Some physico-chemical parameters of soot formation during pyrolysis of methane and methane-acetylene and methane-benzene mixtures
- All-Russian Inst. of Natural Gas, Razvilka (Russian Federation)
Under isothermal conditions, pyrolysis of methane and its mixtures with acetylene and benzene was investigated at temperatures 1,200 C--1,400 C and methane concentrations 20--80%. Particle number density was shown to depend linearly on methane concentration, as was earlier demonstrated for acetylene. The equation of particle number density (N) was determined for methane as follows: N = 9.4{center_dot}10{sup 20}[CH{sub 4}]exp({minus}39,400/T). The activation energy of soot aerosol formation during methane pyrolysis was 328 kJ/mol. For both methane-acetylene and in ethane-benzene mixtures, inhibition of the soot particles formation from methane was obtained. Soot particles were formed only from benzene or acetylene, whereas methane was consumed for particle growth. Promotion of heterogeneous methane decomposition on the surface of soot particles formed from acetylene or benzene was found.
- OSTI ID:
- 93214
- Report Number(s):
- CONF-940711--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Soot formation at elevated pressures and carbon concentrations in hydrocarbon pyrolysis
Soot formation during pyrolysis of aromatic hydrocarbons