Abstract:
An indirect-heat thermal processor for processing bulk solids includes a housing including an inlet for receiving the bulk solids and an outlet for discharging the bulk solids and a plurality of heat transfer plate assemblies disposed between the inlet and the outlet and arranged in spaced relationship for the flow of the bulk solids that flow from the inlet, between the heat transfer plate assemblies, to the outlet. The heat transfer plate assemblies include a heat spreader, a heating element disposed adjacent the heat spreader, a temperature detection device spaced from the heating element and disposed adjacent the heat spreader, covers disposed on opposing sides of the heat spreader, the heating element, and the temperature detection device to provide a sandwiched assembly in which the heat spreader, the heating element, and the temperature detection device are sandwiched between the covers, heating element couplings coupled to the heating element and extending from the sandwiched assembly for controlling the heating element, and a connector coupled to the temperature detection device and extending from the sandwiched assembly for monitoring a temperature at the temperature detection device.
Abstract:
The device for washing sticks (C) for the transport of long-cut pasta comprises at least one nozzle (25) generating a jet of dry ice particles directed against the surface of the sticks in the device.
Abstract:
Ein Trockner (1) zum Trocknen von Gegenständen, insbesondere von lackierten Fahrzeugkarosserien oder Anbauteilen, umfasst in bekannter Weise innerhalb eines Trocknergehäuses (2) einen Trocknerraum (11), in dem eine Innenatmosphäre mit einer gegenüber der Außenatmosphäre erhöhten Temperatur vorliegt. Eine Einlassschleuse (7) sowie eine Auslassschleuse reduzieren das Einströmen der Außenatmosphäre in den Trocknerraum (11) und das Ausströmen der Innenatmosphäre in die Außenatmosphäre. Die Einlassschleuse (7) umfasst einen sich über die gesamte Breite der Einlassschleuse (7) erstreckenden, von unten nach oben verlaufenden ersten Luftvorhang (8) sowie in Bewegungsrichtung der Gegenstände hinter dem ersten Luftvorhang (8) einen zweiten, sich über die gesamte Breite der Einlassschleuse (7) erstreckenden, von oben nach unten verlaufenden Luftvorhang (9). Die Auslassschleuse ist im Wesentlichen identisch mit der Einlassschleuse (7) ausgebildet, wobei jedoch die Gegenstände zuerst einen von oben nach unten gerichteten und dann einen von unten nach oben gerichteten Luftvorhang durchlaufen. Das Fördersystem ist dabei vorteilhafterweise so ausgebildet, dass die Gegenstände kontinuierlich und durch das gesamte Trocknergehäuse (2) hindurch auf im Wesentlichen konstanter Höhe bewegt werden. Dieser Trockner (1) ist kostengünstiger in der Herstellung und im Betrieb als herkömmliche Trockner, die als A- Schleusen verwenden.
Abstract:
Un système de (re-)séchage de pièces de bois en continu. Un arrangement convoyeur reçoit et transporte les pièces de bois à la file suivant un trajet. Une teneur en humidité de chaque pièce de bois voyageant sur l'arrangement convoyeur est mesurée durant le trajet. Les pièces de bois dont les teneurs en humidité mesurées sont supérieures à une teneur cible sont dérivées vers un équipement de séchage, notamment par haute fréquence, tandis que les autres pièces de bois poursuivent leur trajet sur l'arrangement convoyeur. L'équipement de séchage enlève une partie d'humidité des pièces de bois dérivées. Les teneurs en humidité des pièces de bois traitées sont à nouveau mesurées. Les pièces dont les teneurs en humidité sont descendues sous la teneur cible sont acheminées vers l'arrangement convoyeur alors que les autres pièces sont acheminées dans l'équipement de séchage pour un re-séchage.
Abstract:
A microwave applicator assembly includes a microwave applicator that excites TE modes and provides a generally circular heating pattern in a lossy dielectric material. The microwave applicator has a processing chamber bounded by a circumferential wall in which a plurality of indents are formed. The microwave applicator assembly may further include a feed waveguide coupled to the microwave applicator for inputting microwaves into the processing chamber. The microwave applicator assembly may further include one or more choking sections in communication with the processing chamber to enhance heating efficiency and reduce microwave leakage.
