Fluidized bed reactor

Abstract

The invention discloses a fluidized bed reactor. The fluidized bed reactor comprises a reactor shell and a circulating unit, wherein the circulating unit is arranged outside the reactor shell; a material outlet which is connected to the circulating unit is formed in the top of the reactor shell; a material inlet which is communicated with the circulating unit is formed in the bottom of the reactor shell; the circulating unit comprises a separator and a circulating pump; the separator is used for separating reaction materials from the top of the reactor shell into gas-phase materials and liquid-phase materials; the circulating pump is used for feeding part of the liquid-phase materials separated by the separator into the reactor shell. The effective volume of the fluidized bed reactor is increased, and the flexibility and stability of operation are improved; meanwhile, by the arrangement of a separation device in the circulating unit, the content of solid particles in the fed materials of the circulating pump is decreased, and abrasion of the circulating pump is reduced, so that the service life of the circulating pump is prolonged.

Description

technical field [0001] The invention relates to an ebullating bed reactor, in particular to an ebullating bed reactor capable of circulating materials outside the body. Background technique [0002] The ebullating bed reactor is a reactor that uses gas or liquid to pass through the granular solid catalyst bed to keep the catalyst in a suspended state, and to perform a three-phase reaction of gas, liquid and solid. The ebullated bed reactor can process heavy and low-quality feed oil with high metal and high asphaltene content, and has the advantages of large space velocity, small bed pressure drop, uniform temperature distribution, good mass and heat transfer effects, and flexible device operation. In addition, fresh catalyst can be added online and deactivated catalyst can be unloaded during operation, so that the activity of the catalyst can be maintained at a high level throughout the operation cycle, and the operation cycle is longer. [0003] US Re25770 describes a typi...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides an ebullating bed reactor to solve the problems of the existing ebullating bed reactor with complex internal structure and low space utilization in the reactor

Images