Abstract: Colloidal stability of Liaohe vacuum residuum(LHVR) and Russia M100(M100) was studied by mixture viscosimetry with the colloidal stability parameters of 0.802 and 0.287, respectively. The coke performance of these two residuums was also studied and found that the coke ratios of LHVR and M100 were respectively 28.40% and 11.05% when reacting under 380 ℃ for 90 minutes, the presence of 0.5% alkaline additive in M100 will reduce the coke ratio to 3.07%. The result shows that there is no close relationship between the colloidal stability of residuum and its coke performance. After the coke formation occurs, the coke rate is mainly decided by Kangs carbon residue. The existence of alkaline additive can change the residuum-disperse-system stability, as a result, the coke rate will be cut down, and the product distribution will also be improved.

Key words: Residuum, Colloidal stability, Viscosimetry, Thermal reaction, Additive

摘要： 利用混合物粘度法对辽河减压渣油（LHVR）、俄罗斯M100（M100）的胶体稳定性进行研究，其胶体稳定性参数分别为0.802和0.287。对两种渣油的生焦性能进行研究，在相同的反应温度（380 ℃），反应时间达到90 min时，LHVR和M100的生焦率分别为28.40%和11.05%。将质量分数为0.5%的碱性添加剂注入到M100中，反应时间为90 min时，生焦率为3.07%。结果表明，生焦诱导期后，渣油胶体稳定性与其生焦性能之间不存在对应关系，其生焦率的大小主要取决于原料的康氏残炭值，碱性添加剂能够改变渣油中分散体系的稳定性，从而降低生焦率，改善产品分布。

关键词: 渣油, 胶体稳定性, 粘度法, 热反应, 添加剂