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Tech. Q. Master Brew. Assoc. Am., 1991, 28(1), 12-17. English, sp

A process engineering and technological approach to mash separation.

Moll, M., Baluais, G., Dodds, J. and Leclerc, D.

A technique for the modelling and optimisation of mash separation is described together with a modified laboratory mashing and extract determination procedure which is designed to supply the data required for the model. The mashing process is intended to be closer to industrial practice than conventional laboratory methods, taking account of the optimum temperatures for the different enzymic activities and other necessary reactions. The evaluation of mash filtration characteristics is based on physical theories concerning the kinetics of filtration, filter cake compression and the washing of filter cakes (as in sparging). In order to facilitate this process, the authors recommend a constant pressure batch mash filtration system, with continuous electronic monitoring of the weight of the vessel and its contents, since the extract yield is calculated by "mass balance". It is claimed that laboratory results obtained using these methods can be scaled up to industrial proportions with much greater accuracy of prediction than those from conventional laboratory mashing and separation tests.
Keywords : engineering equipment extract prediction mash separation mashing model simulation physics weighing