CN206001918U - A kind of smoke backflow Dual-barrel rotary kiln - Google Patents
A kind of smoke backflow Dual-barrel rotary kiln Download PDFInfo
- Publication number
- CN206001918U CN206001918U CN201620829604.1U CN201620829604U CN206001918U CN 206001918 U CN206001918 U CN 206001918U CN 201620829604 U CN201620829604 U CN 201620829604U CN 206001918 U CN206001918 U CN 206001918U
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- China
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- kiln
- outer tube
- inner core
- dust
- smoke backflow
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Abstract
The utility model discloses a kind of smoke backflow Dual-barrel rotary kiln，Including the kiln body being obliquely installed，Feature is that kiln body includes outer tube and the inner core in outer tube，Inner core is coaxially fixedly installed with outer tube，Inner core is provided with material inlet near the one end at kiln tail，Outer tube is located at kiln hood and is provided with product outlet，Outer tube exhanst gas outlet is connected with dust-settling compartment，Desulfurizing dust-collector and smoke backflow air blast is connected with dust-settling compartment，The air intake of smoke backflow air blast is the heat smoke of dust-settling compartment，Its air outlet stretches into inner core charging aperture，Advantage be using air blast by the heat smoke partial reflux that draws in outer tube in inner core，Both can achieve to heat the material in inner core，The dusty gas produced in inner core can be forced again to move to kiln hood high temperature section，So that dusty gas obtains the process of sufficient high temperature incineration，So as to prevent dioxin、The pollution of the pernicious gases such as stench efficient utilization waste heat.
Description
Technical field
The utility model is related to a kind of rotary kiln, especially relates to a kind of smoke backflow Dual-barrel rotary kiln, belongs to environment work
Journey and building materials technology field.
Background technology
Rotary kiln is a kind of rotation calcining or sintering oven, is widely used in much productions such as building materials, metallurgy, chemical industry, environmental protection
In industry, in order to solid material is carried out calcining, be burned or sintering processes.Field of Environment Protection generally carries out rubbish using rotary kiln and burns
Burning, sludge incineration, sludge ceramsite sintering, contaminated soil cracking and sintering processes etc..
Used by Environmental Protection in China field, rotary kiln mostly is single-cylinder type rotary kiln at present.As in sludge ceramsite sintering process, make pottery
Grain stock is from kiln tail（Fingering material and offgas outlet end, similarly hereinafter）Charging aperture enter rotary kiln, with being obliquely installed and slowly rotate
Kiln body be moved to kiln hood along kiln body inwall, and near kiln hood（Material and fuel inlet end is pointed out, similarly hereinafter）The high temperature section of one end
（About 1000-1500 DEG C）It is sintered；The high-temperature flue gas that high temperature section is produced then cause kiln by the air-introduced machine for being arranged on kiln tail one end
The exhanst gas outlet of tail one end carries out the process such as dust-removal and desulfurizing；During this, high-temperature flue gas are in opposite direction with material movement in kiln, and two
Person carries out countercurrent flow so as to heat to material.With heating of the high-temperature flue gas to material in kiln, flue-gas temperature progressively declines, extremely
During the exhanst gas outlet of kiln tail, flue-gas temperature is down to about 200-400 DEG C.However, when material heating-up temperature reaches more than 200 DEG C, thing
In material, contained organic pollutant just produces desorption reaction；When reaching 300 DEG C 600 DEG C, organic pollutant is just produced and is split
Solution reaction.Desorption and cracking reaction produce a large amount of gaseous contaminants and not sufficiently combusted carbon granule, enter in flue gas and with cigarette
Gas and caused the dust-removing desulfurating apparatus of kiln tail one end by air-introduced machine.Its defect includes：（1）A large amount of gaseous contaminants are without any place
Reason is just discharged in air, including strong carcinogens such as dioxin, and is formed stench, is caused serious atmosphere pollution；（2）Greatly
Amount carbon granule enters flue gas, causes over-emitting black exhaust, has greatly increased the difficulty of follow-up dedusting；（3）Organic pollution is desorbed and splits
Solution gas and carbon granule cause the significant wastage of the energy without burning.Therefore, big in the rotary kiln of field of Environment Protection application at present
The atmosphere pollutants emission standardses of national regulation are not reached, it has also become restriction is using sludge and the key of contaminated soil potting grain more
Factor.
