Flash pyrolysis of New Mexico sub-bituminous coal in helium-methane gas mixtures

Conference · Tue Apr 01 00:00:00 EST 1986

OSTI ID:5548213

Sundaram, M S; Fallon, P T; Steinberg, M

A New Mexico sub-bituminous coal was flash pyrolyzed in gas mixtures of helium and methane at 1000/sup 0/C and 50 psi in an 1-in. I.D. entrained down-flow tubular reactor. The mixture contained 0 to 40% helium in methane. Under tested experimental conditions, pyrolysis in gas mixtures resulted in higher yields of ethylene and BTX than in pure methane. For example, under a coal flow rate of 1.0 lb/hr and methane flow rate of 4.0 lb/hr, pyrolysis in pure methane produced 7.7% C/sub 2/H/sub 4/ and 9.0% BTX on the basis of carbon contained in coal; under similar coal and methane flow rates, as high as 14.8% C/sub 2/H/sub 4/ and 15.3% BTX were obtained on pyrolysis in 25% He + 75% CH/sub 4/ gas mixture. The data show that the coal flow rate and methane flow rate both independently effect the yields of C/sub 2/H/sub 4/ and BTS. At constant methane flow rate, increase in coal flow rate decreases the yields of C/sub 2/H/sub 4/ and BTX; at constant coal flow rate, increase in methane flow rate increases the yields of C/sub 2/H/sub 4/ and BTX. 6 refs., 2 tabs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5548213
• Report Number(s): BNL-38061; CONF-860911-8; ON: DE86011538
• Resource Relation: Conference: 192. American Chemical Society national meeting, Anaheim, CA, USA, 7 Sep 1986
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BENZENE
YIELDS
COAL
PYROLYSIS
ETHYLENE
PRODUCTION
CONTROLLED ATMOSPHERES
FLASH HEATING
PYROLYSIS PRODUCTS
CHEMICAL COMPOSITION
TOLUENE
XYLENES
CHEMICAL FEEDSTOCKS
EXPERIMENTAL DATA
HELIUM
METHANE
SUBBITUMINOUS COAL
ALKANES
ALKENES
ALKYLATED AROMATICS
AROMATICS
ATMOSPHERES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HEATING
HYDROCARBONS
INFORMATION
MATERIALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
RARE GASES
THERMOCHEMICAL PROCESSES
010406* - Coal & Coal Products- Pyrolysis & Cracking- (-1987)