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A poison inhibitor of sulfur-based cement substituting part of asphalt and its application method

A technology that replaces parts and cementing materials. It is applied in the direction of building structure, building insulation materials, building components, etc. It can solve the problems that affect the stability of the road surface, the release of toxic substances is not ideal, and achieve the effect of solving the problem of environmental pollution.

Active Publication Date: 2020-11-27
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the existing sulfur-based cementitious material is used as a basic raw material to replace part of asphalt in the process of laying roads, the inhibitory effect on the release of toxic substances is not ideal, and the problem that the release of toxic substances may be affected while the stability of the road surface may be affected, provides an alternative part A poison inhibitor of asphalt sulfur-based binder and its application method. The formula has stable physical and chemical properties and low cost, and can effectively inhibit H in the process of mixing sulfur-based binder and base asphalt 2 The release of toxic gases such as S and the volatilization of toxic substances such as benzene, toluene, naphthalene, and indene meet the requirements of safe production and environmental protection

Method used

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  • A poison inhibitor of sulfur-based cement substituting part of asphalt and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1: Prepare raw materials by weight as follows: tert-butyl peroxybenzoate 30.6 g, concentrated sulfuric acid 1.2 g, butyl butyrate 21 g, phenylacrolein 7.2 g.

[0022] Step 2: Simply mix the above-mentioned tert-butyl peroxybenzoate, concentrated sulfuric acid, butyl butyrate and phenylacrolein in a mixer under gentle stirring to prepare the liquid poison inhibitor of the present invention.

[0023] Step 3: Add 30g of treated low-quality recycled sulfur to 70g of Donghai brand No. 90 base asphalt at 160°C, add 3 g of liquid poison inhibitor within 1 minute while stirring, and continue stirring for 20 minutes.

[0024] Headspace-mass spectrometry analysis is carried out to above-mentioned embodiment 1 mixing process, wherein main toxic substance naphthalene, H 2 The released amounts of S, benzene, toluene and indene were 532.71 μg / g, 121.51 μg / g, 239.27 μg / g, 351.34 μg / g and 150.92 μg / g, respectively. For comparison results, see figure 1 .

Embodiment 2

[0026] Step 1: Prepare raw materials according to the following weights: 30 g of tert-butyl peroxybenzoate, 0.6 g of concentrated sulfuric acid, 11.4 g of butyl butyrate, and 18 g of phenylacrolein.

[0027] Step 2: Simply mix the above-mentioned tert-butyl peroxybenzoate, concentrated sulfuric acid, butyl butyrate and phenylacrolein in a mixer under gentle stirring to prepare the liquid poison inhibitor of the present invention.

[0028] Step 3: Add 30g of treated low-quality recovered sulfur to 70g of Donghai No. 90 base asphalt at 150°C, add 1.5g of liquid poison inhibitor within 1 minute while stirring, and continue stirring for 20 minutes.

[0029] Headspace-mass spectrometry analysis is carried out to above-mentioned embodiment 2 mixing process, wherein main toxic substance naphthalene, H 2 The released amounts of S, benzene, toluene and indene were 759.23 μg / g, 140.75 μg / g, 309.5 μg / g, 399.79 μg / g and 179.25 μg / g, respectively. For comparison results, see figure 1 .

Embodiment 3

[0031] Step 1: Prepare raw materials according to the following weights: 42 g of tert-butyl peroxybenzoate, 3 g of concentrated sulfuric acid, 9 g of butyl butyrate, and 6 g of phenylacrolein.

[0032] Step 2: Simply mix the above-mentioned tert-butyl peroxybenzoate, concentrated sulfuric acid, butyl butyrate and phenylacrolein in a mixer under gentle stirring to prepare the liquid poison inhibitor of the present invention.

[0033] Step 3: Add 30g of treated low-quality recovered sulfur to 70g of Donghai No. 90 base asphalt at 140°C, add 0.03 g of liquid poison inhibitor within 1 minute while stirring, and continue stirring for 20 minutes.

[0034] Headspace-mass spectrometry analysis is carried out to above-mentioned embodiment 3 mixing process, wherein main poisonous substance naphthalene, H 2 The release amounts of S, benzene, toluene and indene were 790.11 μg / g, 150.83 μg / g, 389.25 μg / g, 370.53 μg / g and 184.21 μg / g, respectively. For comparison results, see figure 1 .

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Abstract

The invention discloses a toxicant inhibitor of a sulfur-based binder replacing part of asphalt and an application method of the toxicant inhibitor, which belong to the field of toxicant inhibitors, and can solve the problems that an existing sulfur-based cement has an unsatisfactory inhibitory effect on the release of toxic substances when used as a basic raw material to replace part of asphalt during road paving and may affect the stability of a road surface when used for inhibiting the release of the toxic substances. The toxicant inhibitor is prepared from organic peroxides, a sulfonatingagent, ester compounds and aldehyde compounds, the adding amount of the toxicant inhibitor is 0.1% to 10% of low-quality recovery sulfur, and the use temperature is from 140 DEG C to 160 DEG C. The toxicant inhibitor can effectively inhibit the release of toxic gases such as H2S and the volatilization of the toxic substances such as benzene, toluene, naphthalene and indene during the process of mixing a sulfur-based binder and matrix asphalt, so as to meet the requirements of safe production and environmental protection.

Description

technical field [0001] The invention relates to a poison inhibitor and its use method, in particular to a poison inhibitor of sulfur-based cement that replaces part of asphalt and its use method. Background technique [0002] Removal of H by Wet Oxidation Technology in Coal Chemical Industry 2 The low-quality recycled sulfur produced by S is a difficult-to-use and highly polluting industrial solid waste. The main component of low-quality recycled sulfur is sulfur. Combined with the process of treating asphalt with sulfur as a raw material, low-quality recycled sulfur is used as a basic raw material to replace part of asphalt for road paving, which can enhance the high-temperature rutting resistance of the mixture and help improve The low-temperature performance of the mixture improves the water stability of the mixture, and at the same time reduces the mixing temperature and saves energy consumption. [0003] The main component of low-quality recycled sulfur, sulfur and as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K13/02C08K3/30C08K5/14C08K5/101C08K5/07
CPCC08K3/30C08K5/07C08K5/101C08K5/14C08K13/02C08K2003/309C08L95/00
Inventor 赵永乐李国强张舒婷李涛李源张静王影张永发
Owner TAIYUAN UNIV OF TECH