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Rapid analysis and detection system and method for volatile organic compounds in asphalt flue gas

A technology for volatile organic compounds and asphalt fume, which is applied in the field of analysis and detection, can solve the problems that the real molecular weight distribution of asphalt fume cannot be revealed, and achieve the effect of fast analysis speed and high throughput

Pending Publication Date: 2021-11-23
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The most important thing is that the molecular weight of the compounds detected by mass spectrometry currently used for asphalt fume detection is limited to 400Da, and the results of gas chromatography-mass spectrometry may not reveal the true molecular weight distribution of asphalt fume

Method used

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  • Rapid analysis and detection system and method for volatile organic compounds in asphalt flue gas
  • Rapid analysis and detection system and method for volatile organic compounds in asphalt flue gas
  • Rapid analysis and detection system and method for volatile organic compounds in asphalt flue gas

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Experimental program
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Effect test

Embodiment 1

[0034] The method for rapid analysis and detection of volatile components in base asphalt comprises the following steps:

[0035] Step 1, refer to figure 1 , to build a direct and rapid analysis system for volatile organic compounds in asphalt flue gas

[0036] Connect the 1.5cm long carbon fiber with the solvent pipeline through the metal sleeve, clamp the high-voltage power supply between the metal sleeve and the front end of the sample inlet of the mass spectrometer, place a heating plate under the carbon fiber, and electrically connect the temperature regulator to the heating plate. The temperature regulator adjusts the temperature of the heating plate, which in turn adjusts the temperature generated by the bitumen fumes on the heating plate. The distance b between the carbon fiber and the inlet of the mass spectrometer is 1 cm, the distance d between the asphalt sample to be tested and the inlet of the mass spectrometer is 1 cm, and the distance c between the asphalt sam...

Embodiment 2

[0040] The rapid analysis and detection method for the volatile components of asphalt saturation content comprises the following steps:

[0041] Step 1, build a direct and rapid analysis system for volatile organic compounds in asphalt flue gas

[0042]Connect the 1.5cm long carbon fiber with the solvent pipeline through the metal sleeve, clamp the high-voltage power supply between the metal sleeve and the front end of the sample inlet of the mass spectrometer, place a heating plate under the carbon fiber, and electrically connect the temperature regulator to the heating plate. The temperature regulator adjusts the temperature of the heating plate, which in turn adjusts the temperature generated by the bitumen fumes on the heating plate. The distance b between the carbon fiber and the inlet of the mass spectrometer is 1 cm, the distance d between the asphalt sample to be tested and the inlet of the mass spectrometer is 1 cm, and the distance c between the asphalt sample to be ...

Embodiment 3

[0046] The method for rapid analysis and detection of volatile components in asphalt aromatics comprises the following steps:

[0047] Step 1, build a direct and rapid analysis system for volatile organic compounds in asphalt flue gas

[0048] Connect the 1.5cm long carbon fiber with the solvent pipeline through the metal sleeve, clamp the high-voltage power supply between the metal sleeve and the front end of the sample inlet of the mass spectrometer, place a heating plate under the carbon fiber, and electrically connect the temperature regulator to the heating plate. The temperature regulator adjusts the temperature of the heating plate, which in turn adjusts the temperature generated by the bitumen fumes on the heating plate. The distance b between the carbon fiber and the inlet of the mass spectrometer is 1 cm, the distance d between the asphalt sample to be tested and the inlet of the mass spectrometer is 1 cm, and the distance c between the asphalt sample to be tested an...

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Abstract

The invention belongs to the technical field of analysis and detection, and discloses a rapid analysis and detection system and method for volatile organic compounds in asphalt flue gas. The analysis and detection system comprises a mass spectrometer, a sample inlet of the mass spectrometer is connected with a metal sleeve through a high-voltage power line, and the metal sleeve is connected with a solvent pipeline. Carbon fibers are arranged in the metal sleeve, and an auxiliary solvent is arranged in the solvent pipeline. A heating device is arranged below the carbon fibers, an asphalt sample to be detected is placed in the heating device, and the heating device is used for heating the asphalt sample to be detected. The analysis and detection system is simple in structure, easy to construct and low in cost. The method has the advantages of high throughput, rapidness and high sensitivity. The molecular weight range of the detected compound is 10-1000Da, the real-time direct analysis of volatile components in asphalt at different temperatures can be realized, and important reference can be provided for the implementation temperature during asphalt pavement construction.

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular to a rapid analysis and detection system and method for volatile organic compounds in asphalt fumes. Background technique [0002] Due to its excellent rheological properties, asphalt has been used as an important road engineering material for highway construction in my country. The chemical composition of asphalt is extremely complex, and its composition usually includes alkanes, polycyclic aromatic hydrocarbons, metal porphyrins and heterocyclic compounds. In pavement engineering, asphalt material is used as a binder to mix with different engineering materials to form the final asphalt mixture. The production of asphalt mixture can adopt hot-mix asphalt or warm-mix asphalt technology. The two mixing processes are carried out at different production temperatures. The mixing and compaction temperature in the hot-mixing process is generally above 140 ° C. Due to the a...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/62
Inventor 王珊珊王康赵骏腾廖晨鑫殷嘉涛陈晓凯
Owner CHANGAN UNIV
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