CN102010604B - System and method for preparing rubber-modified asphalt - Google Patents
System and method for preparing rubber-modified asphalt Download PDFInfo
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- CN102010604B CN102010604B CN2010105348709A CN201010534870A CN102010604B CN 102010604 B CN102010604 B CN 102010604B CN 2010105348709 A CN2010105348709 A CN 2010105348709A CN 201010534870 A CN201010534870 A CN 201010534870A CN 102010604 B CN102010604 B CN 102010604B
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Abstract
The invention discloses a system and a method for preparing rubber-modified asphalt. The system comprises a substrate asphalt tank, a first asphalt pump, a primary heating tank, a second asphalt pump, a secondary heating tank, a mixing and swelling tank, a third asphalt pump, a rubber grinder, a development and storage tank, a fourth asphalt pump and a first discharge control valve which are communicated with one another sequentially by a pipeline, wherein the swelling tank is communicated with a feeder by the pipeline. The preparation method comprises the following steps of: (1) heating substrate asphalt to 110 to 130 DEG C, and rising temperature twice to 170 to 200 DEG C in a way that the temperature rising speed of the second time is more than the temperature rising speed of the first time; (2) feeding rubber powder in an amount which is 15 to 25 percent of that of the substrate asphalt by using the feeder; and (3) in the mixing and swelling tank, preserving the heat at 170 to 200 DEG C, performing mixing under stirring for 5 to 10 minutes, introducing the mixture into the development and storage tank by using the rubber grinder, preserving the heat at 170 to 200 DEG C, and performing mixing under stirring for 1 to 3 hours to obtain the rubber-modified asphalt.
Description
Technical field
The present invention relates to the production field of highway pavement modifying asphalt, particularly a kind of production system of rubber modified asphalt and preparation method.
Background technology
Along with the increase day by day of the rapid economy development and the volume of traffic, the use properties of road is required increasingly high, economize on resources and protect environment; Reduce the traffic noise of road surface driving, prolong service life of road surface, improve the rutting resistance on road surface; Reduce the reaction be full of cracks, increase the anti-slide performance on rainy day road surface, reduce maintenance costs; Improve the driving comfort level, reduce the thickness of paving, these performance requriementss provide direction to the study on the modification of bituminous material.Rubber modified asphalt has performances such as high-temperature stability, low temperature flexibility, resistance to deterioration, fatigue resistence, anti-water damageability, is even more ideal environment-friendly type ground surface material.
At present, the production system of domestic and international existing rubber modified asphalt adopts mostly mixes swelling can and grows the hold-up vessel realization, and adopts the heating of high temperature heat conductive oil pipe.Specifically be adding high temperature matrix pitch and rubber and stirring in mixing swelling can, directly pump into the growth hold-up vessel then and store growth.Its shortcoming is: the speed that (1) matrix pitch adopts heat-conducting oil pipes to heat up separately is slower, and heat utilization efficiency is not high; (2) use the mixing swelling can to need long-time the stirring separately, production efficiency is lower, and the production cycle is long; (3) unidirectional Production Flow Chart causes difficult quality control, and the mass discrepancy of each batch is big, is difficult to guarantee the specification of quality of building the road.Especially the temperature of rubber modified asphalt production requirement matrix pitch high (190 ℃～200 ℃) is mixed the swelling can heating, churning time is longer, and production efficiency is lower, and the matrix pitch easy ageing.
Summary of the invention
One object of the present invention is to provide a kind of production system of rubber modified asphalt, can be through dividing echelon heating matrix pitch, and heat utilization efficiency is high, produces continuous high-efficient, and the control of quality product consistence is easily.
Another object of the present invention is to provide the preparation method based on the rubber modified asphalt of above-mentioned production system, and its constant product quality is produced continuous high-efficient.
In order to reach the foregoing invention purpose, the present invention adopts following technical scheme to be achieved.Technical scheme one:
A kind of production system of rubber modified asphalt; It is characterized in that, comprise the matrix pitch jar that is communicated with successively through pipeline, first bitumenpump, first valve that once heats up jar, second bitumenpump, secondary temperature elevation jar, is rapidly heated jar, mixes swelling can, the 3rd bitumenpump, rubber mill, growth hold-up vessel, the 4th bitumenpump and control discharging; Said swelling can is communicated with feeder through pipeline.
The further improvement and the characteristics of present technique scheme are:
Be provided with circulating line between the inlet of said first valve and the mixing swelling can, circulating line is provided with second valve.
The heating power of said secondary temperature elevation jar is greater than the heating power of the jar that once heats up.
Said feeder adopts the spiral feeder.
