CN111058355A - Low-temperature catalytic gas medium-long wave drying drum - Google Patents
Low-temperature catalytic gas medium-long wave drying drum Download PDFInfo
- Publication number
- CN111058355A CN111058355A CN201911364403.3A CN201911364403A CN111058355A CN 111058355 A CN111058355 A CN 111058355A CN 201911364403 A CN201911364403 A CN 201911364403A CN 111058355 A CN111058355 A CN 111058355A
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- Prior art keywords
- drying cylinder
- drying drum
- aggregate feeding
- old
- feeding area
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- 238000001035 drying Methods 0.000 title claims abstract description 95
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000006555 catalytic reaction Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 abstract description 10
- 239000011384 asphalt concrete Substances 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
- E01C19/1027—Mixing in a rotary receptacle
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
- Drying Of Solid Materials (AREA)
Abstract
本发明属于沥青混凝土搅拌设备技术领域，涉及一种低温催化燃气中长波干燥滚筒，包括机架，机架上设置固定干燥筒，旋转干燥滚筒与固定干燥筒同轴设置，且旋转干燥滚筒能够相对于固定干燥筒进行转动，所述旋转干燥滚筒与固定干燥筒之间形成旧集料进料区，旧集料进料区设有旧集料进料口，固定干燥筒对应于旧集料进料区的外表面设置有用于沿轴向输送旧集料的外畚斗。该干燥滚筒通过改变传热方式，有效减少能耗及降低沥青烟气的产生。
The invention belongs to the technical field of asphalt concrete mixing equipment, and relates to a low-temperature catalytic gas medium and long wave drying drum. It rotates on a fixed drying cylinder, an old aggregate feeding area is formed between the rotating drying cylinder and the fixed drying cylinder, the old aggregate feeding area is provided with an old aggregate feeding port, and the fixed drying cylinder corresponds to the old aggregate feeding area. The outer surface of the material area is provided with an outer bucket for conveying the old aggregate in the axial direction. The drying drum can effectively reduce energy consumption and reduce the generation of asphalt flue gas by changing the heat transfer mode.
Description
Technical Field
The invention belongs to the technical field of asphalt concrete mixing equipment, and relates to a low-temperature catalytic gas medium-long wave drying drum.
Background
In the production process of a regenerated asphalt mixture (RAP), the drying temperature rise of new aggregates and old aggregates (containing asphalt) is realized by respectively heating the aggregates by using heat energy generated by combustion of a combustion oil burner or a gas burner in a direct-fired drying roller at present, and the heat transfer characteristic of the mode is that heat is transferred between high-temperature flue gas and the aggregates through convection, but in the heating process of the old aggregates, the asphalt is aged due to the heat transfer of the mode because of the components of the asphalt, the process temperature at the end of drying is 120-150 ℃, the temperature concentration of the asphalt flue gas in the drying temperature rise process is very high, the convection heat transfer air quantity is quite large (the yield of 120 tons per hour is large and 25000 cubic 150 ℃ of asphalt flue gas is generated), the quantity is large, the treatment is difficult, and the pollution is serious.
Disclosure of Invention
Aiming at the problems, the invention provides the low-temperature catalytic gas medium-long wave drying drum which effectively reduces the energy consumption and the generation of asphalt smoke by changing the heat transfer mode.
