Method and apparatus for preparing isopropyl alcohol

Abstract

Provided are a method for preparing isopropyl alcohol and an apparatus for the same. The method includes performing a gas phase reaction by supplying a feed stream including a propylene monomer and water to a reactor in the presence of a catalyst; partially condensing a reaction product of the gas phase reaction in a heat exchanger, transferring an uncondensed gas phase reaction product to an absorption column, and transferring a portion of the condensed liquid phase reaction product to a pH measurement system connected on-line between the heat exchanger and the absorption column; measuring a PH of the liquid phase reaction product to calculate a catalyst content, and supplementing an amount of a Catalyst corresponding to the calculated catalyst content to the reactor; and dissolving isopropyl alcohol included in the gas phase reaction product in absorbing water and separating the isopropyl alcohol in the absorption column.

Dependencies are inferred from the claim text.