Said growth hold-up vessel is at least two.
Said growth hold-up vessel is communicated with the 5th bitumenpump and the surplus material of construction withdrawing can in order through pipeline.
Said growth hold-up vessel adopts horizontal growth storage tank.
In the present technique scheme; Type of heating to matrix pitch adopts two intensification jars, can improve matrix pitch and get into the temperature of mixing swelling can, and the heating power of secondary temperature elevation jar is greater than the heating power of the jar that once heats up; Can improve the temperature of matrix pitch fast; Make of the influence reduction of the rubber powder of the cold conditions that gets into the mixing swelling can, improve swelling efficient, and can prevent the matrix pitch rapid ageing swelling temperature.
In the present technique scheme, at the inlet of first valve with mix between the swelling can and be provided with circulating line, circulating line is provided with second valve; When the modifying asphalt quality of growing hold-up vessel occurs badly, can mix swelling, growth once more to bad product through circulation line, guaranteeing the quality conformance of modifying asphalt, and then satisfy the specification of quality of engineering.
In the present technique scheme, grow hold-up vessel and be communicated with the 5th bitumenpump and the surplus material of construction withdrawing can in order, can conveniently reclaim the waste material in the construction through pipeline; Grow hold-up vessel and be at least two, can switch to use and grow hold-up vessel, carry out continuous production; It is horizontal to grow the hold-up vessel employing, and its body rotation is stirred, and is beneficial to dispersing and mixing.
Technical scheme two
A kind of preparation method of rubber modified asphalt, the production system based on above-mentioned rubber modified asphalt is characterized in that, comprises following concrete steps:
(1), the matrix pitch in the matrix pitch jar is heated to 110～130 ℃ by normal temperature; Pump into the jar that once heats up then; Once be warmed up to 135～165 ℃, pump into the secondary temperature elevation jar again, secondary temperature elevation to 170～200 ℃; Pump into the mixing swelling can at last, wherein secondary temperature elevation speed is greater than a heat-up rate;
(2) the rubber powder input is mixed in the swelling can, the rubber powder input amount is 15%～25% of the matrix pitch amount of pumping into;
(3) in mixing swelling can, matrix pitch and rubber powder mixed 5～10 minutes 170～200 ℃ of insulated and stirred, grew hold-up vessel through feeding behind the rubber mill then, and 170～200 ℃ of insulated and stirred were mixed after 1～3 hour, promptly got.
The further improvement and the characteristics of present technique scheme are:
In the said step (1), matrix pitch was warmed up to 170～200 ℃ total time less than 3 hours, and jar temperature rise rate that wherein once heats up is 1～2 ℃/min, and secondary temperature elevation jar temperature rise rate is 2～3 ℃/min.
Said rubber powder is one or both in interior tire glue powder, the cover rubber powder.
In the present technique scheme; Type of heating to matrix pitch adopts two jars that heat up; Can improve the temperature that matrix pitch get into to mix swelling can, and the heating power of secondary temperature elevation jar is greater than the heating power that once heats up jar, wherein secondary temperature elevation speed can improve the temperature of matrix pitch fast greater than heat-up rate; Make of the influence reduction of the rubber powder of the cold conditions that gets into the mixing swelling can, improve swelling efficient swelling temperature; And matrix pitch was warmed up to 170～200 ℃ total time less than 3 hours, and jar temperature rise rate that wherein once heats up is 1～2 ℃/min, and secondary temperature elevation jar temperature rise rate is 2～3 ℃/min, can prevent the matrix pitch rapid ageing.
Description of drawings
Below in conjunction with description of drawings and embodiment the present invention is explained further details.
Fig. 1 is the structural representation of the production system of employing a kind of rubber modified asphalt of the present invention;
Wherein: P1, first bitumenpump; P2, second bitumenpump; P3, the 3rd bitumenpump; P4, the 4th bitumenpump; P5, the 5th bitumenpump; F1, first valve; F2, second valve; F3, the 3rd valve; F4, the 4th valve; F5, the 5th valve; F6, the 6th valve.
Embodiment
One, the production system of rubber modified asphalt
With reference to accompanying drawing 1, the production system of the rubber modified asphalt in the present embodiment, mainly comprise matrix pitch jar, first bitumenpump, once heat up jar, secondary temperature elevation jar, mix swelling can, 2 growth hold-up vessels, 5 bitumenpumps, 6 valves.
Matrix pitch jar, the first bitumenpump P1, once heat up jar, the second bitumenpump P2, secondary temperature elevation jar, mix swelling can successively through the pipeline connection; Constitute the preheating and the carrying path of matrix pitch; And the heating power of secondary temperature elevation jar is greater than the heating power of the jar that once heats up; Can improve the temperature of matrix pitch fast, make of the influence reduction of the rubber powder of the cold conditions that gets into the mixing swelling can, improve swelling efficient swelling temperature.
