2 research outputs found
Microwave plasma for hydrogen production from liquids
The hydrogen production by conversion of liquid compounds containing hydrogen was investigated
experimentally. The waveguide-supplied metal cylinder-based microwave plasma source (MPS) operated at
frequency of 915 MHz at atmospheric pressure was used. The decomposition of ethanol, isopropanol and kerosene
was performed employing plasma dry reforming process. The liquid was introduced into the plasma in the
form of vapour. The amount of vapour ranged from 0.4 to 2.4 kg/h. Carbon dioxide with the fl ow rate ranged
from 1200 to 2700 NL/h was used as a working gas. The absorbed microwave power was up to 6 kW. The effect
of absorbed microwave power, liquid composition, liquid fl ow rate and working gas fl ow rate was analysed.
All these parameters have a clear infl uence on the hydrogen production effi ciency, which was described with
such parameters as the hydrogen production rate [NL(H2)/h] and the energy yield of hydrogen production
[NL(H2)/kWh]. The best achieved experimental results showed that the hydrogen production rate was up to
1116 NL(H2)/h and the energy yield was 223 NL(H2) per kWh of absorbed microwave energy. The results were
obtained in the case of isopropanol dry reforming. The presented catalyst-free microwave plasma method can
be adapted for hydrogen production not only from ethanol, isopropanol and kerosene, but also from different
other liquid compounds containing hydrogen, like gasoline, heavy oils and biofuels