An isomerization reaction is carried out in a batch reactor. The reaction is first-order, both isomers are liquids with a density of 900 kg/m³ at 163 °C. The reactor is filled in 10 minutes and emptied in 12 minutes. During the 14 minutes required to heat up the reactor, the reaction is negligible, it can be assumed to begin only when 163 °C is reached. 900 t of product must be synthesized in 7000 hours of operation per year. Conversion is 97%. What is the required volume of the stirred batch reactor operated isothermally at 163 °C? The reaction rate coefficient is 0,8 1/h.