Mix swelling can and be communicated with feeder through pipeline, feeder adopts the spiral feeder, is used to realize the quantitative interpolation of rubber powder.The outlet that mixes swelling can is provided with the 3rd bitumenpump P3, and the outlet of the 3rd bitumenpump P3 is communicated with grows hold-up vessel.
In the present embodiment, adopted 2 of parallel connection to grow hold-up vessels, respectively through four pairs of valves (F3, F5), (F4 F6) realizes switching and uses.In addition, because of rubber modified asphalt viscosity is big, adopt horizontal growth hold-up vessel, its body rotates, and is beneficial to mix.
Two parallel connection outlets of growing hold-up vessel connect the 4th bitumenpump P4; The outlet of the 4th bitumenpump P4 is provided with the first valve F1; First valve F1 outlet is as discharge port; Be provided with circulating line between the inlet of the first valve F1 and the mixing swelling can, circulating line is provided with the second valve F2, is used for the switching of Control Circulation pipeline.Simultaneously, construction remains the material withdrawing can, the 5th bitumenpump P5 is communicated to two house stewards that grow hold-up vessels inlet front ends in order, and surplus reusing of expecting is used to construct.
Although more than combine accompanying drawing that embodiment of the present invention are described, the present invention is not limited to above-mentioned specific embodiments, and above-mentioned specific embodiments only is schematic, guiding, rather than restrictive.Those of ordinary skill in the art under the situation that does not break away from the scope that claim of the present invention protects, can also make a variety of forms under the enlightenment of this specification sheets, these all belong to the row of the present invention's protection.
Two, the preparation method of rubber modified asphalt
Embodiment 1:
(1) matrix pitch in the matrix pitch jar is heated to 130 ℃ by normal temperature, makes it become flow state, pump into the jar that once heats up then; Heated up (once heating up) in 30 minutes to 165 ℃; Pump into the secondary temperature elevation jar again, 15 minutes (secondary temperature elevation) pumps into the mixing swelling can at last to 200 ℃;
(2) be that the tyre rubber powder input is mixed in the swelling can in 30 orders～60 purposes with fineness, wherein the rubber powder input amount is 25% of the matrix pitch amount of pumping into;
(3) in mixing swelling can, matrix pitch and rubber powder were mixed 5 minutes 200 ℃ of insulated and stirred, grow hold-up vessel through feeding behind the rubber mill then, 200 ℃ of insulated and stirred were mixed after 1 hour, promptly got rubber modified asphalt.
Embodiment 2:
(1) matrix pitch in the matrix pitch jar is heated to 110 ℃ by normal temperature, pumps into the jar that once heats up then, heat up (once heating up) to 135 ℃, pumped into the secondary temperature elevation jar again in 20 minutes, and 15 minutes (secondary temperature elevation) pumps into the mixing swelling can at last to 170 ℃;
(2) be that 30 orders～60 purpose cover rubber powder inputs are mixed in the swelling can with fineness, wherein the rubber powder input amount is 25% of a matrix pitch amount;
(3) in mixing swelling can, matrix pitch and rubber powder were mixed 10 minutes 170 ℃ of insulated and stirred, grow hold-up vessel through feeding behind the rubber mill then, 170 ℃ of insulated and stirred were mixed after 3 hours, promptly got rubber modified asphalt.
Embodiment 3:
(1) matrix pitch in the matrix pitch jar is heated to 120 ℃ by normal temperature, pumps into the jar that once heats up then, heat up (once heating up) to 150 ℃, pumped into the secondary temperature elevation jar again in 25 minutes, and 13 minutes (secondary temperature elevation) pumps into the mixing swelling can at last to 185 ℃;
(2) be that 30 orders～60 purpose cover rubber powders are that 1: 1 input is mixed in the swelling can with interior tyre rubber powder mass ratio with fineness, wherein the rubber powder input amount is 20% of the matrix pitch amount of pumping into;
(3) in mixing swelling can, matrix pitch and rubber powder were mixed 7 minutes 185 ℃ of insulated and stirred, grow hold-up vessel through feeding behind the rubber mill then, 185 ℃ of insulated and stirred were mixed after 2 hours, promptly got rubber modified asphalt.
