Steam Gasification of Cellulose and Wood in a Fluidized Bed of Porous Clay Particles
Steam Gasification of Cellulose and Wood in a Fluidized Bed of Porous Clay Particles
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多孔粘土颗粒流化床中纤维素和木材的蒸汽气化
DOI：
10.1252/jcej.07we317
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发表时间：
2009
影响因子：
0.8
通讯作者：
M. Horio
中科院分区：
文献类型：
--
作者：
Reiji Noda;Tomoyuki Ito;N. Tanaka;M. Horio
生物质蒸汽气化的潜力与多孔粘土衍生材料，持有焦油在反应器内，以提高气体产量进行了研究。利用实验室规模的流化床反应器，比较了工业催化裂化颗粒、工业活性粘土、轻酸化膨润土、原料膨润土、多孔硅颗粒和硅砂的捕集焦油能力。发现FCC颗粒和所有粘土材料，甚至原料膨润土，都减少了重焦油和水溶性物质的排放，并增加了沉积在床上的碳质物质。活性粘土比多孔二氧化硅能容纳两倍或更多的碳质物质，尽管比表面积几乎相同。在923k下沉积在FCC颗粒上的碳质材料在高于973 K的温度下容易气化。在此基础上，在923-1023 K条件下，在活性粘土或硅砂床上进行了90分钟的木材生物质气化实验。通过捕获的碳质物质气化，活性粘土表现出显著的高能量转化为气体。
Potential of biomass steam gasification with porous clay-derived materials that holds tar inside the reactor to enhance gas production was investigated. Tar capturing ability was compared for commercial FCC particles, commercial activated clay, lightly acidified bentonite, raw bentonite, porous silica particles and silica sand by using a laboratory scale fluidized bed reactor. FCC particles and all clay materials, even raw bentonite, were found to reduce heavy tar and water-soluble species emissions, and to increased carbonaceous materials deposited on the bed materials. The activated clay held two or more times the amounts of carbonaceous materials than porous silica did, although the specific surface areas were almost the same. Carbonaceous materials deposited on FCC particle in 923 K were easily gasified at temperatures greater than 973 K. Following up on these results, wood biomass gasification experiments were carried out at 923–1023 K for 90 min in activated clay or silica sand beds. Activated clay showed significantly high energy conversion to gas by gasification of captured carbonaceous materials.