Floating / Fluidized Bed Scrubber
Floating / Fluidized Bed Scrubber
One of the most promising and effective filters for complex dedusting, waste- and exhaust gas cleaning is fluidized bed scrubber, (also sometimes referred to as mobile- / moving-bed absorber). Due to the significant flexibility in form-factors, sizes and performances, such devices can be profitably used in any branch of modern industry.
Floating bed scrubbers demonstrate high efficiency in the context of complex purification of gas / air flows polluted with both fine-mechanical and chemical contaminants. This option is especially much-in-demand in those industrial areas where thermal decomposition and / or combustion of organic matter and hydrocarbon fuels takes place: power plants, boiler houses, asphalt concrete plants, oil refining, waste incineration plants.
In terms of design, the apparatus is (most often, but not necessarily) a vertical hollow tower, the interior of which contains a chamber filled with lightweight hollow balls (or several compartments at different heights).
With regard to the principles of operation of the mobile-bed scrubber, the gas (or air) flow passes bottom-up along the tower and encounters a highly turbulent multi-phase “obstacle” in the form of a fluidized bed (see video below).
FBS for complex gas, aerosol and dust capture (this model of scrubber was produced at our company for bitumen concrete plant)
More precisely, the upward flow proper forms a mobile layer of the filling, lifting the bed, while the nozzles spray water (or reagent) on top of the bed bodies, thereby counterbalancing the opposing forces and making the filling float, levitate over the tray.
In these conditions, when the actions of the reverse-direction forces are accurately balanced, solid bodies begin to behave like a liquid, forming a chemically and mechanically active inter-phase surface, in which a wide spectrum of pollutants of physical and chemical nature is absorbed.
Own-conducted researches and experiments show, hollow polypropylene balls are the ideal choice for an absorption- and scrubber columns with floating bed. Firstly, PP has good resistance to abrasion, and secondly, it is chemically inert, which allows its use even when processing acidic or alkaline fumes / aerosols. Among other things, hollow spheres have low weight, which improves the circulation properties of the fluidized filling.
This demo stand of FBS working compartment vividly depicts the "boiling" of PP balls inside the absorbent
Floating bed scrubber schematics. Please take into account that this very schematics shows only one of the several types of manufacturing of the fluidized bed scrubber and the relative position of its functional units. We approach each Order with an exceptional individuality, so a device made in accordance with Your specific technological needs may look a little different.
Table of gas-handling amounts and their dependance on scrubber dimensions (reference data)
|Gas handling capacity, m3 / h||Reference dimensions, mm|
The full equipment package includes:
For any questions regarding the individual design / modelling, manufacture and purchase of industrial dedusting, air filtration and gas cleaning equipment, please contact us in the way that is convenient for you or fill out a Customer’s questionnaire.
We are ready to quickly and carefully deliver a single unit (or a multistage air scrubbing plant) to any region in Europe and Asia.
If necessary, the engineers of PZGO LLC can assembly install and put the equipment into operation within a turnkey basis. Feel free to contact us any time.
PZGO LLC – breathe with ease!