CN102537986A - Rotary kiln equipment used for contaminated soil restoration operation - Google Patents
Rotary kiln equipment used for contaminated soil restoration operation Download PDFInfo
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- CN102537986A CN102537986A CN2012100440089A CN201210044008A CN102537986A CN 102537986 A CN102537986 A CN 102537986A CN 2012100440089 A CN2012100440089 A CN 2012100440089A CN 201210044008 A CN201210044008 A CN 201210044008A CN 102537986 A CN102537986 A CN 102537986A
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- kiln
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Abstract
In order to solve the problems in the prior art that the heat efficiency of the rotary kiln equipment is low and the contaminated soil rehabilitation cost, the invention provides rotary kiln equipment used for contaminated soil restoration operation. The rotary kiln equipment comprises a soil feeding device, a rotary kiln, a discharging device and a combustion machine, wherein the rotary kiln comprises a kiln head, a kiln body and a kiln tail, and the inner wall of the kiln body is fixedly provided with six soil throwing belts which are evenly distributed along the axial direction of the kiln body; and each soil throwing belt comprises two earth throwing plates, wherein the height direction of one earth throwing plate is arranged along the radial direction of the kiln body, and the side face of the other throwing plate along the rotation direction of the kiln body and the side face of the earth throwing plate arranged along the radial direction of the kiln body form a 45-degree included angle. According to the invention, the design of the earth throwing plates with a certain angle is adopted, so that the soil can rotate along with the kiln body so as to hike, and the soil can be in full contact with high-temperature smoke; and proven by the experiment, the design scheme can be used for improving the heat utilization efficiency of the soil by more than three times, and reducing the rehabilitation cost of the contaminated soil.
Description
Technical field
The present invention relates to a kind of incinerator, specifically is a kind of rotary kiln that is used to handle contaminated soil.
Background technology
The general using thermal desorption technology of carrying out of present industrial place high concentration organic class contaminated soil repair is carried out; This technology is to utilize rotary kiln that contaminated soil is heated to make the organic pollution volatilization; Reach the purpose that pollutant separates with soil, but the current hot rotary kiln that is used for the soil remediation technology only is built into a spiral helicine strip deflector from kiln hood to the kiln tail with refractory material when internal structure, be used for the conveying of soil; Thisly be configured in the rotary kiln rotation process pending soil and be difficult to rotate and kick up with the kiln body; Soil rests on rotary kiln kiln body bottom, and the soil that only lacks the part top layer directly contacts with high-temperature flue gas, causes total contact area of interior high-temperature flue gas of unit interval and soil minimum; Cause the thermal efficiency of rotary kiln extremely low, the rehabilitation cost of contaminated soil is high.
Summary of the invention
The objective of the invention is to solve the problem that rotary kiln equipment thermal efficiency of the prior art is low, the contaminated soil rehabilitation cost is high, a kind of rotary kiln equipment that is used for the contaminated soil repair is provided.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of rotary kiln equipment that is used for the contaminated soil repair; Comprise soil feed arrangement, rotary kiln, drawing mechanism and combustor; Rotary kiln comprises kiln hood, kiln body and kiln tail, be fixed with on the kiln body inwall 6 along the kiln axon to equally distributed throwing soil zone, throw soil zone for every and comprise that two are thrown native plates; Wherein a short transverse of throwing native plate radially is provided with along the kiln body, and another side of throwing native plate becomes 45 ° of angle settings along kiln body direction of rotation with the side of the throwing soil plate that is disposed radially.
The kiln body can stir soil fully in rotary course; The soil that the throwing soil plate that radially is provided with along the kiln body carries becomes 0 to spend in 90 scopes spent and land throwing native plate with ground; And another soil of throwing that native plate carries is to become 45 to spend and in 135 scopes spent, land with ground at the native plate of last throwing; Such six runnings of throwing soil zone have improved the rotation of soil in the rotary kiln burner hearth greatly, and its heat energy utilization rate is greatly improved.
Kiln body inwall is provided with two guided plates that are provided with from 360 ° of spirals of kiln hood direction sensing kiln tail, and two guided plates are that symmetry axis distributes with kiln body central axis.This design can make contaminated soil in kiln body rotary course, receive to be admitted to the kiln tail smoothly under the guiding of gravity and spiral.