According to the technical scheme of the invention: the utility model provides a long wave drying drum in low temperature catalysis gas which characterized in that: the drying machine comprises a rack, wherein a fixed drying cylinder is arranged on the rack, a rotary drying cylinder and the fixed drying cylinder are coaxially arranged, the rotary drying cylinder can rotate relative to the fixed drying cylinder, an old aggregate feeding area is formed between the rotary drying cylinder and the fixed drying cylinder, the old aggregate feeding area is provided with an old aggregate feeding hole, and an outer winnowing pan for conveying old aggregates along the axial direction is arranged on the outer surface of the fixed drying cylinder corresponding to the old aggregate feeding area of the rotary drying cylinder;
the inner cavity of the rotary drying drum forms a new aggregate feeding area, the inner wall of the rotary drying drum is provided with an inner material plate for conveying new aggregates along the axial direction, the fixed drying drum is provided with an old aggregate discharging port for communicating the old aggregate feeding area with the old aggregate feeding area, one axial side of the rotary drying drum is provided with a gas burner, and the other axial side of the rotary drying drum is provided with a flue gas outlet and a new aggregate feeding port;
a new aggregate feed opening communicated with the new aggregate feeding area and an old aggregate feed opening communicated with the old aggregate feeding area are formed in the fixed drying cylinder;
the fixed drying cylinder upper surface sets up a plurality of low temperature catalysis gas medium-long wave heating module along the axial, every all set up a gas valve on the low temperature catalysis gas medium-long wave heating module to heating old aggregate feeding district, rotatory drying drum rotates at the during operation.
As a further improvement of the invention, the outer winnowing pans are spirally arranged on the outer surface of the rotary drying drum, and the working surface of each outer winnowing pan is an arc-shaped surface.
As a further improvement of the invention, the two axial ends of the rotary drying drum are respectively connected with driven wheels in a sealing manner, each driven wheel is respectively in tight fit with a driving wheel arranged on the rotary drying drum in a pressing manner and driven by a driving wheel to operate, and the driving wheel is driven to operate by a driving mechanism arranged on the frame.
As a further improvement of the invention, the flue gas outlet is arranged above the new aggregate feeding hole.
As a further improvement of the invention, the low-temperature catalytic gas medium-long wave heating module penetrates through the top of the fixed drying cylinder along the axial direction, and the included angle between the two ends of the low-temperature catalytic gas medium-long wave heating module and the central connecting line of the fixed drying cylinder along the circumferential direction is 93 degrees.
The invention has the technical effects that: the invention has simple structure, and does not need a large-air-volume fan for supporting combustion because of the low-temperature catalysis compared with the direct-fired combustion, so the volume of the equipment is reduced, and the electric drive power is reduced; the low-temperature catalytic gas infrared device fully utilizes the medium-long wave with the wavelength band of 2.3-5.5um in the infrared, and is just suitable for the wavelengths of asphalt and stone in the old aggregate in RAP, the medium-long wave has the characteristics of high energy density, no need of energy conduction medium, strong penetrating power, synchronous heating of the heated old aggregate from inside to outside by means of resonance conduction among molecules, and improved heat rate; the low-heat catalytic gas device used in the invention has low action temperature of the catalyst, no open fire, safety and explosion resistance, and is very easy to burn in the heating process due to the open fire in the existing RAP production process (because a large amount of high-temperature high-concentration combustible asphalt smoke can be generated in the heating process); the invention adopts low-temperature catalytic oxidation, so that no nitrogen oxide is generated.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a sectional view taken along line B-B in fig. 1.
Fig. 4 is an arrow mark illustration.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the drawings 1-3, the device comprises a gas burner 1, a rotary drying drum 2, a fixed drying drum 3, a low-temperature catalytic gas long medium wave heating module 4, an external winnowing pan 5, an internal material plate 6, a driving mechanism 7, a frame 8, a driven wheel 9, a driving wheel 10, a gas valve 11, a new aggregate discharge port 12, a new aggregate feed port 13, an old aggregate feed port 14, a flue gas outlet 15, a new aggregate feed port 16 and the like.
As shown in fig. 1 to 4, the invention relates to a low-temperature catalytic gas medium-long wave drying drum, which comprises a frame 8, wherein a fixed drying cylinder 3 is arranged on the frame 8, a rotary drying drum 2 and the fixed drying cylinder 3 are coaxially arranged, the rotary drying drum 2 can rotate relative to the fixed drying cylinder 3, an old aggregate feeding area is formed between the rotary drying drum 2 and the fixed drying cylinder 3, a new aggregate feeding hole 16 is formed in the new aggregate feeding area, and an outer winnowing pan 5 for conveying old aggregates along the axial direction is arranged on the outer surface of the fixed drying cylinder 3 corresponding to the old aggregate feeding area in the fixed drying cylinder 3.
