Semi-solid emulsified asphalt

A technology of emulsified asphalt and oxidized asphalt, which is applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, and the petroleum industry. It can solve the problems of high-concentration emulsified asphalt, inconvenient storage and transportation, and high cost. Soil erosion, increase strength, avoid corrosion effect

Active Publication Date: 2005-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About half of the emulsified asphalt products mentioned in the above patents are water, which makes storage and transportation extremely inconvenient. Generally, it needs to be stored in iron drums or storage tanks, and transported by tank trucks or iron drums. The cost is very high, and in the production of emulsified asphalt Most of the time, hydrochloric acid is used to adjust the pH of the emulsifier aqueous solution so that the pH value is 2 to 3, and the acid in it is easy to cause corrosion to iron drums, storage tanks, tank trucks and other storage and transportation equipment
[0003] So far, there have been no reports of high-concentration emulsified asphalt that can be diluted arbitrarily and does not break the emulsion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Get 770 parts of Jinxi No. 90 oxidized asphalt (penetration is 93 1 / 10mm) (by weight, the same below), 8 parts of cationic surfactant "octadecyltrimethylammonium chloride", nonionic surface Active agent "polyoxyethylene (20) sorbitan monooleate (T-80)" 4 parts, stabilizer "calcium chloride" 2 parts, water 216 parts. Heat the above-mentioned asphalt to 150°C, then dissolve the above-mentioned surfactant in water at 40°C to form an aqueous solution, and then pass the asphalt and the aqueous solution together through an emulsification device to obtain an emulsified asphalt product. The specific composition is shown in Table 1 , see Table 2 for product properties.

Embodiment 2

[0032] Take 810 parts of Panjin No. 130 straight run asphalt (penetration is 138 1 / 10mm), 15 parts of cationic surfactant "tallow propylene diamine", nonionic surfactant "nonylphenol polyoxyethylene (10) Ether" 4 parts, stabilizer "calcium chloride" 2 parts, additive "hydroxyethyl cellulose" 2 parts, water 167 parts. The emulsified asphalt product was prepared according to the method of Example 1. The specific composition is shown in Table 1, and the product properties are shown in Table 2.

Embodiment 3

[0034] Get 890 parts of Daqing propane deoiled asphalt (penetration is 70 1 / 10mm), 16 parts of cationic surfactant "pork fat-based tripropylene tetramine", 3 parts of "octadecyltrimethylammonium bromide", 4 parts of nonionic surfactant "alkylphenol polyoxyethylene ether (OP-12)" (manufactured by Dalian Oleochemical Factory), 1 part of additive "carboxymethyl starch", 86 parts of water. The emulsified asphalt product was prepared according to the method of Example 1. The specific composition is shown in Table 1, and the product properties are shown in Table 2.

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PUM

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Abstract

The present invention relates to emulsified asphalt, and is especially one kind of semi-solid emulsified asphalt with high asphalt concentration and in jelly state. The semi-solid emulsified asphalt consists of asphalt, surfactant, water, etc. The present invention features that the re-compounding of cationic surfactant and non-ionic surfactant increases the micelle concentration of emulsifier in the oil-water interface, and raises the emulsifying capacity of surfactant and the stability of emulsion. The product has high stability, high asphalt concentration and semi-solid state, and may be packed in plastic bag for easy storage and transportation in low cost. Before use, it may be diluted at will without needing demulcification. The product of the present invention may be used widely.

Description

technical field [0001] The invention relates to emulsified asphalt, in particular to emulsified asphalt with high asphalt concentration and jelly-like semi-solid emulsified asphalt. Background technique [0002] Emulsified asphalt is one of the commonly used materials in road paving, repair and maintenance. However, the asphalt concentration in the past emulsified asphalt products is relatively low, and the asphalt content is generally 50wt% to 60wt%. For example, CN1060665A proposes a kind of emulsified asphalt, and this emulsified asphalt is prepared by adopting a compound system of anionic and cationic surfactants. The asphalt content in the emulsified asphalt product is 60wt%. CN1034563A has proposed a kind of asphalt emulsion mainly compounding petroleum or fatty acid and other substances as emulsifiers with alkaline papermaking waste liquid. The content of asphalt in the asphalt emulsion is 30-70wt%, but according to the examples, the highest content of asphalt in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/00
Inventor 陈保莲刘树华李志军张静
Owner CHINA PETROLEUM & CHEM CORP
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