Cyclone separator and separation system suppressing coking on outer wall of riser

Abstract

A cyclone separator and a separation system suppressing coking on an outer wall of a riser are disclosed. The cyclone separator includes a cylinder body the upper end of which is provided with a feeding portion, and the top of which is provided with a top plate; a riser at least partially disposed in the cylinder body, with one end of the riser in the cylinder body being provided with a gas inlet;a convex ring which fixedly sleeves the riser, which protrudes radially along the riser, which is disposed below the top plate, which is disposed in an annular space formed by the inner wall of the cylinder body and the outer wall of the riser, and which is at least partially aligned with the feeding portion in the radial direction; and a communication portion on the wall of the riser, wherein the communication portion communicates the inside and outside of the riser, and is on the upstream of the gas inlet and downstream of the convex ring. The cyclone separator and the separation system caneffectively reduce pressure drop and energy consumption, and destroy a low-speed boundary layer of the outer wall of the riser while not reducing the separation efficiency, thus preventing coking andparticle deposition, and ensuring long-period operation of equipment. The cyclone separator and the separation system are simple in structure and easy to implement.

Description

technical field [0001] The application relates to the technical field of multiphase separation of gas and solid particles / droplets, in particular to a cyclone separator and a separation system for suppressing coking on the outer wall of a gas riser. Background technique [0002] The descriptions in this section merely provide background information related to the disclosure in this application and may not constitute prior art. [0003] The cyclone separator can use the centrifugal force generated when the gas-solid phase material with a certain flow rate rotates to separate solid particles and liquid droplets from the air flow, so as to achieve the purpose of separating solid particles / liquid droplets from gas. In the reaction settler of the fluidized catalytic cracking unit in the petrochemical industry, the cyclone separator is mainly used to separate and recover the precious catalyst particles in the settler, which is to reduce the solid catalyst content in the oil and ga...

AI Technical Summary

Problems solved by technology

However, once the coked coke on the outer wall of the gas riser falls off, it may block the discharge system of the cyclone separator, which may reduce the separation efficiency of the cyclone separator, or cause the cyclone separator to lose the function of separating catalyst particles, forcing the entire catalytic cracking system The unplanned shutdown of the device for coke cleaning caused huge economic losses to the production of the catalytic device

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