Packing installation stacked

For industrial reactors of large volume, the structured packing of the LFR and PPR is for practical reasons best made up from standard modules ( unit cells ) that are arranged in the reactor space by stacking. These modules are shop fabricated and filled before being installed in the reactor. Thus time can be saved in the startup of a plant and during catalyst replacement. 

Downstream of the converter, a DC bus connects this device in electric parallel with the battery pack to supply the electric drive. Voltage and current sensors are installed on batteries and upstream-downstream the DC-DC converter, as shown in Fig. 6.2, to monitor the electric energy flows between the different components of the propulsion system. The DC-DC converter allows the stack output power to be varied according to the selected control strategy. Furthermore, some security switches are adopted, in order to instantaneously disconnect the electric load from battery pack and/or stack. An I/O laboratory board is used for data acquisition and setting of the electrical parameter affecting the DC-DC converter behavior. 

Film fill consists of corrugated or rippled sheets that subdivide the water and provide interfacial area. These sheets are assembled into packs that are installed vertically and stacked at offset angles. This is the more efficient of the two types of fill, but it is more difficult to install properly. Solids are more likely to deposit in the fill, and maldistribution of water is more likely. 

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