卷期 : 47 / 2
出版年 : 2019/04/01
本文介紹生質燃料下吸式氣化爐之設計及應用,首先介紹生質材料之氣化原理,其次說明固定爐床小型氣化爐的氣化機制和下吸式氣化爐的設計及應用,最後探討氣體淨化的技術,在利用生質材料氣化方式產生合成氣時,焦油是最困擾的因素,因此,探討焦油形成因素及如何去除焦油的方法。一般生質材料氣化爐,依結構分成固定式爐床與浮動式爐床,一般約在2MW以下的小型氣化爐,大多採用固定式爐床,超過2MW的氣化爐採用浮動式,如流體化式爐床。其中固定式爐床又分為,下吸式、上吸式、橫吸式、無咽喉下吸式及兩段式或多段式等氣化爐。本文介紹的生質燃氣氣化爐是電結合熱應用的熱電複合型下吸式氣化爐,應用於穀物乾燥系統的生質氣化熱電系統。This article presents the design and application of downdraft gasifier including the theory of biomass gasification, mechanism of small fixed bed gasifier, and its detailed design. Finally, the purification techniques of syngas are investigated about how and why tar formed, which is formidable, when syngas was produced during biomass gasification, and subsequently the way to remove tar from syngas. In general, the gasifies are categorized into fixed bed and fluidized bed types. For those below 2MW, the fixed bed type was used, and fluidized one was for large scales over 2MW. As for fixed bed biomass gasifiers, there are a couple of designs consisting of downdraft, updraft, cross draft, throatless downdraft, two-stage, and multi-stage ones. This article primarily presents the research and modification of Combined Heat and Power (CHP) of downdraft biomass gasifier application for grain drying systems
關鍵詞 : 氣化(gasification)、生質材料氣化爐(biomass gasifier)、下吸式(downdraft)、上吸式(updraft)、橫吸式(cross draft)、兩段式(two stages)