One of the most energy-intensive stages in match production is the drying of match splints. Therefore, the optimization of the drying process and the selection of optimal parameters is a relevant task. Filtration drying is proposed for the removal of moisture from match splints, as one of the highly effective and economical drying methods.
The paper presents the results of a study on the hydrodynamics of the stationary layer of wild carrot pomace during filtration drying, as a raw material for the production of ecological alternative solid fuel. The main geometric parameters of individual wild carrot pomace particles and the physicomechanical properties of the stationary layer were determined experimentally. A diagram of the experimental setup is provided.
The study proposes filtration drying for drying match splints. Experimental methods for investigating heat exchange between the heat agent and the material are presented. Theoretical aspects of heat transfer during filtration drying are analyzed. The effect of the heat agent's velocity on heat exchange efficiency is determined within the Reynolds number range of 200 ≤ Re ≤ 500. The experimentally obtained data are generalized using a dimensionless complex. A dependency for determining the heat transfer coefficient is proposed.
The paper describes the study of the kinetics of filtration drying of barley brewer’s spent grain. The dependencies of the process at different parameters of the stationary layer and the heating agent are presented: different heights of the wet material H (40 mm, 80 mm, 120 mm, and 160 mm), different temperatures of the heating agent T (50 °C, 70 °C, 80 °C, and 90 °C), and the velocities of the heating agent through the stationary layer of material v0 (1.26 m/s, 1.55 m/s, 1.81 m/s, 2.31 m/s, and 2.82 m/s).
The filtration method of gradual dehydration of Iron(II) sulfate heptahydrate hase been proposed. Based on the generalization of experimental data of hydrodynamics, the calculated dependence Euзовн=155∙Reзовн-0,55∙Hdч was obtained, which makes it possible to determine theoreticallypressure losses in the stationary layer of FeSO4·7H2O.According to the results of complex thermal analysis, the regularities of the gradual dehydration process of FeSO4·7H2O have been established in different temperature intervals.