Heat-exchange reactor

Intensification of Heat Transfer in Chemical Reactors Heat Exchanger Reactors... 

Figure 12.1 Successive plates contained in a block of the heat-exchanger/reactor OPR.

Examplesof Heat-Exchanger Reactor Technologies 269 Table 12.3 SiC reactor characteristics according to flow rate. 

I 72 Intensification of Heat Transfer in Chemical Reactors Heat Exchanger Reactors Table 12.5 Effusivity values according to the reactor material. 

S. H., and Stitt, E.H. (2007) intensification of the solvent-free catalytic hydroformylation of cydododecatriene comparison of a stirred batch reactor and a heat-exchange reactor. Catal. Today, 128, 18-25. 

CHART Industries (2009) Compact Heat Exchange Reactors. Available on mviv.cha rt-i nd.com /app ec reactortech.cfin (accessed March 2009). 

Anxionnaz, Z., Cabassud, M., Gourdon, C., and Tochon, P. (2009) Hydrodynamic study and optimisation of the geometry of a heat exchanger/reactor. 2nd European Process Intensification Conference 2009, Venice. 

N., Cabassud, M., Douglas, C., and Demissy, M. (2008) Dynamic behaviour of a continuous heat exchanger/reactor after flow failure. Int.J. Chem. React. Eng., 6 (A23), Available at http //nnnv.bepress.com/ijcre/vol6/A23. 

M. (2008) Evaluation of an intensified continuous heat-exchanger reactor for inherently safer characteristics. J. Loss Prev. Process Ind. 21 (5), 528-536. 

Static mixing catalysts Operation Monolithic reactors Microreactors Heat exchange reactors Supersonic gas/liquid reactor Jet-impingement reactor Rotating packed-bed reactor... 

Calculations predict that improved heat transfer for reacting systems in micro-channel heat-exchanger reactors could lead to considerable size reduction of the equipment, by enhancing the degree of product formation per micro channel (see Figrue 1.24) [140, 141]. This was exemplarily shown for a fast, high-temperature... 

Substantial heat-transfer intensification was also described for a special micro heat exchanger reactor [104]. By appropriate distribution of the gas-coolant stream, the axial temperature gradient can be decreased considerably, even under conditions corresponding to very large adiabatic temperature rises, e.g. of about 1400 °C. 

Off-the-shelf catalogue sales of micro reactors have just started [15]. With an increasing number of commercial products, quality control will become more important. Brandner et al. describe quality control for micro heat exchangers/reactors at the Forschungszentrum Karlsruhe [23]. All manufacturing steps are accompanied by quality control and documentation. Leak rates (down to 10 mbar 1 s for He) and overpressure resistance (up to 1000 bar at ambient temperature) are measured. Under standardized conditions, the mean hydraulic diameter is determined. Dynamic tests supplement this quality control. 

Figure 2.52 2-D model of a counter-current heat-exchanger reactor with a nanoporous catalyst layer deposited on the channel wall.

The optimization of heat transfer in a heat-exchanger reactor was also the objective of the work of TeGrotenhuis et al. [165]. Specifically, the exothermic water-gas shift (WGS) reaction ... 

TeGrotenhuis et al. studied a counter-current heat-exchanger reactor for the WGS reaction with integrated cooling gas channels for removal of the reaction heat. The computational domain of their 2-D model on the basis of the finite-element method... 

GS 11] ]R 5] At high mass flows and with a large heat release, an undesired, substantial temperature increase even for highly efficient micro heat exchanger-reactors is observed (Figure 3.53) [115]. 

Figure 17.10. Several modes of mixing in commercial tank reactors, (a) Steam-jacketed autoclave, 120 gal, 200psig, 300°F (courtesy Blaw-Knox Co.), (b) Horizontal autoclave, 650gal, lOOpsig (courtesy Blaw-Knox Co.), (c) Ball-mill sulfonator [Groggins. Courtesy McGraw-Hill, New York]. (d) Horizontal heat-exchange reactor (courtesy Stratford Engineering Corp. patents issued and pending).

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