Investigation of gas-phase reactions and ignition delay occurring at conditions typical for partial oxidation of methane to synthesis gas

Journal Article · Thu Jul 01 04:00:00 EDT 1999 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie9807304· OSTI ID:680073

Berger, R J; Marin, G B ^[1]

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1. Eindhoven Univ. of Technology (Netherlands)

Continuous-flow experiments in an empty aluminum oxide tube for the investigation of the homogeneous gas-phase reactions occurring at conditions typical for the partial oxidation of methane to synthesis gas were carried out at pressures from 300 to 800 kPa, temperatures from 1,030 to 1,300 K, inlet molar ratios of CH{sub 4}O{sub 2} from 2.1 to 3.1, and residence times from 0.09 to 0.38 s. The oxygen conversion varied from 3% to 43%. A detailed kinetic model based on a free-radical mechanism has been developed, which allows the adequate calculation of the feed conversions and product selectivities. The model reveals important features of the complex reaction network with the emphasis on the ignition stage at oxygen conversions between 0% and 5%. The occurrence of both isothermal ignition and thermal ignition can be distinguished in simulations with the model. The model was also used for estimating the ignition delays as a function of the process conditions.

• OSTI ID: 680073
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 7 Vol. 38; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
10 SYNTHETIC FUELS
CHEMICAL REACTION KINETICS
KINETIC EQUATIONS
MATHEMATICAL MODELS
METHANE
PARTIAL OXIDATION PROCESSES
SYNTHESIS GAS