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Pitch water emulsion and preparation method thereof

A technology for asphalt emulsion and asphalt raw materials, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of insufficient stability and unsuitability of asphalt emulsion, and achieves low production cost, small median particle size, and high stability. high effect

Active Publication Date: 2010-04-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method disclosed in this patent is suitable for the production of emulsified fuel or feedstock for gasification processes, but is not suitable for the production of emulsified asphalt for road use, and the stability of the asphalt emulsion prepared is not high enough

Method used

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  • Pitch water emulsion and preparation method thereof

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[0023] According to the preparation method of asphalt emulsion provided by the present invention, comprises the following steps:

[0024] (1) Raise the temperature of 45-70% by weight of asphalt raw material to 80-150°C, then add 0.01-2% by weight, preferably 0.05-1% by weight of additives, stir evenly, and heat it to 100-190°C; The additive is selected from one or more of organic acids, esters, alkali metal salts of organic acids, alkali metal salts of esters, preferably formic acid, acetic acid, oxalic acid, tartaric acid, citric acid, fatty acid C10-22, alkyl One or more of sulfuric acid ester C10-22, aromatic acid, cycloalkane carboxylic acid, sulfonic acid, and alkali metal salts of the above-mentioned various acids and esters, more preferably oxalic acid, benzoic acid, fatty acid C10-22, Naphthalene acid, petroleum sulfonic acid, alkyl phosphate, alkyl sulfate C10-22, and one or more of the alkali metal salts of the above-mentioned acids and esters;

[0025] (2) Mixing ...

Embodiment 1

[0033] Heat 650g of asphalt raw material to a temperature of 110°C, add 0.2g of ethyl acrylate (produced by Beijing Dongfang Chemical Factory) under stirring, and then heat to 120°C. Mix 3g of cetyltrimethylammonium chloride (trade name 1631, produced by Shanghai Synthetic Detergent No. DS-6000, produced by Guangzhou Dongxing Fine Chemical Co., Ltd.), 0.5g polyacrylamide (Shanghai Shengzhong Fine Chemical Co., Ltd.) and 344.3g water were mixed, stirred to dissolve each component, and an emulsifier aqueous solution was obtained, and then heated to 70 ℃. The prepared asphalt containing ethyl acrylate and emulsifier aqueous solution were fully mixed with a colloid mill (type W4, produced by Wenzhou Colloid Mill Factory) to obtain an asphalt emulsion. The emulsion product has no skinning, and its properties are shown in Table 2.

[0034] The storage stability of this product meets the technical requirements of emulsified asphalt for roads. After being placed for one month, there ...

Embodiment 2

[0042] 600g of asphalt raw material was heated to a temperature of 100°C, mixed with 0.95g of sodium naphthenate (product of Shanghai Changfeng Chemical Factory) under stirring, and then heated to 140°C. 2g dioctadecyltrimethylammonium chloride (trade name D1831, produced by Shanghai Synthetic Detergent No. ) mixed with 1g Potassium Chloride (produced by Beijing Chemical Factory), 1g polyvinyl alcohol (trade name 1788, produced by Beijing Organic Chemical Factory), then add 393.1g water, stir to make each component dissolve, obtain emulsifier aqueous solution, and heat to a temperature of 80°C. The prepared asphalt containing sodium naphthenate and emulsifier aqueous solution were fully mixed with a homogenizer (model M50, produced by Shanghai Qidong Mixer Factory) to obtain an asphalt emulsion. This emulsion product has no skinning, and its properties are shown in Table 3 .

[0043] The product has been placed for one month without sedimentation and delamination. The storag...

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Abstract

The invention relates to pitch emulsion which comprises 45-70wt% of pitch raw material, 0.01-2wt% of additive, 0.05-5wt% of emulsifying agent, 0.02-3wt% of auxiliary agent and 25-45wt% of water, wherein the additive is selected from one or several of organic acid, ester, alkali metal salt of the organic acid and alkali metal salt of the ester. The preparation method comprises the following steps: when preparing the pitch emulsion, adding the additive into the pitch raw material at the temperature of 80-150 DEG C firstly, afterwards heating the temperature at 100-190 DEG C and then mixing with a solution containing the emulsifying agent, the auxiliary agent and the water at the temperature of 40-95 DEG C. The pitch emulsion has high storage stability and small particle diameter of particles.

Description

technical field [0001] The invention relates to an asphalt emulsion and a preparation method thereof, belonging to the technical field of asphalt processing. Background technique [0002] Asphalt emulsion has a wide range of uses and can be used in various fields such as paving, construction, anti-corrosion and waterproofing. However, emulsified asphalt is a thermodynamically unstable coarse dispersion system. It is produced by on-site mixing. [0003] USP 7,087,665 discloses a method for preparing a pretreated rubber-modified asphalt water emulsion, comprising combining 5-55% by weight of rubber particles with 45-90% by weight of asphalt to liquefy it under certain conditions, and then using ten Dialkylbenzenesulfonic acid is pretreated, and then mixed with water, acid and polyamine-based compounds to obtain an aqueous emulsion. [0004] USP6,001,886 discloses a method for preparing an asphalt emulsion by mixing deoiled asphalt obtained by straight-run asphalt or propane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/03C08K13/02C08K5/09C08K5/098C08K5/10C08K5/521C08K5/42
Inventor 王红王子军王翠红
Owner CHINA PETROLEUM & CHEM CORP
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