The rotary kiln equipment that is used for the contaminated soil repair of the present invention; Design through angled throwing soil plate; Soil is rotated with the kiln body kick up, soil can fully be contacted, with high-temperature flue gas through the experiment proof; This design can make the heat energy utilization rate of soil improve more than 3 times, has reduced the rehabilitation cost of contaminated soil.
Description of drawings
Fig. 1 is the structural representation that is used for the rotary kiln equipment of contaminated soil repair of the present invention.
Fig. 2 is a kiln body internal structure sketch map.
The 1-kiln hood, 2-kiln body, 3-kiln tail, 4-throws native plate, the 5-guided plate; The 6-cement layer, 7-dusty gas exhaust passage, 8-blanking skewed slot, 9-discharging opening, 10-combustor; The 11-feed belt, 12-gravity sensing material-falling hopper, 13-material elevator, 14-variable-frequency motor, 15-reductor.
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is done and to be specified.
As shown in Figure 1, a kind of rotary kiln equipment that is used for the contaminated soil repair of the present invention comprises soil feed arrangement, rotary kiln, drawing mechanism and combustor, and rotary kiln comprises kiln hood 1, kiln body 2 and kiln tail 3.
The design that kiln body 2 adopts rotation to advance improves the rate of volatilization of pollutant in soil, to reach the heat that utilizes combustor 10 to be provided to greatest extent, the soil of handling well in the kiln to be transported to fast and effectively the purpose of drawing mechanism simultaneously.The level of kiln hood 1 will highly be higher than kiln tail 3 in the rotary kiln installation process, makes the rotary kiln device become 5 ° of angles with the level ground, for the transportation of soil provides gravitational difference.Rotary kiln adopts rotary design simultaneously, and design is for being equipped with gear wheel in the outer body middle part of kiln body 2, and the rotation of kiln body 2 is controlled gear wheel through the drive of variable-frequency motor 14 and reductor 15 and realized.
As shown in Figure 2; Be fixed with on kiln body 2 inwalls 6 along the kiln axon to equally distributed throwing soil zone; Throw soil zone for every and comprise that two are thrown native plate 4; Wherein a short transverse of throwing native plate radially is provided with along the kiln body, and another side of throwing native plate becomes 45 ° of angle settings along kiln body direction of rotation with the side of the throwing soil plate that is disposed radially.Every the throwing soil zone is all isometric with the kiln body, on the native plate of throwing 4 sides, has sulculus at interval, prevents to throw the distortion that native plate 4 expanded by heating cause.Throw native plate 4 and preferably highly be 35cm; Can further improve the ability of kicking up of throwing 4 pairs of soil of native plate; And interval 10cm has the high groove of 5cm on the native plate of throwing 4 sides; Two block length steel plates with high 35cm during making are welded on the kiln body inwall, and a block plate radially welds along the kiln body, and another block plate and its angle are 45 °.
As shown in Figure 2, it is that symmetry axis distributes with kiln body 2 central axis that kiln body 2 inwalls are provided with two 5, two guided plates 5 of guided plate that point to 360 ° of spirals settings of kiln tail from the kiln hood direction.Guided plate 5 also adopts the steel plate welding of height 35cm, waits to throw to be welded on kiln body 2 inwalls after the soil zone welding is accomplished.
As shown in Figure 2, building on kiln body 2 inwalls has refractory heat-insulating cement layer 6, with the soldering opening of protection throwing soil zone and guided plate 5 and kiln body inwall, with protection kiln body temperature inside, avoids the loss of heat simultaneously.The thickness of cement layer 6 is preferably 20cm.Ring-type irony baffle plate at kiln body front end.
As shown in Figure 1, be provided with dusty gas exhaust passage 7 and blanking skewed slot 8 in the kiln hood 2, dusty gas discharge-channel 7 and kiln hood 1 external communications, the upper end of blanking skewed slot 8 is below feed arrangement, and the lower end of blanking skewed slot 8 feeds kiln body 2.The organic pollutant air exit of dusty gas exhaust passage 7 for volatilizing in the contaminated soil, its outside air-introduced machine that connects is used for sending into exhaust treatment system to dusty gas.Also be provided with ash hole on kiln hood 2 walls and be used for discharging the small amount of dust that falls by kiln hood.The contaminated soil of coming in from feed arrangement gets into the kiln body along blanking skewed slot 8.