For the shortcoming of monotubular rotary kiln, there are the research of double-cylinder type rotary kiln and the report of application both at home and abroad.External with
The double-cylinder type rotary kiln of Denmark's production is more famous, but its have the disadvantage expensive, and be difficult to suitable for China using sludge and
Air Pollution Control in terms of contaminated soil potting grain is required.205228189 U of domestic CN proposes a kind of Dual-barrel rotary kiln cigarette
Gas reclaiming clean device, but its objective is with Dual-barrel rotary kiln reduce haydite raw material cause because temperature is too high rupture and haydite
The phenomenon of adhesion, the process and utilization to organic pollution desorption and cracked gas and carbon granule have no any improvement；CN
102706140 B propose a kind of Dual-barrel rotary kiln pyrolysis rubbish technique, but its essence is and return material predecomposition furnace and cement
Rotary kiln joint is arranged.The technique is applied to cement rotary kiln cooperative disposal house refuse, the high warm cooled down using clinker
Solution rubbish, but it is not particularly suited for sludge ceramsite sintering and the ceramisite sintered technical process of contaminated soil.
Content of the invention
Technical problem to be solved in the utility model is to provide one kind to prevent pernicious gas pollution efficient utilization waste heat
Smoke backflow Dual-barrel rotary kiln.
The utility model solves the technical scheme that adopted of above-mentioned technical problem：A kind of smoke backflow Dual-barrel rotary kiln,
Including the kiln body being obliquely installed, the kiln tail position of described kiln body is higher than kiln hood position, and described kiln body includes outer tube and position
Inner core in described outer tube, described inner core are coaxially fixedly installed with described outer tube, and described outer tube is from kiln tail to kiln
Head is made up of the little kiln of the different outer tube of diameter and outer tube Dayao two parts successively, and described inner core is extended by the little kiln of described outer tube
To in described outer tube Dayao, described inner core is provided with material inlet near the one end at kiln tail, described outer tube Dayao position
It is provided with product outlet at kiln hood, described inner core is provided with inner core hopper near the one end at kiln hood, described outer tube
In Dayao and high temperature sintering section is provided between described inner core hopper and described product outlet, under described inner core
Being provided with some high-temperature flue gas being easy in dusty gas and outer tube in described inner core on hopper carries out the of gas exchanges
One flue gas opening, the little kiln of described outer tube are connected with dust-settling compartment near the exhanst gas outlet at kiln tail, connect on described dust-settling compartment
Air-introduced machine and the cigarette in order to the flue gas of dust-settling compartment to be blasted inner core being connected to for the flue gas of dust-settling compartment to be introduced desulfurizing dust-collector
Gas backflow air blast, the air outlet of described smoke backflow air blast stretch into the material inlet of described inner core.
Several support bars are provided between the little kiln of described outer tube and described inner core, the support bar described in each is in footpath
Arrangement is respectively separated to axial direction, on described support bar, is provided with several the second flue gas openings.Support bar is set not only
In order to connect inner core and outer tube and support and fix inner core, and in order to strengthen heat conduction, when rotary kiln is rotated, support bar is permissible
Strengthen flow perturbation, strengthen heat convection；Flue gas opening is set to facilitate flow of flue gas.
The bottom of the little kiln of described outer tube and described outer tube Dayao is separately provided for fixing the kiln body of whole kiln body
Riding wheel apparatus, the bottom of the little kiln of described outer tube and described outer tube Dayao are separately provided for driving whole kiln body to rotate
Kiln body transmission device.Outer tube Dayao and the little kiln of outer tube are independently driven by two driving means respectively, and little cylinder rotating speed is slow, so as to material
Preheating fully, makes polluter fully be desorbed and crack.
