A suspended bed reactor and a method for realizing liquid phase self-circulation using the reactor

Abstract

The invention provides a suspended bed reactor and a method for realizing liquid phase self circulation by using the same. The reactor comprises a reactor shell and a liquid-phase circulation pipe and an inlet jet distributor which are arranged in the shell; the inlet jet distributor includes an annular boss and a guiding object, the annular boss is arranged on the inner side wall of the shell near a liquid flow inlet, the guiding object is arranged above the liquid flow inlet, the largest outer diameter of the guiding object and the smallest inner diameter of the annular boss are arranged in a relative manner to make the aperture diameter of a liquid inlet channel formed between the guiding object and the annular boss smallest. According to the suspended bed reactor, with use of self pressure energy of inlet materials and pressure energy generated by the difference of the densities of the interior and the exterior of the liquid-phase circulation pipe, liquid phase self circulation in the reactor is formed, not only can the linear speed of a liquid phase be improved to facilitate coke discharging, but also the axial temperature difference of the reactor can be reduced, and the reaction released heat can be used for heating an inlet feed material. At the same time, the interior of the reactor has no flow dead zone, and coking can be effectively reduced or even avoided.

Description

technical field [0001] The invention relates to the technical fields of coal chemical industry and petrochemical industry, in particular to a suspended bed reactor and a method for realizing liquid phase self-circulation by using the reactor. Background technique [0002] Hydrogenation is an important technical process that can realize the lightening of inferior and heavy raw materials. Through hydrogenation, inferior and heavy oil products can complete desulfurization, denitrogenation, demetallization, residual carbon removal and degumming asphalt qualitative reaction process. In the current industrial production, the reactor commonly used in the hydroprocessing process is a downflow fixed-bed reactor, that is, a trickle-bed reactor. Vacuum residual oil, coal tar, heavy crude oil, catalytic oil slurry, etc. have high impurity content, which may easily cause poisoning or blockage of the catalyst in the fixed bed reactor, making the device unable to operate normally for a lo...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of coking and coking difficulty existing in the existing suspended bed reactor, and further provide a suspension bed that reduces coking and facilitates coking by promoting the self-circulation of the liquid phase in the reactor Reactor and method for realizing liquid phase self-circulation by utilizing the reactor

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