CN104762865A - Anti-aging equipment and method for batch-type asphalt mixing tower - Google Patents
Anti-aging equipment and method for batch-type asphalt mixing tower Download PDFInfo
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- CN104762865A CN104762865A CN201510108712.XA CN201510108712A CN104762865A CN 104762865 A CN104762865 A CN 104762865A CN 201510108712 A CN201510108712 A CN 201510108712A CN 104762865 A CN104762865 A CN 104762865A
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Abstract
The invention discloses anti-aging equipment and method for a batch-type asphalt mixing tower. The equipment comprises a blender whose inner top face is equipped with an oxygen content monitoring device and a gas pressure monitoring device. The bender is further connected with a material weighing machine, an asphalt weighing machine, an inert gas storing device, an inert gas recycling device and a gas-discharging pressure-reducing device. Inert gases such as nitrogen and carbon dioxide are sent into the sealed blender, so that the contact opportunity of asphalt and oxygen can be reduced, and the aims of increasing the internal gas pressure in the blender and reducing volatilization of light oil are achieved. The higher blending temperature and the longer blending time are achieved, so that mineral aggregate wrapping degree of the asphalt and the blending uniformity can be improved. The oxygen content and the gas pressure in the blender can be monitored, so that the filling amount of the inert gases can be reasonably controlled. An oxygen removing device in the inert gas recycling device can utilize fuel combustion in the device to remove oxygen and the inert gases recycled after the oxygen removing process are conveyed to the inert gas storing device through a pipeline.
Description
Technical field
The invention belongs to highway construction equipment technical field, relate to a kind of asphalt mixture mixing building, be specifically related to a kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building.
Background technology
In asphalt mixture mixing process, pitch is that 5-15 μm of thick filminess contacts with hot mineral aggregate and mixes under the hot conditions of 150 DEG C-170 DEG C, suddenly high temperature is stood on the one hand, contact hot air again on the one hand, lightweight oil content is caused to volatilize fast, and with oxygen generation chemical reaction, become the stage that ageing of asphalt is the most violent.According to surveying and determination, after mix, the needle penetration of No. 40/60 pitch is reduced to 85% before mix, the needle penetration of No. 60/80 pitch is reduced to 80%, somebody points out, aging be almost equivalent to it about 10 years aging in a state of use that pitch occurs in mix process, it can thus be appreciated that mix process medium pitch is aging serious.
For reducing the aging of mix process medium pitch, prior art is devoted to adopt lower mix temperature and shorten duration of mixing on the one hand, is then devoted to product such as research and development age resister, warm-mixing agent etc. on the other hand.Wherein, such as, point out in U.S. SHRP achievement in research that the mix temperature of bituminous mixture must not more than 175 DEG C, but temperature reduces, asphalt viscosity increases mobility thereupon and is also deteriorated, shorten duration of mixing again, be obviously unfavorable for that pitch is accompanied by and the uniformity coefficient of mix wrapping up in of mineral aggregate.Moreover with regard to prior art, even the temperature of 175 DEG C, mix is aging still very serious, does not tackle the problem at its root.Add age resister, warm-mixing agent has certain help to reducing the aging of mix process medium pitch, but fail to obtain large-scale application, on the one hand because cost improves many, these additives more or less also have adverse influence to Asphalt Mixture Performance on the other hand.Thinking conventionally, is obviously difficult to the problem of aging solving mix process medium pitch well.
Consider that current duration of mixing is difficult to further shortening, mix temperature is difficult to further reduction, additive is used to have again the present situation of other adverse effects, the present invention sets about improving device structure, a kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building is proposed, to reduce aging in heating mix process of pitch.
Summary of the invention
The object of the present invention is to provide a kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building, to overcome the deficiencies in the prior art, the present invention fills the inert gas such as nitrogen and carbon dioxide in agitator, the chance that pitch contacts with oxygen can not only be reduced, agitator internal gas pressure can also be improved, reach the object reducing the volatilization of lightweight oil content, by oxygen content and air pressure in monitoring agitator, the charging amount of conservative control inert gas.
For achieving the above object, the present invention adopts following technical scheme:
An anti-aging equipment for intermittent asphalt mixture mixing building, is characterized in that, comprise inert gas storaging device, device for reclaiming inert gas, oxygen content monitoring device, air pressure monitoring device, exhaust decompression device, agitator, mineral aggregate weigher, pitch weigher; Described agitator inside top surface is provided with oxygen content monitoring device and air pressure monitoring device; Described agitator is provided with exhaust decompression device; Agitator is provided with mineral aggregate import, pitch import, gas feed, gas vent; Mineral aggregate weigher, pitch weigher, inert gas storaging device, device for reclaiming inert gas are connected with agitator respectively by mineral aggregate import, pitch import, gas feed, gas vent, exhaust decompression device, mineral aggregate weigher, pitch weigher, inert gas storaging device, are equipped with valve between device for reclaiming inert gas and agitator.
