RESEARCH ON TORREFACTION OF BIOFUEL AND ITS GASIFICATION IN A SUPERADIABATIC REGIME

The advantages of the biofuel torrefaction method as a promising method of preliminary thermochemical treatment of solid biomass-based fuels for improving their performance characteristics are shown. The results of wood chips and peat torrefaction in a nitrogen atmosphere are presented. During peat torrefaction, a signifi cant eff ect of its self-heating was observed. The obtained samples of torrefi ed biofuel were gasifi ed in a superadiabatic reactor. A comparison analysis of the gasifi cation characteristics for the original (untreated) chips and torrefi ed chips is carried out. Data on the composition of gas-phase gasifi cation products and nitrogen oxide concentration obtained using electrochemical gas analyzers are presented. Using a comparative analysis of the composition of liquid-phase gasifi cation products, the fact of a relatively greater presence of heavier organic components in the condensate during gasifi cation of torrefi ed chips is established by the mass spectrometry method. The data obtained confi rm the potential of the combined use of the methods of torrefaction and gasifi cation of biofuel mixtures in a superadiabatic regime as an energy-effi cient and environmentally friendly method of processing and recycling municipal waste, as well as of forestry, agricultural and industrial production
The advantages of the biofuel torrefaction method as a promising method of preliminary thermochemical treatment of solid biomass-based fuels for improving their performance characteristics are shown. The results of wood chips and peat torrefaction in a nitrogen atmosphere are presented. During peat torrefaction, a signifi cant eff ect of its self-heating was observed. The obtained samples of torrefi ed biofuel were gasifi ed in a superadiabatic reactor. A comparison analysis of the gasifi cation characteristics for the original (untreated) chips and torrefi ed chips is carried out. Data on the composition of gas-phase gasifi cation products and nitrogen oxide concentration obtained using electrochemical gas analyzers are presented. Using a comparative analysis of the composition of liquid-phase gasifi cation products, the fact of a relatively greater presence of heavier organic components in the condensate during gasifi cation of torrefi ed chips is established by the mass spectrometry method. The data obtained confi rm the potential of the combined use of the methods of torrefaction and gasifi cation of biofuel mixtures in a superadiabatic regime as an energy-effi cient and environmentally friendly method of processing and recycling municipal waste, as well as of forestry, agricultural and industrial production
Author:  N. M. Gorbachev, S. I. Futko, A. V. Vlasov, M. I. Rusakevich, I. A. Koznacheev, D. S. Makarenko, and T. N. Bochko
Keywords:  biomass, biofuel, biomass gasifi cation, biomass torrefaction, pyrolysis and gasifi cation of wood, nitrogen oxides, municipal solid waste, fi ltration combustion, superadiabatic eff ect, thermogravimetric analysis, gas analysis, mass spectrometry
Page:  349