Lyashenko A. Heat and mass transfer in the chamber of combined processes of drying and growing shallow

In dissertational work processes of heat and mass transfer in the working chamber of installation of the combined processes for the purpose of development of a technique of heat technical calculation of the working chamber of installation for power resource-saving technology of receiving organic-mineral fertilizers are studied. The mathematical model by means of a package of the applied PHOENICS 2008 programs which in a wide interval of change of regime parameters describes processes of heat and mass transfer, movements, concentration of a firm phase and the heat-carrier which occur in the working chamber is developed. Experimental data on time of drying of individual particles of a studied material are presented. Limits of temperature of ignition of a not heat-labile material which is investigated that has crucial importance at high-temperature processing are defined by a derivatografic analysis. Results of investigations are generalized by the criterial equations. The technology of receiving qualitative organic-mineral fertilizers is offered at heat-carrier temperature on an entrance in the chamber 600 - 800С and speeds of turns of a rotor of a shaft 650-700 rpm with an exception of adhesion of a material to a working surface (specific costs of drying of q=3500 of kJ/kg of the evaporated moisture). The plant of the combined processes as a part of the technological line is developed for production of organic-mineral fertilizers by productivity of 2300 tons/year.