Slurry bed reactor catalyst distribution method and system

Abstract

The invention relates to the field of reactor catalyst distribution. The invention discloses a slurry bed reactor catalyst distribution method and a slurry bed reactor catalyst distribution system. The method comprises the step that in a Fischer-Tropsch synthesis reaction process, when the temperature difference or the pressure difference between the upper section and the lower section of a slurrybed reactor exceeds a set value, part of the catalyst in the slurry bed reactor is led out from catalyst pipelines arranged at the upper section, the middle section and the lower section of the slurry bed reactor to be subjected to back-mixing outside the reactor, and returns to the slurry bed reactor, so that the temperature difference and the pressure difference of the upper section and the lower section of the slurry bed reactor are smaller than set values, wherein the set values comprise a temperature difference set value and a pressure difference set value, and the set value of the temperature difference is 2-10 DEG C, and the set value of the pressure difference is 0.3-1.5MPa. According to the method, uniform distribution of the catalyst in the slurry bed reactor is realized, and stabilization of the temperature in the reactor is facilitated.

Description

technical field [0001] The invention relates to the field of reactor catalyst distribution, in particular to a method and system for slurry bed reactor catalyst distribution. Background technique [0002] The Fischer-Tropsch synthesis reaction is based on synthesis gas (CO and H 2 ) as the raw material under the action of the catalyst to generate a reaction with liquid hydrocarbons as the main product. There are three types of Fischer-Tropsch reactors: fixed bed, fluidized bed, and slurry bed. Among them, the slurry bed reactor has the characteristics of simple structure and operation, uniform mixing of reactants, and good heat transfer performance. Online loading and unloading. The slurry bed reactor is mainly composed of a shell, a gas distributor, a wax filter tube, a catalyst feeding tube, a catalyst discharging tube, a cyclone separator, and a heat exchange tube. [0003] CN107638848A discloses an online catalyst feeding system for a slurry bed reactor, which can con...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a slurry bed reactor catalyst distribution solution in order to overcome the problems of difficult temperature control in the slurry bed reactor and uneven catalyst distribution resulting in unstable operation of the device and low product yield in the prior art. The system of the method, which realizes the uniform distribution of the catalyst inside the slurry bed reactor, which is conducive to stabilizing the temperature inside the reactor

Images