reduced-pressure distillation

When this new technique was applied, the theoretical plate number of the extractive distillation tower can be reduced to less than 20.The technique has been granted a patent of China ( CN1120828C) and has been applied in 1000 t/ a device.

采用此工艺的萃取精馏塔理论塔板数可降低至20块以下。该工艺已获中国发明专利（CN1120828C），并已在千吨级生产装置上实际应用。

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