Production of bio-olefins from fatty acid methyl esters via hydrodeoxygenation and sequential steam cracking

SUN Peiyong; WANG Haixing; ZHOU Yupeng; ZHANG Shenghong; YAO Zhilong

doi:10.11949/j.issn.0438-1157.20171344

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Production of bio-olefins from fatty acid methyl esters via hydrodeoxygenation and sequential steam cracking

更新时间：2025-12-10

- Production of bio-olefins from fatty acid methyl esters via hydrodeoxygenation and sequential steam cracking
- CIESC Journal Issue 6, Pages: 2496-2502(2018)
- 作者机构：
  
  北京石油化工学院化学工程学院, 恩泽生物质精细化工北京市重点实验室,北京,102617
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171344
  CLC： 643.32
- Online First：05 June 2018，
  
  Published：05 June 2018
- 稿件说明：
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SUN Peiyong, WANG Haixing, ZHOU Yupeng, et al. Production of bio-olefins from fatty acid methyl esters via hydrodeoxygenation and sequential steam cracking[J]. CIESC Journal, 2018, (6): 2496-2502.
DOI：

SUN Peiyong, WANG Haixing, ZHOU Yupeng, et al. Production of bio-olefins from fatty acid methyl esters via hydrodeoxygenation and sequential steam cracking[J]. CIESC Journal, 2018, (6): 2496-2502. DOI： 10.11949/j.issn.0438-1157.20171344.

摘要

脂肪酸甲酯经生物烷烃制备轻质烯烃，有望缓解低原油价格导致的生物柴油产业发展困境。采用浸渍法制备了NiMo/Al2O3催化剂，首先考察其催化脂肪酸甲酯加氢脱氧制备生物烷烃的性能，然后进一步分析生物烷烃蒸汽裂解制烯烃的转化规律。结果表明，预硫化的NiMo/Al2O3能够高选择性地催化饱和脂肪酸甲酯加氢制备生物烷烃，并且催化剂的结构在反应1000 h后无明显改变。以上述烷烃为原料，在裂解炉出口温度为810℃，出口压力为0.10 MPa，物料停留时间为0.23 s和水油质量比为0.75的反应条件下进行蒸汽裂解，产物中乙烯、丙烯和丁二烯的收率分别达到36.30%、18.14%和7.46%，显著高于同等条件下石脑油原料得到的27.45%、14.74%和5.31%，表明源于脂肪酸甲酯的生物烷烃可以作为生产轻质烯烃的原料补充。

Abstract

Conversion of fatty acid methyl esters (FAMEs) to bio-paraffins and further to bio-olefins offers a potential solution to the emerging problems in the biodiesel industry due to the collapse of world oil prices. NiMo/Al2O3 catalyst prepared via an impregnation method was evaluated in the catalytic hydrodeoxygenation of FAMEs to bio-paraffins. The obtained paraffins were used as feedstocks to produce bio-olefins via steam cracking. The presulfided NiMo/Al2O3 converted the saturated FAMEs selectively to paraffins

without observable changes in the catalyst structure after reaction for 1000 h. Under the cracking conditions of coil-out temperature and pressure at 810℃ and 0.10 MPa

residence time at 0.23 s

and mass ratio of water to paraffins at 0.75

the yields of ethylene

propylene and butadiene were 36.30%

18.14% and 7.46%

respectively. These data were much higher than the values of 27.45%

14.74% and 5.31% obtained with naphtha as feedstocks under the similar conditions

indicating that bio-paraffins derived from FAMEs are alternative feedstocks for light olefins.

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