Thermal coupling of methane in a tubular flow reactor: Parametric study

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00020a003· OSTI ID:5896156

Billaud, F G; Baronnet, F ^[1]; Gueret, C P ^[2]

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1. ENSIC-INPL, Nancy, (France). Dept. de Chimie Physique des Reactions
2. Inst. Francais du Petrole, Rueil Malmaison (France)

The thermal cracking of methane in the presence of hydrogen (H[sub 2]/CH[sub 4] ratio from 1 to 2), was investigated in a tubular flow reactor at 10[sup 5] Pa, in the temperature range 1,180-1,230 C, at residence times ranging from 0.2 to 1.5 s. Reaction products were analyzed by gas-phase chromatography: products in the gaseous samples were ethylene and acetylene as major products and ethane, propene, propadiene, propane, butadiene, butenes, and cyclopentadiene as minor products. In the liquid samples (quenched) the products were benzene, toluene, xylenes, and naphthalene. Formation of coke and tar was also observed. Hydrogen dilution increases yields and selectivities of C[sub 2] hydrocarbons, avoid carbon formation, but reduces methane conversion. The experimental results show the large effect of short residence times associated with high-temperature levels. The formation of the measured reaction products and the influence of H[sub 2] dilution on methane conversion and on the product distribution are accounted for by a reaction model.

• OSTI ID: 5896156
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 32:8; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ACETYLENE
ALKANES
ALKENES
ALKYLATED AROMATICS
ALKYNES
AROMATICS
BENZENE
BY-PRODUCTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHROMATOGRAPHY
COKE
CONDENSED AROMATICS
CRACKING
DATA
DECOMPOSITION
ETHYLENE
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HYDROCARBONS
INFORMATION
KINETICS
MATHEMATICAL MODELS
METHANE
NAPHTHALENE
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PYROLYSIS
REACTION KINETICS
SEPARATION PROCESSES
SYNTHESIS
TAR
THERMAL CRACKING
THERMOCHEMICAL PROCESSES
TOLUENE
XYLENES
YIELDS