Celanese International Corporation

Fred Ronald Olsson

Nathan Kirk Powell

Victor J Johnston

R Jay Warner

Lincoln Sarager

Radmila Jevtic

Manuel Salado

David E Lee

Adam Orosco

Ronald David Shaver

Trinity Horton

Radmila Wollrab

Gerald Grusendorf

Wayne David Picard

Nathan Jeremy Nagel

Ismael Torres Tejeda

Samuel Roundy

Murray Viard

Gerald Gruesendorf

Wael Amleh

Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using a low energy process. The crude ethanol product is separated in a column to produce a distillate stream comprising acetaldehyde and a residue stream comprising ethanol, acetic acid, ethyl acetate and water. The ethanol product is recovered from the residue stream.

Process to recover alcohol from an ethyl acetate residue stream

Ethanol production from the hydrogenation of acetic acid requires energy to drive the hydrogenation reaction and the purification of the crude ethanol product. Heat integration process to recover heat from one part of the production process to be used within the process improves efficiencies and reduces costs.

Process for heat integration for ethanol production and purification process

Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using a low energy process. The crude ethanol product is separated in a column to produce a distillate stream comprising ethyl acetate and a residue stream comprising ethanol, acetic acid, and water. The ethanol product is recovered from the residue stream.

Process to recover alcohol from an acidic residue stream

Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol product are employed to allow recovery of ethanol and remove impurities. In addition, the process involves separating the crude ethanol product using an extractive distillation column that employs an extraction agent, such as a recycled stream comprising water.

Process for producing ethanol using an extractive distillation column

An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the light ends column to increase capacity. Throughput or load on the light ends column is substantially reduced without compromising product quality.

Method and apparatus for making acetic acid with improved light ends column productivity

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Corpus Christi, TX, United States of America

Fred Ronald Olsson