首页>
外国专利>
Passivation of metal contaminated cracking catalysts using aqueous suspensions of antimony oxide
Passivation of metal contaminated cracking catalysts using aqueous suspensions of antimony oxide
展开▼
机译:使用氧化锑的水悬浮液对金属污染的裂化催化剂进行钝化
展开▼
页面导航
摘要
著录项
相似文献
摘要
This invention comprises improvements to processes for the catalytic cracking of hydrocarbon feedstocks. One such improvement to catalytic cracking processes provides compositions comprising metals passivating agents having an increased degree of stability. These compositions comprise aqueous suspensions of antimony by vinyl copolymers, aqueous suspensions of antimony oxide by diesters of phosphoric acid, or aqueous suspensions of antimony oxide by cellulose derivatives. Another improvement to catalytic cracking processes provides a process for reducing the viscosity of liquid suspensions of metals passivating agents without substantially reducing the stability of the liquid suspension by the utilization of at least two different particle ranges of metals passivating agents. A further improvement to catalytic cracking processes provides an efficient utilization of metals passivating agents by introducing the selected agent into the catalyst regeneration cycle of a catalytic cracking unit.
展开▼