Tower packing configurations

Cooling tower packing material is commonly referred to as fill. The two most common configurations used are illustrated in Figure 5.3. The purpose... 

Countercurrent packed towers (in their various forms) appear to be the most appropriate equipment configuration for treating contaminated groundwaters for the following reasons ... 

Static Pressure Drop—The reduction of air movement through the tower resulting from resistance of internal components such as air-intake louvers, fill packing, water distribution system, internal supporting beams, drift eliminators and fan stack configuration. 

The scale-up and design configurations of fluid-bed chemical reactors have evolved rapidly and empirically. An example is fluid catalytic cracking (FCC) [13]. The general fluid-bed concepts developed early. However, the correlations describing the various rate processes and other operational phenomena developed slowly because they could not easily be related back to already established data bases developed for other systems in the case of trickle-bed reactors, data developed for packed-bed absorption towers were utilized. 

Distillation columns The simulator column models include not just the column itself, but also the reboiler, condenser, overhead receiver drum, and reflux pump (but not bottoms pump). ICARUS has 10 possible configurations to which a column can be mapped. Alternatively, the column can be mapped to a packed or trayed tower, and the ancillary items can be created as separate Icarus project components. 

The same design conditions used for the crosscurrent tower will also apply to the connter-current tower in this problem. Becanse we have no valid data for the height of a transfer nnit for the packing nsed in the conntercurrent configuration, we will use the same value of 9.7 ft for the purpose of illustration. 

This chapter introduces the use of Aspen HYSYS to model a continuous gas absorption process in a packed column. The only imit operation contained in the Absorber is the Tray Section, and the only streams are the overhead vapor and bottom liquid products. There are no available specifications for the Absorber, which is the base case for all tower configurations. The conditions and composition of the column feed stream, as well as the operating pressure, define the resulting converged solution. The converged solution includes the conditions and composition of the vapor and liquid product streams. 

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