将甘蔗渣飞灰(scbfa)制成木炭的成型工艺作为替代燃料。

Briquetting of charcoal from sugar-cane bagasse fly ash (scbfa) as an alternative fuel.

机构信息

Department of Physics, Chemistry and Biology, Universidade Estadual Paulista - UNESP, P.O. Box 467, 19060-080 Presidente Prudente, SP, Brazil.

出版信息

Waste Manag. 2010 May;30(5):804-7. doi: 10.1016/j.wasman.2010.01.018. Epub 2010 Feb 4.

Abstract

Brazil is the largest worldwide producer of alcohol and sugar from sugar-cane and has an extensive alternative program for car fuel which is unique. The objective of this work is to offer one management option of a solid residue produced by this industrial segment. The pressed sugar-cane bagasse is burned to produce steam and electricity by cogeneration. The combustion yields both bottom and fly ashes which contain high amounts of silicon oxide as a major component. Fly ash which contains a high volume (>30% by weight) of charcoal was used in this work. The ash was sieved to separate the thick charcoal from inorganic materials which are concentrated in the thinner fraction. The briquettes were hand pressed using charcoal mixed with a binder (starch) obtained from cassava flour (a tropical root). The results (density, mechanical resistance) obtained with 8% by weight of starch binder are presented here. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to characterize the ashes and the briquettes. The results show that sugar-cane bagasse fly ash (SCBFA) can be used to produce briquettes with an average density of 1.12gcm(-3) and an average calorific value of 25,551kJ/kg.

摘要

巴西是世界上最大的甘蔗制酒精和糖的生产国,并且拥有广泛的汽车燃料替代计划,这在全球范围内是独一无二的。本文的目的是为该工业领域产生的一种固体残渣提供一种管理选择。经压榨的甘蔗渣通过热电联产燃烧产生蒸汽和电力。燃烧产生底灰和飞灰,其中氧化硅含量很高,是主要成分。本文使用了飞灰,其中含有大量(重量超过 30%)的木炭。将灰分过筛,以将厚木炭与集中在较细部分的无机材料分离。将木炭与从木薯粉(一种热带根茎)中获得的粘合剂(淀粉)混合,用手将制成的木炭压制成型。本文介绍了使用 8%重量淀粉粘合剂时得到的结果(密度、机械强度)。热重分析(TGA)和差示扫描量热法(DSC)用于对灰分和成型燃料进行特性分析。结果表明,甘蔗渣飞灰(SCBFA)可用于生产平均密度为 1.12gcm(-3)、平均热值为 25551kJ/kg 的成型燃料。

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