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RotaBed® Fluidized Bed Scrubber
Overview:
The patented RotaBed® scrubber represents a major breakthrough in ultra high efficiency gas absorption and particulate collection in a space saving non fouling design. RotaBed is the ideal technology for applications involving particulate laden gas streams or when handling high solids content or scale forming scrubbing liquids.
The key to the RotaBed's superior performance is a unique swirl induced Coriolis grid that achieves much greater fluidized bed stability resulting in more efficient gas mixing and transfer efficiency then less advanced designs. This unique approach to gas- liquid fluidization is accomplished without the need for marbles or plastic spheres that are prone to fouling or replacement due to wear. RotaBed's "packless", highly plug-resistant grid cross section is up to 99% open in the fluid contact scrubbing zone.
RotaBed delivers exceptionally high gas throughput capacity, over three times greater than comparable size packed towers or tray scrubbers for higher scrubbing efficiency in a smaller diameter vessel.
How it Works:
During operation, gas with contaminants enters the RotaBed gas Inlet (1) and flows upward. Scrubbing liquid is introduced through fully open non-clog pipe distributors (2) onto the surface of the patented RotaBed Coriolis induced fluidizing grid (3). Single or multiple grid stages are incorporated depending on the number of transfer units required to meet the needed pollutant removal efficiency. The high velocity gas travels in an angular upward path and fluidizes the liquid on the large open area grid surface. Unlike low efficiency static plug flow fluidized beds, the RotaBed shaped grid design utilizes swirl inducing vanes (4) to dramatically increase mass transfer and particulate collection via creation of a rotating Coriolis motion fluidized bed (5). Scrubbing liquid with captured pollutants vortex drains (6) into the sump (7).
The RotaBed cleaned gas passes through a two stage droplet removal stage (8) and exits through the gas outlet (9).
Available Materials of Construction:
- Mild Steel, 304, 316 and AL6XN Stainless Steels, High Nickel Alloys, Titanium FRP, FRP – Dual Laminate, Polypropylene
Capacity Size Range (Gas Handling Capacity):
Pressure Drop Range:
Contaminant Removal Efficiencies:
- Particulate removal: 3 microns and above from 97 to over 99.9%
- Water soluble gases up to 99.99%
Typical Applications include:
- Gaseous and particulate contaminant removal from processing operations in the chemical, pharmaceutical, pulp & paper, semiconductor, fertilizer, minerals, petroleum, and food industries
- Acid gas removal from high temperature thermal oxidizers
- Chlorine dioxide and sulfur dioxide removal in pulp and paper bleach plants
- Acid and alkali fume removal from pickling, galvanizing, and cleaning lines including HCL regeneration plants in the metals industry
- Odor control and VOC removal from process operations, product dryers, and waste treatment operations
- Flue gas desulfurization using limestone, lime, and soda ash chemistries at power generation facilities
- and many others
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