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›› 2014, Vol. 14 ›› Issue (3): 456-461.

• 过程与工艺 • 上一篇    下一篇

新疆托里油砂的催化热解

张迟 王德民 张贝贝 张静 郎莹 钟梅 马凤云   

  1. 新疆大学化学化工学院 新疆大学化学化工学院 新疆大学化学化工学院 庆华集团新疆和丰能源有限公司 庆华集团新疆和丰能源有限公司 新疆大学化学化工学院 新疆大学化学化工学院
  • 收稿日期:2014-01-07 修回日期:2014-04-21 出版日期:2014-06-20 发布日期:2014-06-20
  • 通讯作者: 钟梅

Catalytic Pyrolysis Behaviors of Xinjiang Tuoli Oil Sand

ZHANG Chi WANG De-min ZHANG Bei-bei ZHANG Jing LANG Ying ZHONG Mei MA Feng-yun   

  1. College of Chemistry and Chemical Engineering, Xinjiang University College of Chemistry and Chemical Engineering, Xinjiang University College of Chemistry and Chemical Engineering, Xinjiang University Xinjiang Hefeng Enegry Co. Ltd. China Kingho Xinjiang Hefeng Enegry Co. Ltd. China Kingho College of Chemistry and Chemical Engineering, Xinjiang University College of Chemistry and Chemical Engineering, Xinjiang University
  • Received:2014-01-07 Revised:2014-04-21 Online:2014-06-20 Published:2014-06-20
  • Contact: ZHONG Mei

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摘要： 利用固定床热解装置，考察了温度、氢气浓度、催化剂种类及催化剂与油砂的接触方式对新疆托里油砂热解特性和油砂油收率的影响及催化剂对热解反应活化能的影响. 结果表明，在N2气氛下，550℃时，油砂油收率最高，达44.52%(w)；热解气氛中H2浓度增加可促进油砂油中饱和分的二次裂解，使油砂油收率减小，烃类气体产率增加，H2浓度为40%(j)时，饱和分含量降至28.96%(w)，较纯N2气氛减少25.43%；以2%(w)的NiO, WO3, ZnO和纳米CuO为催化剂，油砂油产率分别增加15.77%, 16.87%, 3.79%和5.62%；金属氧化物催化剂与油砂的接触方式对油砂油收率有较明显的影响，NiO与油砂分层放置时有利于提高油砂油收率及品质，而纳米CuO和WO3更适合与油砂混合热解；ZnO, NiO和纳米CuO可有效降低油砂热解的活化能.

关键词: 油砂, 热解, 氢气气氛, 催化剂, 饱和分, 活化能

Abstract: Pyrolysis of Xinjiang Tuoli oil sand was studied in a fixed-bed unit, and the effects of temperature, H2 concentration, catalyst type and dosage, and contact mode of catalyst with the oil sand on its pyrolysis characteristics and oil yield were evaluated, and the activation energy was obtained via a thermogravimetric analyzer. The results indicated that the peak value of oil yield [up to 44.52%(w)] was attained at 550℃ in N2 atmosphere. The decrease of oil yield with the inclusion of H2 into the atmosphere was due to the H2-promoted secondary cracking of saturates that led to more pyrolysis gas. When H2 concentration was 40%(j), the yield of saturates decreased to 28.96%(w), 25.43% lower than that in pure N2 atmosphere. Compared with the value without catalyst, the oil yield increased 15.77%, 16.87%, 3.79% and 5.62% with 2%(w) NiO, WO3, ZnO and nano CuO as catalysts, respectively. The contact mode between oil sand and catalyst affected oil yield obviously. The separate setting of NiO with oil sand in layer-by-layer was beneficial to the improvement of oil yield and quality, while nano CuO and WO3 were more suitable to mixing with oil sand in the pyrolysis process. ZnO, NiO and nano CuO could effectively reduce the pyrolysis activation energy of oil sand.

Key words: oil sand, pyrolysis, H2 atmosphere, catalyst, saturates, activation energy

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