This paper introduced a new type and special structured vacuum pump unit suitable for dry type reduced-pressuredistillation.
本文介绍适用于干式减压蒸馏的特殊结构真空抽气设备。
2
The process flow and production practice of air-distillation and reduced-pressuredistillation for tar in Jigang coking plant are introduced.
介绍了济钢焦化厂焦油常、减压蒸馏的工艺流程、生产实践。
3
The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reducedpressuredistillation, precipitation method, is discussed.