SYSTEM AND METHOD FOR SEPARATING (E)-1-CHLORO-3,3,3-TRIFLUOROPROPENE, HF, AND HEAVY ORGANIC COMPOUND AND REACTOR PURGE

Japanese Patent JP2023027248

A

To provide a separation method for taking out a heavy organic compound formed in various production processes of HCFO-1233zd(E).SOLUTION: A method for separating HCFO-1233zd(E), HF and a mixture of a light substance and a heavy substance includes the steps of: separating the mixture into a flow containing the HCFO-1233zd(E) and a purge flow containing the HF and the light substance and the heavy substance; feeding the purge flow containing the HF and the light substance and the heavy substance to a flush distillation separator; separating the purge flow into an HF flow and an organic compound flow containing the light substance and the heavy substance, distilling the HF flow from the separator by a first distillation column, and forming a tower bottom stream of a tower top substance rich in HF and the light substance; re-circulating the tower top substance rich in HF containing the heavy substance to a supply raw material; adding the tower bottom flow of the light substance to the flush distillation separator; feeding the organic compound flow to a second distillation column, distilling the organic compound flow, and separating the organic compound flow into the HF, a light organic compound and a heavy organic compound; re-circulating the HF and the light substance; and recovering the heavy substance.SELECTED DRAWING: Figure 1A

Yuon Chiu
Seri gas turbo
Stephan A. Cottrell
Jennifer W. MacLaine
Tao Wang
Rajiv Ratna Singh
Raj Banabari

JP2022197729A

March 01, 2023

December 12, 2022

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Honeywell International Inc.

C07C17/383; C07C17/38; C07C17/386; C07C21/18

Osamu Yamamoto
Toru Miyamae
Junichi Matsuo
Toyoji Matsuda

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