不飽和炭化水素の分離精製装置および分離精製方法

Japanese Patent JP4134391

B2

An apparatus for separating and purifying saturated hydrocarbon comprises an extractive distillation column to which a material containing an unsaturated hydrocarbon and a solvent are fed and in which the unsaturated hydrocarbon is separated and distilled, a sensor for measuring the concentration of an impurity in the extractive distillation column, a sensor for measuring the concentration of the unsaturated hydrocarbon, a sensor for measuring the pressure difference between the top and bottom of the distillation column, a control valve for controlling the amount of unsaturated hydrocarbon taken out from the bottom of the column and to be returned to the column, a control valve for controlling the amount of solvent, a control valve for controlling the amount of reflux, a heater for controlling the temperature at the bottom of the column, prediction control means for calculating prediction values of the concentration of the impurity, the concentration of the object, and the pressure difference based on the outputs of the sensors, and for performing control according to the prediction values. A method for separation and purification using the apparatus is also disclosed. By adopting the apparatus and method, the objective unsaturated hydrocarbon is stably taken out at a predetermined concentration irrespective of the variation of material component.

Masanobu Kanouchi
Arimori Yasuhiko
Toshihiro Nakano

JP24356298A

August 20, 2008

August 28, 1998

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Zeon Corporation

C07C7/08; B01D3/40; B01D3/42; C07C11/08; C07C11/12; C07C11/167; C10G7/08; C10G7/12

JP60156623A
JP60104021A
JP6054704A
JP5754129A
JP5683421A
JP51127006A
JP5775104A

Hitoshi Maeda
Shingo Nishide

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