Gas/solid circulation mixing steam stripper and mixing and steam stripping method of solid particles

Abstract

The invention provides a gas / solid circulation mixing steam stripper and a mixing and steam stripping method of solid particles. The gas / solid circulation mixing steam stripper comprises a cylinder body (7) with an inner cavity, a flow guide cylinder (6), a ring-gap gas distributor (3), a gas distributor (11) of the flow guide cylinder, a gas outlet extending into the inside of the cylinder body (7), a cone (2) connected with the lower end of the cylinder body (7), a mixed solid particle outlet (1) arranged below the cone (2), a loose steam ring (12) which is positioned at the bottom of the cone (2) and is also positioned above the mixed solid particle outlet (1), a first solid particle inlet passage and a second solid particle inlet passage, wherein the first solid particle inlet passage and the second solid particle inlet passage are respectively connected to the inside of the cylinder body. The gas / solid circulation mixing steam stripper is adopted by the mixing and steam stripping method of the solid particles.

Description

technical field [0001] The invention relates to the field of petrochemicals, and relates to the catalyst cooling cycle technology and stripping in the fluidized catalytic cracking process, in particular, to a gas-solid circulating mixed stripper (belonging to a mixer) and a solid particle mixing For the mixing and mixing of two solid particles (between the regenerator and / or between the spent agent) at different temperatures between the riser and the fluidized bed in a fluid catalytic cracking process with the stripping method stripping. Background technique [0002] Fluid catalytic cracking is an important means of secondary processing of crude oil, which has huge economic benefits. The catalytic cracking reaction regeneration system usually consists of a riser reactor, a regenerator and a transfer pipeline. After the raw oil is atomized through the nozzle, it contacts with the high-temperature regenerated catalyst in the riser reactor, gasifies, undergoes thermal crackin...

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Problems solved by technology

[0007] The present invention aims at providing a kind of gas-solid circulation mixing stripper and a kind of solid particle mixing and stripping method, to solve two kinds of solid particles of different temperatures in the fluidized catalytic cracking process (between the regeneration agent and / or to be treated) between raw agents) is difficult to fully mix and heat exchange, and at the same time, the present invention also solves the problem that the prior art cannot carry out stripping while mixing, so that the present invention can fully carry out the mixing and heat exchange of two solid particles At the same time, steam stripping

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