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过程工程学报 ›› 2016, Vol. 16 ›› Issue (4): 629-633.DOI: 10.12034/j.issn.1009-606X.215438

• 过程与工艺 • 上一篇    下一篇

酒糟与煤焦在CO2气氛下的共气化特性

张德成1,敖先权2,陈前林1,曹阳1,谢燕1,罗焕虎1,张纪芳1   

  1. 1. 贵州大学 化学与化工学院
    2. 贵州省贵阳市贵州大学蔡家关校区化学工程学院
  • 收稿日期:2016-01-11 修回日期:2016-03-04 出版日期:2016-08-20 发布日期:2016-10-10
  • 通讯作者: 敖先权 aoxianquan@163.com

Co-gasification Characteristics of Distillery Residue with Coal Char in CO2 Atmosphere

ZHANG De-cheng 1,AO Xian-quan 1,CHEN Qian-lin 2,CAO Yang 2,XIE Yan 2,LUO Huan-hu 2,ZHANG Ji-fang 2   

  1. 1. School of Chemistry and Chemical Engineering, Guizhou University
    2. School of Chemistry and Chemical Engineering, Gui Zhou University
  • Received:2016-01-11 Revised:2016-03-04 Online:2016-08-20 Published:2016-10-10
  • Contact: AO Xian-quan aoxianquan@163.com

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摘要： 利用固定床反应器研究了酒糟和煤焦在CO2气氛下的共气化特性，考察了实验样品的孔隙结构、表面元素组成及灰分矿物组成. 结果表明，酒糟和煤焦在CO2气氛下共气化过程中存在协同作用，产气中除CO2外，主要产生CO, H2和CH4气体，且在酒糟掺混比例为80%时浓度最高. 气化反应温度和酒糟掺混比例是影响共气化反应的主要因素，酒糟掺混比例相同时，900?1100℃范围内随温度升高，共气化反应活性提高；温度相同时，20%?80%范围内随酒糟掺混比例增加，共气化反应活性增大. 酒糟含69.47%挥发分，且在气化过程中产生大量孔隙及酒糟和煤焦中分别含K和Ca元素对共气化反应起催化作用，是共气化反应活性提高的主要原因.

关键词: 酒糟, 煤焦, CO2, 共气化, 反应活性

Abstract: Co-gasification reactivity of distillery residue and coal char with CO2 was studied by a fixed bed reactor. The pore structure, surface elemental composition and ash mineral composition of the experimental samples were investigated by scanning electron microscopy analysis methods, X-ray spectroscopy and X-ray diffraction. The results showed that the co-gasification reactivity of distillery residue and coal char with CO2 have significant synergies, and except CO2, the main production of this reactivity is CO, H2 and CH4. The highest concentration is produced of the three gases under the blending ratio of the distillery residue of 80%. The gasification temperature and the blending ratio of distillery residue are the major factors which affect the co-gasification reactivity. At the same blending ratio of distillery residue, the co-gasification reactivity increased with increasing temperature within a temperature range of 900?1100℃. At the same temperature, the co-gasification reaction activity increased with increasing of the blending ratio of distillery residue at the range of 20%?80%. Distillery residue contains volatile content as high as 69.47%, inducing a large amount of pore structure during gasification. The induced pore, the potassium and calcium contained in the distillery residue and coal char, are the main factors for improving the co-gasification reactivity.

Key words: distillery residue, coal char, CO2, co-gasification, reactivity