Abstract: A continuous granulator comprises a longitudinal granulation chamber having a first end with an inlet for powder material and a binder feed port and a second end with an outlet for granulated product. The granulation chamber comprises at least two parallel rotary shafts provided with granulating elements and forming an angle of from 0 to 70 degrees with the vertical. Each granulating element on a shaft comprises at least one lobe having limited extent in the circumferential direction of the shaft and interleaving with a lobe of a granulating element on another shaft. A plurality of such separate granulating elements are distributed from the inlet to the outlet, and successive granulating elements on a shaft are mutually angled.

Abstract: The air disperser (1) includes an air inlet (2), a pipe (3) defining an air outlet area equipped with one or more atomizers (4), an outer wall (7) and a space (8) defined by the pipe wall (9) and the outer wall (7) of the air disperser. The space (8) has a plurality of guide vanes (10a-10l) positioned substantially vertically in the axial direction and substantially on the radii between the pipe wall (9) and the outer wall (7) of the air disperser. At least one (10e) of the guide vanes is covering at least 90% of the full radius from the pipe wall (9) in the direction towards the outer wall (7) of the air disperser, and the rest of said guide vanes being distributed on radii along the circumference of the pipe (3).

Abstract: The invention relates to a method and apparatus for producing substantially monodisperse micro particles mainly of heat sensible material using a carrier gas and a drying gas. Relatively dense micro particles with diameters in the range 1-120 ?m with a very narrow span can be obtained.

Abstract: A fluid bed apparatus module (1) comprises an outer wall enclosing a processing chamber (9) and has a lower flange connection (4) and an upper flange connection (5), the lower flange connection being adapted to connection with a flange connection (14) of a supply of fluidising gas, and the upper flange connection being adapted to connection with a flange connection (17) of a filter chamber (18) for gas discharge. At least one partition element (6) is arranged in the processing chamber, so that at least one elongated channel is formed in the processing chamber, thereby defining a plug-flow area, and at least one substantially continuous product inlet (10) and at least one substantially continuous product outlet (11) are arranged in the module. Furthermore, a method comprises changing a first module for a second module in a fluid bed apparatus.

Abstract: The air disperser (1) comprises an air inlet (2), a pipe (3) defining an air outlet area equipped with one or more atomizing means (4), an outer wall (7) and a space (8) defined by the pipe wall (9) and the outer wall (7) of the air disperser. The space (8) has a plurality of guide vanes (10a-10l) positioned substantially vertically in the axial direction and substantially on the radii between the pipe wall (9) and the outer wall (7) of the air disperser. At least one (10e) of the guide vanes is covering at least 90% of the full radius from the pipe wall (9) in the direction towards the outer wall (7) of the air disperser, and the rest of said guide vanes being distributed on radii along the circumference of the pipe (3).

Abstract: A continuous granulator comprises a longitudinal granulation chamber having a first end with an inlet for powder material and a binder feed port and a second end with an outlet for granulated product. The granulation chamber comprises at least two parallel rotary shafts provided with granulating elements and forming an angle of from 0 to 70 degrees with the vertical. Each granulating element on a shaft comprises at least one lobe having limited extent in the circumferential direction of the shaft and interleaving with a lobe of a granulating element on another shaft. A plurality of such separate granulating elements are distributed from the inlet to the outlet, and successive granulating elements on a shaft are mutually angled.

Abstract: A fluid bed apparatus module (1) comprises an outer wall enclosing a processing chamber (9) and has a lower flange connection (4) and an upper flange connection (5), the lower flange connection being adapted to connection with a flange connection (14) of a supply of fluidising gas, and the upper flange connection being adapted to connection with a flange connection (17) of a filter chamber (18) for gas discharge. At least one partition element (6) is arranged in the processing chamber, so that at least one elongated channel is formed in the processing chamber, thereby defining a plug-flow area, and at least one substantially continuous product inlet (10) and at least one substantially continuous product outlet (11) are arranged in the module. Furthermore, a method comprises changing a first module for a second module in a fluid bed apparatus.

Abstract: A process and an apparatus for agglomeration of powders wherein the powder is brought into contact with an agglomeration fluid while being air-borne and collected on a surface all parts of which are moving at substantially the same speed, after which the agglomerated powder is moved away from the moving surface by means of a centrifugal acceleration of at least 50 m/s2.

Abstract: In a compact combined spray drying and after-treatment apparatus having internal gas filters and an internal fluidized bed in the drying chamber and a fluidized bed in the after-treatment zone, pipe means are used for conducting a stream of particle-loaded gas formed in the after-treatment zone to suitable locations in the drying chamber without disturbing the normal operation of the drying chamber and the fluidized bed therein.

Abstract: A moist non-rewetted particulate material obtained from an extract of e.g. coffee by drying, is subjected to a heat treatment being carried out without affecting the moisture content of the particulate material at a combination of temperature and time being adequate for effecting fusion so as to form a compact cake-like structure, which is disintegrated into granular material before drying to final moisture content, whereby fines may be separated without being subjected to final drying, and recirculated in the process. Hereby a product having an appearance similar to and a quality comparable to or better than that of freeze dried coffee can be obtained in a less expensive manner.

Abstract: In a spray drying process utilizing a spray dryer having internal gas filters and an internal fluidized bed and comprising an after-treatment of the product in a separate unit outside the spray drying chamber, which treatment produces a particle-loaded gas stream, said particle-loaded gas stream is conducted from the separate unit to the spray drying chamber. The stream passes, together with the spent drying gas in the drying chamber, the filters integrated in said chamber. Several plant modifications are suggested for performing the process which involves substantial savings by making external particle collectors superfluous.

Abstract: A filter unit for filtering gas has at least one filter element with an outlet opening. A filter cleaning nozzle is located in a clean-gas chamber at a distance from the outlet opening and is connected to a source of pressurized primary cleaning gas via a control valve. Primary cleaning gas is ejected from an annular slot and along the outer side of a guide body located in the clean-gas chamber. The guide body is open to the secondary gas in the chamber.

Abstract: Spray drying is performed at increased pressure whereby advantages are obtained as to product characteristics and production capacity. Particulate materials of an amorphous structure and non-dusting high-bulk density powders can be obtained.

Abstract: In an apparatus for drying a moist material in a stream of drying gas the residence time is increased by inserting one or more perforated plates, above which fluidized particle layers are created, and through which a portion of the drying gas and material to be dried are passed, whereas the remaining part of the drying gas and material is by-passed said perforated plates. Improved drying capacity, heat economy and operational flexibility and decreased risk for heat damage of the material to be dried are obtained.

Abstract: The invention relates to a method and an apparatus or system for evaporating liquid and comprises spray drying, spray concentration and conditioning (i.e. cooling and/or moistening) of combustion gas or flue gas. Liquid is atomized or sprayed into an evaporating chamber from a liquid spraying or atomizing device arranged centrally in the upper part of the evaporating chamber, and an unobstructed coherent flow of warm gas, such as combustion gas or flue gas is simultaneously directed substantially axially into the evaporating chamber and upwards towards the atomizing device.