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Processing of biomass for obtaining of liquid ethanol, platform chemicals and solid biofuel, is topical biorefinery schema intensively developing. Acid hydrolysis, separated hydrolysis and fermentation, and simultaneous saccharification and fermentation are integrated with other treatments for the advanced technology development. The aim of this work was estimation of effect of softwood and wheat straw hydrolysis type on fuel characteristics of rich-in-lignin residues with emphasis on content and component composition of ash and feedstock. Elemental Analysis; Atomic absorption spectroscopy; calorimetric method; Klason lignin determination were used. Laboratory scale pellet mill KAHL 14-175 and original small pilot-scale gasifier were used for study of residues granulation ability and combustion behavior of pellets obtained. The ash content in softwood residues slightly increase but does not exceed 1%, for wheat straw residues it is &gt;14% (0,2% and 10% for feedstock, correspondingly). The ashing temperature of 650oC is experimentally established as optimal. Detection of ash component allows to foreseen possible contamination connected with materials of the devices and chemicals used in the technological stream. Combustion mechanism of solid residues differs from that of feedstock by increasing of ratio duration of glue combustion to flame combustion steps, that is more characteristic for coal. The efficiency of biomass combustion was regulated by changing the ratio of primary and secondary air supply. Direct correlation established between higher heating value and Klason lignin content for samples, allows to recommend these analyses for evaluation of biomass potential as a fuel. Residues under study meet the requirements of EU Standard CN/TS 335.

proccedings of international scientific conference "rural development 2017"

EFFECTS OF CONTENTS AND COMPONENT COMPOSITION OF ASH AND ORGANIC CONSTITUENTS ON FUEL CHARACTERISTICS OF SOFTWOOD AND WHEAT STRAW HYDROLYTIC PROCESSING RESIDUES