Design Problems of Chemical Micro Structured Reactor Plants

Design Problems of Chemical Micro Structured Reactor Plants 

Owing to the small size of micro devices, new design methods are required. Similar to conventional unit operations, micro-scale pendants exist, named micro unit 

In a conventional design, each unit operation is modeled using terms and values which do not depend on the location inside the device. On the one hand, convection and diffusion in a micro structured device strongly influence the functioning of the device, and on the other hand the convection and diffusion conditions are affected by the shape of the device. To obtain an optimized fluidic micro device, some constraints on the shape of the device are necessary. These are constraints, e.g., on the average residence time, the residence time distribution and the temperature distribution [13]. 

Internal structures of micro devices (sometimes the micro device itself) are very small compared with conventional chemical equipment. However, micro fluidic devices are large enough that the physical laws established for the macroscopic world can be used to describe the behavior in the device. However, some additional terms must be taken into account, which are neglected in designing conventional reactors. An efficiency analysis of micro heat exchangers [46] is used to explain 

Channel width (pm) too streams Inlet average velocity (m s ) 0.2 

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