Digester cooking screens switching systems

Details Digester cooking screens switching systems Digester cooking screens switching systems

D - Textiles, Paper

21

C

92/57.2

D21C 7/00 (2006.01) D21C 7/14 (2006.01)

Patent

CA 1105755

DIGESTER COOKING SCREENS SWITCHING SYSTEMS ABSTRACT OF THE DISCLOSURE A method and apparatus for selectively withdrawing liquor from digester cooking screens for controlling the temperature in continuous digesters. First and second pairs of screens, with cooperating headers, are provided, and first and second outlets spaced circumferentially around the digester are associated with each header. Within each pair of screens withdrawal is practiced so that each header is rested during each ultimate withdrawal step, and the side from which the liquor is drawn each successive withdrawal step that the same header is used is alternated. In practicing the invention, header blockage caused by deposited debris and scale is minimized and increased uniformity and improved product quality result.

335110

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