Produção De Briquetes Para Queima Utilizando Finos Da Produção De Carvão Vegetal E Glicerina

Abstract

Este trabalho teve como objetivo avaliar a viabilidade técnica da produção de briquetes a partir de finos de carvão vegetal e de glicerina bruta, para a geração de energia. A importância deste trabalho está relacionada ao desequilíbrio entre oferta e demanda da glicerina no mercado e à grande geração de resíduos de finos de carvão nas indústrias carvoeiras. Briquetes são materiais compactados que possuem formato definido e alto poder energético na queima. Foram produzidos briquetes de três composições de glicerina (10, 15 e 20%), três composições de amido de milho como aglutinante (5, 10 e 15%) e duas pressões de compactação (283 e 425 kgf.cm --2 BRIQUETTES PRODUCTION OF BURNING USING THIN OF CHARCOAL PRODUCTION AND GLYCERINE ABSTRACTThis study aimed to assess the technical feasibility of producing briquettes from charcoal fines and crude glycerin, for power generation. The importance of this work is related to the imbalance between supply and demand of glycerin in the market and the great generation of coal fines waste in bunkers industries. Briquettes are compressed materials that have defined shape and high energy power in the burning. Three glycerin compositions were produced briquettes (10, 15 and 20%), three compositions corn starch as binder (5, 10 and 15%) and two compaction pressures (283 and 425 kgf.cm --2 ). The briquettes were made in a hydraulic press, formed into a cylindrical mold of 67 mm diameter. The quality of the briquettes was assessed by analysis of impact resistance, ash content and calorific value. Regarding impact strength, in different compositions, briquettes produced were able to withstand 3 falls. In terms of ash content in the briquettes composition of 65% carbon, 20% glycerin and 15% binder showed the best results. And for the heating power, the best results were obtained in the composition of 70% carbon, 20% glycerin and 10% binder. So between these two, the latter was considered the best briquette because, besides having similar values of ash content, heating value and has better uses larger amount of coal fines.