Celanese International Corporation

Hoechst Celanese Corporation

Michael B Lakin

Ronald David Shaver

Raymond J Zinobile

Ashok Rakhe

Edward G Zey

Thomas H Shockley

Jack Chosnek

David William Ford

Eductor mixers are used to mix the reaction medium in a carbonylation reactor. A portion of the reaction solution withdrawn from the reactor and directed through a pump around loop. The pump around loop is fed back to the reactor through the eductor mixers. In addition, a pump around loop may pass through one or more steam generators and/or heat exchangers.

Eductor-based reactor and high flow pump around loops for production of acetic acid

Eductor-based reactor and pump around loops for production of acetic acid

Methods are provided for the reduction in entrainment of solids and liquids, and loss of valuable chemicals such as catalysts, in processing and refining sequences that employ separation devices in which non-vapors are to be separated from vapors. The methods comprise regulating the velocities of the incoming stream and the vapor being separated, and creating and maintaining the flow of the incoming stream tangentially to the inner surface of the separation vessel, so as to aid in the reduction in entrainment and loss of valuable chemicals.

Methods for reducing entrainment of solids and liquids

Ibuprofen is isolated from tablets or other solids by dissolving the ibuprofen in an alkane or cycloalkane solvent, filtering off undissolved solid, and stripping the solvent from the ibuprofen by evaporation or by recrystallization at low temperatures.

Isolation of ibuprofen from tablets

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Corpus Christi, TX, United States of America

Michael B Lakin