Partial oxidation reforming of biomass raw gas over NiO-MgO solid solution monolithic catalyst

WANG Chenguang; WANG Tiejun; MA Longlong; WU Chuangzhi; GAO Yan

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Partial oxidation reforming of biomass raw gas over NiO-MgO solid solution monolithic catalyst

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- Partial oxidation reforming of biomass raw gas over NiO-MgO solid solution monolithic catalyst
- CIESC Journal Issue 4, Pages: 898-904(2009)
- 作者机构：
  
  1. 中国科学院可再生能源与天然气水合物重点实验室,中国科学院广州能源研究所,广东,广州,510640
  2. 中国科学院研究生院,北京,100039
- 作者简介：
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- Online First：05 April 2009，
  
  Published：05 April 2009
- 稿件说明：
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WANG Chenguang, WANG Tiejun, MA Longlong, et al. Partial oxidation reforming of biomass raw gas over NiO-MgO solid solution monolithic catalyst[J]. CIESC Journal, 2009, (4): 898-904.
DOI：

WANG Chenguang, WANG Tiejun, MA Longlong, et al. Partial oxidation reforming of biomass raw gas over NiO-MgO solid solution monolithic catalyst[J]. CIESC Journal, 2009, (4): 898-904. DOI：

摘要

采用分步浸渍法制备了NiO-MgO固溶体蜂窝催化剂，以60 h连续重整实验，考察了不同临氧条件下MCM催化剂催化生物质气重整净化的性能。利用TG-DSC对催化剂的表面积炭进行了分析，采用GC、GC-MS等手段对生物质气组成及焦油转化产物进行了分析。结果表明：加入O2后进行临氧重整，可改善出口合成气的品质，H2/CO摩尔比较干重整时提高了10%左右。但当O2/fuel摩尔比超过0.127时，H2/CO摩尔比有所下降。O2的加入可明显提高催化剂的催化活性和稳定性，随着O2 含量的增加出口合成气中的CH4含量降低，临氧重整条件下焦油的转化率较无氧条件时提高了5%，转化率达到99%以上。热重分析表明，O2 含量的增加会减少催化剂表面积炭量。实验中添加从气化现场提取的生物质焦油，经检测焦油大部分转化为H2、CO及痕量轻质组分，且对干重整中难于转化的含氧有机化合物等转化更为彻底。

Abstract

The NiO-MgO solid solution monolithic catalyst was prepared by the wet impregnation method.Sixty hours partial oxidation reforming tests were carried out at 750℃.TG-DSC was used to analyze the carbon deposition on the surface of the catalyst.GC and GC-MS were used to analyze the components of biomass raw gas and tar conversion products.The results showed that the addition of O2 could effectively increase the quality of fuel gas.Molar ratio of H2/CO increased by 10% compared with that of dry reforming.But more O2 would decrease the H2/CO ratio.The addition of O2 could also significantly increase the activity and stability of the catalyst.The CH4 conversion reached 99%

which was 5% higher than that of dry reforming.TG-DSC showed that the increase of O2/raw gas ratio could decrease the carbon deposition on the surface of the catalyst.Tar collected from biomass gasification was added in feed raw gas.GC-MS showed that most of the tar was converted to H2

CO and a trace amount of lighter components. The addition of O2 could eliminate the oxygen-containing organic compounds which were difficult to be eliminated in dry reforming.

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