Fixed bed reactor, temperature

ILLUSTRATION 12.6 HEAT TRANSFER IN A FIXED BED REACTOR—TEMPERATURE GRADIENTS BETWEEN THE BULK FLUID AND THE EXTERNAL CATALYST SURFACE... 

Employing process conditions similar to those used for steam reforming of natural gas (e.g. fixed-bed reactors, temperatures in the 800-900 °C range) has been demonstrated to be inadequate for processing thermally unstable biomass liquids [29]. The most important problem is represented by coke formation, especially in the upper layer of the catalyst bed and in the reactor freeboard, that limits the operation time (e.g. 3—4 h on commercial Ni-based catalysts) and requires a long regeneration process for the catalyst (e.g. 6-8 h on commercial Ni-based catalysts). 

Fig. 1 Catalytic fixation of CO into carbon via methane with conventional fixed bed reactor, temperature at CO2 methanation was fixed at...

ILLUSTRATION 12.6 Heat Transfer in a Fixed Bed Reactor Temperature Gradients Between the Bulk Fluid and the External Catalyst Surface... 

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See also in sourсe #XX -- [ ]

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