废食用油经活性炭催化热解转化为生物燃料。
Conversion of Waste Cooking Oil into Bio-Fuel via Pyrolysis Using Activated Carbon as a Catalyst.
机构信息
Department of Chemical Engineering, Faculty of Engineering, Thammasat University, Pathumthani 12120, Thailand.
Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Pathumthani 12120, Thailand.
出版信息
Molecules. 2023 Apr 20;28(8):3590. doi: 10.3390/molecules28083590.
The utilization of activated carbon (AC) as a catalyst for a lab-scale pyrolysis process to convert waste cooking oil (WCO) into more valuable hydrocarbon fuels is described. The pyrolysis process was performed with WCO and AC in an oxygen-free batch reactor at room pressure. The effects of process temperature and activated carbon dosage (the AC to WCO ratio) on the yield and composition are discussed systematically. The direct pyrolysis experimental results showed that WCO pyrolyzed at 425 °C yielded 81.7 wt.% bio-oil. When AC was used as a catalyst, a temperature of 400 °C and 1:40 AC:WCO ratio were the optimum conditions for the maximum hydrocarbon bio-oil yield of 83.5 and diesel-like fuel of 45 wt.%, investigated by boiling point distribution. Compared to bio-diesel and diesel properties, bio-oil has a high calorific value (40.20 kJ/g) and a density of 899 kg/m, which are within the bio-diesel standard range, thus demonstrating its potential use as a liquid bio-fuel after certain upgradation processes. The study revealed that the optimum AC dosage promoted the thermal cracking of WCO at a reduced process temperature with a higher yield and improved quality compared to noncatalytic bio-oil.
本文描述了一种在实验室规模的热解过程中，将废食用油（WCO）转化为更有价值的碳氢燃料的方法，该方法利用活性炭（AC）作为催化剂。在无氧的间歇式反应器中，在室温和常压下，通过 WCO 和 AC 进行热解过程。系统地讨论了工艺温度和活性炭用量（AC 与 WCO 的比例）对产率和组成的影响。直接热解实验结果表明，WCO 在 425°C 下热解可得到 81.7wt.%的生物油。当使用 AC 作为催化剂时，在 400°C 和 AC:WCO 比例为 1:40 的最佳条件下，可得到最大的烃类生物油产率为 83.5%，柴油样燃料产率为 45wt.%，这是通过沸点分布来考察的。与生物柴油和柴油的性质相比，生物油的热值（40.20kJ/g）和密度（899kg/m）较高，均在生物柴油标准范围内，因此，在经过一定的升级处理后，它具有作为液体生物燃料的潜力。研究表明，与非催化生物油相比，最佳的 AC 用量在降低的工艺温度下促进了 WCO 的热裂化，从而提高了产率和改善了质量。
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