高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (11): 2060.doi: 10.7503/cjcu20160309

• 物理化学 • 上一篇    下一篇

无定形硅铝催化生物质热裂解气齐聚合成汽油的特性

张浅1,2, 定明月1(), 张玉兰1,2, 李宇萍1, 王晨光1, 王铁军1(), 马隆龙1   

  1. 1. 中国科学院可再生能源重点实验室, 中国科学院广州能源研究所, 广东省新能源和可再生能源研究开发与应用重点实验室, 广州 510640
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2016-05-05 出版日期:2016-11-10 发布日期:2016-10-17
  • 作者简介:联系人简介: 王铁军, 男, 博士, 研究员, 博士生导师, 主要从事煤及生物质直接和间接液化合成液体燃料技术的研究. E-mail: wangtj@ms.giec.ac.cn; 定明月, 男, 研究员, 主要从事生物质液体燃料合成方面的研究. E-mail: dingmy@ms.giec.ac.cn
  • 基金资助:
    国家自然科学基金(批准号: 51561145010, U1362109)、 国家“九七三”计划项目(批准号: 2013CB228105)和广东省科技计划项目(批准号: 2013B010405012, 2015A010106011, 2016A050502037)资助

Oligomerization of Biomass Cracking Gas to Gasoline Distillates over Amorphous Silica-alumina

ZHANG Qian1,2, DING Mingyue1,*(), ZHANG Yulan1,2, LI Yuping1, WANG Chenguang1, WANG Tiejun1,*(), MA Longlong1   

  1. 1. Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-05-05 Online:2016-11-10 Published:2016-10-17
  • Contact: DING Mingyue,WANG Tiejun E-mail:dingmy@ms.giec.ac.cn;wangtj@ms.giec.ac.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.51561145010, U1362109), the National Key Basic Research Program of China(No.2013CB228105) and the Science and Technology Planning Project of Guangdong Province, China(Nos.2013B010405012, 2015A010106011, 2016A050502037)

摘要:

选取无定形硅铝(ASA)作为生物质热裂解气齐聚反应催化剂, 分析了齐聚反应前后ASA的织构性质、 酸性和积碳行为的变化规律, 并在固定床反应器中评价了ASA在不同反应条件(100~320 ℃, 2.0~4.0 MPa)下的齐聚反应性能. 结果表明, 在不同齐聚反应条件下ASA均有不同程度的酸性损失和积碳, L酸位量损失随着温度升高呈现先降低后增加的趋势, 在280 ℃达到最低; 压力的升高则有利于降低L酸位量的损失. 催化剂积碳量变化与L酸位量变化趋势一致. 在反应过程中, 低碳烯烃转化率和汽油段产物收率随着温度和压力的升高逐渐增大, 在4.0 MPa, 280 ℃反应条件下达到最优, 其乙烯、 丙烯和丁烯的反应转化率分别为19.2%, 37.3%和58.7%, 汽油段产物收率(摩尔分数)为22.9%, C5+的烯烃类选择性可达73.5%.

关键词: 生物质热解气, 富低碳烯烃, 烯烃齐聚, 无定形硅铝, 固定床

Abstract:

The oligomerization performances of biomass cracking gas over amorphous silica-alumina(ASA) were investigated in a fixed bed in the region of 100—320 ℃ and 2.0—4.0 MPa. NH3-TPD, Py-IR, TG, SEM, BET and XRD were used to characterize the surface structures, acidity properties and carbon deposition of catalysts. The results showed that there were different degrees of acid amount loss and carbon deposition for ASA during oligomerization under different reaction conditions. The loss of Lewis acid amount decreased gra-dually with increasing temperature, and reached the minimum at 280 ℃, and then begun to increase with continual increase of temperature. The increase of pressure is beneficial to reduce the Lewis acid loss. The change trend of carbon deposition was consistent with that of Lewis acid loss. During oligomerization, the conversion of light olefins and yield of gasoline range products increased gradually with the increase of temperature and pressure, and reached the maximum at 4.0 MPa and 280 ℃. The conversions of ethylene, propylene and butylene reached 19.2%, 37.3% and 58.7%, respectively. The yield of gasoline range product reached 22.9%(molar fraction), and the selectivity of C5+ olefins reached 73.5%.

Key words: Biomass cracking gas, Riched light olefin, Olefins oligomerization, Amorphous silica-alumina, Fixed-bed reactor

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