CHIYODA ACETIC ACID

CHIYODA ACETIC ACIDMohd Kasmil (05DPE11F1040)Liza Robert (05DPE11F1014)Albert Jay (05DPE10F2013)

What is Acetic Acid?anorganic compoundwith thechemical formulaCH3COOH

colourless liquid

It is an important chemical reagent and industrial chemical, mainly used in the production of cellulose acetate for photographic film and polyvinyl acetate for wood glueMETHODS OF ACETIC ACID PROCESSOxidation of acetaldehyde process

Direct oxidation of ethylene process

Methanol carbonylation process (World Leading Process)

Introduction of Acetic AcidRaw material Methanol (CH3OH) & Carbon Monoxide (CO).

ProcessMethanol Carbonylation.

Catalyst Heterogenous rhodium catalyst in the active rhodium complex (immobilized catalyst)Advantages of immobilized catalyst systemMake the handling of catalyst easy.

A high level of reactor productivity can be obtained.

The formation of by-products can be supressed.

The corrosive environment is moderated.

The process consists of the following unitsPrincipal Reactions of Acetic AcidCarbonylation CH3OH +COCH3COOH(Methanol) (acetic acid)

Esterification CH3OH + CH3COOH CH3COOCH3 + H2O(methanol) (Acetic acid) (methyl acetate)

Etherification 2CH3OH CH3OCH3 + H2O(Methanol) (Dimenthyl ether)

CHEMISTRY: PRINCIPLE REACTIONSPreparation reaction for Methyl Iodide (methyl iodide generator)Promoter (CH3I) I2+CO+H2O2HI+CO2 HI+CH3OHCH3I+H2O

Gaseous By-Products Water-gas shift reaction : CO+H2OCO2+H2

Methanation : CH3OH+H2CH4+H2O CO+3H2CH4+H2O

Liquid By-Products Very small amount produced. Except propionic acid(heavy by-products) where eliminated with small purges from the purification unit.

Iodide-Removal Reaction To remove iodide compounds by a property adsorbent.

MI GENERATION UNITCH3OH + CO CH3COOH

170-190 0C11