Evaluation of innovative combustion technology for simultaneous control of SOx and NOx. Final report, October 1984-September 1985

Technical Report · Wed Apr 01 00:00:00 EST 1987

OSTI ID:6313025

Snow, G C; Lorrain, J M

The report gives results of the operation of a 13.8-kW Limestone Injection Multistage Burner (LIMB) furnace. Furnace characterization, general sorbent survey, and calcium silicate test results are also given. Several candidate sorbent materials for the full-scale LIMB demonstration at Edgewater Station (Ohio) were evaluated. SO2 capture was measured while firing Pittsburgh No. 8 coal (2.6% sulfur) and natural gas spiked with SO2. Sorbent was injected at 1210 C. With a furnace quench rate of 260 C/s, the average residence time at reaction temperatures was 1.3 s. At Ca/S molar ratios of 2, Vicron 45-3 limestone reduced SO2 emissions 38% from baseline levels. Increased SO2 capture rates of 60-69% were measured for various calcitic atmospheric hydrates. Dolomitic sorbents were able to achieve captures of 73-75% and showed no significant difference between atmospheric and pressure hydrates. With the addition of sodium bicarbonate at molar Ca/Na = 15, captures of 83 and 88% were possible for the calcitic and dolomitic hydrates, respectively. Sodium bicarbonate was evaluated as a fuel additive as well as a sorbent additive.

• Research Organization: Acurex Corp., Research Triangle Park, NC (USA). Southeast Regional Office
• OSTI ID: 6313025
• Report Number(s): PB-87-188926/XAB; ACUREX/TR-86/010/SR
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
NITROGEN OXIDES
SULFUR OXIDES
COMBUSTION
CONTROL
CALCIUM SILICATES
SODIUM CARBONATES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SILICATES
SILICON COMPOUNDS
SODIUM COMPOUNDS
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
010800* - Coal
Lignite
& Peat- Waste Management
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)