Vertical flow packed bed systems
control fumes/gases, are ideal
for gas streams with high loading.
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.
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
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.