包括低压精馏塔、加压精 馏塔、塔釜再沸器、塔顶冷凝器和辅助冷凝器；
The system comprises a low pressure rectifying tower, a pressurizing rectifying tower, a tower kettle reboiler, an overhead condenser and an auxiliary condenser;
蒸发辅助设备有除沫器、冷凝器、输水器、真空泵等。
Evaporation assisted device has a demister, condenser, water heater, vacuum pump.
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