Further, described agitator is blade agitators, and agitator inside top surface is provided with support, and support is provided with axis of rotation, and axis of rotation is provided with some blades.
Further, in described device for reclaiming inert gas, middle part is provided with deaerating plant, and device for reclaiming inert gas lower end is provided with the pipeline be connected with inert gas storaging device.
Further, described agitator lower end is provided with discharging opening.
An anti-aging method for intermittent asphalt mixture mixing building, comprises the following steps:
1), according to the result of Bitumen Mix Design, by pitch, breeze, gathering materials weighs, and agitator sent into by the weigher respectively via correspondence, closes the valve between weigher and agitator;
2), open inert gas storaging device, inert gas fills via inert gas storaging device and enters agitator, and open device for reclaiming inert gas, air and the inert gas mist of discharge enter device for reclaiming inert gas simultaneously; By oxygen content in oxygen content monitoring device monitoring agitator, oxygen content closes device for reclaiming inert gas after being reduced to desired value, continue to fill inert gas and improve agitator internal gas pressure, by the charging amount of air pressure monitoring device conservative control inert gas, if air pressure is excessive, opens exhaust decompression device and be exhausted decompression;
3), in agitator heat up, after reaching desired temperature in agitator, start mixer, axis of rotation drives blade rotation, realizes breeze, gathers materials, the abundant stirring of pitch;
4), stirred after open device for reclaiming inert gas, the gas in agitator by the deaerating plant in device for reclaiming inert gas via Cemented filling in inert gas storaging device;
5), open the discharging opening of agitator lower end, obtain finished asphalt compound.
Further, reducing oxidation by filling inert gas in agitator, improving air pressure and reducing the volatilization of lightweight oil content.
Further, the oxygen that mixes in the fuel combustion removing inert gas of the gas in agitator in deaerating plant, the inert gas reclaimed after deoxygenation via Cemented filling in inert gas storaging device.
Compared with prior art, the present invention has following useful technique effect:
The anti-aging equipment that the devices such as the present invention adds a set of by inert gas storaging device on the basis of improving existing intermittent asphalt mixture mixing building, device for reclaiming inert gas, oxygen content monitoring device, air pressure monitoring device, exhaust decompression are formed.In airtight agitator, fill the inert gas such as nitrogen and carbon dioxide, not only reduce the chance that pitch contacts with oxygen, agitator internal gas pressure can also be improved, reach the object reducing the volatilization of lightweight oil content.By oxygen content and air pressure in monitoring agitator, the charging amount of conservative control inert gas.Ensure that the supply of inert gas in conjunction with device for reclaiming inert gas and storage device and recycle.Higher mix temperature and longer duration of mixing can be realized, improve pitch and wrapping up in of mineral aggregate is accompanied by and the uniformity coefficient of mix.The recovery of inert gas can be realized and recycle, not needing extra purchase or production inert gas.
Accompanying drawing explanation
Fig. 1 is a kind of anti-aging equipment schematic diagram of intermittent asphalt mixture mixing building.
Wherein, 1, inert gas storaging device; 2, oxygen content monitoring device; 3, air pressure monitoring device; 4, exhaust decompression device; 5, agitator; 6, mineral aggregate weigher; 7, pitch weigher; 8, valve; 9, discharging opening; 10, blade; 11, axis of rotation; 12, support; 13, device for reclaiming inert gas; 14, deaerating plant; 15, pipeline.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
A kind of anti-aging equipment of intermittent asphalt mixture mixing building as shown in Figure 1, comprise inert gas storaging device 1, device for reclaiming inert gas 13, oxygen content monitoring device 2, air pressure monitoring device 3, exhaust decompression device 4, agitator 5, described agitator 5 inside top surface is provided with oxygen content monitoring device 2 and air pressure monitoring device 3, and agitator 5 is externally connected to mineral aggregate weigher 6, pitch weigher 7, inert gas storaging device 1, device for reclaiming inert gas 13 and exhaust decompression device 4; Mineral aggregate weigher 6, pitch weigher 7, inert gas storaging device 1, device for reclaiming inert gas 13 and between exhaust decompression device 4 and agitator 5, valve 8 is all installed; Described agitator 5 is blade agitators, and blade 10 is fixed on axis of rotation 11, and axis of rotation 11 is arranged on the support 12 of agitator 5 inside top surface; In described device for reclaiming inert gas 13, middle part is provided with deaerating plant 14, and device for reclaiming inert gas 13 is communicated with by pipeline 15 with inert gas storaging device 1.
