Tri-NOx Multi-Chem Wet Scrubber

Case Study of Our NOx Scrubber in a Hydroprocessing Plant

Criterion Catalyst Co. L.P. is the world's largest supplier of catalysts for hydroprocessing,
including hydrotreating applications. The company is also a leading supplier of reforming and
specialty catalysts for the refining industry.

Criterion's facility in Azusa, CA installed a Tri-NOx Mult-Chem scrubber with a 3000 cfm capacity at
250 lbs./hr. of NOx. The system has four polypropylene columns, three of which form the scrubbing
portion of the system and use Tri-Packs column packing. A stainless steel quenching column cools
catalyst process offgases from 500 to 150° F.

The scrubber uses an irreversible process involving proprietary solutions and chemistries.
Residence time of NOx is minimal, based on the high NOx loading relative to the NO/NO2 ratio.
The system operates at greater than 99% efficiency on both NO and NO2 and the stack is clean.
No harmful liquid byproducts are generated by the system: the only liquid effluent contains a
small amount of soluble salt that is processed by the facility's waste treatment system.

For NOx brochure, click here.

CASE STUDY #1:  Tri-NOx® Multi-Chem Wet Scrubber. 
Case study of our NOx scrubber in a plastics resin plant.

CASE STUDY #2:  Tri-NOx® Multi-Chem Wet Scrubber. 
Case study of our NOx scrubber in an automotive manufacturing plant.

CASE STUDY #4:  Pharmaceutical manufacturer turns NOx regulations into an opportunity –
with a 6-figure annual chemical savings as a bonus.

TRI-NOX / CASE STUDY 1 / CASE STUDY 2 / CASE STUDY 3
CASE STUDY 4 / TRI-NOX SPECIFICATIONS

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