燃料化学学报2017，Vol.45Issue(2)：165-171,7.
劣质渣油性质对受热生焦趋势影响的研究
Effect of characteristics of inferior residues on thermal coke induction periods
摘要
Abstract
Using 4 inferior residual oils as raw materials, the effect of feedstock properties on the characteristics of coke formation during initial thermal conversion process was studied. The results show that the influence for coke induction period of different oils affected by temperature can be measured with the sensitivity parameters. The shorter the coke induction period of the residue, the bigger the sensitivity parameter. The coke induction period has a higher decrease rate with the reaction temperature rising. The coke formation property generally depends on feedstock's basic properties, and the influence of various properties of inferior residual oils on coke formation is different under the same reaction conditions. Carbon residue, ash, relative molecular mass, asphaltene precipitation onset point and stability parameter have strong correlations with the coke induction period, especially for the colloidal stability of oil reflected by asphaltene precipitation onset point and stability parameter. The colloidal stability of the inferior residual oils is related to the coke formation characteristics. The worse the stability of the residue, the more likely the coke is to form. The coke forming process is a gradual destruction of the colloid system during thermal reaction.关键词
劣质渣油/延迟焦化/性质/生焦诱导期/胶体稳定性Key words
inferior residue/delayed coking/characteristic/coke induction period/colloidal stability分类
能源科技引用本文复制引用
焦守辉,林祥钦,郭爱军,陈坤,王宗贤,佟佳俊,耿羽轩,李若萌,刘晴昊..劣质渣油性质对受热生焦趋势影响的研究[J].燃料化学学报,2017,45(2):165-171,7.基金项目
The project was supported by the National Natural Science Foundation of China ( U1362101) and the Provincial Natural Science Foundation of Shandong (ZR2014BQ030).国家自然科学基金(U1362101)和山东省自然科学基金(ZR2014BQ030)资助本文的英文电子版由Elsevier出版社在ScienceDirect上出版(http://www. sciencedirect. com/science/journal/18725813) （ U1362101）