A kind of anti-aging method using the intermittent asphalt mixture mixing building of the anti-aging equipment of a kind of intermittent asphalt mixture mixing building of foregoing invention, after described intermittent asphalt mixture mixing building opening of device, load weighted pitch is sent into agitator 5 via pitch weigher 7, by load weighted breeze with gather materials and send into agitator 5 via mineral aggregate weigher 6, open inert gas storaging device 1 valve, inert gas fills via inert gas storaging device 1 and enters agitator 5, open device for reclaiming inert gas 13 valve simultaneously, the air of discharging and inert gas mist enter device for reclaiming inert gas 13.Oxygen content in agitator 5 is monitored by oxygen content monitoring device 2, oxygen content closes device for reclaiming inert gas 13 valve after being reduced to desired value, continue to fill inert gas and improve agitator 5 internal gas pressure, by the charging amount of air pressure monitoring device 3 conservative control inert gas, if air pressure is excessive, opens exhaust decompression device 4 and be exhausted decompression; Then improve temperature in agitator 5, after agitator 5 reaches desired temperature, start agitator 5, axis of rotation 11 is with moving vane 10 to rotate, and realizes breeze, gathers materials, the stirring of pitch.Open device for reclaiming inert gas 13 after stirring completes and reclaim inert gas, deaerating plant 14 can utilize fuel combustion wherein to remove the oxygen mixed in inert gas, and the inert gas reclaimed after deoxygenation is transported in inert gas storaging device 1 via pipeline 15.Open discharging opening 9, get product material.
Claims (7)
1. the anti-aging equipment of an intermittent asphalt mixture mixing building, it is characterized in that, comprise inert gas storaging device (1), oxygen content monitoring device (2), air pressure monitoring device (3), exhaust decompression device (4), agitator (5), mineral aggregate weigher (6), pitch weigher (7), device for reclaiming inert gas (13); Described agitator (5) inside top surface is provided with oxygen content monitoring device (2) and air pressure monitoring device (3); Described agitator (5) is provided with exhaust decompression device (4); Agitator (5) is provided with mineral aggregate import, pitch import, gas feed, gas vent; Mineral aggregate weigher (6), pitch weigher (7), inert gas storaging device (1), device for reclaiming inert gas (13) are connected with agitator (5) respectively by mineral aggregate import, pitch import, gas feed, gas vent, exhaust decompression device (4), mineral aggregate weigher (6), pitch weigher (7), inert gas storaging device (1), are equipped with valve (8) between device for reclaiming inert gas (13) and agitator (5).
2. the anti-aging equipment of a kind of intermittent asphalt mixture mixing building as claimed in claim 1, it is characterized in that, described agitator (5) is blade agitators, agitator (5) inside top surface is provided with support (12), support (12) is provided with axis of rotation (11), axis of rotation (11) is provided with some blades (10).
3. the anti-aging equipment of a kind of intermittent asphalt mixture mixing building as claimed in claim 1, it is characterized in that, in described device for reclaiming inert gas (13), middle part is provided with deaerating plant (14), and device for reclaiming inert gas (13) lower end is provided with the pipeline (15) be connected with inert gas storaging device (1).
4. the anti-aging equipment of a kind of intermittent asphalt mixture mixing building as claimed in claim 2, is characterized in that, described agitator (5) lower end is provided with discharging opening (9).
5. use an anti-aging method for the intermittent asphalt mixture mixing building of the anti-aging equipment of a kind of intermittent asphalt mixture mixing building as claimed in claim 2, it is characterized in that, comprise the following steps:
1), according to the result of Bitumen Mix Design, by pitch, breeze, gathering materials weighs, agitator (5) sent into by weigher respectively via correspondence, closes the valve (8) between weigher and agitator (5);
2) inert gas storaging device (1), is opened, inert gas fills via inert gas storaging device (1) and enters agitator (5), open device for reclaiming inert gas (13), the air of discharge and inert gas mist enter device for reclaiming inert gas (13) simultaneously; By oxygen content monitoring device (2) monitoring agitator (5) interior oxygen content, oxygen content closes device for reclaiming inert gas (13) after being reduced to desired value, continue to fill inert gas and improve agitator (5) internal gas pressure, by the charging amount of air pressure monitoring device (3) conservative control inert gas, if air pressure is excessive, opens exhaust decompression device (4) and be exhausted decompression;
3), heat up in agitator (5), after reaching desired temperature in agitator (5), start mixer (5), axis of rotation (11) band moving vane (10) rotates, and realizes breeze, gathers materials, the abundant stirring of pitch;
4), stirred after open device for reclaiming inert gas (13), the gas in agitator (5) is transported in inert gas storaging device (1) by the deaerating plant (14) in device for reclaiming inert gas (13) via pipeline (15);
5), open the discharging opening (9) of agitator (5) lower end, obtain finished asphalt compound.
