EMPIRICAL STUDY OF THERMAL PROPERTIES OF A SCREW ELECTRO-MECHANICAL HYDROLYZER FOR PROCESSING POULTRY BY-PRODUCTS

Abstract

Poultry farming is one of the key players in agriculture, but as a result of the activity of this industry, an excessively large amount of waste, mainly feathers, is generated. Feathers are valuable keratin raw materials for processing. One of the most effective methods of processing feather waste on an industrial scale is the hydrothermal hydrolysis method. Increasingly, hydrothermal hydrolysis of poultry by-products is performed in a screw electromechanical hydrolyzer. The screw electromechanical hydrolyzer is characterized by its versatility, and the mechanical forces arising during operation improve the mixing and heat transfer processes. Temperature control during hydrothermal hydrolysis in a screw electromechanical hydrolyzer is extremely important, so the study of this work is relevant.The purpose of this work is an empirical study of the thermal properties of a screw electromechanical hydrolyzer. To achieve this goal, a screw electromechanical hydrolyzer was developed for the processing of poultry by-products.The objects of the study were selected: a self-regulating heating cable SRF 30-2CR with a power of 30 W/m and a length of 1 m for preheating raw materials, a ring micanite, 1.2 kW, 230V for the main heating and two single-phase stators, 720 W for magnetic field exposure. Measurements were carried out in a closed room with an ambient temperature of 24 oC for 15 minutes using an infrared pyrometer BENETECH GM533A. Control of the upper limit of the heating temperature is carried out using a TENSE DT-36E digital thermostat with a J-type thermocouple.According to the results of the study, the dependence of the temperature of the research objects on time was obtained. The obtained results make it possible to state that the proposed screw electromechanical hydrolyzer is capable of maintaining the necessary temperature parameters for hydrothermal hydrolysis of poultry by-products.