Reduction of NO /SUB x/ and particulates emission by staged combustion of coal liquid fuels

Conference · Mon Mar 01 04:00:00 EST 1982 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:6398153

Beer, J M; Farmayan, W; Hanson, S; Jacques, M T

Several coal liquefaction processes are currently being developed which are capable of producing a wide range of liquid fuels. Plans for full scale demonstration plants employing the SRC-I and SRC-II processes are well advanced and the H-Coal and Exxon Donor Solvent processes have been successfully demonstrated at large pilot plant level. While there are differences in the composition of raw coal-derived liquid fuels, their nitrogen content is found to be consistently high across the entire boiling range, much higher than that of equivalent petroleum fuels. This fuel-bound nitrogen presents a significant problem for direct substitution of minimally processed coal liquids for petroleum fuels, since, under conventional fuel-lean combustion conditions, the fuel-nitrogen converts to NO and becomes the major source of unacceptably high NO /SUB x/ emissions. A research program is under way at MIT under EPRI sponsorship. The program objectives are to identify and quantitatively describe the critical steps involved in the processes of fuelnitrogen evolution and conversion in order to develop a design strategy for minimizing NO /SUB x/ and particulate emissions from the combustion of coal derived liquid fuels. The research complements a fundamental study on the kinetics of fuel-nitrogen evolution from pyrolyzing fuel particles and droplets sponsored by EPA and on fuel-nitrogen conversion in fuel-rich flames, under the sponsorship of DOE. In this paper, the results are presented on two experimental studies: a laboratory investigation on the evolution of fuel-nitrogen from vaporizing coal-derived liquid fuel, droplet streams and an investigation of the amenability of SRC-II fuels to combustion modifications by staged air introduction for NO /SUB x/ and particulates emission control via a furnace flame study using the MIT 3MW Combustion Research Facility.

• Research Organization: MIT, Cambridge, MA
• OSTI ID: 6398153
• Report Number(s): CONF-820304-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 27:1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
AIR POLLUTION ABATEMENT
BENCH-SCALE EXPERIMENTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL LIQUEFACTION PLANTS
COAL LIQUIDS
COMBUSTION
COMBUSTION CONTROL
COMBUSTION KINETICS
CONTROL
DATA
EXPERIMENTAL DATA
FLAMES
FLUE GAS
FLUIDS
FUELS
FURNACES
GASEOUS WASTES
INDUSTRIAL PLANTS
INFORMATION
KINETICS
LIQUID FUELS
LIQUIDS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION ABATEMENT
PRODUCTION
REACTION KINETICS
RESEARCH PROGRAMS
STAGED COMBUSTION
THERMOCHEMICAL PROCESSES
WASTES