Vertical Flow Packed Bed Systems
Control Fumes / Gases, are Ideal
for Gas Streams with High Loading
Tri-Mer packed scrubbers are highly recommended for the prevention and efficient removal
of inorganic gases, odors, and vapor fumes. They are well-suited for use as primary or
secondary systems in conjunction with thermal oxidizers, and are also used in a series
where there are multiple-contaminant gas streams. Vertical Flow Scrubbers are suitable
for chemical processes, metal finishing process, semiconductor manufacturing and dozens
of other industrial operations generating fumes and gases. View our 8 page Packed Bed
Tower Scrubber Brochure as an Acrobat pdf file.
Optimum system performance is achieved with systems that combine intimate
gas/liquid mixing and low pressure drop.
There are several factors which influence the design of these systems:
Air flow through the scrubber, based on cubic ft/min. This is determined by the process to
be handled by the scrubber, through information provided by customer and Tri-Mer analysis.
System capacities of heavy service range to 100,000 cfm and above.
Internal vs. external recirculation system, fan location in relation to tower, duct sizes,
inlet and outlet plus location of pump systems, tower access service ports, service
platform requirement all influence layout. Standard construction materials include:
polypropylene, fiberglass and PVC. Optional materials include high alloy metals
such as stainless and Hastelloy®. Also dual-laminate structures incorporating
FRP over PVC, PP, PVDF and Teflon® liners are available.
Removal efficiency of scrubber: inlet vs. outlet requirement,
based on mass emission in lbs/hr. in vs. lbs./hr. out.
Factors to consider in calculating removal efficiency are:
- contaminant flow composition
- contaminant solubility
- chemistry that will react with contaminants
- reaction speed
- HTU (height transfer unit) factors required for specified removal efficiency (packing depth)
- liquid-to-gas ratio
- gas temp. – up to 2000°F with Q-Scrub quench option
PRODUCING A PRACTICAL SYSTEM DESIGN
Using this information and other factors specific to the site, Tri-Mer engineers determine
the optimum tower diameter, packing depth, recirculation flow rate, and mist eliminator
requirement. These calculations form the basis for a layout similar to the above photograph.
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