| 沥青质热裂解、临氢热裂解和临氢催化裂解反应动力学 |
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| 引用本文： | 赵迎宪,危 凤,李达.沥青质热裂解、临氢热裂解和临氢催化裂解反应动力学[J].石油学报(石油加工),2011,27(5):753-759. |
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| 作者姓名： | 赵迎宪 危 凤 李达 |
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| 作者单位： | 浙江大学宁波理工学院; |
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| 基金项目： | 国家自然科学基金项目(20673009); 浙江省自然科学基金项目(Y4110276)资助 |
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| 摘 要： | 实验考察了1种正戊烷不溶解的沥青质在703 K下的热裂解、临氢热裂解和由 NiMo/γ-Al2O3催化的临氢裂解反应。3种沥青质转化反应都能较好地吻合二级反应动力学，得到的表观速率常数分别为1.704×10-2、 2.435×10-2和9.360×10-2。建立三集总动力学模型，用于求解沥青质裂解转化生成液体油反应速率常数(k1)和与之平行的生成焦炭＋气体反应速率常数（k3），以及由液体产物继续转化生成焦炭＋气体的反应速率常数（k2）。对沥青质热裂解、临氢热裂解和临氢催化裂解反应，速率常数 k1分别为1.697×10-2、 2.430×10-2和9.355×10-2， k2分别为3.605×10-2、 2.426×10-2和6.347×10-3, k3分别为6.934×10-5、 5.416×10-5和4.803×10-5。
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| 关 键 词： | 沥青质 热裂解 临氢热裂解 临氢催化裂解 动力学 |
| 收稿时间： | 2010-8-23 |
| 修稿时间： | 2011-8-4 |
Kinetics of the Thermal Cracking,Thermal Hydrocracking and Catalytic Hydrocracking of Asphaltene |
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| ZHAO Yingxian,WEI Feng,LI Da.Kinetics of the Thermal Cracking,Thermal Hydrocracking and Catalytic Hydrocracking of Asphaltene[J].Acta Petrolei Sinica (Petroleum Processing Section),2011,27(5):753-759. |
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| Authors: | ZHAO Yingxian WEI Feng LI Da |
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| Affiliation: | ZHAO Yingxian,WEI Feng,LI Da(Ningbo Institute of Technology,Zhejiang University,Ningbo 315100,China) |
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| Abstract: | A pentane-insoluble asphaltene was processed by thermal cracking, thermal hydrocracking and catalytic hydrocracking over NiMo/γ-Al2O3 in a microbatch reactor at 703 K, respectively. The experimental data of asphaltene conversion fit the second-order kinetics adequately, to give the apparent rate constants of 1.704×10-2, 2.435×10-2 and 9.360×10-2 for the three cracking processes, respectively. A three-lump kinetic model was proposed and solved to evaluate the rate constants of parallel reactions of asphaltenes to liquid oil (k1) and gas+coke (k3), and of consecutive reaction from liquid to gas+coke (k2). The evaluated k1 was 1.697×10-2, 2.430×10-2 and 9.355×10-2, k2 was 3.605×10-2, 2.426×10-2 and 6.347×10-3, and k3 was 6.934×10-5, 5.416×10-5 and 4.803×10-5 for asphaltene thermal cracking, thermal hydrocracking and catalytic hydrocracking, respectively. |
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| Keywords: | asphaltene thermal cracking thermal hydrocracking catalytic hydrocracking kinetics |
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