Numerical Study on the Acetylene Concentration in the Hydrogen-Carbon System in a Hydrogen Plasma Torch

摘要

Effects of the hydrogen/carbon mole ratio and pyrolysis gas pressure on the acetyleneconcentration in the hydrogen-carbon system in a plasma torch were numerically calculated byusing the chemical thermodynamic equilibrium method of Gibbs free energy.The calculatedresults indicate that the hydrogen concentration and the pyrolysis gas pressure play crucial rolesin acetylene formation.Appropriately abundant hydrogen,with a mole ratio of hydrogen to carbonabout 1 or 2,and a relatively high pyrolysis gas pressure can enhance the acetylene concentration.In the experiment,a compromised project consisting of an appropriate hydrogen flow rate and afeasible high pyrolysis gas pressure needs to be carried out to increase the acetylene concentrationfrom coal pyrolysis in the hydrogen plasma torch.