A theoretical study of the C‐H system reveals that, at high temperatures, many polymeric species have to be taken into account. Free energy functions of the species involved have been calculated to permit the evaluation of the equilibrium compositions of the system in both the heterogeneous and homogeneous regions. Pressures ranging from 0.1 to 10 atm. and carbon to hydrogen ratios from 0.5 to 20 were investigated between 2,000 and 6,000°K.
Since the reaction of carbon vapor with hydrogen is highly exothermic, a reaction scheme was also developed whereby the endothermic heat of cracking of various hydrocarbons could be balanced by the former reaction. Several conditions related to a global heat of reaction have been considered.
A high intensity arc reactor was used to react carbon with a mixture of argon and propane at three different volumetric concentrations. The reaction output, when quenched, gives essentially QH, and hydrogen. The acetylene output depends mostly on the reaction temperature and on the carbon-hydrogen ratio.While higher concentrations of C,H2 might be obtained by operating the arc with a mixture of argon and propane rather than with pure propane, the efficiency of carbon utilization would be lowered when propane is diluted, the effect being more pronounced at higher concentrations of the diluent. The temperature of the carbon-propane system is influenced to a small extent only by the presence of a diluent. n electric arc, sustained at a high power level, is apt to
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