Cyclone spray reactor

Fig. 2 Updated flash pyrolysis pilot plant for biomass (PDU-Scalc) (1 hopper, 2 vibration conveyor, 3 screw feeder. 4 fluidised bed reactor, 5 cyclone system. 6 monopump. 7 quench liquid reservoir, 8 heat exchanger, 9 spray tower, 10 electrostatic precipitators, 11 heat exchanger, 12 flare, 13 compressor, 14 gas preheater 1. 15 gas preheater 2, 16 overflow pipe, 17 char collection vessel).

Air pollution control APC units (cyclone, venturi scrubber, tangential spray scrubber, spray tower, ID fans, chimney) This is required to absorb the gases evolved from reactor and den for air pollution control HF will be released into atmosphere and cause air pollution Monitor operation of APC units and exit gases all the time... 

An interesting situation arises in processes where the reaction product P evaporates and is taken out of the reactor with the gas phase (the supply phase). Let us assume that there are no chemical reactions in the gas phase, e.g., l ause the liquid phase reaction is catalysed. We consider the case of rapid reactions, so that all the desired product P is formed in the diffusion layer in the liquid phase, close to the interface. When P can undergo undesired reactions in the liquid phase it is essential to remove P as effectively as we can, e.g., by creating a large surface area and very high gas-phase mass transfer coefficients. At the same time it is essential that the volume of the liquid phase is minimized, since decomposition of P will occur just there. The obvious choice would then be a configuration where the liquid is the dispersed phase, such as in a spray tower or a spray cyclone, provided the heat removal rate is sufficient. Another suitable arrangement could be a gas/liquid packed bed or a wetted wall column. The latter reactor type is very suitable for heat removal (section 4.6.3.1)... 

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