Air-tight movable connection between the little kiln of described outer tube and described outer tube Dayao.Prevent from leaking out while not affecting Dayao
Rotation with little kiln.
Some lifting blades are provided with the inwall of described inner core, in order to prevent material to be deposited on below the inner core, are increased
Big material and the contact surface of hot gas, make material thermally equivalent, improve heat transfer effect.
Described inner core extends into outer tube kiln hood one end Suo Da position for, at kiln temperature >=850 DEG C, its end connects institute
Inner core hopper is stated, the inner core hopper is flare openings, in order to facilitate the material in inner core to enter among outer tube, and with
When the desorption in inner core and cracked gas are oriented to outer tube high temperature section burnt.
Be provided with the kiln hood of described kiln body for provide fuel fuel injection device and for oxygen supply fresh air rouse
Blower fan, described fuel injection device one end connects fuel storage tower and its other end is connected with described high temperature sintering section, institute
The air outlet of the fresh air air blast that states is extend in described high temperature sintering section.
Described fuel is coal dust, water-coal-slurry, living beings, natural gas, coal gas or power supply；Described inner core is by high-temperature steel
Pipe is made or is rolled by high temperature resistant steel plate and is welded；Described support bar is made by refractory metal or nonmetallic materials, institute
The inner core hopper that states is made by refractory metal or nonmetallic materials.
Dual-barrel rotary kiln operation principle of the present utility model is as follows：Material enters inner core from the inner core charging aperture at kiln tail end,
The inner core hopper of kiln hood one end is moved to the kiln body being obliquely installed and slowly rotate along inner core inwall, enters the high temperature of outer tube
Sintering stage carries out roasting or sintering；The high-temperature flue gas that high temperature sintering section is produced are then by the desulfurizing dust-collector for being arranged on kiln tail one end
Air-introduced machine causes dust-settling compartment and finally carries out the process such as dust-removal and desulfurizing heel row and puts；During this, high-temperature flue gas are along outer tube from kiln hood
Kiln exit gas outlet is flowed to, is not directly contacted with the material in inner core, but during its heat content can be conducted to inner core by inner tube wall
Material so as to realize to material heat；Additionally, smoke backflow air blast is by the heat smoke partial reflux that draws in outer tube to interior
In cylinder, so can both realize reheating being carried out to the material in inner core, can have been forced because being desorbed and cracking in inner core again
The dusty gas that journey is produced is moved to the high temperature section of kiln hood one end, and material is identical with the dusty gas direction of motion so that contamination gas
Body obtains the process of sufficient high temperature incineration in high temperature sintering section, so as to prevent the hazardous contaminants such as dioxin, stench with cigarette
Gas enters air, and the heat of dusty gas is fully used, and significantly reduces the pressure of follow-up dust removal process.
Compared with prior art, the utility model has the advantage of：
（1）Improve efficiency of energy utilization.First, material enters kiln body from the inner core at kiln tail end, high-temperature flue gas are transported in outer tube
Dynamic, and wall-type heat exchange is carried out to material by inner tube wall and is heated；Second, the outer tube smoke outlet in kiln tail one end is arranged
Smoke backflow air blast, the flue gas partial that draws in outer tube is back in inner core, it is possible to achieve the material in inner core is carried out
Reheating；Third, the support bar arranged between inner core and outer tube can also strengthen heat conduction to inner tube wall, revolution kiln body is rotated
When, support bar and its hole can strengthen flow perturbation, can also strengthen heat convection；Fourth, organic pollution desorption in material
The dusty gas produced with cracking and carbon granule are fully burned, and its heat is fully used.
（2）Effectively prevent organic pollution and enter air.The smoke backflow air blast of setting, by the flue gas that draws in outer tube
Partial reflux is forced because the dusty gas that desorption and cracking process are produced is transported to the high temperature section of kiln hood one end in inner core in inner core
Dynamic so that dusty gas obtains the process of sufficient high temperature incineration in high temperature section, dirty so as to prevent the poisonous and harmfuls such as dioxin, stench
Dye thing enters air with flue gas.
