Design of a device for large gas flow rates

The results described in Section 7.5 illustrate that the application of gas-continuous impinging stream gas-liquid reactor for the wet desulfurization of flue gas performs to good effect. Gas-liquid reaction is a large category of important reactions involved in many processing industries, among which many systems involve fast or instantaneous 

The major advantages of GIS over other methods for the wet desulfurization of flue gas are its high sulfur-removal efficiency, very large volumetric mass transfer coefficient which necessitates only a small device, and relatively small resistance to the streams. Therefore the application of GIS for wet FGD can be expected to yield great economic and social benefits. However, for such a purpose the related engineering problems need to be solved. 

The distances from the outlets of the conduits to the center where the two axes meet are equal (See Fig. 7.22), and the distance between the exits of the two conduits in each sub-group is the impinging distance . Depending on the requirement of the amount of liquid or suspension to be used, one nozzle or a set of nozzles can be installed inside each conduit with the exit(s) towards the same direction as the outlet of the conduit, i.e., towards the center of the absorption chamber. 

All groups of the impinging stream component I, II, etc. are operated concurrently. 

For Nozzle (3), a pressure atomization nozzle, also called the centrifugal pressure nozzle, can be employed. It is desirable to use the eddy pressure nozzle (Chinese patent, ZL00230305.1). The latter has a higher flow-rotating efficiency, and thus requires less energy to atomize the liquid or solid-in-liquid suspension. 

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