Adiabatic compression heating of selected organic solvents under high pressure processing

作者：Sun, Wei; Li, Jianping; Ramaswamy, Hosahalli S.; Yu, Yong; Wang, Chunfang; Zhu, Songming^*

来源：High Pressure Research, 2018, 38(3): 325-336.

DOI：10.1080/08957959.2018.1488974

• High pressure processing
• organic solvent
• compression heating
• adiabatic
• temperature

Six organic solvents (methanol, ethanol, acetone, ethyl acetate, n-hexane and petroleum ether) were evaluated for their adiabatic compression heating (ACH) characteristics. A specially designed data acquisition system was used to gather ACH data under different high pressure treatment conditions: pressure, 0.1-400MPa and initial temperature, 5 degrees C and 25 degrees C. Petroleum ether had the highest temperature increase (44 degrees C) followed by n-hexane, ethyl acetate, acetone, methanol and ethanol (33 degrees C) under the experiment conditions. The ACH values for the solvents exhibited a decreasing trend with an increase in pressure and only slightly affected by the initial temperature. An empirical equation was obtained for predicting the ACH of the solvents as a function of pressure at 5 degrees C and 25 degrees C which gave a good fit (Radj2 > 0.99) with experimental data. Thermal effect due to ACH of solvents during the high pressure processing is crucial but neglected most often when studying high pressure extraction.

• 出版日期2018
• 单位浙江大学