Study on Catalytic Pyrolysis of Rice Straw for Bio-oil Production

IF 3.1 3区工程技术 Q3 ENERGY & FUELS

BioEnergy Research Pub Date : 2025-05-24 DOI:10.1007/s12155-025-10852-w

Roshan Bhurse, Neha Gautam, Nidhi Singh, Ashish Chaurasia

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Abstract

This study made use of rice straws to produce bio-oil through a catalytic pyrolysis process using both laboratory-scale fixed bed catalytic reactor and bench-scale auger pyrolysis reactor at a temperature ranging from 450 to 600 °C. The amount of bio-oil rose from 38.48 to 40.15 weight % in batch reactor while it rose from 31.7 to 34.6 weight % in auger reactor when the temperature rose from 450 to 500 °C because of an increase in the conversion of char into volatiles and gases. The catalytic cracking of bio-oil was investigated using kaolin and bentonite–supported nickel (Ni/kaolin, Ni/bentonite) catalyst to upgrade bio-oil. The Ni/kaolin-6 catalyst was found to be the most superior catalyst for reduction of the oxygen content of bio-oil from 50.4 ± 0.50% to 38.85 ± 0.39% and has a highest HHV value of 22.60 ± 1.13 MJ/kg. The FTIR and GCMS results show that Ni/kaolin-6 catalyst is the most superior for reducing the existence of aldehyde, ketone and alkenes while increasing the existence of aromatic groups and hydrocarbons in bio-oil samples. The hydrocarbon groups in bio-oil such as C-H, phenol and alcohols suggested that it could be utilised as a fuel.

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秸秆催化热解制备生物油的研究

本研究采用实验室规模的固定床催化反应器和实验室规模的螺旋热解反应器，在450 ~ 600℃的温度范围内，利用水稻秸秆进行催化热解生产生物油。当温度从450℃升高到500℃时，由于炭向挥发物和气体的转化增加，间歇式反应器中生物油的质量分数从38.48%提高到40.15%，而螺旋反应器中生物油的质量分数从31.7%提高到34.6%。采用高岭土和膨润土负载镍（Ni/高岭土、Ni/膨润土）催化剂对生物油进行催化裂化改造。结果表明，Ni/高岭土-6催化剂将生物油的氧含量从50.4±0.50%降至38.85±0.39%，最大HHV值为22.60±1.13 MJ/kg。FTIR和GCMS结果表明，Ni/高岭土-6催化剂在减少生物油样品中醛、酮和烯烃的存在，增加芳香族和碳氢化合物的存在方面最优越。生物油中的碳氢化合物基团，如碳氢化合物、苯酚和醇类，表明它可以用作燃料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

BioEnergy Research ENERGY & FUELS-ENVIRONMENTAL SCIENCES

CiteScore

6.70

自引率

8.30%

发文量

174

审稿时长

3 months

期刊介绍： BioEnergy Research fills a void in the rapidly growing area of feedstock biology research related to biomass, biofuels, and bioenergy. The journal publishes a wide range of articles, including peer-reviewed scientific research, reviews, perspectives and commentary, industry news, and government policy updates. Its coverage brings together a uniquely broad combination of disciplines with a common focus on feedstock biology and science, related to biomass, biofeedstock, and bioenergy production.