Mass Transfer from Solid Material in Gas Extraction

Wiley - Tập 88 Số 9 - Trang 887-891 - 1984
Gerd Brunner1
1Verfahrenstechnik II, Technische Universität Hamburg‐Harburg

Tóm tắt

AbstractExtraction rates of substances from solid substrates by supercritical gases have been determined for coffee beans and for rape oil seeds. In case of the indestructed coffee beans an unsteady extraction process prevails, which is determined by the transport of caffeine in the solid material. An approximate solution of the differential equations and a steady state approach are applicable to the long time part of the extraction process. In case of the crushed seeds a steady state mass transfer prevails which can be calculated by mass transfer calculations.

Từ khóa


Tài liệu tham khảo

H.Brauer Stoffaustausch einschließlich chemischer Reaktionen p.607 Sauerländer Aarau1971.

U.Grigull Temperaturausgleich in einfachen Körpern.

E. U.Schlünder Einführung in die Wärmeubertragung Vieweg Braunschweig1981.

Wakao N., 1982, Heat and Mass Transfer in Packed Beds, 156

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Wiley

Tập 88 Số 9

887-891

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