本文關(guān)鍵詞： 甘油 重整 制氫 催化劑　出處：《華東理工大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：本文采取水蒸氣催化重整法在固定床中對(duì)甘油進(jìn)行重整以制取氫氣,研究了甘油在不同催化劑上的重整工藝條件,為生物柴油副產(chǎn)物--甘油的有效利用及重整制氫工業(yè)化應(yīng)用作了有益的探索。研究了以木炭作為催化劑催化甘油重整的反應(yīng),考察了常壓下反應(yīng)溫度、質(zhì)量空速(WHSV)和水碳比(S/C)等因素對(duì)反應(yīng)的影響。研究表明木炭催化甘油重整相較于木炭灰、石英砂等有較好的催化活性。在反應(yīng)條件為溫度800℃、WHSV為1.5h-1、 S/C為4：1的操作條件下,氫產(chǎn)率、潛在氫產(chǎn)率分別達(dá)到75.12%與84.31%,氣相碳轉(zhuǎn)換率達(dá)到89.08%。采用浸漬法制取Co-La-Ni/Al2O3金屬催化劑對(duì)甘油進(jìn)行了催化重整研究,考察了反應(yīng)溫度、S/C和WHSV對(duì)甘油重整反應(yīng)的影響。研究表明反應(yīng)溫度及S/C的升高有助于氫產(chǎn)率、潛在氫產(chǎn)率及氣相碳轉(zhuǎn)化率的提高,Co-La-Ni/Al2O3對(duì)甘油氣化重整反應(yīng)具有較好的催化作用。在溫度為700℃、WHSV為2.5h-1與S/C為3：1的條件下,氫產(chǎn)率、潛在氫產(chǎn)率分別達(dá)到77.64%與89.64%,氣相碳轉(zhuǎn)換率達(dá)到96.36%。由于催化劑容易積碳失活,采用了木炭和金屬催化兩段重整的制氫系統(tǒng)。研究表明,采用兩段重整,不但提高了重整效果,而且可以延長(zhǎng)金屬催化劑使用壽命。在溫度為700℃、WHSV為2.5h-1與S/C為3：1的相同條件下分別使用木炭、Co-La-Ni/Al2O3和木炭與Co-La-Ni/Al2O3共同催化甘油重整,通過(guò)GC/MS對(duì)重整的液體產(chǎn)物進(jìn)行分析,據(jù)此推斷其可能的催化反應(yīng)路徑。結(jié)果表明催化劑的選擇改變了甘油的反應(yīng)路徑和液體產(chǎn)物的選擇性。
[Abstract]:In this paper, the reforming conditions of glycerol on different catalysts were studied by reforming glycerol in a fixed bed to produce hydrogen by steam catalytic reforming. The effective utilization of glycerol, a by-product of biodiesel, and the industrial application of reforming hydrogen to hydrogen were explored. The catalytic reforming of glycerol with charcoal as catalyst was studied, and the reaction temperature at atmospheric pressure was investigated. The effects of mass space velocity (WHSVV) and water-carbon ratio (S / C) on the reaction were studied. The results show that the catalytic glycerol reforming of charcoal has better catalytic activity than that of charcoal ash and quartz sand. The reaction conditions are as follows: temperature 800 鈩，

本文編號(hào)：1530313