Abstract:
The invention concerns a method for the dynamic control of the drying period in a drying tunnel that works with an outwardly enclosed drying pathway (1) through which wood in the form of batches (4:2-4:n) is fed forwards at regular intervals, known as the "throughput time", such that a batch of wood (4:0) with its load of moist wood are fed into the pathway at the same time as a batch of dried wood (4:n) and with a moisture ratio (Θn) that has been achieved and that is located at the innermost extent of the drying pathway is fed out from the pathway. The method is characterised in: that the final moisture ratio (θn) for a batch of wood (4:n) located at the innermost extent of the pathway (1) is determined by measuring the moisture ratio of the batch of wood, that the measurement of moisture ratio is carried out directly in the drying pathway, that the final moisture ratio (θn) is compared with the target moisture ratio (Θn) for the batch of dried wood, that withdrawal is carried out if the final moisture ratio (θn) is less than or equal to the desired target moisture ratio (Θn) for the batch of wood.
Abstract:
The invention relates to a method for drying piles of wood (3), said wood being dried, during a step-by-step transport of the piles through a drying channel (2) by means of drying gas flows flowing in opposite directions in successive drying regions (4, 5, 6, 7), until an ultimate humidity below the fibre saturation is reached, the pile depth of the drying regions, determined by the number of successive wood piles (3) in the direction of transport (8), increasing in the direction of transport. In order to achieve a uniform ultimate humidity with a comparably low energy consumption and advantageous drying rates, in spite of different starting humidities, the wood is dried in two drying regions (4, 5) on the input side at least essentially with fresh gas supplied between said drying regions, until a humidity content in the fibre saturation range is reached, but essentially above the saturation of the fibres, and then in at least one other drying region (7) by means of a drying gas flow at least partially guided in the circuit and adjustable in terms of the temperature and the humidity thereof, until an ultimate humidity is reached.
Abstract:
Disclosed is an apparatus and method for the uniform drying of boards, such as gypsum wallboards. The apparatus includes a dryer through which a series of boards are conveyed in a side-by-side relationship. While in the dryer, heated air is delivered over the boards via a series of separate air channels. A bypass duct delivers a portion of or a totality of unreheated air to the outermost channels where the cooler air displaces a volume of the warmer air. As a result, the air in the outermost channels is cooler than the air in the interior channels. Air from the outermost channels is then directed over the exposed longitudinal edges of the boards.
Abstract:
Die Erfindung betrifft ein Verfahren zum Trocknen von Wasser beinhaltenden, vorzugsweise plattenförmigen Produkten in einem Durchlauftrockner in Mehretagenbauweise und einen solchen Trockner zur Durchführung des Verfahrens. Die Erfindung stellt darauf ab, in einem Trockner der oben genannten Art unterhalb der Umhausung (2) gestaute Feuchtluft abzusaugen und in den Saugbereich (12) der in den unteren Etagen angeordneten Axiallüfter (9) zu transportieren und daraufhin einer Menge Trocknungsluft Feuchtluft differenziert zuzumischen und den Düsenkästen (5) des Trockners zuzuführen.
Abstract:
The invention relates to a radiation appliance (21) and a powder applying station (4), an arrangement thereof for powder-coating temperature-sensitive materials, such as derived timber products and MDF panels (8), and an associated method. The inventive arrangement and method are characterised in that the specific geometry of the radiation appliance (21) or the corresponding mode of operation enables a short but sufficient homogeneous radiation action over the surface of the substrate (8) to be coated, without the core temperature of the substrate exceeding a critical value. Said arrangement comprises a grinding station (1), a flame treatment station (2), a spray station (3), a powder application station (4), a radiation appliance (5), and a hardening/cross-linking region (6) that can preferably be continuously passed through. The inventive radiation appliance (21) is characterised in that the radiating elements are displaceably arranged in an annular or circular manner, while the powder application station (4) is provided with derivation elements which are used to smooth the electrical field on the surface of the substrates and thus prevent concentrations of powder on edges and the like.