Arrangements for removing entrained catalyst particulates from gas

Abstract

An arrangement for removing entrained catalyst particulates from a gas may include a pressure vessel, a filter assembly, and a dip leg. The pressure vessel may contain a fluidized bed of catalyst particulates suspended in the gas. Some of the gas and entrained catalyst particulates may be directed to the filter assembly where the entrained catalyst particulates are filtered from the gas by a filter medium. The catalyst particulates pass generally tangentially along a feed side of the filter medium, where they scour the feed side of the filter medium, and then pass into the dip tube which guides the catalyst particulates away from the filter medium.

Description

technical field [0001] The present invention relates to apparatus for removing entrained catalyst particles from a gas, wherein the gas comprises vapour. Background technique [0002] In the refining and chemical industries, small catalyst particles are used in fluid catalytic cracking systems to process petroleum into more refined hydrocarbons, such as gasoline or diesel fuel. Catalyst particles can be suspended with the petroleum in a fluidized bed inside a reaction vessel where the petroleum is broken down into its more refined hydrocarbon components. Over time, the catalyst particles become clogged with fouling matter, such as coke-like material, which reduces the catalytic effectiveness of the catalyst particles. The catalyst particles must then be regenerated before being reused. The blocked catalyst particles can be conveyed to a regenerator vessel where they are suspended in a fluidized bed of hot gas (eg, hot air) and the foulant is burned off from the catalyst pa...

AI Technical Summary

Problems solved by technology

Over time, the catalyst particles become clogged with fouling such as coke-like substances, which reduces the catalytic effectiveness of the catalyst particles

Images