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THE RE‐USE OF STILLAGE WATER IN THE MASHING OF GRAIN AS A MEANS OF ENERGY CONSERVATION
Author(s) -
Ronkainen P.,
Leppänen O.,
Harju K.
Publication year - 1978
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1978.tb03851.x
Subject(s) - stillage , mashing , energy conservation , evaporation , pulp and paper industry , biofuel , ethanol fuel , raw material , environmental science , chemistry , waste management , ethanol , food science , engineering , physics , organic chemistry , electrical engineering , thermodynamics
The rise in the cost of energy is a major factor in increasing the costs of such distillery processes as the pre‐concentration and drying of stillage. Most of the stillage water (70–80%) that would have to be evaporated can instead be separated and used again for mashing, with only the remaining 30–20% being made up with fresh water. Experiments were performed on both laboratory and production scales. The energy saving resulting from this reduced evaporation of water has been calculated to be 3000 t/a heavy fuel oil in the production of 5000 t/a 100% ethanol in a grain distillery.