Liquid-solid radial moving bed reaction device and solid acid alkylation method

A liquid-solid radial moving bed reaction apparatus, wherein the apparatus comprises:

• a radial moving bed reactor, a spent catalyst receiver, a catalyst regenerator, and a regenerated catalyst receiver that are successively connected, wherein a catalyst discharging outlet of the regenerated catalyst receiver is communicated with a catalyst inlet of the radial moving bed reactor;
• characterized in that:
• the radial moving bed reactor is provided with at least two reaction beds and at least one regeneration bed, the at least two reaction beds and the at least one regeneration bed are arranged up and down in the radial moving bed reactor;
• each reaction bed comprises a reaction stream distribution zone, a catalyst bed of the reaction bed, and a stream-after-the-reaction collection zone that are arranged in the radial moving bed reactor such that a reaction stream flows radially inward from the reaction stream distribution zone to the stream-after-the-reaction collection zone or flows radially outward from the reaction stream distribution zone to the stream-after-the-reaction collection zone, and
• each reaction bed has a reaction stream feeding pipeline and a stream-after-the-reaction withdrawing pipe,
• reaction stream spaces are arranged between two reaction beds and between a first reaction bed and a top catalyst collection zone,
• each reaction stream distribution zone is communicated through the corresponding reaction stream space with the corresponding reaction stream feeding pipeline;
• and a component-based mixer is arranged on the corresponding reaction stream feeding pipeline of each corresponding reaction bed;
• the stream-after-the-reaction collection zone for a reaction bed is communicated with the stream-after-the-reaction withdrawing pipe for the corresponding reaction bed;
• wherein the component-based mixer consists of a recycled stream pipe at an upper part, a reaction stream feeding pipe at a lower part, and a fresh feedstock feeding pipe extending into the reaction stream feeding pipeline, a nozzle of the fresh feedstock feeding pipe is arranged at an outlet of the fresh feedstock feeding pipe, a filler and/or a mixing fin is arranged in the reaction stream feeding pipeline, wherein the component-based mixer is located outside the radial moving bed reactor;
• each regeneration bed comprises a regeneration medium distribution zone, a catalyst bed of the regeneration bed, and a regeneration medium collection zone, and each regeneration bed has a regeneration medium feeding pipe and a regeneration medium withdrawing pipe, wherein the regeneration medium distribution zone is communicated via a regeneration medium space with the regeneration medium feeding pipe, and the regeneration medium collection zone is communicated with the regeneration medium withdrawing pipe;
• and
• any two adjacent beds of the at least two reaction beds and the at least one regeneration bed are communicated through a catalyst delivery pipe so that a catalyst can move in the radial moving bed reactor from top to bottom;
• the catalyst in the at least two reaction beds and the catalyst in the at least one regeneration bed fall through the catalyst delivery pipe from a previous bed to a next bed, finally, fall to a bottom catalyst-collecting area, and leave the radial moving bed reactor.