Comparative study of the combustion of alternate liquid fuels. [Middle and high boiling SRC-II distillates coal-oil mixtures]

Technical Report · Mon Jan 01 04:00:00 EST 1979

OSTI ID:6154054

Ekmann, J M; Mathur, M P; McCann, C R; Bienstock, D

Tests were conducted at the Pittsburgh Energy Technology Center on various alternate liquid fuels and then compared to an existing data base on No. 6 oil. The alternate fuels tested included 20% and 30% coal-oil mixture, two types of shale oil, and a blend of middle and high boiling SRC II distillates. The tests were conducted as parts of several independent programs; however, sufficient similarity was maintained throughout the tests to permit comparison between selected experiments in the area of boiler performance, particulate and nitrogen oxide emissions, and average flame optical properties. The tests were run in a 100 HP boiler instrumented to obtain complete data, information on flame characteristics, mass balances and particulate distributions in the combustion behavior of liquid fuels. Ultimate analyses of the fuels plus the higher heating value and the hydrogen-to-carbon atom ratio are presented in Table 1. Similar data are presented for the Pittsburgh seam coal used in preparation of the COM's, although no combustion tests were conducted on coal alone in this program. In general, all the fuels tested resulted in acceptable boiler performance. No major modifications were necessary to the burner, although combustion of the coal-oil mixtures did require some changes in the distribution of the combustion air. The No. 6 oil, 20% COM, and 30% COM required preheating prior to atomization. The two shale oils and the SRC II behaved much like No. 2 oil in the fuel train. Heat balances on the tests indicate no significant degradation in performance when utilizing the various fuels. The relationship between fuel type and flame optical properties is summarized in Table 2. The data are listed in order of decreasing radiance measured on the combustor axis, or, where test data are absent, by decreasing emissivity. 3 tables.

• Research Organization: USDOE Pittsburgh Energy Technology Center, PA
• OSTI ID: 6154054
• Report Number(s): CONF-7911188-1; ON: DE83008216
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
014000* -- Coal
Lignite
& Peat-- Combustion
04 OIL SHALES AND TAR SANDS
040500 -- Oil Shales & Tar Sands-- Properties & Composition
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
ASHES
BOILERS
CARBON
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
COAL
COAL LIQUEFACTION
COAL LIQUIDS
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
DATA
DISPERSIONS
DISTILLATES
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FLAMES
FLUIDS
FOSSIL FUELS
FUEL OILS
FUEL SLURRIES
FUELS
HYDROGEN
INFORMATION
LIQUEFACTION
LIQUID FUELS
LIQUIDS
MATERIALS
MINERAL OILS
MIXTURES
NITROGEN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
OILS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PERFORMANCE
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
RESIDUES
SHALE OIL
SLURRIES
SRC-II PROCESS
SULFUR
SUSPENSIONS
THERMOCHEMICAL PROCESSES