Aromatic hydrocarbons alkylation and liquid-solid circulating fluidized bed for alkylation
AssigneesChina Petro-Chemical Corporation, Tsinghua University, Research Institute of Petroleum Processing, Sinopec
InventorsYong Jin, Wugeng Liang, Zhanwen Wang, Zhiging Yu, Enze Min, Mingyuan He, Zhijian Da
Life of this patent
Estimating the term…
Abstract
Disclosed is a process for continuous alkylation of aromatics or their derivatives in the presence of a solid acid catalyst in a liquid-solid circulating fluidized bed system, said system comprising a liquid-solid cocurrent upflow reactor, a sedimentation washing tower for the used catalyst, a liquid-solid cocurrent upflow regenerator, a sedimentation washing tower for the regenerated catalyst, and two vortical liquid-solid separators. By regeneration of the used catalyst, continuous alkylation process is achieved in this system.
Claims13
A process for continuous alkylation of aromatics in the presence of a solid acid catalyst, comprising
- (a) contacting the reactants with a solid acid catalyst in a liquid-solid concurrent upflow reactor (1);
- (b) passing the liquid-solid mixture consisting of used solid acid catalyst and the unreacted reactants and the products into a vortical liquid-solid separator (2) to give separated used solid acid catalyst;
- (c) passing said separated used solid acid catalyst through a sedimentation washing tower (3) into a liquid-solid concurrent upflow regenerator (4);
- (d) contacting said separated used solid acid catalyst in said regenerator (4) with the regenerating reagent which is a reactant selected from the group comprising aromatics;
- (e) passing the liquid-solid mixture consisting of the regenerated catalyst and the regenerating reagent into a vortical liquid-solid separator (5) to give separated regenerated solid acid catalyst;
- and
- (f) returning the separated regenerated solid acid catalyst to a sedimentation washing tower (6), then into said reactor (1).
Dependencies are inferred from the claim text.