6. the anti-aging method of a kind of intermittent asphalt mixture mixing building as claimed in claim 5, is characterized in that, reduces oxidation by filling inert gas in agitator (5), improves air pressure and reduces the volatilization of lightweight oil content.
7. the anti-aging method of a kind of intermittent asphalt mixture mixing building as claimed in claim 5, it is characterized in that, the oxygen mixed in the fuel combustion removing inert gas of gas in agitator (5) in deaerating plant (14), the inert gas reclaimed after deoxygenation is transported in inert gas storaging device (1) via pipeline (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510108712.XA CN104762865B (en) | 2015-03-12 | 2015-03-12 | A kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building |
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| CN201510108712.XA CN104762865B (en) | 2015-03-12 | 2015-03-12 | A kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building |
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| CN104762865A true CN104762865A (en) | 2015-07-08 |
| CN104762865B CN104762865B (en) | 2016-05-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706407A (en) * | 2017-03-14 | 2017-05-24 | 华南理工大学 | Device and method for automatically molding emulsified asphalt mixture test piece |
| CN108086115A (en) * | 2017-12-22 | 2018-05-29 | 湖南望隆企业管理咨询有限公司 | A kind of asphalt roads fills trimming device |
| CN109282611A (en) * | 2018-11-20 | 2019-01-29 | 潍坊市精华粉体工程设备有限公司 | A kind of heating furnace for the processing of mesophase pitch oxidative stabilization |
| CN110394087A (en) * | 2019-07-10 | 2019-11-01 | 南京道尔顿化学技术有限公司 | Mixing arrangement of the one kind for the production of ((3R, 5R) -5- fluorine resources -3- base) t-butyl carbamate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025057A (en) * | 1972-11-03 | 1977-05-24 | Pavement Systems, Inc. | Equipment for making asphalt paving compositions |
| FR2663967A1 (en) * | 1990-07-02 | 1992-01-03 | Ermont Cm | Method and device for long-term storage of a bituminous material, such as coated chipping (mix) |
| CN201702865U (en) * | 2010-06-25 | 2011-01-12 | 栾松森 | Asphalt concrete batching &mixing plant |
| CN202492784U (en) * | 2012-02-16 | 2012-10-17 | 福建南方路面机械有限公司 | Intermittent type asphalt stirring equipment |
| CN203048850U (en) * | 2012-12-03 | 2013-07-10 | 长安大学 | Anti-aging modified asphalt preparation device |
-
2015
- 2015-03-12 CN CN201510108712.XA patent/CN104762865B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025057A (en) * | 1972-11-03 | 1977-05-24 | Pavement Systems, Inc. | Equipment for making asphalt paving compositions |
| FR2663967A1 (en) * | 1990-07-02 | 1992-01-03 | Ermont Cm | Method and device for long-term storage of a bituminous material, such as coated chipping (mix) |
| CN201702865U (en) * | 2010-06-25 | 2011-01-12 | 栾松森 | Asphalt concrete batching &mixing plant |
| CN202492784U (en) * | 2012-02-16 | 2012-10-17 | 福建南方路面机械有限公司 | Intermittent type asphalt stirring equipment |
| CN203048850U (en) * | 2012-12-03 | 2013-07-10 | 长安大学 | Anti-aging modified asphalt preparation device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706407A (en) * | 2017-03-14 | 2017-05-24 | 华南理工大学 | Device and method for automatically molding emulsified asphalt mixture test piece |
| CN108086115A (en) * | 2017-12-22 | 2018-05-29 | 湖南望隆企业管理咨询有限公司 | A kind of asphalt roads fills trimming device |
| CN109282611A (en) * | 2018-11-20 | 2019-01-29 | 潍坊市精华粉体工程设备有限公司 | A kind of heating furnace for the processing of mesophase pitch oxidative stabilization |
| CN110394087A (en) * | 2019-07-10 | 2019-11-01 | 南京道尔顿化学技术有限公司 | Mixing arrangement of the one kind for the production of ((3R, 5R) -5- fluorine resources -3- base) t-butyl carbamate |
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| Publication number | Publication date |
|---|---|
| CN104762865B (en) | 2016-05-25 |
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