Apparatus for reducing the liquid content of sugar cane bagasse

Details Apparatus for reducing the liquid content of sugar cane bagasse Apparatus for reducing the liquid content of sugar cane bagasse

1984-01-24

1985-09-24

Schor, Kenneth M.

Sugar, starch, and carbohydrates

Apparatus

Treating sacchariferous material

127 2, 127 3, 127 43, C13D 102

Patent

active

045431299

ABSTRACT:
The liquid content of sugar cane bagasse is reduced by a low pressure process having a substantially longer duration than the duration of prior art high pressure liquid removal processes. For this purpose the liquid containing bagasse, as it emerges from a diffuser, is exposed to a relatively slowly increasing yet low pressure as compared to prior art high pressures, whereby the bagasse travels with a substantially constant speed sequentially through a dewatering zone, wherein a further compaction takes place, a preliminary squeeze-out zone and a final squeeze-out zone. During the preliminary squeeze-out the pressure above an open surface area or section without a sieve or screen is about 0.2 kg/cm.sup.2. During the final squeeze-out the pressure (p) is about p/0.6D>0.003, wherein D is the diameter, in mm, of a squeeze-out roller. The pressing duration t in seconds is also related to the squeeze-out roller diameter D such that D:t is smaller than a constant value K. The preliminary or initial squeeze-out may comprise two portions of which the first portion is initiated by a compacting roller. The preferred constant value is K=46.8.

REFERENCES:
patent: 3501345 (1970-03-01), Kaether et al.
patent: 3629002 (1971-12-01), Kaether et al.
patent: 3697324 (1972-10-01), Steele et al.
patent: 4043832 (1977-08-01), Leibig et al.
Noel Deer, "Relation Between Pressure and Compression", Handbook of Cane Sugar Engineering by E. Hugo, second, completely revised, Edition, published by the Elsevier Publishing Company, Amsterdam, 1972, p. 147.

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