The purpose of this work is to study the interaction of the croton fraction with amides – urea and thiourea and to develop technologies for obtaining accelerators for vulcanization of rubbers for the ...rubber industry.
Industry of pyrroles synthesis on the basis of acetylene, ammonia and amines over polyfunctional catalyst can be organised only when for its recovery the rational industrial technology allowing to ...synthesize this product in necessary quantity and demanded quality cheap enough from accessible raw materials is developed. Considering the issues related to the development of a new reactor with high productivity and economic efficiency, the processes running in the reactor were studied. Phase characteristics have been investigated in response to changes in acetylene conversion rate due to the height of the catalyst layer. As a result, high productivity of acetylene production with zinc-chromaluminum catalyst at the temperature range of 340-440оС is achieved for 92% when the layer height is 1200 mm from the reactor top point. Based on the mass balance as well as the experimental result, a reactor for the industrial synthesis of pyrroles has been proposed.
In the work, an overview of freeze drying was made, as well as the use of pre-treatments with microwave waves. The change in temperature during freeze-drying of onion and beet samples with and ...without pre-treatment was experimentally studied. When processing the product with short-wave electromagnetic waves, it was noticed that the freeze-drying process without pre-treatment of the product was 5 hours longer than for dried samples with pre-treatment in the microwave range.
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