Technology for combining the processes of salting and heat treatment of offal in a microwave installation

Abstract

Relevance. With the increase in livestock production, the question of the rational use of by-products arises. Currently, such raw materials are mainly sold without processing. To increase the profitability of production, it is proposed to sell the offal in boiled form. One of the ways to obtain boiled products from small-sized meat raw materials with good consumer properties is the use of endogenous heating during massaging in brine.Methods. Theoretical studies were carried out by analyzing the physical processes associated with the propagation of electromagnetic waves in media with losses; the mass-transfer processes in raw materials with a curing substance during endogenous heating were studied. The visualization of the distribution of the electromagnetic field (EMF) in a cylindrical slotted resonator, the calculation of the intrinsic quality factor and the electric field strength (EF) were carried out using the CST Microwave Studio program. The substantiation of the operating modes of the installation was carried out through regression models obtained using a threefactor experiment of type 23 in the programs Statistica 12.0, Microsoft Excel 10.0. In the Compass-3D 18 program, three-dimensional modeling of the structural design of cylindrical slotted resonators-drums was carried out. Electromagnetic safety was evaluated by the results of studies of the power of the radiation flux by the installation using a PZ-33M, PZ-41 measuring devices.Results. The operating modes of the developed and manufactured microwave installation with a slotted cylindrical resonator-drum for heat treatment and massaging of raw materials are established, taking into account regression models. They are: productivity 10 kg/h; specific power 1.6 W/g; processing time 1.0 h, at a salt concentration of 12.88%; specific energy costs 0.165 kW·h/kg; frequency of rotation of the resonator-drum 23 rpm.