90A road petroleum asphalt and preparation method thereof

A technology for road petroleum asphalt and distillate oil, which is used in the processing of tar asphalt/petroleum asphalt/natural asphalt, processing tar asphalt/petroleum asphalt/natural asphalt by distillation, and chemically processing tar asphalt/petroleum asphalt/natural asphalt, etc. , can solve the problems of asphalt flash point, anti-aging performance without substantial help, unable to meet low temperature performance at the same time, poor anti-aging ability of styrene-butadiene rubber, etc., to achieve the effect of improving self-healing ability, obvious flash point and excellent low temperature performance

Pending Publication Date: 2021-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only increases the low-temperature elongation of asphalt, and does not substantially help asphalt flash point, anti-aging performance, etc.
Moreover, the added styrene-butadiene rubber has poor anti-aging ability and is easy to decompose under heating conditions, which makes the elongation of the prepa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0058] Example 1

[0059] (1) 15 parts of soluble polybutyl rubber (SSBR) were first pulverized to a particle diameter of 0.5 cm, and then the pulverized SSBR was added 100 parts of a defraud-resistant alfici-fraction oil (an aromatic hydrocarbon content of 45 wt%, The boiling range was 310 ° C to 450 ° C), cut at 130 ° C for 60 min, the shear speed was 4000 r / min; the shear was completed, and the reaction kettle was pressed. 2 To purge 20 min, 2 parts of methacrylic acid, 2 maleimide, add 0.05 parts of sodium sulfate, in N 2 The reaction was stirred at a atmosphere for 4 h, and the reaction pressure was maintained at 0.8 MPa, and the stirring speed was 800 r / min; after the reaction was completed, 0.8 parts of sorbitol was added to the reactor, and the development stage is still N. 2 Maintain 0.8 MPa pressure, the stirring speed is 400 r / min, the development temperature is 115 ° C, the development time is 120 min; after the end of the development, it is placed in a 100 ° C o...

Example Embodiment

[0064] Example 2

[0065] (1) 15 parts of soluble polybutyl rubber (SSBR) were first pulverized to a particle diameter of 0.5 cm, and then the pulverized SSBR was added 100 parts of a defraud-resistant alfici-fraction oil (an aromatic hydrocarbon content of 45 wt%, The boiling range was 310 ° C to 450 ° C), cut at 120 ° C for 80 min, the shear speed was 4000 r / min; after shearing, poured into the reactor, the reaction kettle pre-N 2 Blow 20 min, 2 parts of methacrylic acid, 2 rumoric acid with 0.05 parts of potassium sulfate, in N 2 The reaction was stirred at a atmosphere for 3 h, and the reaction pressure was maintained at 1 MPa. After the stirring speed was 800 r / min; after the reaction was completed, 0.8 parts of ravanuferol was added to the reactor, and the development stage was used. 2 Maintain 0.8 MPa pressure, the stirring speed is 500 r / min, the development temperature is 115 ° C, the development time is 120 min; after the development of 100 ° C, it is held in an ov...

Example Embodiment

[0067] Example 3

[0068] (1) Preparation conditions of the low temperature flexibility were the same as in Example 1.

[0069] (2) 100 parts of the river constant residue (nature shown in Table 1) was added to a high pressure reaction kettle of 110 ° C, and 0.2 parts of phosphoric acid content (with H 3 PO 4 The meter is 135% polyphosphoric acid to slowly add the reaction kettle (completed in 3 minutes), at a stirring speed of 600 r / min, the speed of the speed of 2 ° C / min is warmed to 140 ° C, and after the temperature is completed at N 2 The reaction was carried out under the atmosphere, and the pressure in the reactor was maintained at 0.5 MPa, the reaction time was 4 h; after the reaction was completed in the oven, the holding temperature was 100 ° C, the holding time was 8 h.

[0070] (3) 0.2 parts of phosphoric acid content (with h 3 PO 4 In the tower of the tower river in the tower of the reaction after 110% of polyphosphoric acid, the mixture was mixed, and the mixtur...

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Abstract

The invention discloses 90A road petroleum asphalt and a preparation method thereof. The 90A road asphalt which can meet standard requirements is prepared by synergistically matching difficult-to-treat inferior common slag as a raw material with polyphosphoric acid, an initiator, a component regulator and a low-temperature ductility enhancer. The asphalt has excellent low-temperature performance, especially aging resistance, so that the 90A asphalt still has good low-temperature extensibility after being aged.

Description

technical field [0001] The invention relates to a road asphalt and a preparation method thereof, in particular to a 90A road petroleum asphalt and a preparation method thereof. Background technique [0002] As crude oil becomes heavier, the yield of vacuum residue oil increases gradually, and the content of heavy metals and sulfur in the residue oil increases, making it more difficult to lighten the residue oil. However, it is difficult to produce asphalt by using inferior residue oil. The processing scheme is relatively simple, and the economic benefit is high. Asphalt production in China mainly adopts distillation and blending process, but with the deterioration of residual oil and the injection of light oil in the mining process, the relative content of saturated components and asphaltenes in residual oil increases, while the relative content of aromatic components and colloids decreases, and the relative content of asphalt The association degree of the substance increas...

Claims

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Application Information

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IPC IPC(8): C10C3/00C10C3/02C10C3/06
CPCC10C3/00C10C3/02C10C3/06
Inventor 刘成刘树华傅丽徐青柏张建峰吴晓颖郭小圣
Owner CHINA PETROLEUM & CHEM CORP
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