Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

OP-V-17ENERGY PRODUCTION FROM BIOMASS VIALOW-TEMPERATURE CATALYTIC PYROLYSISM. Sulman 1 , Yu. Kosivtsov 1 , E. Sulman 1 , V. Alfyorov 1 , Yu. Lugovoy 2 , V. Molchanov 1 ,I. Tyamina 1 , O. Misnikov 1 , A. Afanasjev 1 , N. Kumar 3 , D. Murzin 31 Dept. of Biotechnology and Chemistry, Tver Technical University, A. Nikitin str., 22, Tver,170026, Russia, fax: +7 (4822) 449317, E-mail: sulman@online.tver.ru2 Tver State University, Zhelyabova str., 34, Tver, 170000, Russia3 Åbo Akademi University, Biskopsgatan 8, 20500, Turku, Finland, E-mail: dmurzin@abo.fiIntroduction. Nowadays biomass is an important source of energy in the world. Thus,thermochemical conversion technology, e.g. pyrolysis, gasification and combustion arestudied extensively [1 – 3]. Pyrolysis is known to be an efficient way of converting biomassinto gases, oil-like liquid products and char.The aim of the investigations is to study the low-temperature pyrolysis of peat in thepresence of catalytic systems on the basis of natural alumosilicate materials and syntheticzeolites. Although peat has a relatively fast released CO 2 retake rate binding CO 2 on a similarlevels to a growing forest, the total regrowth rate of a single peat bog could be slower than1000 years, therefore peat is considered somewhere between truly renewable bio-fuels andfossilized fuels. Compared to the other fossil fuels, peat is characterized by the lowest contentof fixed carbon along with the highest content of volatile matter.The use and selection of a suitable catalyst is of crucial importance for the pyrolysisprocess because it permits to operate at lower temperatures and can provide selectivitytowards the desired products, avoiding any post-process upgrading, thus enhancing the benefitof the process and turning it economically feasible.Experimental. As the catalysts of peat pyrolysis both natural silica-alumina materials(caoline, bentonite and cambrian clays and clay mergel) and synthetic zeolites (H-Beta-25 andH-Mord purchased from «Zeolyst International» (USA)) were used.Catalytic action of natural silica-alumina minerals and synthetic zeolites was estimatedbasing on the volume of the evolving gaseous mixture, on the concentrations of hydrocarbonsin gaseous mixtures and also on the heat of combustion of combustible gases.Physicochemical analysis of silica-alumina catalytic materials was carried out via XFAand nitrogen physicosorption.To analyze the gaseous mixture (hydrocarbons, CO, CO 2 , H 2 ) and to estimate the heat ofcombustion the analytic complex – gas chromatograph and specially developed analyzer of200