小球藻热解油在Ni-Cu/ZrO2催化剂上的加氢脱氧

doi:10.3969/j.issn.0438-1157.2014.08.022

化工学报 ›› 2014, Vol. 65 ›› Issue (8): 3004-3011.DOI: 10.3969/j.issn.0438-1157.2014.08.022

• 催化、动力学与反应器 • 上一篇下一篇

小球藻热解油在Ni-Cu/ZrO₂催化剂上的加氢脱氧

张亮¹, 吴曼¹, 杨雅¹, 张秀丽¹, 徐秀峰², 郭庆杰¹

1 青岛科技大学化工学院, 清洁化工过程山东省高校重点实验室, 山东青岛 266042;
2 烟台大学应用催化研究所, 山东烟台 264005

收稿日期:2013-11-22 修回日期:2014-03-12 出版日期:2014-08-05 发布日期:2014-08-05
通讯作者: 郭庆杰
基金资助:
海洋可再生能源专项资金项目（GHME2001SW02）。

Catalytic hydrodeoxygenation of fast pyrolysis bio-oil of chlorella over Ni-Cu/ZrO₂ catalyst

ZHANG Liang¹, WU Man¹, YANG Ya¹, ZHANG Xiuli¹, XU Xiufeng², GUO Qingjie¹

1 Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China;
2 Institute of Applied Catalysis, Yantai University, Yantai 264005, Shandong, China

Received:2013-11-22 Revised:2014-03-12 Online:2014-08-05 Published:2014-08-05
Supported by:
supported by the Special Fund of Marine Renewable Energy (GHME2001SW02).

摘要/Abstract

摘要： 在小型固定床反应器中以Ni-Cu/ZrO₂为催化剂，对小球藻热解油进行催化加氢脱氧，以改善生物油性能。利用XRD、H₂-TPR、TG、NH₃-TPD等技术对催化剂进行了结构表征。结果表明，Cu的加入有效促进了Ni-Cu/ZrO₂催化剂活性相的表面分散，提高了该催化剂对小球藻热解油加氢脱氧反应的催化活性。在2 MPa、350 ℃反应条件下，随Cu/Ni的增大，Ni-Cu/ZrO₂的催化活性先升高后降低，Cu/Ni质量比为0.40时的催化性能最好，连续运行3 h后所得精制生物油脱氧率达82.0%。Ni-Cu/ZrO₂催化剂在反应过程中，表面结焦少，活性粒子及催化剂性能稳定，连续运行24 h后所得精制生物油脱氧率依然维持在77.0%以上。小球藻热解油经催化加氢脱氧所得的精制生物油，低位热值由31.5 MJ·kg^-1提高至35.0 MJ·kg^-1，40℃运动黏度由20.5 mm²·s^-1降至9.5 mm²·s^-1，且油品中水分更易于脱除。精制生物油中高级脂肪酸的含量减少，油品稳定性大幅提高。

关键词: 生物能源, 固定床, 催化剂, 生物油, 加氢脱氧

Abstract: The catalytic hydrodeoxygenation of bio-oil obtained by fast pyrolysis of chlorella over Ni-Cu/ZrO₂ catalyst was carried out in a fixed-bed reactor to improve the quality of the bio-oil. The catalysts were characterized by XRD, H₂-TPR, TG and NH₃-TPD techniques. The results showed that the addition of Cu promoted dispersion of active species, and increased catalytic hydrodeoxygenation activity of Ni-Cu/ZrO₂ catalysts. However, the activity went up first, and then went down with increase of Cu loading. A possible theoretical explanation was also given. At reaction conditions of 2 MPa and 350℃, the performance of Ni-Cu/ZrO₂ catalyst was stable and it made the oxygen content in the bio-oil decreased sharply. For the Ni-Cu/ZrO₂ catalyst with Cu/Ni mass ratio of 0.40, the efficiency of oxygen removal was 82.0% after 3 h reaction and larger than 77.0% after 24 h reaction. The heat value of upgraded bio-oil increased from 31.5 MJ·kg^-1 to 35.0 MJ·kg^-1, while the kinetic viscosity at 40℃ fell from 20.5 mm²·s^-1 to 9.5 mm²·s^-1 after hydrodeoxygenation reaction. In addition, the water in upgraded bio-oil could be removed easily. Furthermore, the stability of upgraded bio-oil was improved significantly due to the reduction of unstable acids.

Key words: bioenergy, fix-bed, catalyst, bio-oil, hydrodeoxygenation reaction

中图分类号:

张亮, 吴曼, 杨雅, 张秀丽, 徐秀峰, 郭庆杰. 小球藻热解油在Ni-Cu/ZrO₂催化剂上的加氢脱氧[J]. 化工学报, 2014, 65(8): 3004-3011.

ZHANG Liang, WU Man, YANG Ya, ZHANG Xiuli, XU Xiufeng, GUO Qingjie. Catalytic hydrodeoxygenation of fast pyrolysis bio-oil of chlorella over Ni-Cu/ZrO₂ catalyst[J]. CIESC Journal, 2014, 65(8): 3004-3011.

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小球藻热解油在Ni-Cu/ZrO₂催化剂上的加氢脱氧

Catalytic hydrodeoxygenation of fast pyrolysis bio-oil of chlorella over Ni-Cu/ZrO₂ catalyst

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