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1. (WO2017199120) PROCESSES FOR SEPARATING ORGANIC IMPURITIES FROM AQUEOUS INORGANIC ACIDS

Pub. No.:    WO/2017/199120    International Application No.:    PCT/IB2017/052603
Publication Date: Fri Nov 24 00:59:59 CET 2017 International Filing Date: Fri May 05 01:59:59 CEST 2017
IPC: C01B 7/07
C07C 17/154
Applicants: SABIC GLOBAL TECHNOLOGIES B.V.
PENG, Kuang-Yao Brian
HUCKMAN, Michael
Inventors: PENG, Kuang-Yao Brian
HUCKMAN, Michael
Title: PROCESSES FOR SEPARATING ORGANIC IMPURITIES FROM AQUEOUS INORGANIC ACIDS
Abstract:
Methods for removal of organic impurities from an aqueous acid stream obtained from an oxychlorination of methane reaction are described. A method includes heating an aqueous acid stream obtained from a quenching unit at a pressure of 1.4 MPa (200 psig) to 1.75 MPa (250 psig) to produce an aqueous acid product stream and an overhead stream. The aqueous acid product stream includes at least a minimal amount of, or substantially no, chlorinated hydrocarbons. The overhead stream can be recycled to the quenching unit or subjected to conditions suitable to remove water and chlorinated hydrocarbons from the overhead stream to produce a high purity hydrogen chloride stream.