FIELD: chemistry.
SUBSTANCE: present invention relates to an improved method of monitoring and/or controlling the process of producing (meth)acrolein and/or (meth)acrylic acid through partial oxidation in a gas of C3- and/or C4- precursor compounds in the presence of heterogeneous catalyst in form of particles, in a reactor with two or more vertical thermo-plates, placed parallel each other, forming gaps between them. A heterogeneous catalyst in form of particles is put in the gaps. The gaseous reaction mixture is passed through the gaps. The controlled and/monitored value chosen is one or several temperature values, which are measured in one or several gaps, in one or several points of measurement, which are distributed along the height of each gap.
EFFECT: provision for homogeneity of measured temperature zones with the aim of controlling the process.
25 cl, 7 dwg
