Liquid-solid axial moving bed reaction and regeneration device, and solid acid alkylation method

A liquid-solid axial moving bed reaction and regeneration apparatus, which is characterized in that the apparatus comprises:

• an axial moving bed reactor, a spent catalyst receiver, a catalyst regenerator and a regenerated catalyst receiver that are successively connected, wherein, a catalyst outlet of the regenerated catalyst receiver is communicated with a catalyst inlet of the axial moving bed reactor;
• wherein, the axial moving bed reactor is provided with at least two catalyst beds that are arranged up and down, the axial moving bed reactor is provided with a feed inlet above each catalyst bed;
• a catalyst delivery pipe is arranged between two adjacent catalyst beds so that the catalyst can move from top to bottom in the axial moving bed reactor;
• the axial moving bed reactor further comprises at least one catalyst regeneration bed;
• the axial moving bed reactor has a catalyst inlet, which is communicated with the top of the first catalyst bed;
• a catalyst inlet and a reaction stream inlet are arranged at the top of each catalyst bed, wherein the catalyst inlet of the first reaction bed is the catalyst inlet of the axial moving bed reactor, the catalyst inlet of the subsequent reaction bed is communicated with the catalyst delivery pipe;
• a catalyst outlet communicated with the catalyst delivery conduit and a reaction stream outlet are arranged at the bottom of each catalyst bed;
• a catalyst inlet communicated with the catalyst delivery conduit and a regeneration medium outlet are arranged at the top of the catalyst regeneration bed;
• a catalyst outlet communicated with the catalyst delivery conduit and a regeneration medium inlet are arranged at the bottom of the catalyst regeneration bed;
• an isolation medium inlet is arranged on the catalyst delivery pipeline for transferring the catalyst from the catalyst regeneration bed to the catalyst bed;
• a separation component is arranged at the bottom of each catalyst bed;
• various beds are communicated with each other through the catalyst delivery pipeline;
• the bottom of the catalyst bed and the regeneration bed are communicated by means of a catalyst delivery conduit that is inserted into the interior of the regeneration bed, and the outlet of the inserted-type catalyst delivery conduit is below the regeneration medium outlet in the regeneration bed;
• the isolation medium inlet and the reaction stream outlet of the last catalyst bed are communicated so that the reaction stream is pressurized with a pump and then used as the isolation medium;
• the reaction stream outlet of the upstream catalyst bed is communicated with an inlet for feeding the reaction stream of the downstream catalyst bed, optionally by means of a communication pipeline, and a fresh reaction feedstock inlet can also be arranged on the communication pipeline;
• the regeneration medium outlet of an upstream catalyst regeneration bed can be communicated with the regeneration medium inlet of a downstream catalyst regeneration bed by means of a pipeline;
• a separation component is provided between two adjacent catalyst beds, and if the catalyst regeneration bed is present as the last bed, a separation component is provided between an upstream catalyst bed and the last catalyst regeneration bed, wherein the inside space of the separation component is communicated with the catalyst delivery pipe, the separation component is for separating a catalyst from a stream after the reaction in the upstream catalyst bed, and the catalyst obtained by the separation with the separation component moves down through the catalyst delivery pipe.