Method and device for drying goods

摘要

By means of the invention, a method and an apparatus (1) for the drying of goods, in particular for the convection drying of pastas, which are introduced from a first treatment zone (2) into a second treatment zone (3), are to be improved to the effect that the drying process has a lower energy consumption than conventional dryers and the surroundings of the dryer (1) are polluted only slightly by waste heat. Furthermore, the dryer (1) is to be designed in a structurally simple and cost-effective way. This object is achieved by means of a method for the drying of goods, in which the temperature in the first treatment zone (2) is on average lower than in the second treatment zone (3), and in which the energy obtained from the exhaust air of the first and/or the second treatment zone (2, 3) in at least one heat exchanger (6, 7, 8, 9, 10, 11) is introduced into the first treatment zone (2).

主权项

1. A pasta convection-drying apparatus comprising:
at least two treatment zones through which pasta is transported; at least one inner heat exchanger in at least a first of the treatment zones; and at least one outer heat exchanger; wherein the apparatus is configured such that exhaust air from the first of the treatment zones is supplied at least partially into a second of the treatment zones; and wherein the at least one inner heat exchanger is connected with the at least one outer heat exchanger such that energy obtainable from at least one of the treatment zones via the outer heat exchanger can be introduced into at least the first of the treatment zones, whereby drying condition parameters are selectable such that temperature and relative moisture of drying air may be controlled, such that, during operation, at least the surfaces of pasta which is being dried remain in a rubber-like state during convection drying of the pasta, the apparatus further comprising a plurality of inner heat exchangers arranged in series and configured such that, in operation, a fluid flows through the plurality of inner heat exchangers in a direction counter to the direction of pasta transportation.