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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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沙特减压渣油临氮热反应过程中沥青质聚集体尺寸变化研究
, PP. 46-52
Keywords: 减压渣油,热反应,生焦率,沥青质聚集体尺寸
Abstract:
？将沙特轻质原油的减压渣油在395℃临氮条件下进行热反应,利用在线取样装置得到不同热反应时间的样品,借助小角x射线散射(saxs)技术,测定了各液相残渣油中沥青质聚集体尺寸。结果表明,热反应生焦诱导期的初期沥青质聚集体的尺寸逐渐减小,为29~21nm;在生焦诱导期后期,其尺寸急剧增大,在热反应进行到150min时达到43nm;达到生焦诱导期后,沥青质聚集体尺寸变化较小,在46~42nm变化。在渣油热反应过程中沥青质聚集体的尺寸受沥青质热裂解、沥青质解缔和缔合等过程的共同影响,与沥青质含量无明显关系。
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