摘要:
Verfahren zum Betrieb einer Trocknungsanlage für feuchtes Holz und vergleichbare Bio-Materialien, bestehend aus mindestens einer Trocknerkammer (17) mit einem Materialeintrag (24, 25, 26) für das zu trocknende Material , in der mindestens ein bewegbar angetriebener Trockner (2) angeordnet ist, der ein Materialbett (30) für das zu trocknende Material ausbildet, das mindestens von einem von einer Feuerung (1) abgeleiteten Heissgas (55) durchsetzt ist, wobei stromabwärts der Feuerung (1) das von der Feuerung (1) erzeugte Heissgas (55) zunächst in eine Mischkammer (11) eingeleitet wird, in welche ein aus der Ausgangsseite der Trocknerkammer (17) entnommener Abgasstrom über eine Rezirkulationsleitung (7) zugeführt wird und dass der in der Mischkammer (11) erzeugte, abgekühlte Mischluftstrom in den Trockner (2) eingespeist wird.
摘要:
A process and plant for drying of wood shavings, wood chips or other solid materials of organic and/or mineral origin in small pieces, in which - the material is predried by means of a first preheated drying gas in a first drying step, - the dried material from the first drying step is dried by means of a second preheated drying gas in a second drying step, - ambient air is heated and supplied as second preheated drying gas to the second drying step, - the dried material from the second drying step is cooled by means of a cooling gas, and - the cooling gas heated by cooling of the material and/or the second drying gas cooled in the second drying step is supplied as first drying gas to the first drying step.
摘要:
An apparatus, a system, and a method for heat treating a moisture-containing or water-laden material are provided. The heat treatment can be drying for dehydration, gasification, or full carbonization. The system comprises a feeding mechanism, and a rapid compression unit (RCU) apparatus having a screw, a barrel, and one or more flow disrupters. The system can further include a reflux condenser, an aftercooler stage, a second condenser for particle filtering, and an exit mechanism. The one or more flow disrupters are located on an inner surface of the barrel and project into the passageway created by the screw and the barrel. The screw is sized to fit within the barrel such that flow disrupter does not contact the screw. The one or more flow disrupters cause the water-laden material to fold over onto its self, thereby, allowing for the occurrence of more uniform drying.
摘要:
Provided is an indirectly heating rotary dryer which has achieved enhanced energy-saving performance by reducing heating tubes non-contacting with material to be dried and reducing power required for rotation even when a hold up ratio is increased. Specifically provided is an indirectly heating rotary dryer having four partition walls 16 extended respectively along an shaft center C in an inner space of a rotating shell 10 at angle intervals of 90 degrees in the vertical and horizontal directions. The four partition walls 16 partition the inner space of the rotating shell 10 at a lateral section of the rotating shell 10 into four approximately-sector-shaped small spaces K respectively extended along the shaft center C. Heating tubes 11 are aligned in the rotating shell 10 in three lines extended respectively in parallel to the shaft center C of the rotating shell 10. The heat tubes 11 heat and dry the material H to be dried by supplying heated steam to the heating tubes 11 and performing heat exchange with the material H to be dried in the rotating shell 10.
摘要:
The invention relates to a drying apparatus (1) for drying bulk material comprising -a closed circulation conduit (4) being adapted to be filled with a drying medium when said drying apparatus is in operation -a fan (12) connected into said closed circulation conduit for generating a flow of drying medium, -heating means (13) connected to the fan (12) for indirectly heating the drying medium, -inlet feeding means (6) connected to said closed circulation conduit (4) for feeding bulk material into the closed circulation conduit, -a drying enclosure (7) connected to the inlet feeding means (6) wherein said bulk material is dried by transfer of thermal energy from said drying medium, -separating means (8;8') connected to the drying enclosure (7) for separating bulk material from said drying medium, -a surplus steam outlet (14) connected to said closed circulation conduit (4) for releasing surplus steam (10), wherein said separating means (8) comprise a plurality of cyclones (8a-d;8'a-d). The present invention also relates to a process for drying bulk material using said drying apparatus and to the use of said drying apparatus to dry wood based bulk material or agricultural based bulk material. The present invention also relates to a combined heat and power plant comprising said drying apparatus.
摘要:
A tray dryer is provided that has tray stack with trays that rotate about an axis. A material leveler is stationary with respect to the rotating trays and has a leveling surface that engages the product. The material leveler has a plurality of prongs that engage the product and that in combination with the leveling surface form a series of rows in the product on the upper surface of one of the trays. The material leveler does not function to hold the product for transfer to a subsequent tray of the tray stack.
摘要:
The invention relates to a drying apparatus (1) for drying bulk material comprising -a closed circulation conduit (4) being adapted to be filled with a drying medium when said drying apparatus is in operation -a fan (12) connected into said closed circulation conduit for generating a flow of drying medium, -heating means (13) connected to the fan (12) for indirectly heating the drying medium, -inlet feeding means (6) connected to said closed circulation conduit (4) for feeding bulk material into the closed circulation conduit, -a drying enclosure (7) connected to the inlet feeding means (6) wherein said bulk material is dried by transfer of thermal energy from said drying medium, -separating means (8;8') connected to the drying enclosure (7) for separating bulk material from said drying medium, -a surplus steam outlet (14) connected to said closed circulation conduit (4) for releasing surplus steam (10), wherein said separating means (8) comprise a plurality of cyclones (8a-d;8'a-d). The present invention also relates to a process for drying bulk material using said drying apparatus and to the use of said drying apparatus to dry wood based bulk material or agricultural based bulk material. The present invention also relates to a combined heat and power plant comprising said drying apparatus.
摘要:
Es wird ein Verfahren zur Trocknung von Schüttgut, Insbesondere von Holzfasern und/oder Holzspänen vorgeschlagen, wobei das Schüttgut in einem Trockner (1), insbesondere einem Trommeltrockner, kontinuierlich getrocknet wird. Das Dampf-Gas-Gemisch durchläuft den Trommeltrockner (1) in einem Trocknerkreislauf und wird indirekt durch ein in wenigstens einem Brenner (5) erhitztes Brennerabgas über wenigstens einen Wärmetauscher (4) erwärmt. Die Trocknungsbrüden werden dem wenigstens einen Wärmetauscher (4) zugeführt. Vor, nach und/oder innerhalb des wenigstens einen Wärmetauschers (4) wird wenigstens ein Teilstrom der Trocknungsbrüden zur Einleitung in den Brenner (5) abgezweigt. Der verbleibende Teilstroms wird erneut dem Trockner (1) zugeleitet. Der Teilstrom der Trocknungsbrüden zum Brenner (5) wird über wenigstens einen regelbaren Teilbrüdenventilator (10) angetrieben.
摘要:
The invention relates to a method and a device for the fluidised-bed roasting and grinding of a load mainly containing a biomass in order to feed the same into a unit for the gasification or combustion of said load.