Journal
Scientific journal NRU ITMO. Series: Processes and Food Production Equipment
UDK66.047.3.085.1
Issue:1 (27)
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Hardware design for piglet feed processing with infrared radiation
Annotation
The digestibility of nutrients of feed consisting of a mixture of oats, wheat and rye is not more than 35–40%.The main objective of this research was to treat feed for young piglets with infrared radiation, with the aim of improving the digestibility of protein. Heat treatment was carried out in a commercial screw-type installation, RaytekMiniTempMT6 infrared pyrometer being used to measure the temperature of the feed and installation walls. During the experiment upper layer of the feed mixture and lower installation wall was heated by infrared radiation depending on the following parameters: installation fill, screw rotation speed, installation capacity, screw jacket surface temperature, product temperature at the output, infrared radiation density. An experimental study of heat treatment by infrared radiation in a screw type installation was carried out at output feed temperature of 74–75°C. The treatment resulted in denaturation of the protein and increasing protein digestibility. Optimum process parameters was found to be the following: power – 14 Hz, emitter power – 12 kW, product temperature at the output – 115°C, product residence time in the installation – 9 min, capacity – 250 kg/h.
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