The Tri-NOx{reg_sign}-NoxSorb{reg_sign} Process -- Simultaneous removal of NO{sub x}/SO{sub x} from waste gas streams

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:257121

Kaczur, J J ^[1]; Sprague, M R; Pardell, J M ^[2]

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1. Olin Corp., Charleston, TN (United States). Chlor-Alkali Products Div.
2. Tri-Mer Corp., Owosso, MI (United States)

The Tri-NOx{reg_sign}-NoxSorb{reg_sign} Process is based on an oxidation technology capable of simultaneously removing both NO{sub x} and SO{sub x} from combustion and chemical process waste gas streams at efficiencies up to 99%. The NoxSorb Solution used in the patented process is based on chloric acid, HClO{sub 3}, a new commercial chemical introduced by Olin in 1993. Chloric acid rapidly reacts/oxidizes NO{sub x} and SO{sub x} in both aqueous solution phase and in nearly instantaneous gas phase reactions involving chlorine dioxide, ClO{sub 2}, as a reactive intermediate. Chloric acid has a high oxidizing capacity per mole of NO{sub x}/SO{sub x}. Process NO{sub x}/So{sub x} removal efficiencies are enhanced using wet scrubber designs that achieve high gas/liquid mass transfer rates. An alkaline scrubber stage is used after the oxidation stage to remove any residual acid gases. The by-products from the process system are acids or non-hazardous neutral salts. The process is tolerant to particulates and dirty gas input streams with no catalysts to poison, inactivate, or give reduced performance with time. This paper will detail bench scale and pilot plant work conducted in demonstrating NO removal performance and defining the process oxidation chemistry.

• OSTI ID: 257121
• Report Number(s): CONF-950952--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
BY-PRODUCTS
COMBINED SOXNOX PROCESSES
DENITRIFICATION
DESULFURIZATION
EFFICIENCY
FLUE GAS
NITRIC ACID
NITRIC OXIDE
NITROUS OXIDE
OXIDATION
OXIDIZERS
PERFORMANCE
SCRUBBERS
SULFUR DIOXIDE
SULFUR TRIOXIDE
SULFURIC ACID