Processes for removing entrained particulates from a gas

A process for removing entrained particulates from a gas comprising:

• conducting a chemical reaction in a vessel, including suspending particulates in a gas in a fluidized bed in the vessel;
• directing a portion of the gas and entrained particulates to a permeable filter medium;
• filtering the entrained particulates from the gas, including directing the gas from a feed side of the filter medium through the filter medium to a filtrate side of the filter medium and directing at least a portion of the entrained particulates generally tangentially along the feed side of the filter medium to scour the feed side of the filter medium;
• and
• directing the particulates from the feed side of the filter medium into a dip leg.

A process for removing catalyst particulates from a gas comprising:

• regenerating catalyst particulates, including suspending catalyst particulates in a hot gas in a fluidized bed in a regenerator vessel;
• directing a portion of the gas and entrained catalyst particulates to a feed side of a permeable filter medium in the regenerator vessel;
• filtering the entrained catalyst particulates from the gas in the regenerator vessel, including directing the gas from the feed side of the filter medium through the filter medium to a filtrate side of the filter medium and directing at least a portion of the entrained catalyst particulates generally tangentially along the feed side of the filter medium to scour the feed side of the filter medium;
• discharging the filtered gas from the regenerator vessel;
• and
• directing the catalyst particulates from the feed side of the filter medium into a dip leg in the regenerator vessel.