New process for peracetic acid production from acetic acid and hydrogen
peroxide based on kinetics and distillation mode
Reaction kinetics of peracetic acid from acetic acid and hydrogen
peroxide in a helical capillary microreactor was investigated and
modelled via regression of the measured conversion rate of hydrogen
peroxide. It was found that the activity of the proton in the sulphuric
acid solution played a significant role in the synthesis as a catalyst.
The activities of the proton were calculated with the ELECNRTL equation
and used to obtain a kinetic model with the apparent activation energy
of peracetic acid synthesis and hydrolysis of 53.63 and 54.45 kJ/mol,
respectively. A new continuous process for industrial manufacture of
peracetic acid solution (30 wt. %) was proposed, where the reacted
solution from the microreactor is distilled to separate unreacted
reactants and sulfuric acid which are recycled as feed. The feasibility
of the new process was validated by economic assessment.