Combustion evaluation of residual fuel oil from two-stage liquefaction. Final report. [Residual fuel oil similar to No. 6 fuel oil from petroleum]

Technical Report · Tue Feb 01 04:00:00 EST 1983

OSTI ID:6785208

Arand, J K; Chrisman, L J.P.; Mansour, M N; Muzio, L J

Combustion tests of a two-stage coal liquefaction (TSL) residual fuel oil were performed at a laboratory scale to evaluate the combustion and emission characteristics of the fuel. The fuels used in the evaluation were produced by EPRI's Coal Liquefaction Development Facility located at Wilsonville, Alabama. Initially, testing was performed with a blend of TSL solids and a coal-derived distillate designed to simulate the TSL residual fuel oil expected to be produced by the pilot plant. Subsequently, further tests were conducted with the actual TSL residual fuel oil prepared entirely from products of two-stage liquefaction processing. Combustion variables examined during the test program included furnace excess O/sub 2/, fuel atomization, burner stoichiometry, combustion air swirl and boiler load. In general, the tests showed that TSL residual fuel oil burns well with flame characteristics similar to those of No. 6 fuel oil. Due to the high nitrogen content of the fuel (approximately 0.9 percent by weight), NO emissions from TSL residual fuel oil under normal combustion (unstaged) were 400 to 500 ppM greater than the emission level produced by a conventional No. 6 fuel oil. Staged combustion was shown to be effective in reducing NO emissions by up to 60 percent; however, the reduction in NO emissions was obtained at the expense of doubling the particulate emissions (from 0.1 to 0.2 lb/10/sup 6/ Btu). Modification of atomizer design variables provided a reduction in both particulate and NO emissions. These results suggest that further refinement of the combustion variables may allow the use of this fuel as a replacement for petroleum-derived residual fuel oil in utility type applications.

• Research Organization: KVB, Inc., Irvine, CA (USA)
• OSTI ID: 6785208
• Report Number(s): EPRI-AP-2845; ON: DE83901448
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
014000* -- Coal
Lignite
& Peat-- Combustion
ATOMIZATION
BOILER FUELS
CHALCOGENIDES
COAL LIQUEFACTION
COAL LIQUIDS
COMBUSTION PROPERTIES
DATA
EMISSION
EXPERIMENTAL DATA
FLUIDS
FUEL OILS
FUEL-AIR RATIO
FUELS
INFORMATION
LIQUEFACTION
LIQUID FUELS
LIQUIDS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
THERMOCHEMICAL PROCESSES
TSL PROCESS