真空脱气仪脱气效果的分析与评价

Analysis and Evaluation on Degassing Effect of Vacuum Degassing Apparatus

目的:通过测定纯水残氧量、气体分压和air量,分析与评价真空脱气仪的脱气效果,并与抽滤、煮沸、超声等方法进行比较,选出适宜的溶出介质脱气方法,指导用于日常检验工作中。方法:采用单路水质在线监控仪和Carbo QC Anton Pear仪分别测定纯水残氧量,气体分压和air量。对真空脱气仪在负压、脱气时间等方面进行脱气效果考察,并与抽滤、煮沸、超声等脱气效果进行比较。结果:真空脱气仪在负压0.06 MPa、介质温度41℃、脱气时间为30 min情况下,脱气效果明显。抽滤、煮沸脱气效果与真空脱气仪脱气效果相当。超声脱气效果不明显。结论:真空脱气仪使用快捷方便、高效,脱气效果明显,适宜用于溶出介质的脱气处理。

To analyze and evaluate the degassing effect of vacuum degassing apparatus through the determination of oxygen content in pure water, gas pressure and air volume, and compare with suction filtration, boiling and ultrasonic methods to choose the appropriate degassing method for dissolution medium and guide the daily inspection work. Methods： The water residual oxygen, gas pressure and air volume were determined using a single water quality online monitoring instrument and a Carbo QC Anton Pear instrument. The degassing effect of the vacuum degassing apparatus was detected under the conditions of negative pressure and certain degassing time. The degassing effedt was also compared with that of suction filter, boiling and ultrasonic methods. Results： Under the conditions of 0.06 MPa negative pressure, 41℃medium temperature and 30 min degassing time, the degassing effect of the vacuum degassing apparatus was obvious. The dcgassing effect of suction filter and boiling methods was similar to that of the vacuum degassing apparatus, while that of ultrasonic method wasnt obvious. Conclusion： The use of vacuum degassing apparatus is simple and efficient with obvious degassing effect, which is suitable for the degassing process of dissolution medium.