DEVELOPMENT AND SUBSTANTIATION OF PARAMETERS OF MICROWAVE INSTALLATION WITH SPHERICAL REONATOR FOR THERMAL PROCESSING OF BOILER WASTES

Abstract

The improvement of microwave technology and the design of installations, that ensure the matching of the processes of dehydration, grinding and heat treatment of non-food animal slaughter waste is an urgent task. The purpose of the work is the development and justification of the effective parameters of the operation of a microwave plant for heat treatment of non-food waste of animal origin of high humidity in a continuous mode, which ensures the improvement of the quality of the feed product with the least operating costs. In the work we used statistical processing of the results of the research, using computer programs Microsoft Excel 10.0, Statistic 5.0, 3D modeling of the design of microwave installations in the Compass-3D V15 program. The developed microwave device with a spherical perforated resonator provides for combining the processes of dewatering, grinding and heat treatment of raw materials in a continuous mode. It contains a rotating spherical resonator in a spherical shielding body, with a receiving and unloading nozzles. A dielectric shaft is rotated along the vertical axis of the resonator, rotating from the electric motor. The upper parts of the spherical shielding unit and the spherical resonator, whose diameter is matched to the wavelength, are as close as possible to each other, and have coaxial holes for fixing the receiving branch pipe and the dielectric shaft. On the outside of the shielding case, a chopper and microwave generators are installed, so that the emitters are directed into the rotating spherical resonator uniformly along the perimeter of the dielectric plate segment. The spherical resonator is perforated, the dimensions of the holes are coordinated with the particle sizes of the finished products. An operating-technological scheme for the operation of a device with a spherical diffraction cavity for heat treatment of raw materials in a continuous mode is developed. The microbiological indices of the non-food waste of animals slaughter after exposure of electromagnetic fields and ultrahigh frequencies were estimated. As a result of the research, a microwave technology was developed for heat treatment of non-food waste of slaughter animals with high humidity for the production line of protein feed, using a spherical perforated resonator. A positive evaluation of the microbiological indices of a product, treated in an electromagnetic field of an ultrahigh frequency, was carried out.