SNOX: From clean coal demonstration to mature technology

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

OSTI ID:257122

Wesnor, J D; Borio, D C ^[1]

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1. ABB Environmental Systems, Birmingham, AL (United States)

The SNOX process is a catalytic process for the reduction of sulfur oxides and nitrogen oxides in gaseous streams. The process was developed in Europe by Haldor Topsoe A/S and its affiliate, Snamprogetti; and is offered under license throughout most of the world by ABB Environmental Systems (ABBES) for utility and large industrial boilers. Nitrogen oxides are decomposed to elemental nitrogen and water vapor, and sulfur oxides are converted to commercial grade sulfuric acid--both at very high efficiency. The production of sulfuric acid rather than sludge eliminates the waste disposal problem associated with conventional lime/limestone WFGD systems and also contributes to the low operating cost of the process. Other features of the process which reduce operating costs are the recovery of thermal energy from the flue gas stream and the lack of a reagent requirement for SO{sub 2} removal. Further, the process does not generate secondary sources of pollution such as waste water, slurries or solids. The process operates over a wide range of unit loads and inlet SO{sub 2} and NO{sub x} concentrations with very little effect on removal efficiencies and only minor adjustments to the process controls.

• OSTI ID: 257122
• Report Number(s): CONF-950952--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
COMBINED SOXNOX PROCESSES
COMMERCIALIZATION
DENITRIFICATION
DESULFURIZATION
EFFICIENCY
FLOWSHEETS
FLUE GAS
MATERIALS RECOVERY
NITROGEN OXIDES
OXIDATION
PERFORMANCE
REDUCTION
SULFUR DIOXIDE
SULFURIC ACID
TECHNOLOGY ASSESSMENT
US CLEAN COAL TECHNOLOGY PROGRAM