Embodiment 4:
(1) matrix pitch in the matrix pitch jar is heated to 125 ℃ by normal temperature, pumps into the jar that once heats up then, heat up (once heating up) to 165 ℃, pumped into the secondary temperature elevation jar again in 30 minutes, and 12 minutes (secondary temperature elevation) pumps into the mixing swelling can at last to 195 ℃;
(2) be that 30 orders～60 purpose cover rubber powders are that 1: 2 rubber powder input is mixed in the swelling can with interior tyre rubber powder mass ratio with fineness, wherein the rubber powder input amount is 18% of the matrix pitch amount of pumping into;
(3) in mixing swelling can, matrix pitch and rubber powder were mixed 6 minutes 195 ℃ of insulated and stirred, grow hold-up vessel through feeding behind the rubber mill then, 195 ℃ of insulated and stirred were mixed after 2 hours, promptly got rubber modified asphalt.
Embodiment 5:
(1) matrix pitch in the matrix pitch jar is heated to 120 ℃, pumps into the jar that once heats up then, heat up (once heating up) to 145 ℃, pumped into the secondary temperature elevation jar again in 23 minutes, and 13 minutes (secondary temperature elevation) pumps into the mixing swelling can at last to 175 ℃;
(2) be that 30 orders～60 purpose cover rubber powders are that 1: 3 rubber powder input is mixed in the swelling can with interior tyre rubber powder mass ratio with fineness, wherein the rubber powder input amount is 20% of a matrix pitch amount;
(3) in mixing swelling can, matrix pitch and rubber powder were mixed 9 minutes 175 ℃ of insulated and stirred, grow hold-up vessel through feeding behind the rubber mill then, 175 ℃ of insulated and stirred were mixed after 2 hours, promptly got rubber modified asphalt.
Embodiment 6:
(1) matrix pitch in the matrix pitch jar is heated to 115 ℃ by normal temperature, pumps into the jar that once heats up then, heat up (once heating up) to 155 ℃, pumped into the secondary temperature elevation jar again in 35 minutes, and 15 minutes (secondary temperature elevation) pumps into the mixing swelling can at last to 190 ℃;
(2) be that 30 orders～60 purpose cover rubber powders are that 1: 4 rubber powder input is mixed in the swelling can with interior tyre rubber powder mass ratio with fineness, wherein the rubber powder input amount is 20% of a matrix pitch amount;
(3) in mixing swelling can, matrix pitch and rubber powder were mixed 6 minutes 190 ℃ of insulated and stirred, grow hold-up vessel through feeding behind the rubber mill then, 190 ℃ of insulated and stirred were mixed after 1 hour, promptly got rubber modified asphalt.
It is as shown in the table that embodiment 1-6 prepares rubber modified asphalt performance index detected result.
Contrast can be known: the quality index of above-mentioned rubber modified asphalt is superior to The Ministry of Communications's proposed standard.
Although above specific embodiment is described embodiment of the present invention, the present invention is not limited to above-mentioned specific embodiment, and above-mentioned specific embodiment only is schematic, guiding, rather than restrictive.
Claims (9)
1. the production system of a rubber modified asphalt; It is characterized in that, comprise the matrix pitch jar that is communicated with successively through pipeline, first bitumenpump, first valve that once heats up jar, second bitumenpump, secondary temperature elevation jar, mixes swelling can, the 3rd bitumenpump, rubber mill, growth hold-up vessel, the 4th bitumenpump and control discharging; Said swelling can is communicated with feeder through pipeline; The heating power of said secondary temperature elevation jar is greater than the heating power of the jar that once heats up.
2. the production system of rubber modified asphalt according to claim 1 is characterized in that, is provided with circulating line between the inlet of said first valve and the mixing swelling can, and circulating line is provided with second valve.
3. the production system of rubber modified asphalt according to claim 1 is characterized in that, said feeder adopts the spiral feeder.
4. the production system of rubber modified asphalt according to claim 1 is characterized in that, said growth hold-up vessel is at least two.
5. the production system of rubber modified asphalt according to claim 1 is characterized in that, said growth hold-up vessel is communicated with the 5th bitumenpump and the surplus material of construction withdrawing can in order through pipeline.
6. the production system of rubber modified asphalt according to claim 1 is characterized in that, said growth hold-up vessel adopts horizontal growth hold-up vessel.
7. the preparation method of a rubber modified asphalt, the production system based on the described rubber modified asphalt of claim 1 is characterized in that, comprises following concrete steps:
(1), the matrix pitch in the matrix pitch jar is heated to 110～130 ℃ by normal temperature; Pump into the jar that once heats up then; Once be warmed up to 135～165 ℃, pump into the secondary temperature elevation jar again, secondary temperature elevation to 170～200 ℃; Pump into the mixing swelling can at last, wherein secondary temperature elevation speed is greater than a heat-up rate;
(2) the rubber powder input is mixed in the swelling can, the rubber powder input amount is 15%～25% of the matrix pitch amount of pumping into;
(3) in mixing swelling can, matrix pitch and rubber powder mixed 5～10 minutes 170～200 ℃ of insulated and stirred, grew hold-up vessel through feeding behind the rubber mill then, and 170～200 ℃ of insulated and stirred were mixed after 1～3 hour, promptly got.
