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Precoat Filtration: Not a Dead End Street�Introduction of a New Generation of Candle Filters

MBAA TQ vol. 43, no. 1, 2006, pp. 36-41  |  VIEW ARTICLE

Thomas A. Weigand and J�rg Zuber. FILTROX AG, St. Gallen, Switzerland.

Abstract
Recent developments in the area of beer filtration, namely the introduction of several designs of crossflow filtration systems on an industrial scale, may suggest that conventional beer filtration with precoat filters using diatomaceous earth (DE) and or other filter aids will soon become obsolete. A close review of the current situation, however, shows a different picture. DE is still the primary filter aid used in the brewing industry, with some thousands of installations throughout the world. This paper highlights recent developments in the design of candle filters as commonly used throughout the brewing industry and reviews results from industrial-scale start-ups incorporating the latest technological developments of hardware and filtration materials.

Keywords: candle filters, diatomaceous earth filtration, precoat beer filtration

 

S�ntesis
Desarrollos recientes en la filtraci�n de cerveza, especialmente en cuanto a la introducci�n de varios dise�os de sistemas de filtraci�n transversal en escala industrial, podr�an sugerir que la filtraci�n convencional, con filtros de precapa utilizando tierra diatom�cea u otros adyuvantes de filtraci�n, pronto ser� obsoleta. Una cuidadosa revisi�n de la situaci�n actual demuestra que la tierra diatom�cea sigue siendo el adyuvante primario para la filtraci�n en la industria cervecera, con miles de instalaciones en todo el mundo. Aqu� se presenta lo m�s nuevo en el dise�o de filtros de vela utilizados en la industria cervecera y repasa lo que se ha hecho en instalaciones recientes incorporando los m�s nuevos desarrollos tecnol�gicos en equipos y en materiales de filtraci�n.

Palabras claves: filtros de vela, filtraci�n con tierra diatom�cea, filtraci�n de precapa

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