Suspended bed reactor with liquid phase self-circulation function

Abstract

The invention provides a suspended bed reactor with a liquid phase self-circulation function. The suspended bed reactor comprises a reactor cylinder, a jet device and a liquid collector; the reactor cylinder is vertically arranged, and an inlet and an outlet are respectively formed in the bottom and the top of the reactor cylinder; the jet device comprises a spray nozzle, a suction chamber and a diffuser pipe and is arranged outside the reactor cylinder, and the diffuser pipe is connected with an inlet of the reactor cylinder; the liquid collector is used for collecting a liquid phase at the top of the reactor cylinder; a liquid phase circulating pipe is communicated with the bottom of the liquid collector, and the suction chamber is communicated with the other end of the liquid phase circulating pipe. The suspended bed reactor provided by the invention has the beneficial effects that coking can be effectively reduced or even avoided; the continuous liquid phase circulation can be formed between the inlet and the outlet of the suspended bed reactor, so that not only can the liquid phase line speed in the reactor be favorably improved to facilitate coke discharge, but also the axialtemperature difference can be reduced; reactive heat is used for heating inlet feed, so that the raw material temperature of the reactor liquid flow inlet is reduced.

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 with liquid phase self-circulation function. Background technique [0002] Hydrogenation is an important technical process that can realize the lightening of inferior and heavy raw materials. Through hydroprocessing, inferior and heavy oil products can be desulfurized, denitrified, demetallized, decarbonized and degummed asphalt. qualitative reaction process. In the current industrial production, the reactor commonly used in the hydrotreating process is a downflow fixed bed reactor, that is, a trickle bed reactor. The catalyst is added to the reactor at one time before the start of operation. Vacuum residue, coal tar, heavy crude oil, catalytic oil slurry, etc. have high impurity content, which can easily cause poisoning or blockage of the catalyst in the fixed-bed reactor, which makes the device unable to operat...

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

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