（3）Reduce follow-up fume treatment difficulty.The dusty gas that desorption and cracking process are produced and carbon granule are filled
The high temperature incineration for dividing, dramatically reduces the pressure of follow-up dust-removal and desulfurizing process, and efficiently avoid wet dust removal process
The drawbacks of organic pollution is drenched in water.
（4）Improve production capacity.Lifting blade is set on the inwall of inner core, material can be prevented effectively from and be piled up in cylinder completely
The drawbacks of body bottom, increase the contact surface of material and hot gas, material thermally equivalent is made, heat transfer effect is improved, so as to improve life
Production capacity power.
In sum, a kind of smoke backflow Dual-barrel rotary kiln of the utility model, be suitable for sludge ceramsite sintering, heavy metal or
Organic polluted soil is ceramisite sintered, organic polluted soil thermal desorption is processed and waste incineration and sludge drying, and it is right to be also adapted for
The technological transformation of existing monotubular rotary kiln.
Description of the drawings
Fig. 1 is a kind of structural representation of smoke backflow Dual-barrel rotary kiln of the utility model；
Fig. 2 is a kind of longitudinal cross-section schematic diagram of smoke backflow Dual-barrel rotary kiln kiln body of the utility model；
Fig. 3 is a kind of schematic cross-section of smoke backflow Dual-barrel rotary kiln inner core hopper of the utility model；
1 outer tube, 1a outer tube Dayao, 1b outer tube Dayao, 2 support bars, 3 inner cores, 4 lifting blades, 5 inner core hoppers, 6 high temperature burn
Knot section, 7 fuel injection devices, 8 fuel storage towers, 9 product outlets, 10 kiln body riding wheel apparatus, 11 kiln body transmission devices, 12 cigarettes
Gas is exported, 13 material inlets, 14 air-introduced machines, 15 desulfurizing dust-collectors, 16 feed arrangements, 17 feed hoppers, 18 smoke backflow air blasts,
19 dust-settling compartments, 20 first flue gas openings, 21 second flue gas openings, 22 fresh air air blasts.
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Specific embodiment
A kind of smoke backflow Dual-barrel rotary kiln, as shown in figure 1, including the kiln body being obliquely installed, the kiln tail position of kiln body is high
In kiln hood position, kiln body includes outer tube 1 and the inner core 3 in outer tube 1, and inner core 3 is coaxially fixedly installed with outer tube 1, outer tube 1
It is made up of the little kiln 1a of the different outer tube of diameter and outer tube Dayao 1b from kiln tail to kiln hood successively, inner core 3 is extended by the little kiln 1a of outer tube
To in outer tube Dayao 1b, inner core 3 is provided with material inlet 13 near the one end at kiln tail, and outer tube Dayao 1b is located at kiln hood and arranges
Have product outlet 8, inner core 3 is provided with inner core hopper 5 near the one end at kiln hood, its position for outer tube Dayao 1b temperature >=
At 850 DEG C, it is high temperature sintering section in outer tube Dayao 1b and between the product outlet 8 of inner core hopper 5 and outer tube Dayao 1b
6, being provided with some high-temperature flue gas being easy in the dusty gas in inner core 3 and outer tube 1 on inner core hopper 5 carries out gas exchanges
The first flue gas opening 20, exhanst gas outlet 12 of the little kiln 1a of outer tube at kiln tail is connected with dust-settling compartment 19, on dust-settling compartment 19
It is connected with for the flue gas of dust-settling compartment 19 to be introduced the air-introduced machine 14 of desulfurizing dust-collector 15 and in order to by the heat smoke of dust-settling compartment 19
The smoke backflow air blast 18 of inner core 3 is blasted, the air intake of smoke backflow air blast 18 is the heat smoke of dust-settling compartment 19, smoke backflow
The air outlet of air blast 18 stretches into the material inlet 13 of inner core 3.
