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This paper presents experimental results on the use of syngas produced from waste wood by two-stage pyrolytic conversion method, in the implementation of heating system on a basis of hot water boiler. The method of two-stage pyrolytic biomass processing, combining the waste wood pyrolysis, and subsequent heterogeneous cracking of volatile pyrolysis products in charcoal bed, provides a high degree of energy conversion of raw material into syngas with a lower calorific value of 10-11 MJ/m 3 . The possibility of partial replacement of diesel fuel in hot water boiler with syngas was shown.

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Paper presents the results of the experimental investigations of the pulp and paper industry’ wood waste processing method into high-quality synthesis gas. The main characteristics of feedstock (moisture and ash content, elemental composition, higher and lower heating values, volatile matter and fixed carbon content) and synthesis gas (yield, chemical composition, heating value and tar content) in dependence of the processing parameters are described. Processing is carried out by the two-stage pyrolytic conversion method, combining pyrolysis and subsequent high-temperature cracking of volatiles in the charcoal fixed bed. The principal scheme and results of the thermotechnical characteristics calculation of the pilot plant capacity of 300 kg/h of raw material (mechanical mixture of wood chips and bark with a moisture content of 48 %) are presented. The obtained results confirm the high efficiency of the method as applied to the processing of this type of waste.

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