Reactor catalytic plate

Charlesworth, R. J. The steam reforming and combustion of methane on micro-thin catalysts for use in a catalytic plate reactor (Ph. D. Thesis, University of Newcastle upon Tyne, 1996). 

One of the benefits of applying micro structured heat exchanger/reactors is the potential of combining an endothermic reaction such as steam reforming with an exothermic reaction such as catalytic combustion. This idea was proposed for the macro scale as a so-called catalytic plate reactor (CPR) by Reay [100],... 

Zanfir M., Gavriilidis, A., Catalytic combustion assisted methane steam reforming in a catalytic plate reactor, Chem. Eng. Sci. 2003, 58, 3947-3960. 

CHC CHCC CNC coc CP AC CPR CPU CVD CW Catalytic hydrogen combustion Catalytic hydrocarbon combustion Computerized Numeric Control Cyclo olefin copolymer Center for Process Analytical Chemistry Catalytic plate reactor Central processing unit Chemical vapor deposition Continous wave... 

M. Zanfir, A. Gavriilidis, Modeling of a catalytic plate reactor for dehydrogenation-combustion coupling. Chem. Eng. Sci.,... 

C. Ramshaw, Combustion and steam reforming of methane on thin layer catalysts for use in catalytic plate reactors. Fourth UK/National Conference on Heat Transfer, Institution of Mechanical Engineers, 26-27 September 1995, pp. 85-89. 

Zanfir, M. and Gavriilidis, A. Influence of flow arrangement in catalytic plate reactors for methane steam reforming. Chemical Engineering Research Design, 2004, 82 (2), 252. 

A preferred embodiment of this concept is the catalytic plate reactor, which consists of catalytically coated metal plates so that exothermic and endothermic reactions take place in alternate channels. In addition to minimizing the heat transfer resistances, this reactor facilitates mass transfer to the catalytic surface by reducing the diffusion length. Catalytic plate reactors can find applications in steam reforming, dehydrogenation, and hydrocarbon cracking which are strongly endothermic processes. In recent years those reactors have received considerable attention as steam reformers for fuel cell applications. " ... 

The concept of process intensification aims to achieve enhancement in transport rates by orders of magnitude to develop multifunctional modules with a view to provide manufacturing flexibility in process plants. In recent years, advancement in the field of reactor technology has seen the development of catalytic plate reactors, oscillatory baffled reactors, microreactors, membrane reactors, and trickle-bed reactors. One such reactor that is truly multifunctional in characteristics is the spinning disk reactor (SDR). This reactor has the potential to provide reactions, separations, and good heat transfer characteristics. 

FIGURE 6.6. Catalytic plate reactor—combined exo and endo reactions. 

In the area of reactors intensification has been brought about in a number of ways. Two stand out in the history of PI reactor development - the catalytic plate reactor and the spinifing disc reactor, both of which came out of the ICI stable. Both concepts are discussed at length in Chapter 5. 

Figure 5.26 A pair of adjacent channels in the catalytic plate reactor.

Table 5.3 Size reduction using catalytic plate reactors for the Fischer-Tropsch reaction.

In a catalytic plate reactor (CPR), metal plates coated with a suitable catalyst are arranged such that exothermic and endothermic reactions take place in alternate channels (Figure 5.26). These channels typically have a height of the order of millimetres and a catalyst thickness of the order of microns. 

The term catalytic plate reactor , like heat exchanger reactor , may be generally used for PCR-type units and a number of one-off plate reactor types. 

A more rational approach would be to utilise the temperature potential more effectively by incorporating the furnace into a gas turbine cycle, perhaps using a catalytic plate reactor or the equivalent This could be achieved with pressurised combustion, in which the furnace acts as the combustor of a conventional gas turbine cycle. The design of the catalytic plate reactor (see Chapter 5) lends itself well to operation at elevated pressure in view of its millimetre-sized gas channels. Thus power may be extracted from the high-grade heat before it is used at a lower temperature to drive the process. 

An alternative to the foregoing design is the catalytic plate reactor in which thin layers of combustion and process catalysts are deposited on opposite sides of a heat exchanger surface (see Chapter 1, Figure 1.10(b)). The combustion heat is generated... 

One of the concepts briefly examined during studies carried out in the last fifteen years (Reay and Ramshaw, 1992 1998) concerned linking the reforming of methane in a catalytic plate reactor to a gas turbine combustion chamber. As the reaction is endothermic, a second set of channels is used to carry out the combustion of stoichiometric methane-air on a film of combustion catalyst deposited on the reactor wall. The importance to gas turbines is twofold - high pressure combustion gases can be expanded in the turbine to give more power than that needed to compress the methane-air mixture and the plate reactor can take place at a lower temperature, allowing a substantial reduction in NOx. 

Bulk chemicals Steam reforming of natural gas Catalytic plate reactor... 

Activities Design of catalytic microreactors zeolite nucroreactors modelling of catalytic plate reactors. 

The idea of combining endothermic with exothermic reactions has already been proposed by Reay, and is the so-called Catalytic Plate Reactor (CPR) [462]. 

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