Reactor design and engineering

A prototypic design for a tubular membrane reactor can be found in linde AG s patent appUcation shown in Fig. 8.9 [24]. This design uses a bundle of ceramic membrane tubes that are inside a pressure vessel. The tubes are closed at one end with the air fed to the tubes in the annulus between the ceramic tube, labeled 32, 

As noted in another patent, also from linde AG [25], one of the disadvantages to their previous design [24] is the unfavorable aspect ratio of the pressure vessel for this reactor design. To scale up ceramic membrane technology and to increase 

One possible disadvantage of the reactor design shown in Fig. 8.10 is that it requires a considerable number of vessel penetrations. The number of penetrations will be proportional to the membrane area. Since each penetration will need to be cut into the pressure vessel and then a chamber welded onto the vessel at each cut, the use of multiple penetrations could add significantly to the cost of the vessel. 

Praxair has also filed patent applications on a syngas reactor incorporating tubular membranes, as shown in Fig. 8.11 [26]. Similar to the Unde AG design of Fig. 8.9, this design uses tubular membranes oriented with the axes of the tubes parallel to the axis of the cylindrical pressure vessel. High pressure syngas flows on the exterior of the ceramic membrane tubes, and low pressure air is fed into 

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A challenge related to the problems of reactor design and engineering is the modehng and study of the fundamental chemistry occtrrring in manufactrrring processes for semiconductors, optical fibers, magnetic media, and interconnection. 

I 2 Basis of Chemical Reactor Design and Engineering constants are equal ... 

This chapter is devoted to the discussion of thermal effects during chemical reactions with the main emphasis on how they can be controlled by using microdevices. A short introduction outlines the basic principles used in chemical reaction engineering without going into the details of thermostability of conventional flow reactors. The reader can find these topics in general text books on conventional chemical reactor design and engineering. 

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