The inner chamber of rotary drying drum 2 forms the new feeding district that gathers materials, and rotary drying drum 2's inner wall setting is used for carrying the interior flitch 6 that newly gathers materials along the axial, is equipped with new discharge gate 12 that gathers materials on rotary drying drum 2, and new discharge gate 12 that gathers materials is used for communicateing new feeding district that gathers materials and new feeding district that gathers materials, and rotary drying drum 2's axial one side sets up gas burner 1, and rotary drying drum 2's axial opposite side sets up exhanst gas outlet 15, new feed inlet 16 that gathers materials.
And a new aggregate feed opening 13 communicated with the new aggregate feeding area and an old aggregate feed opening 14 communicated with the old aggregate feeding area are arranged on the fixed drying cylinder 3.
The surface of the fixed drying cylinder 3 is provided with a plurality of low-temperature catalytic gas medium-long wave heating modules 4 along the axial direction, each low-temperature catalytic gas medium-long wave heating module 4 is provided with a gas valve 11 to heat an old aggregate feeding area, and the rotary drying cylinder 2 rotates at the work time.
The outer winnowing pans 5 are spirally arranged on the outer surface of the rotary drying drum 2, and the working surface of each outer winnowing pan 5 is an arc-shaped surface.
Two axial ends of the rotary drying drum 2 are respectively connected with driven wheels 9 in a sealing mode, each driven wheel 9 is respectively in press fit with a driving wheel 10 arranged on the rack 8 and driven to operate by the driving wheel 10, and the driving wheel 10 is driven to operate by a driving mechanism 7 arranged on the rack 8 to drive the rotary drying drum 2 to rotate.
The flue gas outlet 15 is placed above the new aggregate feed inlet 16 to achieve effective separation of flue gas from new aggregate.
The low-temperature catalytic gas medium-long wave heating module 4 penetrates through the top of the fixed drying cylinder 3 along the axial direction, and the included angle between the two ends of the low-temperature catalytic gas medium-long wave heating module 4 and the central connecting line of the fixed drying cylinder 3 along the circumferential direction is 93 degrees.
As shown in fig. 1 to 4, the fixed drying cylinder 3 has an included angle of 93 ° on the top full length and circumference as shown in fig. 2, and includes a plurality of groups of low-temperature catalytic gas medium-long wave heating modules 4, which are 6X19=114 in the present embodiment.
Each group of low-temperature catalytic gas medium-long wave heating modules 4 is provided with an independent gas valve 11 and a control unit. Old aggregate gets into the jacket layer between rotary drying cylinder 2 and the fixed drying cylinder 3 from the top feed inlet of fixed drying cylinder 3, when old aggregate was in the scope of circumference 93 contained angles, because the infrared spectrum that old aggregate frequency spectrum and gas low temperature catalysis produced is close consequently to transmit heat fast in the radiation range, because the heat transfer process is the non-contact mode, from inside to outside, consequently the low temperature can only produce a small amount of pitch flue gas, a small amount of flue gas gets into the flue gas of the outer flame of the high temperature through high temperature incineration and aggregate of main burning in the circumferential weld between rotary drying cylinder 2 and the fixed drying cylinder 3 and discharges together.
