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
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[0017] Implementation case 1: The specific operation of separating a group of samples.
[0018] 1. Preparation
[0019] Prepare in accordance with 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 ℃ for 6h; 100mL of heptane; Weigh about 1.0g of Esso 90# road petroleum asphalt test sample, boil, filter and concentrate to obtain 10mL of filtrate; 3 weighed 150mL round bottom flasks (asphaltene is not included after treatment 10 mL of filtrate).
[0020] 2. Experimental Procedure
[0021] (1), according to figure 1 Assemble the decompression type asphalt four-component separation device in the order shown, and feed the circulating water at 50±1℃;
[0022] (2), add the prepared 50g aluminum oxide from the feed port at the upper end of the glass adsorption column, shake to ensure that the stationary phase aluminum oxide is com...
Example Embodiment
[0035] Implementation case 2: The specific operation of simultaneously separating three groups of samples.
[0036] 1. Preparation
[0037] As described in Example 1, three groups of the same test articles were prepared, numbered I, II, and III respectively.
[0038] 2. Experimental Procedure
[0039] (1), according to figure 1 Assemble the decompression type asphalt four-component separation device in the order shown, connect two sets of the same device (excluding the vacuum pump) in parallel at the two valve ports of the four-port diverter valve, and use the circulating water inlet and outlet in the adsorption column in the order of bottom in and top out The rubber tubes are connected in series in sequence, and the circulating water at 50°C ± 1°C is introduced;
[0040] (2), Groups I, II, and III were operated independently, and the specific steps were the same as steps (2), (3), (4), (5), (6) in Example 1-2.
[0041] 3. Analysis of Experimental Data
[0042] (1) Use a ...
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