe（12）, carbon dioxide detector is set on branch pipe
（10）, air pump（11）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780345.2U CN206891154U (en) | 2017-06-30 | 2017-06-30 | A kind of high rotary kiln of thermal efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780345.2U CN206891154U (en) | 2017-06-30 | 2017-06-30 | A kind of high rotary kiln of thermal efficiency |
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| Publication Number | Publication Date |
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| CN206891154U true CN206891154U (en) | 2018-01-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218803A (en) * | 2017-06-30 | 2017-09-29 | 上海柯来浦能源科技有限公司 | A kind of high rotary kiln of thermal efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218803A (en) * | 2017-06-30 | 2017-09-29 | 上海柯来浦能源科技有限公司 | A kind of high rotary kiln of thermal efficiency |
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