Denitrification and desulfurization of combustion gases. Quarterly technical progress report No. 7, March 18-June 17, 1982

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6334370

Desai, N J; Li, H C; Yang, R T

This program was initially designed for developing new and more efficient processes for the removal of SO/sub 2/ and NO/sub x/ from hot combustion gases. For SO/sub 2/ removal, the goal was to develop, on a laboratory scale, the Fe/sub 2/O/sub 3/ catalyzed fluidized bed combustion process. For the NO/sub x/ removal, it was intended to develop a two-step process for NO/sub x/ decomposition to form N/sub 2/, with a low-cost sorbent/catalyst and with no NH/sub 3/ injection. The study on the iron oxide catalyzed sulfation of limestone has been completed. Based on our kinetic (TGA) data, the Lee-Georgakis model predicts that an 1% Fe/sub 2/O/sub 3/ coating on Tymochtee dolomite would reduce the lime requirement by about 30 to 40% for 90% sulfur retention for a typical FBC operation. This new process holds considerable economic promises and is ready and recommended for further pilot-scale development. We have had some success with the sodium ferrite sorbent/catalyst in the two-step NO/sub x/ decomposition process. However, Fe/sub 2/O/sub 3/, which was used as the catalyst for NO decomposition, is not among the best catalysts. Copper oxide is known to be about two orders of magnitude more efficient as Fe/sub 2/O/sub 3/. And more important, Cu(SO/sub 4/)/sub 2/, which will be formed from CuO in a combustion gas, is as efficient as CuO as a catalyst in NO decomposition. Based on the above reasons, we have been studying CuO containing materials as the sorbent/catalyst. In some of the materials, such as CuO supported in a matrix of a cement and mixed CuO and CaO, have shown that about 40% of the NO originally absorbed can be decomposed into N/sub 2/ in the regeneration step. We are now narrowing down the specific CuO containing sorbent which is best in fulfilling all the aforementioned requirements. 8 figures.

• Research Organization: State Univ. of New York, Buffalo (USA). Dept. of Chemical Engineering
• DOE Contract Number: AC22-80MC14617
• OSTI ID: 6334370
• Report Number(s): DOE/MC/14617-T1; ON: DE85004212
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
ABSORPTION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BENCH-SCALE EXPERIMENTS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COPPER COMPOUNDS
COPPER NITRATES
COPPER OXIDES
DATA
DECOMPOSITION
DENITRIFICATION
DESULFURIZATION
DOLOMITE
ELEMENTS
EXPERIMENTAL DATA
FERRIMAGNETIC MATERIALS
FERRITES
FLUE GAS
GASEOUS WASTES
HIGH TEMPERATURE
INFORMATION
IRON COMPOUNDS
IRON OXIDES
LIMESTONE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
MINERALS
NITRATES
NITRATION
NITROGEN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
REGENERATION
REMOVAL
RESEARCH PROGRAMS
ROCKS
SEDIMENTARY ROCKS
SODIUM COMPOUNDS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
WASTES
YIELDS