CN104762865B - A kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building - Google Patents
A kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building Download PDFInfo
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- CN104762865B CN104762865B CN201510108712.XA CN201510108712A CN104762865B CN 104762865 B CN104762865 B CN 104762865B CN 201510108712 A CN201510108712 A CN 201510108712A CN 104762865 B CN104762865 B CN 104762865B
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- inert gas
- agitator
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- reclaiming
- pitch
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Abstract
The invention discloses a kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building, comprise that inside top surface is provided with the agitator of oxygen content monitoring device and air pressure monitoring device; Agitator is also connected with material weigher, pitch weigher, inert gas storaging device, device for reclaiming inert gas and exhaust decompression device; In airtight agitator, fill the inert gases such as nitrogen and carbon dioxide, not only can reduce the chance that pitch contacts with oxygen, can also improve agitator internal gas pressure, reach the object that reduces the volatilization of lightweight oil content. Can realize higher mix temperature and longer duration of mixing, improve that pitch is accompanied by wrapping up in of mineral aggregate and the uniformity coefficient of mix. By oxygen content and air pressure in monitoring agitator, rationally control the charging amount of inert gas. Deaerating plant in device for reclaiming inert gas can utilize fuel combustion wherein to remove oxygen, and the inert gas reclaiming after deoxygenation is transported to inert gas storaging device via pipeline.
Description
Technical field
The invention belongs to road engineering equipment technical field, relate to a kind of asphalt mixture mixing building, concreteRelate 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 filminess and the hot mineral aggregate that 5-15 μ m is thick and existsUnder the hot conditions of 150 DEG C-170 DEG C, contact mixes, and stands suddenly on the one hand high temperature, on the one hand contact againHot-air, causes lightweight oil content to volatilize fast, and with oxygen generation chemical reaction, become ageing of asphaltThe violent stage. According to surveying and determination, after mix, the needle penetration of No. 40/60 pitch is reduced to before mixThe needle penetration of 85%, No. 60/80 pitch is reduced to 80%, and somebody points out, pitch is sent out in mix processRaw aging its aging about 10 years under use state that be almost equivalent to, in mix process that hence one can see thatAgeing of asphalt is serious.
For reducing the aging of mix process medium pitch, prior art is devoted to adopt lower mixing on the one handClose temperature and shorten duration of mixing, be devoted on the other hand to research and develop the product such as age resister, warm-mixing agent.Wherein, for example in U.S. SHRP achievement in research, point out that the mix temperature of asphalt must not exceed175 DEG C, but temperature reduces asphalt viscosity and increases also variation of mobility thereupon, then while shortening mixBetween, be obviously unfavorable for that pitch is accompanied by wrapping up in of mineral aggregate and the uniformity coefficient of mix. Moreover, with regard to prior artEven, the temperature of 175 DEG C, mix is aging still very serious, does not fundamentally solve and asksTopic. Adding age resister, warm-mixing agent agingly has certain help to what reduce mix process medium pitch, butFail to obtain large-scale application, one side has improved many because of cost, these additives pair on the other handAsphalt Mixture Performance more or less also has adverse influence. According to the thinking of prior art, obviouslyBe difficult to solve well the problem of aging of mix process medium pitch.
Consider that current duration of mixing is difficult to further shortening, mix temperature is difficult to further reduction, usesAdditive has again the present situation of other adverse effects, and the present invention sets about device structure to improve, and proposes onePlant the anti-aging Apparatus and method for of intermittent asphalt mixture mixing building, to reduce pitch in heating mix mistakeAging in journey.
Summary of the invention
The object of the present invention is to provide a kind of anti-aging equipment and side of intermittent asphalt mixture mixing buildingMethod, to overcome the deficiencies in the prior art, the present invention fills nitrogen and carbon dioxide in agitatorDeng inert gas, can not only reduce the chance that pitch contacts with oxygen, can also improve agitator internal gas pressure,Reach the object that reduces the volatilization of lightweight oil content, by oxygen content and air pressure, rationally control in monitoring agitatorThe charging amount of inert gas processed.
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, comprises indifferent gasBody storage device, device for reclaiming inert gas, oxygen content monitoring device, air pressure monitoring device, exhaustDecompressor, agitator, mineral aggregate weigher, pitch weigher; Described agitator inside top surface is provided withOxygen content monitoring device and air pressure monitoring device; Described agitator is provided with exhaust decompression device; StirDevice is provided with mineral aggregate import, pitch import, gas feed, gas vent; Mineral aggregate weigher, pitch claimMeasuring device, inert gas storaging device, device for reclaiming inert gas enter by mineral aggregate import, pitch respectivelyMouth, gas feed, gas vent are connected with agitator, exhaust decompression device, mineral aggregate weigher, pitchBetween weigher, inert gas storaging device, device for reclaiming inert gas and agitator, be equipped with valve.
