우분 성형 고형연료의 열 및 물리화학적 특성

초록

Cattle wastes could be used effectively as the solid fuel for heating of agricultural facilities. Thus, this study was carried out to investigate the characteristics of thermal and physicochemical characteristics of solid fuel extruded with cattle wastes. Calorific values for the extruded solid fuel of cattle wastes, which were dried as the moisture contents of 0.0%(w.b) and 35.0%(w.b,) were 3,560 kcal/kg and 2,600 kcal/kg, respectively. Calorific value of extruded solid fuel was linearly decreased with the increase of moisture content. The first, second, and third reaction point during thermal pyrolysis of solid fuels extruded with cattle wastes was investigated as 108.1℃, 312.2℃, and 459.4℃, respectively. The maximum reaction point was presented at the temperature of 312.2℃. Weight loss of extruded cattle wastes during thermal pyrolysis until 600℃ was reached to about 60%. Volume decrease of initial extruded cattle waste was 61% during drying for the use as solid fuel. Maximum strength of extruded cattle wastes, which was dried as the moisture content of 10%(w.b.) was 41,9150 N/㎡. Ignition gas analysis of extruded cattle waste presented that it has small amount of NOx and SOx. It was shown that dried cattle waste had main components of C and O including small amount of Mg, Si, and Ca.

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