求翻译：本设计是年处理量为170万吨的辽河混合原油常减压装置的设计，根据辽河混合油田的特点，本装置采用三段汽化，即初馏塔、常压塔和减压塔，常压塔采用浮阀塔板，初馏塔选用单溢流型式，常压塔选用双溢流型式，按要求给出重要塔板上的操作条件，并计算塔高、塔径等水力学参数是什么意思？

The design is with capacity of 1.7 million tonnes of crude oil in Liaohe crude oil distillation unit mix design, according to the Liaohe oil field of mixed characteristics, the device uses three sections of vaporization, that is the beginning of distillation tower, the atmospheric tower and vacuum t

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This design is the year process load is 1,700,000 ton Liaohe River mix crude oil often the decompressor design, according to the Liaohe River mix oil field characteristic, this installment uses three sections of vaporization, namely the primary tower, the constant pressure tower and the reduced pres

This design is years processing volume for 1.7 million tons of liaohe mixed crude oil often decompression device of design, under liaohe mixed oilfield of features, this device used three segment vaporization, is early distillation Tower, and atmospheric Tower and decompression Tower, atmospheric to

This design is years processing volume for 1.7 million tons of liaohe mixed crude oil often decompression device of design, under liaohe mixed oilfield of features, this device used three segment vaporization, is early distillation Tower, and atmospheric Tower and decompression Tower, atmospheric to