What are the components of the methyl acetate mixture produced as a by-product of PTA?
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I would appreciate the help of those who have experience with PTA – what are the components of the methyl acetate mixture produced as a by-product of PTA, and what are the concentrations of each component?
Methyl acetate (MeAc) is a by-product of the oxidation of acetic acid in the PTA oxidation reactor. Main components: Methyl acetate (MeAc) 96%, water 3.5%, acetic acid 0.3% :P
The components on the second floor are those obtained after recycling the azeotrope, along with the proportion of methanol produced from methyl acetate. As for the storage tank containing methyl acetate recovered from PTA, the composition is as follows: acetic acid 0.09%, isobutyl acetate (IBA) 6.81%, methyl acetate 79.41%, and water 13.59%. I’m not sure which component you’re looking for; since the composition of methyl acetate varies at different stages, could you please specify which stage you’re referring to?
Could you explain the principle behind the formation of methyl acetate?
4# 93409473 This is related to the use of acetic acid as a solvent in TA’s production processes. PX oxidation takes place under high (moderate) temperature and pressure conditions. Although acetic acid does not participate in the reaction mechanism, it can still undergo a \"combustion reaction,\" resulting in the formation of small amounts of organic compounds containing one carbon atom – methane, methanol, formaldehyde, and formic acid. However, the main products are carbon oxides and methyl acetate. It can be seen from this that methyl acetate is primarily formed through a polyesterization reaction between methanol produced by the combustion of acetic acid and acetic acid itself; in other words, the production of one molecule of methyl acetate requires the consumption of two molecules of acetic acid