In the process of transferring the toxic substance PA that has the high melting point, the centrifugal pumps with the mechanical seals and a hermetically sealed magnetic drive pump were used.

• 在使用机械密封离心泵和无密封磁力泵输送高熔点、有毒介质苯酐的过程中,通过对其生产操作、运行费用、环境污染等方面的对比,确认了使用无密封磁力泵的优点,并进一步将其推广到类似产品的生产中。