Claims (5)
1. The utility model provides a long wave drying drum in low temperature catalysis gas which characterized in that: the drying device comprises a rack (8), wherein a fixed drying cylinder (3) is arranged on the rack (8), a rotary drying cylinder (2) and the fixed drying cylinder (3) are coaxially arranged, the rotary drying cylinder (2) can rotate relative to the fixed drying cylinder (3), an old aggregate feeding area is formed between the rotary drying cylinder (2) and the fixed drying cylinder (3), an old aggregate feeding hole (15) is formed in the old aggregate feeding area, and an outer winnowing pan (5) for conveying old aggregates in the axial direction is arranged on the outer surface of the fixed drying cylinder (3) corresponding to the old aggregate feeding area;
a new aggregate feeding area is formed in the inner cavity of the rotary drying drum (2), an inner material plate (6) for conveying new aggregates along the axial direction is arranged on the inner wall of the rotary drying drum (2), a new aggregate discharging port (12) is arranged on the rotary drying drum (2), the new aggregate discharging port (12) is used for communicating the new aggregate feeding area with the new aggregate feeding area, a gas burner (1) is arranged on one axial side of the rotary drying drum (2), and a flue gas outlet (15) and a new aggregate feeding port (16) are arranged on the other axial side of the rotary drying drum (2);
a new aggregate feed opening (13) communicated with the new aggregate feeding area and an old aggregate feed opening (14) communicated with the old aggregate feeding area are formed in the fixed drying cylinder (3);
the fixed drying cylinder (3) surface sets up a plurality of low temperature catalysis gas medium-long wave heating module (4) along the axial, every all set up a gas valve (11) on low temperature catalysis gas medium-long wave heating module (4) to heating old aggregate feeding district, rotatory drying drum (2) rotate at the during operation.
2. The low temperature catalytic gas medium wavelength drying drum of claim 1, wherein: the outer winnowing pans (5) are spirally arranged on the outer surface of the rotary drying drum (2), and the working surface of each outer winnowing pan (5) is an arc-shaped surface.
3. The low temperature catalytic gas medium wavelength drying drum of claim 1, wherein: the axial two ends of the rotary drying drum (2) are respectively connected with driven wheels (9) in a sealing mode, each driven wheel (9) is in press fit with a driving wheel (10) arranged on the rack (8) and driven to operate by the driving wheel (10), and the driving wheel (10) is driven to operate by a driving mechanism (7) arranged on the rack (8).
4. A low temperature catalytic gas medium wavelength drying drum as claimed in claim 3 wherein: the flue gas outlet (15) is arranged above the new aggregate feeding hole (16).
5. The low temperature catalytic gas medium wavelength drying drum of claim 1, wherein: the low-temperature catalytic gas medium and long wave heating module (4) penetrates through the top of the fixed drying cylinder (3) along the axial direction, and the included angle between the two ends of the low-temperature catalytic gas medium and long wave heating module (4) and the central connecting line of the fixed drying cylinder (3) along the circumferential direction is 93 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364403.3A CN111058355A (en) | 2019-12-26 | 2019-12-26 | Low-temperature catalytic gas medium-long wave drying drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364403.3A CN111058355A (en) | 2019-12-26 | 2019-12-26 | Low-temperature catalytic gas medium-long wave drying drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111058355A true CN111058355A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911364403.3A Pending CN111058355A (en) | 2019-12-26 | 2019-12-26 | Low-temperature catalytic gas medium-long wave drying drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111058355A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905313A (en) * | 2023-09-12 | 2023-10-20 | 福建省铁拓机械股份有限公司 | Double-return-stroke internal circulation asphalt mixture drying roller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5513443A (en) * | 1995-01-13 | 1996-05-07 | Asphalt Drum Mixers, Inc. | Dryer for aggregate and reclaimed asphalt products |