Further, described agitator is blade agitators, and agitator inside top surface is provided with support, supportOn rotating shaft is installed, rotating shaft is provided with some blades.
Further, in described device for reclaiming inert gas, middle part is provided with deaerating plant, inert gasRetracting device lower end is provided with the pipeline being 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,Send into agitator via corresponding weigher respectively, close the valve between weigher and agitator;
2), open inert gas storaging device, inert gas fills and enters via inert gas storaging deviceAgitator is opened device for reclaiming inert gas simultaneously, and the air of discharge and inert gas mist enterDevice for reclaiming inert gas; By oxygen content in oxygen content monitoring device monitoring agitator, oxygen containsAfter amount is reduced to desired value, close device for reclaiming inert gas, continue to fill inert gas and improve in agitatorAir pressure, rationally controls the charging amount of inert gas, if the excessive row of opening of air pressure by air pressure monitoring deviceGas decompressor carries out exhaust decompression;
3), give in agitator and heat up, in agitator, reach after desired temperature, start mixer, rotating shaftDrive blade rotation, realize breeze, gather materials, the abundant stirring of pitch;
4), open device for reclaiming inert gas after having stirred, the gas in agitator passes through inert gasDeaerating plant in retracting device is transported in inert gas storaging device via pipeline;
5), open the discharging opening of agitator lower end, obtain finished product asphalt.
Further, reduce oxidation by fill inert gas in agitator, improve air pressure and reduce lightweightOil content volatilization.
Further, the gas in agitator is removed in inert gas through the fuel combustion in deaerating plantThe oxygen mixing, the inert gas reclaiming after deoxygenation is transported to inert gas storaging device via pipelineIn.
Compared with prior art, the present invention has following useful technique effect:
The present invention increased on to the improved basis of existing intermittent asphalt mixture mixing building a set of byInert gas storaging device, device for reclaiming inert gas, oxygen content monitoring device, air pressure monitoring device,The anti-aging equipment that the device such as exhaust decompression forms. In airtight agitator, fill nitrogen and carbon dioxideDeng inert gas, not only reduce the chance that pitch contacts with oxygen, can also improve agitator internal gas pressure,Reach the object that reduces the volatilization of lightweight oil content. By oxygen content and air pressure, rationally control in monitoring agitatorThe charging amount of inert gas processed. Ensure inert gas in conjunction with device for reclaiming inert gas and storage deviceSupply and recycle. Can realize higher mix temperature and longer duration of mixing, improve pitch pairThe wrapping up in of mineral aggregate is accompanied by and the uniformity coefficient of mix. Can realize the recovery of inert gas and recycle, noNeed the extra inert gas of buying or produce.
Brief description of the drawings
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, rotating shaft; 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:
An anti-aging equipment for intermittent asphalt mixture mixing building, comprises inert gas as shown in Figure 1Storage 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 are provided with oxygen content monitoring device 2With air pressure monitoring device 3, agitator 5 is externally connected to mineral aggregate weigher 6, pitch weigher 7, indifferent gasBody storage device 1, device for reclaiming inert gas 13 and exhaust decompression device 4; Mineral aggregate weigher 6, dropBlue or green weigher 7, inert gas storaging device 1, device for reclaiming inert gas 13 and exhaust decompression device 4And valve 8 is all installed between agitator 5; Described agitator 5 is blade agitators, and blade 10 is fixingOn rotating shaft 11, rotating shaft 11 is arranged on the support 12 of agitator 5 inside top surface; Described inertiaThe interior middle part of gas concentration unit 13 is provided with deaerating plant 14, device for reclaiming inert gas 13 and inert gasStorage device 1 is communicated with by pipeline 15.
A kind of batch (-type) of the anti-aging equipment that uses a kind of intermittent asphalt mixture mixing building of foregoing inventionThe anti-aging method in asphalt mixture mixing building, 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 and gather materials throughSend into agitator 5 by mineral aggregate weigher 6, open inert gas storaging device 1 valve, inert gas warpFill and enter agitator 5 by inert gas storaging device 1, open device for reclaiming inert gas 13 valves simultaneouslyDoor, the air of discharge and inert gas mist enter device for reclaiming inert gas 13. Contain by oxygenAmount monitoring device 2 is monitored the interior oxygen content of agitator 5, and oxygen content is closed inertia after being reduced to desired valueGas concentration unit 13 valves, continue to fill inert gas and improve agitator 5 internal gas pressures, supervise by air pressureSurvey device 3 and rationally control the charging amount of inert gas, if the excessive exhaust decompression device 4 of opening of air pressure entersRow exhaust decompression; Then improve the interior temperature of agitator 5, agitator 5 reaches after desired temperature, and startup is stirredMix device 5, rotating shaft 11 is with moving vane 10 to rotate, and realizes breeze, gathers materials, the stirring of pitch. StirAfter having mixed, open device for reclaiming inert gas 13 and reclaim inert gas, deaerating plant 14 can utilize itIn fuel combustion remove the oxygen mixing in inert gas, the inert gas reclaiming after deoxygenation is via pipeRoad 15 is transported in inert gas storaging device 1. Open discharging opening 9, material gets product.
