Gasification of biomass in water/gas-stabilized plasma for syngas production

Abstract

The experimental reactor PLASGAS for plasma pyrolysis and vitrification equipped with the hybrid gas-water stabilized torch was used in the experiments. The plasma torch is characterized by low density, high temperature plasma with very low mass flow rates and high enthalpy. High plasma enthalpy is advantageous for adjustment of higher reaction temperatures with high energy efficiency. Gasification of biomass was experimentally studied using wood as a model substance. The experimental results proved that homogeneous heating of the volume of plasma reactor and proper mixing of plasma with treated material were ensured despite of low plasma mass flow rate and constricted form of plasma jet. The conditions within the reactor ensured complete destruction of tested substance. Syngas with high content of hydrogen and CO was obtained. No presence of complex hydrocarbons or tar was detected, which is very important for possible practical application of the technology.PACS : 52.25.Jm

Plasma gasification of wood and production of gas with low content of tar

“…Produced gases leave the gasification chamber and are cooled down approximately to 250 • C by water spray in the quenching chamber. More detailed description and sketch of the reactor is presented in [6]. Plasma was generated in the torch with DC arc stabilized by combination of gas flow and water vortex.…”

“…The tube for the collection of samples was cooled by the water spray in the quenching chamber. The results of the measurements of chemical composition are given in [6]. Tar was captured onto DSC-NH2 (polymerically bound aminopropyl) adsorbent or silica gel positioned at the tube and the samples were flushed out and analyzed by means of gas chromatography.…”

Waste Gasification by Thermal Plasma: A Review

“…France [78], Czech Republic [71,[79][80][81][82][83][84] and Russia [85][86][87]. The product can be injected in solid form [71] or liquid [78], from a pyrolysis cycle or crushed.…”

“…The product can be injected in solid form [71] or liquid [78], from a pyrolysis cycle or crushed. The torch is often located in the upper part of the reactor with an ash recovery area in the bottom part [32,81].…”

“…Due to the absence of complete results in the scientific literature, only few representative plasma gasification processes have been compared [25,32,74,81,85,92,94].…”