Method for prepn. of acetic acid

Application Number  00129291 Application Date  2000.09.30
Publication Number  1336360 Publication Date  2002.02.20
Priority Information   1995/4/27 JP 104027/95  
Applicant(s) Name  Daicel Chemical Industries Ltd.  
Inventor(s) Name  Morimoto Yoshiaki;Uchiyama Hiroyuki;Agano Kishi  
Patent Agency Code  11105 Patent Agent  wu xiaonan
AbstractA process for producing acetic acid by reacting methanol, methyl acetate and the like with carbon monoxide continuously in the presence of a group 8 metal catalyst, methyl iodide and water, wherein water is added to the first distillation column to maintain the state of liquid separation at a decanter on top of the column. It is possible to produce acetic acid with a high quality unattainable heretobefore while reducing the energy of purification.