生物质快速热解油水相重整制氢特性研究
文献类型：学位论文
| ; | |
| 作者 | 汪璐 |
| 学位类别 | 硕士 |
| 答辩日期 | 2008-06-03 |
| 授予单位 | 中国科学院广州能源研究所 |
| 授予地点 | 广州能源研究所 |
| 导师 | 王铁军 |
| 关键词 | 生物油 水蒸气重整 氢气 固定床反应器 两段式固定床反应器 |
| 其他题名 | Research on the properties of hydrogen production from the aqueous phase of biomass fast pyrolysis oil |
| 中文摘要 | Concerns about the depletion of fossil fuel reserves and the pollution caused by continuously increasing energy demands in the world make biomass an attractive alternative energy source. In the case that biomass is utilized to as an energy resource, the emission of carbon dioxide caused by its use is absorbed by newly grown biomass and this is called as carbon-neutral. Moreover, for the negligible sulfur, nitrogen and metal contents comparing with fossil fuels, biomass is a clean energy source. In China, there is abundance of biomass. Therefore the development and utilization of biomass energy is significative to the energy security of China. Hydrogen is not only an important resource for chemical industry, but also a clean fuel for fuel cell and combustion engine. Catalytic reforming from biomass pyrolytic oil is one of the most promising methods for hydrogen production. In this thesis, we mainly evaluated the performance of hydrogen production from reforming bio-oil aqueous phase over Z2O4 catalyst; we also designed Two-stage Fixed Bed Reactor, and therefore investigate the performance of hydrogen production from catalytic reforming bio-oil aqueous phase on this reactor. The results of catalytic reforming abtained on Two-stage Fixed Bed Reactor were better. First of all, the performance of hydrogen production from reforming of bio-oil aqueous phase over Z2O4 catalyst was evaluated. The results showed that the temperature was the main factor for hydrogen production from reforming bio-oil aqueous phase. In our experiment, reaction temperature at 750℃, reduction time at 1 hour was the best condition for hydrogen production, under which H2 yield reaches 42％ after 30 min, and keeps about 35％ for the next 540min. The resistance increase in the reaction chamber is due to the carbon deposit and the inorganic ash composed of Fe, Ca, Al. To prevent carbon residue formation on catalyst and reactor wall from non-volatile fraction, we designed Two-stage Fixed Bed Reactor to enhance the catalyst reforming results, whose performance of hydrogen production from reforming bio-oil aqueous phase was evaluated too. We discovered that the productive rate of hydrogen on Two-stage Fixed Bed Reactor was higher than the case on the normal Fixed Bed Reactor under the same condition and the stability of catalyst in Two-stage Fixed Bed Reactor was better as expected. Therefore, Two-stage Fixed Bed Reactor was better in optimizing the catalyst and preventing the resistance increase of the reactor. We discussed the possible reactions in the hydrogen production from reforming bio-oil aqueous phase based on the six most components detected in the condensed products from Two-stage Fixed Bed reactor and the majority components in bio-oil aqueous phase. Our conclusion is that the reactions in reforming bio-oil aqueous phase are mostly the catalytic pyrolysis of volatile fraction, the catalytic reform of methane and the shift-conversion of steam |
| 语种 | 中文 |
| 公开日期 | 2011-07-14 ; 2011-07-15 |
| 页码 | 67 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/5816]  |
| 专题 | 中国科学院广州能源研究所 |
| 推荐引用方式 GB/T 7714 | 汪璐. 生物质快速热解油水相重整制氢特性研究, Research on the properties of hydrogen production from the aqueous phase of biomass fast pyrolysis oil[D]. 广州能源研究所. 中国科学院广州能源研究所. 2008. |
入库方式： OAI收割
来源：广州能源研究所
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