从分子水平重新认识 H-载体对热裂解过程的积极影响

IF 5.8 2区化学 Q1 CHEMISTRY, ANALYTICAL

Journal of Analytical and Applied Pyrolysis Pub Date : 2024-10-01 DOI:10.1016/j.jaap.2024.106776

Li Jiguang, Cai Xinheng, Hou Huandi, Ren Jiahao, Xu Ke, Wang Wei

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引用次数: 0

摘要

对真空残渣（VR）在 420 ℃、不同反应时间下的热裂解反应进行了研究，以评估工业 H-载体在分子水平上对热裂解过程的影响。分析了质量分布、转化率、沥青质和焦炭产率，以评估其变化规律。分析了 H-载体的芳香结构，推测了其典型结构，并计算了这些模型化合物的键能。可以得出结论，炼油厂馏分流中的 460℃馏分含有丰富的 H-载体。通过分析进料和产品中沥青质的结构，可以得出结论：H-载体不仅能改变沥青质的结构，还能提高沥青质的溶解度。

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A new insight into H-donor’s positive effect on thermal cracking process at molecular level

Thermal cracking reactions of vacuum residue (VR) at 420 ℃ with different reaction time were carried out to evaluate an industrial H-donor’s effect on thermal cracking process at molecular level. The mass distribution, conversion ratio, asphaltene and coke yields were analyzed to evaluate the changing rules. Aromatic structures of H-donor were analyzed and its typical structures were speculated, and the bond energy of those model compounds were calculated. It can be concluded that the >460℃ fractions from a refinery stream have abundant H-donors. From analyzing the structures of asphaltenes for the feed and products, it can be learned that H-donors not only can modify the asphaltene structures but also can improve the asphaltene solubility.

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来源期刊

Journal of Analytical and Applied Pyrolysis 化学-分析化学

CiteScore

9.10

自引率

11.70%

发文量

340

审稿时长

44 days

期刊介绍： The Journal of Analytical and Applied Pyrolysis (JAAP) is devoted to the publication of papers dealing with innovative applications of pyrolysis processes, the characterization of products related to pyrolysis reactions, and investigations of reaction mechanism. To be considered by JAAP, a manuscript should present significant progress in these topics. The novelty must be satisfactorily argued in the cover letter. A manuscript with a cover letter to the editor not addressing the novelty is likely to be rejected without review.