Oy Alko Ab

Olavi A Leppanen

Pentti P Ronkainen

Kai J Harju

Pertti J Erapolku

Kyosti T Vento

Heimo K Pesonen

This invention relates to a method for mashing starch-rich material, for example whole grain or partially crushed grain, when manufacturing alcohol. The method has a very low energy consumption, because the amount of water added to the starch-rich material in the beginning of the mashing stage is low. High pressure steam and a short processing time are used to keep the starch-rich material to water ratio during the processing stage below 1:2 because very little water is condensed from the water vapor during a short period. The mashed material is finally broken down by 'shooting' the material from the reactor by using pressurized air.

Method for mashing starch-rich material for alcohol production

A bubble-cap column for the distillation of high-sediment or clogging liquids is disclosed, in which the bubble-cap structures comprising a bubble-cap and a neck are detachable and removable from the column and lined with polytetrafluoroethylene.

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Vantaa, Finland

Olavi A Leppanen