Method for hydrolysing acetone cyanohydrin

A process for hydrolysis of acetocyanohydrin, the process comprising:

• preparing methyl methacrylate in a loop reactor by using sulphuric acid as a precursor,
• wherein
• at least one heat exchanger present in the loop reactor is equipped with turbulators,
• at least one reaction component is fed into the loop reactor via a metering ring, which is installed externally and immediately upstream of a pump with a pump housing in the loop reactor,
• the at least one heat exchanger equipped with turbulators is positioned downstream of a metered addition of sulphuric acid and of acetocyanohydrin in flow direction, and
• the turbulators are turbulators with 100-1200 turns/m.