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A kind of processing method of petroleum asphalt

A technology of petroleum asphalt and processing method, which is applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, petroleum industry, and heating processing of tar asphalt/petroleum asphalt/natural asphalt, etc., which can solve the problems of insufficient compatibility and achieve The effect of excellent compatibility

Active Publication Date: 2021-08-10
沈阳道庆沥青混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high content of SBS in high-viscosity modified asphalt, even the aromatic-rich base asphalt has the problem of insufficient compatibility.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of monodisperse styrene-maleic anhydride copolymer:

[0033] In parts by weight, successively get 10 parts of maleic anhydride, 10 parts of styrene, 1 part of initiator, and 100 parts of ethyl butyrate, mix and pour in the reactor, and feed inert gas into the reactor, inert Under the condition of gas protection, at a temperature of 80°C, heat and reflux for 4 hours, then centrifuge at a rate of 50 rad / min for 20 minutes, remove the supernatant, and collect the lower precipitate to obtain styrene-malay Anhydride copolymer;

[0034] Described initiator is azobisisobutyronitrile;

[0035] Pretreatment of sepiolite:

[0036] After mixing sepiolite and water at a mass ratio of 1:5, ultrasonically disperse at an ultrasonic frequency of 50kHz for 10 minutes to obtain a dispersion, and then add an emulsifier with 1% of the mass of sepiolite and seafoam to the dispersion. Spherical nano-transition metal oxides with a mass of 5% were stirred and reacted for 3 hours...

Embodiment 2

[0045] Preparation of monodisperse styrene-maleic anhydride copolymer:

[0046] In parts by weight, successively get 15 parts of maleic anhydride, 15 parts of styrene, 2 parts of initiator, 120 parts of ethyl butyrate, mix and pour in the reactor, and feed inert gas into the reactor, inert Under the condition of gas protection, at a temperature of 82 ° C, after heating and reflux for 5 hours, at a rate of 55 rad / min, after centrifugation for 30 minutes, the supernatant was removed, and the lower precipitate was collected to obtain styrene-malay Anhydride copolymer;

[0047] Described initiator is azobisisoheptanonitrile;

[0048] Pretreatment of sepiolite:

[0049] After mixing sepiolite and water at a mass ratio of 1:8, ultrasonically disperse at an ultrasonic frequency of 70kHz for 20 minutes to obtain a dispersion, and then add an emulsifier with 3% of the mass of sepiolite and seafoam to the dispersion. Spherical nano-transition metal oxides with 10% stone mass were stirr...

Embodiment 3

[0058] Preparation of monodisperse styrene-maleic anhydride copolymer:

[0059] In parts by weight, successively get 20 parts of maleic anhydride, 20 parts of styrene, 3 parts of initiator, 150 parts of ethyl butyrate, mix and pour in the reactor, and pass into inert gas in the reactor, inert Under the condition of gas protection, at a temperature of 85 ° C, after heating and reflux for 8 hours, at a rate of 60 rad / min, centrifuge for 40 minutes, remove the supernatant, and collect the lower precipitate to obtain styrene-malay Anhydride copolymer;

[0060] The initiator is dimethyl azobisisobutyrate;

[0061] Pretreatment of sepiolite:

[0062] After mixing sepiolite and water at a mass ratio of 1:10, ultrasonically disperse at an ultrasonic frequency of 80kHz for 30 minutes to obtain a dispersion, and then add an emulsifier with 5% of the mass of sepiolite and seafoam to the dispersion. Spherical nano-transition metal oxides with 15% stone mass, stirred and reacted for 5 h...

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PUM

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Abstract

The invention belongs to the technical field of petrochemical industry, and in particular relates to a processing method of petroleum asphalt. In the processing process of the present invention, the sepiolite is pretreated first, and after the sepiolite and water are dispersed, an emulsifier and a spherical nano-transition metal oxide are added, and after stirring and reacting, filtration and drying are performed to obtain pretreated seafoam After mixing petroleum pitch, sepiolite and styrene-maleic anhydride copolymer, heat ball mill for 56-72h to obtain ball mill; then add isocyanate to the ball mill, heat and stir to react, cool, discharge, That is, the processing of petroleum asphalt is completed. The invention can introduce a continuous phase with excellent performance into the petroleum asphalt, and at the same time, the compatibility between the petroleum asphalt and the continuous phase is excellent.

Description

technical field [0001] The invention belongs to the field of petrochemical technology. More specifically, it relates to a processing method of petroleum asphalt. Background technique [0002] With the rapid development of highway construction and the continuous strengthening of environmental load management, drainage asphalt pavement, as an important part of sponge city, has received more attention. Among them, the demand for modified petroleum asphalt-high-viscosity modified asphalt with better performance is prominent. [0003] High-viscosity modified asphalt is generally made by adding a high content of styrenic thermoplastic elastomer (SBS) modifier. Increasing the SBS content can make the modified asphalt undergo phase transition, and SBS forms a continuous phase, so that the modified asphalt can show more performance as a polymer, and significantly improve the high-temperature performance and low-temperature performance of asphalt. However, the compatibility between...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C3/00C10C3/02C10C3/14
CPCC10C3/002C10C3/023C10C3/026C10C3/14
Inventor 赵芳
Owner 沈阳道庆沥青混凝土有限公司
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