Sorption-Enhanced Processes in Fluidized Bed Systems

Dear Colleagues,

Sorption-enhanced (SE) processes consist in equilibrium-limited reactions whose conversion is increased beyond equilibrium limits by subtracting from the reaction environment one of the gaseous byproducts. Such subtraction can be performed by means of a suitable solid sorbent or using a selective membrane. This local removal shifts the chemical equilibrium of the reaction (according to Le Chatelier’s principle), allowing up to 100% conversion to the desired product to be reached, despite the thermodynamic constraints.

In recent years, this class of processes has attracted increasing attention due to the appealing advantages attainable for equilibrium-limited reactions. Many novel SE processes have been proposed, while most of the attention has been devoted to:

• SE steam reforming of hydrocarbons;
• SE gasification of biomass;
• SE water–gas shift reaction;
• SE CO/CO₂ hydrogenation.

SE processes can be performed in different types of reactors, such as fixed beds and membrane reactors, but fluidized bed reactors appear to provide some inherent advantages compared to the others. In fact, efficient heat management and easy solid particle circulation allow for safe steady operation and continuous sorbent regeneration in dual fluidized bed systems.

This Special Issue is focused on SE processes in fluidized bed systems. Papers dealing with the following topics are welcome:

• Experimental and modeling studies on new SE concepts;
• Studies on conventional SE concepts focused on novel aspects;
• Novel conventional or bi-functional sorbents for fluidized bed SE processes;
• Novel fluidized bed reactors for SE processes;
• Process, techno-economic and environmental performance analysis of SE processes.

Prof. Dr. Fabrizio Scala
Dr. Antonio Coppola
Guest EditorS

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• sorption-enhanced processes
• fluidized bed reactors
• bi-functional sorbents
• steam reforming
• biomass gasification
• water–gas shift
• hydrogenation