Arrangement for roasting vegetable bulk material, such as coffee

Details Arrangement for roasting vegetable bulk material, such as coffee Arrangement for roasting vegetable bulk material, such as coffee

1996-05-31

1998-02-17

Simone, Timothy F.

Foods and beverages: apparatus

Cooking

With other treating or handling of material

34134, 34138, 34360, 99447, 99470, 99476, 99483, A23L 100, A47J 2700, A47J 3700, F26B 1100

Patent

active

057181640

ABSTRACT:
An apparatus for roasting vegetable bulk material, in particular coffee beam is disclosed, in which essentially all of the cooling waste air of a cooler which cools the bulk material after the roasting operation is heated to roasting-gas temperature in a heat-exchanger stage and fed to the roaster. Essentially all of the roasting waste gases are heated, in a heating stage, to an extent which is necessary for increasing the temperature of the cooling gases to the roasting-gas temperature. Since the roaster operates with a higher roasting-gas throughput than hitherto, it is possible, with comparable roasting capacity, for the roasting-gas temperature to be reduced, this resulting in a more uniform roasting result. The apparatus has reduced harmful-substance emission along with increased thermal efficiency. Also disclosed is a method of roasting and cooling bulk material by utilizing the disclosed apparatus.

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