In this particular embodiment, as shown in Fig. 2 being provided with several support bars 2 between the little kiln 1a of outer tube and inner core 3,
Each support bar 2 is respectively separated arrangement radial and axial, is provided with several the second flue gas openings 21 on support bar 2.Outward
The bottom of the little kiln 1a and outer tube Dayao 1b of cylinder is separately provided for fixing the kiln body riding wheel apparatus 10 of whole kiln body, and outer tube
The bottom of little kiln 1a and outer tube Dayao 1b is separately provided for the kiln body transmission device 11 for driving kiln body to rotate.The little kiln 1a of outer tube
Air-tight movable is connected between outer tube Dayao 1b.The inwall of inner core 3 is provided with some lifting blades 4.Inner core hopper 5 is horn-like
Opening（As shown in Figure 3）.
In this particular embodiment, be provided with the kiln hood of kiln body for provide burning fuel storage tower 8 and with combustion
The fuel injection device 7 that material storage tower 8 connects；7 discharging opening of fuel injection device extend into high temperature sintering section 6, meanwhile, kiln body
The fresh air air blast 22 being provided with kiln hood for oxygen supply, the air outlet of fresh air air blast 22 are extend in high temperature sintering section 6.Kiln
Body angle of inclination is 3 °, and at the kiln tail of kiln body, flue-gas temperature is 200-400 °, and the temperature of high temperature sintering section 6 is 1100-1300 °.
The outlet connection chimney of desulfurizing dust-collector 15（In figure does not show）, the flying dust that desulfurizing dust-collector 15 is collected and dust-settling compartment 19 are deposited
Flying dust all carry out after reuse for baking ceramsite.19 top of dust-settling compartment arranges feed hopper 17, and feed hopper 17 is connected by pipeline
Material inlet 13, feed hopper 17 are fed by feed arrangement 16.
In this particular embodiment, fuel is coal dust, water-coal-slurry, living beings, natural gas, coal gas or power supply；Inner core 3 is by resistance to
High-temperature steel tube is made or is rolled by high temperature resistant steel plate and is welded；Support bar 2 and inner core hopper 5 are by refractory metal or non-gold
Category material makes.
Certainly, described above is not limitation of the utility model, and the utility model is also not limited to the example above.This skill
Change, remodeling, interpolation or replacement that the those of ordinary skill in art field is made in essential scope of the present utility model, should also belong to
In the utility model protection domain.
Claims (7)
1. a kind of smoke backflow Dual-barrel rotary kiln, including the kiln body being obliquely installed, the kiln tail position of described kiln body is higher than kiln hood
Position, it is characterised in that：Described kiln body includes outer tube and the inner core in described outer tube, described inner core with described
Outer tube be coaxially fixedly installed, described outer tube is successively by the little kiln of the different outer tube of diameter and outer tube Dayao two from kiln tail to kiln hood
Part constitutes, and described inner core is extended in described outer tube Dayao by the little kiln of described outer tube, and described inner core is near kiln tail
The one end at place is provided with material inlet, and described outer tube Dayao is located at kiln hood and is provided with product outlet, and described inner core is close
One end at kiln hood is provided with inner core hopper, becomes in described outer tube Dayao and positioned at described inner core hopper and described
High temperature sintering section is provided between product outlet, on described inner core hopper, is provided with some pollutions being easy in described inner core
High-temperature flue gas in gas and outer tube carry out the first flue gas opening of gas exchanges, and the little kiln of described outer tube is at kiln tail
Exhanst gas outlet is connected with dust-settling compartment, is connected with for the flue gas of dust-settling compartment is introduced drawing for desulfurizing dust-collector on described dust-settling compartment
Blower fan and the smoke backflow air blast in order to the heat smoke of dust-settling compartment to be blasted inner core, the air-out of described smoke backflow air blast
Mouth stretches into the material inlet of described inner core.
2. a kind of smoke backflow Dual-barrel rotary kiln according to claim 1, it is characterised in that：The little kiln of described outer tube and institute
Several support bars are provided between the inner core that states, and the support bar described in each is respectively separated arrangement radial and axial, described
Support bar on be provided with several the second flue gas openings.
