Wort Stripping Technology To Save Energy�Targets and New Industrial Results
MBAA TQ vol. 43, no. 4, 2006, pp.
288-292 |
VIEW ARTICLE
Bruno Bonacchelli (1), Rafael Tigel (1), Fr�d�rique
Harmegnies (1), and Benoit Formesyn (2). 1. Meura Technologies, Voie
Minckelers 1, B-1348 Louvain-la-Neuve, Belgium. 2. InBev,
Brouwerijplein 1, B-3000 Louvain, Belgium.
Abstract
In breweries, the boiling step alone can represent up to 30% of the
total process energy costs of packaged beer and up to 50% of the energy
required in the brewhouse. Recent technological developments have allowed
the production of high-gravity wort while still achieving laboratory
extraction yields, even without the use of weak wort as mashing liquor.
Evaporation, therefore, is no longer needed. Saving energy is on
everyone�s mind these days, and we have developed an industrial system
that combines moderate boiling with efficient stripping of unwanted
volatile compounds from wort. Trials were first carried out on a pilot
scale in a pilot brewery. We then developed a pilot stripper that was used
in different industrial brewing environments. After validating the method,
an entire industrial plant, suitable for batch sizes up to 500 hL, was
commissioned. Industrial trials were performed, and the results are
discussed.
Keywords: DMS, energy efficiency, stripping column technology, wort
stripping
S�ntesis
La etapa de cocci�n representa hasta un 30% del total de energ�a
requerida por el proceso cervecero para cerveza envasada y hasta el 50% de
la energ�a utilizada en la sala de cocimiento. Desarrollos tecnol�gicos
recientes han permitido que se elabore mosto �high-gravity� sin perjuicio
de los rendimientos de extracto, aun sin utilizar mosto aguado como el
licor de mezcla. Por lo tanto, la evaporaci�n ya no es necesaria. Hemos
desarrollado un sistema industrial que combina un hervor moderado con una
eficiente reducci�n de vol�tiles indeseados del mosto. Primero se hicieron
pruebas en una planta piloto para luego desarrollar un separador de
vol�tiles (�stripper�) que fue utilizado en diferentes entornos cerveceros
industriales. Despu�s de validar el m�todo, se comision� una planta
industrial entera para realizar pruebas de hasta 500 hL. Los resultados se
discuten aqu�.
Palabras claves: DMS, eficiencia energ�tica,
tecnolog�a de separaci�n de vol�tiles, separaci�n de vol�tiles del mosto