Claims (5)
1. an anti-aging equipment for intermittent asphalt mixture mixing building, is characterized in that, comprises inertiaGas storage device (1), oxygen content monitoring device (2), air pressure monitoring device (3), exhaust decompressionDevice (4), agitator (5), mineral aggregate weigher (6), pitch weigher (7) and inert gas reclaimDevice (13); It is gentle that described agitator (5) inside top surface is provided with oxygen content monitoring device (2)Press monitoring device (3); Described agitator (5) is provided with exhaust decompression device (4); Agitator (5)Be provided with mineral aggregate import, pitch import, gas feed, gas vent; Mineral aggregate weigher (6), pitchWeigher (7), inert gas storaging device (1), device for reclaiming inert gas (13) pass through respectivelyMineral aggregate import, pitch import, gas feed, gas vent are connected with agitator (5), exhaust decompression dressPut (4), mineral aggregate weigher (6), pitch weigher (7), inert gas storaging device (1),Between device for reclaiming inert gas (13) and agitator (5), be equipped with valve (8), described agitator (5)For blade agitators, agitator (5) inside top surface is provided with support (12), and support is provided with on (12)Rotating shaft (11), rotating shaft (11) is provided with some blades (10), and described inert gas reclaims dressPut middle part in (13) deaerating plant (14) is installed, device for reclaiming inert gas (13) lower end is provided withThe pipeline (15) being connected with inert gas storaging device (1).
2. the anti-aging equipment of a kind of intermittent asphalt mixture mixing building as claimed in claim 1, itsBe characterised in that, described agitator (5) lower end is provided with discharging opening (9).
3. one kind uses the anti-aging of a kind of intermittent asphalt mixture mixing building as claimed in claim 2The anti-aging method of equipment, is characterized in that, comprises the following steps:
1), according to the result of Bitumen Mix Design, by pitch, breeze, gathering materials weighs,Send into agitator (5) via corresponding weigher respectively, close between weigher and agitator (5)Valve (8);
2), open inert gas storaging device (1), inert gas is via inert gas storaging device (1)Fill and enter agitator (5), open device for reclaiming inert gas (13), the air of discharge and lazy simultaneouslyProperty gas mixture body enters device for reclaiming inert gas (13); By oxygen content monitoring device (2)The interior oxygen content of monitoring agitator (5), oxygen content is closed inert gas recovery dress after being reduced to desired valuePut (13), continue to fill inert gas and improve agitator (5) internal gas pressure, by air pressure monitoring device (3)Rationally control the charging amount of inert gas, if the excessive exhaust decompression device (4) of opening of air pressure carries out exhaustDecompression;
3), give in agitator (5) and heat up, agitator reaches after desired temperature in (5), starts and stirsMachine (5), rotating shaft (11) band moving vane (10) rotates, and realizes breeze, gathers materials, the filling of pitchDivide and stir;
4), open device for reclaiming inert gas (13) after having stirred, the gas in agitator (5)Be transported to lazy by the deaerating plant (14) in device for reclaiming inert gas (13) via pipeline (15)In property gas storage device (1);
5), open the discharging opening (9) of agitator (5) lower end, obtain finished product asphalt.
4. the anti-aging method of a kind of intermittent asphalt mixture mixing building as claimed in claim 3, itsBe characterised in that, reduce oxidation by fill inert gas in agitator (5), improve air pressure and reduce lightweightOil content volatilization.
5. the anti-aging method of a kind of intermittent asphalt mixture mixing building as claimed in claim 3, itsBe characterised in that, the gas in agitator (5) is removed inertia through the fuel combustion in deaerating plant (14)The oxygen mixing in gas, the inert gas reclaiming after deoxygenation is transported to indifferent gas via pipeline (15)In body storage device (1).
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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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| CN104762865B true CN104762865B (en) | 2016-05-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (2)
| 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 |
| FR2663967B1 (en) * | 1990-07-02 | 1994-03-04 | Ermont Cm | METHOD AND DEVICE FOR LONG-TERM STORAGE OF A BITUMINOUS MATERIAL, SUCH AS A COATING. |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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