Several methods are employed to remove coke from catalysts, each with its own advantages and limitations. Some of the most common methods include:
Thermal Regeneration: This involves heating the coked catalyst in the presence of an oxidizing agent, often air or oxygen, to burn off the carbon deposits. Steam Gasification: In this method, steam is used to convert the carbon into synthesis gas (a mixture of carbon monoxide and hydrogen), effectively cleaning the catalyst surface. Hydrogenation: Here, hydrogen is introduced to react with the carbonaceous deposits, converting them into methane and other light hydrocarbons that can be removed easily. Chemical Solvents: Specialized solvents can be used to dissolve and remove coke deposits, although this method is less common due to the potential for solvent contamination and other complications.
