Abstract:
A dryer for drying a liquid feed (11) into a powder (35) comprise a drying chamber (3) defined by a chamber wall (5) including a bottom wall portion (7); a feed inlet for receiving the liquid feed (11) and dispersing particulate feed (13) into the drying chamber (3); at least one air inlet (15) for entering drying air into the drying chamber (3); and at least one drying chamber outlet (17) for dried powder and/or spend drying air from the drying chamber (3). The feed inlet comprises a decanter centrifuge (9) with an axis of rotation (19); a first axial end (21); a second axial end (23); and a solid phase outlet at the first axial end (21).
Abstract:
The powder drying system comprises a powder processing unit (1), and a filter unit (400) defining a central vertical axis (405) and including a filtering chamber (401) accommodating a plurality of bag filters (407), each having a bag filter wall and a top opening, a top portion (402), and an exhaust chamber (403) at or near the top portion (402). The filtering chamber (401) is provided with an inlet (410) configured to allow entry of powder carrying gas to be filtered, and the exhaust chamber (403) has an outlet (420) configured to allow exhaust of filtered gas. In the filtering chamber (401), gas flows through the wall of the bag filters (407), upwards and out through the top opening of the bag filters (407), into the exhaust chamber (403) and further to the outlet (420). the inlet (410) of the filtering chamber (401) is positioned at the top portion (402) of the filter unit (400), and that said inlet (410) includes at least one inlet duct section (415) adjacent the filtering chamber (401) and arranged substantially centrally in the top portion (402) of the filter unit (400).
Abstract:
The invention relates to a drying system (1) comprising a drying plant (2) and a heat pump assembly (3) comprising one or more heat pumps operating with a primary fluid and being connected to at least two heat sources and at least one heat sink by means of a number of heat exchangers in a fluid network, in which a secondary fluid circulates. The heat sources may comprise dew point dehumidification in at least one heat exchanger (41) of process gas entering the drying plant; and recovery in another heat exchanger (42) of latent and/or sensible heat from exhaust gas leaving the drying plant. The heat sink may comprise pre-heating in a heat exchanger (51) of process gas used within the plant. Further, a method of integrating a heat pump assembly into a drying system is devised. By the invention, it is possible to increase the capacity of the drying plant while reducing the specific energy demand.
Abstract:
A powder drying system comprising at least one powder processing unit (1), at filter unit (4) including a plurality of bag filters (7), and a cleaning arrangement (10) including at least one gas nozzle (11) associated to a respective bag filter (7) for cleaning thereof, said nozzle (11) having a nozzle inlet (11i), a nozzle throat (11t) and a nozzle exit (11e), the dimensions of the nozzle including a predefined nozzle inlet diameter (i), a nozzle throat diameter (t), and a nozzle exit diameter (e). The nozzle (11) is provided with a nozzle exit diameter (e) which is larger than the nozzle throat diameter (t) by a ratio in the interval 1.05:1 to 2:1, preferably 1.1:1 to 1.5:1, and even more preferably 1.2:1 to 1.4:1, and most preferred 1.2:1 to 1.3:1.
Abstract:
In the air disperser (4) having a number of components including a top, a bottom and an outer circumferential wall forming a space (45) defined within an inner radius and an outer radius and having an air inlet (81), a set of guide vanes (7), and an air outlet (82) at said inner radius adapted to be positioned above a feed outlet from atomizing means, at least some of said components are formed by precision metal forming such as metal spinning.
Abstract:
The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices ( e.g. , those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for reducing and/or eliminating various liquid discharges from one or more emission control equipment devices ( e.g. , one or more wet flue gas desulfurization (WFGD) units). In another embodiment, the method and apparatus of the present invention is designed to reduce and/or eliminate the amount of liquid waste that is discharged from a WFGD unit by subjecting the WFGD liquid waste to one or more drying processes, one or more spray dryer (or spray dry) absorber processes, and/or one or more spray dryer (or spray dry) evaporation processes.
Abstract:
The nozzle (1) for cleaning-in-place of a vessel hasa nozzle body (2) adapted to be connected to a wall of the vessel and defining an opening (3), anozzle insert (10) is contained within the nozzle body(2) and is ableto assume at least two distinct positions relative to the nozzle body (2). Thus, in a first position, the nozzle insert (10) is retracted into the nozzle body (2) and a front end of the nozzle insert is substantially flush with a front end of the nozzle body (2) at the opening (3) thereof.In a second position, the nozzle insert (10) is advanced in theaxial direction relative to the nozzle body (2) and protrudes, in the mounted position, into the vessel. Aplurality of apertures (12) is exposed in the second positionto allow distribution of a cleaning fluid.The nozzle insert (10) comprises at least two nozzle insert parts(15, 25), and thenozzle insert parts(15, 25)are in mutual abutment in the first position and spaced from each other in a direction transverse to theaxial direction in the second position to form at least one gap (20) between adjacent nozzle insert parts, said apertures (12) being exposed in said gap(20). (Fig. 5)
Abstract:
In the method and apparatus (1) for drying a fluid or wet product, a drying chamber (2), an air inlet, a feed tank (3), and a product recovery system (14) are provided. During operation, a fluid or wet product is fed from the feed tank into the drying chamber at a predetermined flow rate, and finished dried product is fed into the drying chamber at a flow rate corresponding to controllable settings. The fluid or wet product is mixed with the finished dried product in the drying chamber. The mixture of fluid or wet product and finished dried product is dried in a gas containing finished dried product, and the product is recovered from the gas in the product recovery system.