Oil seed roaster ZHZU, Kharkiv region.

ZHZU roasters are intended for the preparation of oil seeds and oil cakes for the extraction of vegetable oils by their hydrothermal treatment in vats of the roaster, both during single pressing and double pressing.
(//tractor-service.com)
The purpose of hydrothermal treatment is to cause certain physical and chemical changes in the pulp and changes in the structure of its particles, which contribute to the best effect inoil extraction.

In addition, in some cases, additional chemical changes occur that ensure the production of products of the highest quality (for example, during the processing of soybean seeds - the modification of some proteins and the removal of unpleasant-smelling substances with moisture).