As shown in Figure 1, kiln tail 3 walls are provided with discharging opening 9.Kiln tail 3 is the discharging opening of contaminated soil after handling, and also is connected with combustor 10 on kiln tail 3 outer walls simultaneously, and the soil of having repaired gets into drawing mechanism after discharging.Drawing mechanism comprises blanking skewed slot and material elevator composition.The soil that is transported out by kiln tail discharging opening gets into material elevator along the blanking skewed slot.Directly get into truck by material elevator, to reduce cost of labor.
As shown in Figure 1, feed arrangement comprises feed belt 11 and gravity sensing material-falling hopper 12.Contaminated soil is transported to the gravity sensing material-falling hopper through feed belt; Square bin door is through the control of gravity sensing blanking system under the gravity sensing material-falling hopper; When the soil in the material-falling hopper reaches when setting threshold value; Door is opened automatic moment, and the blanking skewed slot gets into the rotary kiln device to the soil in the material-falling hopper along material-falling hopper below rapidly, this design can effectively solve traditional rotary kiln have screw feeding device carry the spiral that is brought stuck, can't carry problems such as containing stone soil.
With treating capacity be 10 tons/time equipment be example; The specification of making rotary kiln according to the invention is: kiln body 2 length are 10 meters, and kiln body 2 diameter of leaning to one side is 1.5 meters, and the ring-type irony baffle plate of kiln body 2 front ends is high 0.4 meter; Diameter of a circle is 0.7m in the kiln body front end; Kiln hood 1 length is 1.2 meters, and kiln tail 3 length are 0.7 meter, and blanking skewed slot 8 is 45 degree with the angle of kiln body 2.
During work; Contaminated soil gets into gravity sensing material-falling hopper 12 through feed belt 11; When the soil in the gravity sensing material-falling hopper 12 surpasses preset threshold; Door moment of gravity sensing material-falling hopper 12 belows opens, and generally is set at 15 ~ 20kg, and soil falls into blanking skewed slot 8 automatically and gets into kiln body 2 from kiln hood 1; Soil in the kiln body 2 obtains the process that pollutant and soil are separated under the high temperature that combustor 10 provides; The dusty gas that volatilizes is then introduced exhaust treatment systems by dusty gas exhaust passage 7 under the effect of air-introduced machine, soil then the effect of throwing native plate 4 and guided plate 5 down quilt pushed away screw propulsion and go into the discharging opening of kiln tail 3 and fall into material elevator 13, betransported out with material elevator 13 then.
Claims (7)
1. rotary kiln equipment that is used for the contaminated soil repair; Comprise soil feed arrangement, rotary kiln, drawing mechanism and combustor; Rotary kiln comprises kiln hood (1), kiln body (2) He Yaowei (3); It is characterized in that: be fixed with on kiln body (2) inwall 6 along the kiln axon to equally distributed throwing soil zone; Throw soil zone for every and comprise that two are thrown native plate (4), wherein a short transverse of throwing native plate radially is provided with along the kiln body, and another side of throwing native plate becomes 45 ° of angle settings along kiln body direction of rotation with the side of the throwing soil plate that is disposed radially.
2. the rotary kiln equipment that is used for the contaminated soil repair according to claim 1; It is characterized in that: kiln body (2) inwall is provided with two guided plates (5) that are provided with from 360 ° of spirals of kiln hood (1) direction sensing kiln tail (3), and two guided plates (5) are that symmetry axis distributes with kiln body (2) central axis.
3. the rotary kiln equipment that is used for the contaminated soil repair according to claim 1 and 2 is characterized in that: on throwing native plate (4) side, have sulculus at interval.
4. the rotary kiln equipment that is used for the contaminated soil repair according to claim 3 is characterized in that: throw native plate (4) and highly be 35cm, 10cm has the high groove of 5cm at interval on throwing native plate (4) side.
5. the rotary kiln equipment that is used for the contaminated soil repair according to claim 1 and 2 is characterized in that: building on kiln body (2) inwall has refractory heat-insulating cement layer (6).
