Title:
METHOD AND APPARATUS FOR PREPARING ISOPROPYL ALCOHOL
Document Type and Number:
WIPO Patent Application WO/2024/034794
Kind Code:
A1
Abstract:
The present invention provides a method for preparing isopropyl alcohol, and an apparatus for carrying out the method, the method comprising the steps of: (S1) supplying a feed stream, containing a propylene monomer and water, to a reactor in the presence of a catalyst to perform a gas phase reaction; (S2) partially condensing a reaction product, obtained by means of the gas phase reaction, in a heat exchanger, and then transferring the uncondensed gas phase reaction product to an absorption tower and a portion of the condensed liquid phase reaction product to a pH measurement system connected on-line between the heat exchanger and the absorption tower; (S3) calculating the catalyst content by measuring the pH of the liquid reaction product transferred to the pH measuring system, and supplementing the reactor with the catalyst in an amount corresponding to the calculated content; and (S4) separating isopropyl alcohol contained in the gas phase reaction product in the absorption tower by dissolving the isopropyl alcohol in absorbing water.
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Inventors:
JANG KYUNG SOO (KR)
LEE SUNG KYU (KR)
HWANG SUNG JUNE (KR)
LIM KIL TAEK (KR)
LEE SUNG KYU (KR)
HWANG SUNG JUNE (KR)
LIM KIL TAEK (KR)
Application Number:
PCT/KR2023/007150
Publication Date:
February 15, 2024
Filing Date:
May 25, 2023
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07C29/03; C07C29/88; C07C31/10
Foreign References:
| KR20210158146A | 2021-12-30 | |||
| KR20190019060A | 2019-02-26 | |||
| KR20040033391A | 2004-04-28 | |||
| US4351970A | 1982-09-28 | |||
| EP2939995A1 | 2015-11-04 |
Attorney, Agent or Firm:
P&P PATENT LAW FIRM (KR)
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