| WO1997016600A1 (en) * | 1995-11-02 | 1997-05-09 | Amomatic Oy | Method and apparatus for heating rock material |
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| CN103397589A (en) * | 2013-08-04 | 2013-11-20 | 郴州市三联路面机械有限责任公司 | Roller used for heating, drying and continuous stirring to produce thermal regeneration mixture |
| CN104782759A (en) * | 2015-03-26 | 2015-07-22 | 同济大学 | Methane infrared radiation roller grain drier |
| CN105297593A (en) * | 2015-11-13 | 2016-02-03 | 福建南方路面机械有限公司 | Continuous single-roller asphalt mixture stirring device and method |
| CN105926412A (en) * | 2016-04-29 | 2016-09-07 | 中山市易路美道路养护科技有限公司 | A two-way mixing drum |
| CN106091625A (en) * | 2016-07-11 | 2016-11-09 | 周海波 | Gas catalysis nonflame infrared radiation heating roller drying machine |
| CN106440701A (en) * | 2016-09-26 | 2017-02-22 | 焦作市真节能干燥设备研发有限公司 | Screening and flow distribution device for large hard objects and materials in rollers |
| CN106702852A (en) * | 2016-11-22 | 2017-05-24 | 三汽车制造有限公司 | Asphalt roller and asphalt treatment system |
| CN207484236U (en) * | 2017-09-06 | 2018-06-12 | 福建铁拓机械有限公司 | A kind of full regenerative system of pitch plantmix heat |
| CN109853332A (en) * | 2019-04-04 | 2019-06-07 | 陕西达刚筑路环保设备有限公司 | A kind of hot in-plant reclaimed material heating device |
| CN209412650U (en) * | 2018-11-28 | 2019-09-20 | 博尔莫斯(天津)科技发展有限公司 | Rotary drum for drying stones |
-
2019
- 2019-12-26 CN CN201911364403.3A patent/CN111058355A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5513443A (en) * | 1995-01-13 | 1996-05-07 | Asphalt Drum Mixers, Inc. | Dryer for aggregate and reclaimed asphalt products |
| WO1997016600A1 (en) * | 1995-11-02 | 1997-05-09 | Amomatic Oy | Method and apparatus for heating rock material |
| CN101182969A (en) * | 2007-12-04 | 2008-05-21 | 镇江华晨华通路面机械有限公司 | Adverse current type far infrared and flame dual heating type drying barrel |
| CN103103908A (en) * | 2013-02-01 | 2013-05-15 | 福建南方路面机械有限公司 | Asphalt mixture drying drum |
| CN103397589A (en) * | 2013-08-04 | 2013-11-20 | 郴州市三联路面机械有限责任公司 | Roller used for heating, drying and continuous stirring to produce thermal regeneration mixture |
| CN104782759A (en) * | 2015-03-26 | 2015-07-22 | 同济大学 | Methane infrared radiation roller grain drier |
| CN105297593A (en) * | 2015-11-13 | 2016-02-03 | 福建南方路面机械有限公司 | Continuous single-roller asphalt mixture stirring device and method |
| CN105926412A (en) * | 2016-04-29 | 2016-09-07 | 中山市易路美道路养护科技有限公司 | A two-way mixing drum |
| CN106091625A (en) * | 2016-07-11 | 2016-11-09 | 周海波 | Gas catalysis nonflame infrared radiation heating roller drying machine |
| CN106440701A (en) * | 2016-09-26 | 2017-02-22 | 焦作市真节能干燥设备研发有限公司 | Screening and flow distribution device for large hard objects and materials in rollers |
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| CN207484236U (en) * | 2017-09-06 | 2018-06-12 | 福建铁拓机械有限公司 | A kind of full regenerative system of pitch plantmix heat |
| CN209412650U (en) * | 2018-11-28 | 2019-09-20 | 博尔莫斯(天津)科技发展有限公司 | Rotary drum for drying stones |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905313A (en) * | 2023-09-12 | 2023-10-20 | 福建省铁拓机械股份有限公司 | Double-return-stroke internal circulation asphalt mixture drying roller |
| CN116905313B (en) * | 2023-09-12 | 2023-12-05 | 福建省铁拓机械股份有限公司 | Double-return-stroke internal circulation asphalt mixture drying roller |
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Application publication date: 20200424 |