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Pressure-reducing type asphalt four-component separating device

The technology of a separation device and a decompression device is applied in separation methods, liquid separation of solid adsorbents, preparation of samples for testing, etc., and can solve the problems of difficult to control the air pressure of the adsorption column, inaccurate experimental data, and different liquid flow rates, etc. To achieve the effect of reducing experimental human error, ensuring personal safety, and stable experimental data

Inactive Publication Date: 2012-07-04
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] According to the provisions of asphalt chemical component test (four-component method) (T0618-1993) in the test regulations for asphalt and asphalt mixture in highway engineering (JTJ052-2000), the saturated components, aromatic components and colloids were separated by column chromatography. When the asphalt is too viscous to be separated by the weight of the liquid, it is traditionally used to pressurize the two rubber balls to achieve the purpose of separation. After improvement, an air compressor is used to provide the pressure. However, this pressurization method requires the tester to operate the whole process Pressurization, large experimental workload, large human error, and difficult to control the air pressure in the adsorption column during the separation process, resulting in different liquid flow rates in the adsorption column, large randomness of the separated four-component samples, and inaccurate experimental data

Method used

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  • Pressure-reducing type asphalt four-component separating device
  • Pressure-reducing type asphalt four-component separating device
  • Pressure-reducing type asphalt four-component separating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0017] Implementation case 1: The specific operation of separating a group of samples.

[0018] 1. Preparation

[0019] Prepare according to the provisions of T0618-1993 asphalt chemical component test (four-component method) in JTJ052-2000 highway engineering asphalt and asphalt mixture test regulations: activate 50g of aluminum oxide at 500°C for 6h; Heptane 100mL; Weigh about 1.0g of Esso 90# road petroleum asphalt test sample, after boiling, filtering and concentrating to obtain 10mL filtrate; 3 weighed 150mL round bottom flasks (asphaltene is not included in the treated 10mL of filtrate).

[0020] 2. Experimental procedure

[0021] (1), according to figure 1 Assemble the decompression-type asphalt four-component separation device in the sequence shown, and feed circulating water at 50±1°C;

[0022] (2), add 50g of Al2O3 prepared from the feed port at the upper end of the glass adsorption column, oscillate to ensure that Al2O3 in the stationary phase is tight, add 30mL...

Embodiment example 2

[0035] Implementation case 2: The specific operation of separating three groups of samples at the same time.

[0036] 1. Preparation

[0037] According to the description in Example 1, prepare three groups of the same test articles and number them respectively as Groups I, II and III.

[0038] 2. Experimental procedure

[0039] (1), according to figure 1 Assemble the decompression-type asphalt four-component separation device in the sequence shown, and connect two sets of the same device (excluding the vacuum pump) in parallel at the two valve ports of the four-port diverter valve. The rubber tubes are connected in series in sequence, and the circulating water at 50°C±1°C is passed through;

[0040] (2), groups I, II, and III were operated independently, and the specific steps were the same as steps (2), (3), (4), (5), and (6) in the implementation case 1-2.

[0041] 3. Analysis of Experimental Data

[0042] (1) Use a rotary evaporator to remove the eluents in No. 1, No. ...

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Abstract

The invention discloses a pressure-reducing type asphalt four-component separating device, which consists of a glass adsorbing column, a collecting component part and a pressure-reducing control part, and a plurality of groups of test samples are separated at the same time by a four-way flow divider valve by means of reducing pressure in a vacuum-pumping way, applying force by the atmosphere and controlling the flowing speed by a vacuum meter. Impression and labor consumption of the existing pressurizing type asphalt separating four-component test technology are overcome by the pressure-reducing type asphalt four-component separating device, the pressure in a system is controlled by the vacuum meter for providing a stable acting force, and a plurality of groups of tests are carried out at the same time, so that the separating precision and working efficiency are improved. In addition, the work intensity of experiment staff is reduced, and semi automation of the asphalt four-component separation is realized.

Description

technical field [0001] The invention relates to an asphalt separation device, which is an efficient and accurate semi-automatic experimental device for separating four components of asphalt, and can quickly and accurately separate asphaltene, saturated components, aromatic components and colloids of road petroleum asphalt. Background technique [0002] According to the provisions of asphalt chemical component test (four-component method) (T0618-1993) in the test regulations for asphalt and asphalt mixture in highway engineering (JTJ052-2000), the saturated components, aromatic components and colloids were separated by column chromatography. When the bitumen is too viscous, it is difficult to separate it by the weight of the liquid. Traditionally, two rubber balls are used to pressurize to achieve the purpose of separation. After improvement, an air compressor is used to provide pressure. However, this pressurization method requires the tester to operate the whole process Pre...

Claims

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Application Information

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IPC IPC(8): B01D15/10G01N1/34
Inventor 高莉宁赵澜陈华鑫贺孟霜陈改霞张晓峰
Owner CHANGAN UNIV
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