Regeneration and activation of catalysts for carbon and syngas production
AssigneeQatar Foundation for Education, Science and Community Development
InventorsNimir O. Elbashir, Mohamed Sufiyan A. Challiwala, Hanif Ahmed Choudhury
Life of this patent
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Abstract
A method to regenerate and reactivate catalysts used for a carbon and syngas production reaction including a DRM or CARGEN reaction is developed. Carbon dioxide (CO2) is used as the regeneration and activation media. This method of a single step regeneration and activation using CO2 is more effective than the existing conventional two-step process that includes separate reduction and oxidation steps. This method produces pure carbon monoxide (CO) as a byproduct from the regeneration process by utilizing CO2 and carbon.
Claims20
A method of regenerating or reactivating a catalyst used in a reforming reaction, the method comprising:
- providing the catalyst in a reactor, wherein the catalyst was used in a carbon and syngas production reaction;
- providing a first oxidizing gas comprising CO2 to the reactor for regeneration or reactivation of the catalyst;
- and
- providing to the reactor a second oxidizing gas comprising CO2 and O2 for the regeneration or reactivation of the catalyst,
- wherein the catalyst is not further reduced for the regeneration or reactivation of the catalyst.
A process comprising:
- providing a first catalyst in a first reactor for a first carbon and syngas production reaction;
- providing a first mixed gas comprising CH4 and CO2 in the first reactor for the first carbon and syngas production reaction;
- allowing a first reacted gas from the first carbon and syngas production reaction to leave the first reactor;
- and
- providing a first oxidizing gas comprising CO2 to the first reactor for a first regeneration or reactivation of the first catalyst,
- wherein the first catalyst is not further reduced for the first regeneration or reactivation of the first catalyst.
A process comprising:
- providing a first catalyst in a first reactor for a first Dry Reforming of Methane reaction or a first CARGEN reaction;
- providing a first mixed gas comprising CH4 and CO2 in the first reactor for the first Dry Reforming of Methane reaction or the first CARGEN reaction);
- allowing a first reacted gas from the first Dry Reforming of Methane reaction or the first CARGEN reaction to leave the first reactor;
- providing a first oxidizing gas comprising CO2 to the first reactor for a first regeneration or reactivation reaction of the first catalyst;
- providing a second catalyst in a second reactor for a second Dry Reforming of Methane reaction or a second CARGEN reaction;
- providing a second mixed gas comprising CH4 and CO2 in the second reactor for the second Dry Reforming of Methane reaction or the second CARGEN reaction;
- allowing a second reacted gas from the second Dry Reforming of Methane reaction or the second CARGEN reaction to leave the second reactor;
- providing a second oxidizing gas comprising CO2 to the second reactor for a second regeneration or reactivation reaction of the second catalyst.
Dependencies are inferred from the claim text.