EXPERIMENTAL COMPARISON OF PERFORMANCE OF LITHUANIAN DOLOMITE AND WASTE TIRES CHAR FOR STEAM REFORMING OF REAL TARS FROM BIOMASS GASIFICATION

摘要

The main objective of this work is investigation of catalytic tar destruction in order to evaluate twoselected catalysts, namely dolomite, available in Lithuania as natural resource, and char derived from pyrolysis ofused tires. The efficiency of these catalysts were investigated as an ability to decompose tar hydrocarbons at hightemperatures and optimal process conditions were determined, which are base starting point for developing newfunctional technological solution. Results of catalytic steam reforming of real tars from biomass pyrolysis arepresented in this article. Tar destruction was performed in a fixed bed reactor changing temperature from 700°C to900°C and space-velocity from 0.28 to 0.04 s~(-1) with constant steam to carbon ratio of H_2O/C=1 and initialconcentration of tars 21.1±1.89 g/m~3. It was determined that thermal destruction of tars is most intensive using wastetire char as a catalyst at 900°C and 0.04 s~(-1). At this condition complete conversion of tars was achieved. Results of theresearch were compared with result of other authors who used dolomite from various countries of origin and charfrom biomass pyrolysis for tar destruction.