6. the rotary kiln equipment that is used for the contaminated soil repair according to claim 1 and 2; It is characterized in that: be provided with dusty gas exhaust passage (7) and blanking skewed slot (8) in the kiln hood (2); Dusty gas discharge-channel (7) and kiln hood (1) external communications; The upper end of blanking skewed slot (8) is below feed arrangement, and the lower end of blanking skewed slot (8) feeds kiln body (2).
7. the rotary kiln equipment that is used for the contaminated soil repair according to claim 1 and 2 is characterized in that: feed arrangement comprises feed belt (11) and gravity sensing material-falling hopper (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100440089A CN102537986A (en) | 2012-02-27 | 2012-02-27 | Rotary kiln equipment used for contaminated soil restoration operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100440089A CN102537986A (en) | 2012-02-27 | 2012-02-27 | Rotary kiln equipment used for contaminated soil restoration operation |
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| CN102537986A true CN102537986A (en) | 2012-07-04 |
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| CN2012100440089A Pending CN102537986A (en) | 2012-02-27 | 2012-02-27 | Rotary kiln equipment used for contaminated soil restoration operation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888614A (en) * | 2016-05-27 | 2016-08-24 | 商洛市海蓝科技有限公司 | Oil-gas field well drilling waste sludge treatment device |
| CN109539288A (en) * | 2018-11-13 | 2019-03-29 | 西安文理学院 | A kind of prosthetic device and restorative procedure of oil pollution alkaline land soil |
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| CN1772677A (en) * | 2005-10-12 | 2006-05-17 | 王全祥 | Magnesia calcining boiling furnace rotary kiln method and apparatus |
| JP2007000853A (en) * | 2005-06-23 | 2007-01-11 | Katsuhiro Ito | Method for cleaning and treating pcb-contaminated soil |
| JP2010107177A (en) * | 2008-10-29 | 2010-05-13 | Kenichi Konno | Rotary refuse incineration and soil improvement apparatus |
| CN101721501A (en) * | 2009-11-26 | 2010-06-09 | 重庆市中药研究院 | Coptis chinensis drying and tassel removing method and equipment |
| CN201511036U (en) * | 2009-09-29 | 2010-06-23 | 北京建工环境修复有限责任公司 | Direct thermal analysing equipment |
| CN102357521A (en) * | 2011-07-19 | 2012-02-22 | 沈阳环境科学研究院 | Continuous direct thermal desorption method for persistent organic polluted soil |
| CN202521617U (en) * | 2012-02-27 | 2012-11-07 | 山西省环境科学研究院 | Rotary kiln equipment for polluted soil remediation |
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2012
- 2012-02-27 CN CN2012100440089A patent/CN102537986A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007000853A (en) * | 2005-06-23 | 2007-01-11 | Katsuhiro Ito | Method for cleaning and treating pcb-contaminated soil |
| CN1772677A (en) * | 2005-10-12 | 2006-05-17 | 王全祥 | Magnesia calcining boiling furnace rotary kiln method and apparatus |
| JP2010107177A (en) * | 2008-10-29 | 2010-05-13 | Kenichi Konno | Rotary refuse incineration and soil improvement apparatus |
| CN201511036U (en) * | 2009-09-29 | 2010-06-23 | 北京建工环境修复有限责任公司 | Direct thermal analysing equipment |
| CN101721501A (en) * | 2009-11-26 | 2010-06-09 | 重庆市中药研究院 | Coptis chinensis drying and tassel removing method and equipment |
| CN102357521A (en) * | 2011-07-19 | 2012-02-22 | 沈阳环境科学研究院 | Continuous direct thermal desorption method for persistent organic polluted soil |
| CN202521617U (en) * | 2012-02-27 | 2012-11-07 | 山西省环境科学研究院 | Rotary kiln equipment for polluted soil remediation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888614A (en) * | 2016-05-27 | 2016-08-24 | 商洛市海蓝科技有限公司 | Oil-gas field well drilling waste sludge treatment device |
| CN105888614B (en) * | 2016-05-27 | 2018-07-27 | 商洛市海蓝科技有限公司 | Oilfield drilling dumping mud treatment device |
| CN109539288A (en) * | 2018-11-13 | 2019-03-29 | 西安文理学院 | A kind of prosthetic device and restorative procedure of oil pollution alkaline land soil |
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Application publication date: 20120704 |