Catalytic Pyrolysis/Gasification of Refuse Derived Fuel for Hydrogen Production and Tar Reduction: Influence of Nickel to Citric Acid Ratio Using Ni/SiO2 Catalysts
Catalytic Pyrolysis/Gasification of Refuse Derived Fuel for Hydrogen Production and Tar Reduction: Influence of Nickel to Citric Acid Ratio Using Ni/SiO2 Catalysts
复制标题
垃圾衍生燃料催化热解/气化制氢和焦油还原：使用 Ni/SiO2 催化剂的镍与柠檬酸比例的影响
DOI：
10.1007/s12649-013-9254-7
复制
发表时间：
2013
影响因子：
3.2
通讯作者：
Blanco P
中科院分区：
文献类型：
--
作者：
Blanco P
气化技术是固体废物热处理的一种有吸引力的替代方案，可产生高能值的富氢合成气。产生的气体中存在焦油会降低其质量和在进一步加工中的潜在用途；因此，减少废物气化中的焦油是一项重大挑战。在这项工作中，使用两阶段反应系统研究了来自城市固体废物的垃圾衍生燃料（RDF）的热解/气化，该系统采用溶胶-凝胶法制备的 Ni/SiO2 催化剂，并改变柠檬酸浓度（CA）。对新鲜和反应后的催化剂的表面积和孔径分布、程序升温氧化和高分辨率扫描电子显微镜进行了表征。根据 Ni/SiO2 催化剂的特性和性能评估了镍与柠檬酸比例 (Ni:CA) 的影响。结果表明，随着Ni:CA比例的增加，所制备的Ni/SiO2催化剂表现出相对较高的比表面积和孔径分布。在RDF热解/气化过程中考察了所制备催化剂的焦油还原和制氢效率；结果与使用沙床的空白实验进行了比较。使用气相色谱/质谱法对焦油部分进行定量。使用 Ni:CA 比例为 1:1 和 1:3 的催化剂可实现约 0.2 mgtar/gRDF 的低焦油浓度；此外，使用 Ni:CA 比例为 1:3 的催化剂还获得了高氢浓度（58 vol%）、低 CH4（2.2 vol%）和 C2-C4 浓度（0.8 vol%）。使用砂床获得了约 1.7 mgtar/gRDF 的较高焦油浓度，同时氢气产量显着降低。使用 Ni/SiO2 催化剂在焦油样品中鉴定出的主要焦油化合物是苯酚、甲酚、萘、芴和菲。
Gasification technology is an attractive alternative for the thermal treatment of solid wastes, producing a high energy value hydrogen rich syngas. The presence of tar in the produced gas diminishes its quality and potential use in further processes; for this reason the reduction of tar in waste gasification is a major challenge. In this work the pyrolysis/gasification of refuse derived fuel (RDF) from municipal solid wastes, was investigated using a two-stage reaction system with Ni/SiO2catalysts prepared by a sol–gel method varying the citric acid concentration (CA). The fresh and reacted catalysts were characterised for surface area and pore size distribution, temperature programmed oxidation, and high resolution scanning electron microscopy. The effect of the nickel to citric acid ratio (Ni:CA) was evaluated in terms of the characteristics and performance of the Ni/SiO2catalysts. The results showed that the prepared Ni/SiO2catalysts exhibited a relatively high surface area and an increase in pore size distribution as the Ni:CA ratio was increased. The efficiency of the prepared catalysts on tar reduction and hydrogen production was examined during the pyrolysis/gasification of RDF; the results were compared with a blank experiment using a bed of sand. The tar fraction was quantified using gas chromatography/mass spectrometry. A low tar concentration of ~0.2 mgtar/gRDFwas attained using the catalysts with Ni:CA ratios of 1:1 and 1:3; additionally a high hydrogen concentration (58 vol%), and low CH4(2.2 vol%) and C2–C4concentrations (0.8 vol%), were attained using the catalyst with a Ni:CA ratio of 1:3. A higher tar concentration of ~1.7 mgtar/gRDFwas attained using the bed of sand, while the hydrogen production was remarkably decreased. The major tar compounds identified in the tar samples using the Ni/SiO2catalysts were phenol, cresols, naphthalene, fluorene, and phenanthrene.
生物质燃料鼓泡流化床气化过程中碳质细颗粒的生成和转化
DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
F. Miccio;O. Moersch;H. Spliethoff;K. Hein
通讯作者：
K. Hein
影响因子：
22.1
作者：
Blanco, Paula H.;Wu, Chunfei;Williams, Paul T.
通讯作者：
Williams, Paul T.
不同类型气化炉冷凝水中的焦油化合物
DOI：
--
发表时间：
2000
期刊：
影响因子：
--
作者：
E. Larsen;H. Egsgaard;K. Pedersen;U. Zielke
通讯作者：
U. Zielke