US 2025/0352993 A1 · METHOD AND SYSTEM FOR REGENERATING A CATALYTIC CRACKING CATALYST USING A BIOMASS CHARCOAL FUEL

Abstract

A catalyst regeneration method is suitable for a fluidized catalytic cracking unit has a catalytic cracking reactor and a catalyst regenerator. The regeneration method has the following steps: 1) providing a biomass-derived biomass charcoal; 2) feeding the biomass charcoal and the catalyst to be regenerated from the catalytic cracking reactor into the catalyst regenerator together or separately; 3) introducing an oxygen-containing gas into the catalyst regenerator, wherein the oxygen content of the oxygen-containing gas is 14-28% by volume; and 4) contacting the catalyst to be regenerated with the biomass charcoal and oxygen-containing gas in the catalyst regenerator for coke-burning regeneration. The method can significantly reduce carbon emissions from the catalytic cracking unit, realize the recycling of carbon elements, and provide energy for other process units.

Claims14

Dependent claims

A catalyst regeneration method suitable for a fluidized catalytic cracking unit comprising a catalytic cracking reactor and a catalyst regenerator, wherein the regeneration method comprises the following steps:

1) providing a biomass-derived biomass charcoal;
2) feeding the biomass charcoal and the catalyst to be regenerated from the catalytic cracking reactor into the catalyst regenerator together or separately;
3) introducing an oxygen-containing gas into the catalyst regenerator, wherein the oxygen content of the oxygen-containing gas is 14-28% by volume, preferably, the oxygen-containing gas is selected from air and oxygen diluted with recycled flue gas;
and
4) contacting the catalyst to be regenerated with the biomass charcoal and oxygen-containing gas in the catalyst regenerator for coke-burning regeneration;
preferably, the operating temperature of the catalyst regenerator is in the range of 550-750° C., and the average catalyst residence time is 1.0-15.0 minutes.

3 more elements

A catalyst regeneration system suitable for a fluidized catalytic cracking unit, comprising a biomass processing unit and a catalyst regeneration unit, wherein:

the biomass processing unit is used to process the biomass and optionally the waste tires, such as pyrolysis treatment to obtain biomass charcoal and optional pyrolytic carbon black, and comprises a biomass charcoal generator, a grinder and a storage tank that are connected in sequence, wherein the biomass charcoal generator comprises a biomass feedstock inlet and a product outlet, the product outlet is connected to the inlet of the grinder, and the outlet of the grinder is connected to the inlet of the storage tank;
the catalyst regeneration unit is used to regenerate the catalyst to be regenerated from the catalytic cracking reactor, and comprises a catalyst regenerator having at least one solid material inlet, an oxygen-containing gas inlet, a regeneration flue gas outlet and a regenerated catalyst outlet, and
the outlet of the storage tank is connected to the solid material inlet of the catalyst regenerator.

Dependencies are inferred from the claim text.

Method and system for regenerating a catalytic cracking catalyst using a biomass charcoal fuel

Life of this patent

Method and system for regenerating a catalytic cracking catalyst using a biomass charcoal fuel

Life of this patent

Abstract

Claims14