3. a kind of smoke backflow Dual-barrel rotary kiln according to claim 1, it is characterised in that：The little kiln of described outer tube and institute
The bottom of the outer tube Dayao that states is separately provided for fixing the kiln body riding wheel apparatus of kiln body, the little kiln of described outer tube and described
The bottom of outer tube Dayao is separately provided for the kiln body transmission device for driving kiln body to rotate.
4. a kind of smoke backflow Dual-barrel rotary kiln according to claim 1, it is characterised in that：The inwall of described inner core sets
It is equipped with some lifting blades.
5. a kind of smoke backflow Dual-barrel rotary kiln according to claim 1, it is characterised in that：Described inner core hopper is
Flare openings.
6. a kind of smoke backflow Dual-barrel rotary kiln according to claim 1, it is characterised in that：At the kiln hood of described kiln body
Fuel injection device and the fresh air air blast for oxygen supply being provided with for providing fuel, described fuel injection device one end
Connect fuel storage tower and its other end is connected with described high temperature sintering section, the air outlet of described fresh air air blast extend into
In described high temperature sintering section.
7. a kind of smoke backflow Dual-barrel rotary kiln according to claim 1, it is characterised in that：Described inner core extends to outer
The position of the high temperature sintering section of cylinder Dayao is at kiln temperature >=850 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620829604.1U CN206001918U (en) | 2016-08-01 | 2016-08-01 | A kind of smoke backflow Dual-barrel rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620829604.1U CN206001918U (en) | 2016-08-01 | 2016-08-01 | A kind of smoke backflow Dual-barrel rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206001918U true CN206001918U (en) | 2017-03-08 |
Family
ID=58198808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620829604.1U Withdrawn - After Issue CN206001918U (en) | 2016-08-01 | 2016-08-01 | A kind of smoke backflow Dual-barrel rotary kiln |
Country Status (1)
| Country | Link |
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| CN (1) | CN206001918U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247810A (en) * | 2016-08-01 | 2016-12-21 | 宁波大学 | A kind of smoke backflow Dual-barrel rotary kiln |
| CN107695090A (en) * | 2017-11-07 | 2018-02-16 | 中科鼎实环境工程股份有限公司 | Double-layer barrel type thermal desorption System and method for |
| CN107913598A (en) * | 2018-01-03 | 2018-04-17 | 上海市环境工程设计科学研究院有限公司 | A kind of municipal solid waste incinerator SCR low-temperature denitration catalyst on-line regeneration systems and its renovation process |
| CN109647341A (en) * | 2019-01-29 | 2019-04-19 | 北京云水浩瑞环境科技有限公司 | The system and method for preparing adsorbent material using sludge |
-
2016
- 2016-08-01 CN CN201620829604.1U patent/CN206001918U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247810A (en) * | 2016-08-01 | 2016-12-21 | 宁波大学 | A kind of smoke backflow Dual-barrel rotary kiln |
| CN106247810B (en) * | 2016-08-01 | 2018-05-11 | 宁波大学 | A kind of smoke backflow Dual-barrel rotary kiln |
| CN107695090A (en) * | 2017-11-07 | 2018-02-16 | 中科鼎实环境工程股份有限公司 | Double-layer barrel type thermal desorption System and method for |
| CN107913598A (en) * | 2018-01-03 | 2018-04-17 | 上海市环境工程设计科学研究院有限公司 | A kind of municipal solid waste incinerator SCR low-temperature denitration catalyst on-line regeneration systems and its renovation process |
| CN107913598B (en) * | 2018-01-03 | 2023-10-13 | 上海市环境工程设计科学研究院有限公司 | Online regeneration system and regeneration method of SCR low-temperature denitration catalyst in household garbage incineration plant |
| CN109647341A (en) * | 2019-01-29 | 2019-04-19 | 北京云水浩瑞环境科技有限公司 | The system and method for preparing adsorbent material using sludge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170308 Effective date of abandoning: 20180511 |