Premium
Comparison of Processing Economics of Different Starch Dryers
Author(s) -
Heß D.
Publication year - 1984
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19840361102
Subject(s) - waste management , heat exchanger , environmental science , process engineering , engineering , mechanical engineering
Abstract The comparison refers to native starch with inlet moistures of 33–40% as well as to normal starches with inlet moistures of 12–20%, whereby the outlet moistures vary from 1–12% depending on the application of the products. The difference between the convective heat transfer, as e. g. used in flash dryers as well as in fluidized bed dryers and the contact dryers, e. g. tubular dryer and spiral dryer, is especially pointed out. Beside the important criterion of the specific energy requirement the product quality and the risk of explosion resp. protection of explosion of such plant are mentioned. The data obtained in practice confirm the results. In this connection also the saving of energy by means of special heat exchanger for exhaust gas is considered, that means the heat content of the exhaust air is taken into the fresh air, in order to receive a better energy balance.