Efficient fluidized catalytic converting steam stripping device

Abstract

The present invention relates to a high-efficiency fluid catalytic conversion stripper. Said equipment comprises cylinder body, interior of said cylinder body is equipped with several layers of baffle plates, lower portion of the cylinder body is equipped with steam inlet, and its upper portion is equipped with waste gas outlet, the interior of said cylinder body is equipped with more tan two stages of stripping stages, the upper portion of said cylinder body is equipped with primary stripper, and the side of cylinder body of said primary stripper is equipped with inlet of catalyst with oil, its lower portion is equipped with steam inlet, and its upper portion is equipped with waste gas outlet, the upper end or lower end of cylinder body of primary stripper can be communicated with the cylinder body of stripper. Said invention can raise the yield rate of light oil.

Description

technical field [0001] The invention belongs to the technical field of auxiliary equipment for a hydrocarbon feedstock fluidized catalytic conversion device, in particular to a high-efficiency fluidized catalytic conversion stripper. Background technique [0002] In the settler of the hydrocarbon feedstock fluidized catalytic conversion device, when the reaction is over, the catalyst after gas-solid separation still entrains some oil and gas, resulting in an increase in the amount of coke, energy consumption, and light oil yield. In this regard, steam stripping is often used to replace the oil and gas in the catalyst. The research results show that if all the oil and gas are replaced from the catalyst, the amount of coke can be reduced by about one-third, and the ratio of hydrogen to carbon in the coke can be reduced to 6%. Currently applied technology is still far from this goal. [0003] The oil-gas displacement and desorption in the stripper is a typical gas-solid phase...

AI Technical Summary

Problems solved by technology

The upper and lower sides of each baffle are filled with catalysts, and there is catalyst exchange between the openings and the gaps between the baffles. The back-mixing of the catalysts on the upper and lower sides of each baffle is obvious, and the oil-gas concentration difference between the gas phase and the catalyst is greatly reduced, making it difficult to improve the stripping effect.

In addition, in the existing technology, although the steam is injected at multiple points, the steam is connected in series up and down in the stripping and directly mixed. After the oily steam in the next stage is mixed with the newly injected steam in the previous stage, the difference in oil and gas concentration between the steam and solid phases is significantly reduced. , affecting the stripping effect

Images