This paper introduced a new type and special structured vacuum pump unit suitable for dry type reduced-pressure distillation.
本文介绍适用于干式减压蒸馏的特殊结构真空抽气设备。
The process flow and production practice of air-distillation and reduced-pressure distillation 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。
The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reduced pressure distillation, precipitation method, is discussed.
探讨了直接加热法、直接水蒸汽法、间接水蒸汽法、减压蒸馏、酒精沉淀等五种回收方法的优缺点。
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