Power parameters metal removal

Apart from the number of units on a machine, metal removal depends upon the application pressure of the grinding wheels on the rail, a parameter that is limited by the installed power of the units. Typically, unit nominal powers are between 15kW and 23kW. 

Because Intalox structured packing 2T has an absorption efficiency greater than 1-in. metal Pall rings, this packing will be evaluated. At a fixed liquid rate, the mass transfer coefficient will increase at the 0.75 power of the gas rate for this gas-film-controlled absorption (see Chapter 3). At 10,800 CFM air flow, the mass transfer coefficient for Intalox structured packing 2T will be more than sufficient to handle the absorption of an additional 50% of acetic acid vapor with the same mass transfer driving force and packed depth. The inlet air has a density of 0.0728 Ib/ft, while the inlet liquid has a density of 62.2 Ib/ft and a viscosity of 0.81 cps. Because only 232 Ib/h of acetic acid vapor for three trains must be removed by the scrubber, the physical properties of the gas and liquid streams do not change from top to bottom of this tower. The flow parameter at the bottom of the scrubber will be ... 

---