Summary of the invention
One object of the present invention is to provide a kind of production system of rubber modified asphalt, can be by dividing echelon heating matrix pitch, and the heat utilization efficiency height is produced 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 is achieved by the following technical solutions.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 by 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; Described swelling can is communicated with feeder by pipeline.
The further improvement and the characteristics of the technical program are:
Be provided with circulating line between the inlet of described first valve and the mixing swelling can, circulating line is provided with second valve.
The heating power of described secondary temperature elevation jar is greater than the heating power of the jar that once heats up.
Described feeder adopts the spiral feeder.
Described growth hold-up vessel is at least two.
Described growth hold-up vessel is communicated with the 5th bitumenpump and the surplus material of construction withdrawing can in turn by pipeline.
Described growth hold-up vessel adopts horizontal growth storage tank.
In the technical program, type of heating to matrix pitch adopts two jars that heat up, can improve matrix pitch and enter 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 enters the mixing swelling can, improve swelling efficient, and can prevent the matrix pitch rapid ageing swelling temperature.
In the technical program, 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 by circulation line, guaranteeing the quality conformance of modifying asphalt, and then satisfy the specification of quality of engineering.
In the technical program, grow hold-up vessel and be communicated with the 5th bitumenpump and the surplus material of construction withdrawing can in turn, can conveniently reclaim the waste material in the construction by 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 by feeding behind the rubber mill then, and 170~200 ℃ of insulated and stirred are mixed after 1~3 hour, promptly.
The further improvement and the characteristics of the technical program are:
In the described 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.
Described rubber powder is one or both in interior tire glue powder, the cover rubber powder.
In the technical program, type of heating to matrix pitch adopts two jars that heat up, can improve matrix pitch and enter 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, 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 enters 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.
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, mixing swelling can is communicated with by pipeline successively, 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 enters the mixing swelling can, improve swelling efficient swelling temperature.
Mix swelling can and be communicated with feeder by 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 in parallel to grow hold-up vessels, respectively by 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 turn, and surplus reusing of expecting is used to construct.
Although below in conjunction with the accompanying drawings 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 by 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 by 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 by 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 by 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 by 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 by 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 as can be known: the quality index of above-mentioned rubber modified asphalt is better than 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.