Tri-Mer Air Pollution Control Systems

- Packed Bed Tower Scrubber Systems



Tri-Mer vertical packed bed tower scrubber systems are ideal for the efficient removal of inorganic gases, odors, and fumes. They are well-suited as primary or secondary systems in conjunction with thermal oxidizers, and are used in a series where there are multiple-contaminant gas streams. Packed tower scrubbers are suitable for chemical processes, metal finishing, semiconductor manufacturing and other industrial operations generating fumes and gases. Optimum performance is achieved with systems that combine intimate gas/liquid mixing and low pressure drop.

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:

  1. Contaminant flow composition
  2. Contaminant solubility
  3. Chemistry that will react with contaminants
  4. Reaction speed
  5. HTU (height transfer unit) factors required for specified removal efficiency (packing depth)
  6. Liquid-to-gas ratio
  7. Velocity
  8. Gas temp. - up to 2000°F with Q-Scrub quench option

Design Considerations include:

  • CFM
    Volumetric airflow rate through the scrubber, generally expressed in cubic feet per minute (CFM). This is determined by the process to be handled by the scrubber, information provided by customer and Tri-Mer’s analysis. System capacities range to 100,000 cfm and above.
  • Configuration
    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, and service platform requirements all influence layout.
  • Materials:
    Standard materials are polypropylene, fiberglass and PVC. Optional materials include high alloy metals such as stainless and Hastelloy®. Dual-laminate structures incorporating FRP over PVC, PP, PVDF and Teflon® liners are available.

Read how Tri-Mer chemical storage tank (CST) scrubbers use Tri-Packs and packed bed scrubber technology to eliminate fumes and gases from the venting of bulk storage tanks.

Also from Tri-Mer, Tri-Packs Tower Packing, delivering superior wetting efficiency!

Tri-Packs tower packing provides maximum surface contact between gas and the scrubbing liquid by facilitating continuous formation of droplets throughout the packed bed. This results in high scrubbing efficiency and minimizes packing depth.

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