Development of criteria for extension of applicability of low emission, high efficiency coal burners. Annual report Sep 77-Sep 78

Technical Report · Wed Feb 01 04:00:00 EST 1984

OSTI ID:6932412

Brienza, A; Chen, S; Heap, M; Lee, J; Nurick, W

The report gives results of the first year's effort on this contract. Experimental studies were conducted at three scales to determine the influence of coal properties on NOx emissions. In addition, the use of sorbents to reduce SOx emissions from coal flames was investigated. Bench-scale (0.1 million Btu/hr) investigation concentrated on studies to define the effect of coal characteristics on fuel nitrogen conversion. Based on these investigations, the total coal nitrogen content does not appear to be the primary variable controlling fuel NO production in pulverized-coal flames. Experiments were conducted with research-design low-NOx burners at two scales (12.5 and 100 million Btu/hr) using three coal types. Under optimum conditions, the NOx emissions, typically below 200 ppm (dry at 0% O/sub 2/), were only slightly dependent on coal characteristics. Preliminary investigations assessed the use of the low-NOx burner design to reduce NOx and SOx emissions by adding sorbents to the coal before the pulverizer. Limestone added this way gave 50, 70, and 80% reductions in SO/sub 2/ emissions at calcium/sulfur molar ratios of 1, 2, and 3, respectively.

• Research Organization: Energy and Environmental Research Corp., Irvine, CA (USA)
• OSTI ID: 6932412
• Report Number(s): PB-84-161470
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
BURNERS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
COAL
COMBUSTION PRODUCTS
CONTROL
EFFICIENCY
ENERGY SOURCES
FEASIBILITY STUDIES
FOSSIL FUELS
FUELS
INDUSTRIAL WASTES
LIMESTONE
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
ROCKS
SEDIMENTARY ROCKS
SEPARATION PROCESSES
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
WASTES