METHOD AND APPARATUS FOR PRODUCING SATURATED CARBOXYLIC ACID HAVING 1-4 CARBON ATOMS

Japanese Patent JP3542757

B2

PROBLEM TO BE SOLVED: To provide a method and apparatus for producing a 1-4C saturated carboxylic acid, capable of obtaining a high acid yield and producing a by- product as an high-value-added substance.
SOLUTION: When a reaction outlet gas is partially returned during reaction gas circulation and acid concentration in content returned by a separation process is decreased, a saturated or unsaturated 4C hydrocarbon or a mixture thereof is subjected to vapor phase oxidation in the presence of an oxygen- containing gas and steam at temperature of 100-400°C reaction temperature under a pressure of 1.2×105 Pa to 51×05 Pa by using at least one catalyst to produce a 1-4C saturated carboxylic acid. In the production method, a crude acid is separated from reaction outlet gas by counterflow cleaning. Thereby, high selectivity is obtained and necessary energy consumption is decreased and high passive safety against danger of explosion is obtained and whole process execution can simply be formed thereby.

Christoph Rüdinger
Hans-Jürgen Eberle
Michael Harman

JP2000063970A

July 14, 2004

March 08, 2000

Click for automatic bibliography generation  

Consortium fuer elektrochemische Industrie GmbH

B01J23/28; C07B61/00; C07C51/21; C07C51/215; C07C51/25; C07C51/42; C07C51/48; B01J23/22; C07C53/02; C07C53/08; C07C53/122; (IPC1-7): C07C51/25; B01J23/22; B01J23/28; C07B61/00; C07C51/215; C07C53/08; C07C53/122

JP2000026363A
JP2000026364A
JP2000505723A
JP2001523237A
JP50017969B1

Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel

Previous Patent: MID SOLE STRUCTURE FOR SPORT SHOES

Next Patent: LINK CHAIN WINDING AND FEEDING DEVICE