8. according to the preparation method of the rubber modified asphalt of claim 7; It is characterized in that in the said step (1), matrix pitch was warmed up to 170～200 ℃ total time less than 3 hours; Jar temperature rise rate that wherein once heats up is 1～2 ℃/min, and secondary temperature elevation jar temperature rise rate is 2～3 ℃/min.
9. according to the preparation method of the rubber modified asphalt of claim 7, it is characterized in that said rubber powder is one or both in interior tire glue powder, the cover rubber powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105348709A CN102010604B (en) | 2010-11-08 | 2010-11-08 | System and method for preparing rubber-modified asphalt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105348709A CN102010604B (en) | 2010-11-08 | 2010-11-08 | System and method for preparing rubber-modified asphalt |
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| CN102010604A CN102010604A (en) | 2011-04-13 |
| CN102010604B true CN102010604B (en) | 2012-06-27 |
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Families Citing this family (11)
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| CN102691247B (en) * | 2012-06-07 | 2014-12-10 | 广西国创道路材料有限公司 | Asphalt development system |
| CN104016978B (en) * | 2014-06-06 | 2017-05-03 | 北京健坤和医药科技有限公司 | Palmatine hydrochloride crystal form C as well as preparation method thereof and application thereof in medicament composition or health-care product |
| CN105062535A (en) * | 2015-08-31 | 2015-11-18 | 句容宁武科技开发有限公司 | Method for continuously producing modified asphalt |
| CN105233781A (en) * | 2015-11-06 | 2016-01-13 | 天津海泰环保科技发展有限公司 | Preparing experiment platform and method for modifying asphalt through rubber powder |
| CN106243748B (en) * | 2016-08-04 | 2018-11-30 | 江西省交通工程集团有限公司 | A kind of modified pitch and preparation method thereof |
| CN106480802A (en) * | 2016-12-01 | 2017-03-08 | 三汽车制造有限公司 | Pitch heating system and asphalt mixing plant |
| CN106854849A (en) * | 2017-03-01 | 2017-06-16 | 重庆而为路面材料有限公司 | Composable, moveable bitumen concrete production system |
| CN107268385A (en) * | 2017-07-26 | 2017-10-20 | 湖北圣通石化有限公司 | A kind of modified pitch production line |
| CN107446607B (en) * | 2017-08-01 | 2023-06-16 | 东莞东交沥青有限公司 | Automatic temperature control heat exchange device for asphalt |
| CN109554991A (en) * | 2018-10-09 | 2019-04-02 | 中国石油化工股份有限公司 | A kind of cementitious matter preparation system for making colored road surface |
| CN113211691B (en) * | 2021-05-08 | 2022-05-03 | 益路恒丰衡水沥青科技有限公司 | Rubber asphalt production method based on microwave heating |
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| CN200951997Y (en) * | 2006-09-29 | 2007-09-26 | 上海浦东路桥建设股份有限公司 | Rubber powder asphalt producing device |
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| CN101418078A (en) * | 2008-12-11 | 2009-04-29 | 山东大山路桥工程有限公司 | Rubber powder modified asphalt device |
| CN101591473A (en) * | 2009-06-25 | 2009-12-02 | 李滢 | A kind of SBS modified asphalt production device and production method |
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- 2010-11-08 CN CN2010105348709A patent/CN102010604B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200951997Y (en) * | 2006-09-29 | 2007-09-26 | 上海浦东路桥建设股份有限公司 | Rubber powder asphalt producing device |
| CN101148543A (en) * | 2007-08-31 | 2008-03-26 | 彭术刚 | Device and technique for preparing rubber asphalt by using rubber powder |
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| CN101591473A (en) * | 2009-06-25 | 2009-12-02 | 李滢 | A kind of SBS modified asphalt production device and production method |
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Application publication date: 20110413 Assignee: Shandong Dashan Road&Bridge Co., Ltd. Assignor: Shaanxi chagnda Boyuan Highway Maintenance Technology Co Ltd|Chen Jijiang Contract record no.: 2013370000100 Denomination of invention: System and method for preparing rubber-modified asphalt Granted publication date: 20120627 License type: Exclusive License Record date: 20130502 |
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