Third catalyst bed input gas

Figure 21.1 s catalyst bed input and output gas enthalpies can be calculated directly on our heatup path-equilibrium curve worksheets (Table 21.1). Table 21.1 s third catalyst bed input gas enthalpy is, for example,... 

Third catalyst bed input gas temperature = 710 Intercept temperature, cell A14 = 721.1 ... 

K third catalyst bed exit gas to cool it to the specified 470 K H2SO4 making input gas temperature. The heat is, of course, transferred to water in Fig. 21.1 s economizer. 

What fraction of Problem 22.1 s third catalyst bed exit gas will have to be bypassed around Problem 22.1(b) s economizer to give 470 K H2SO4 making input gas when the economizer input gas is... 

The absorption tower input gas (i.e., cooled third catalyst bed exit gas) contains... 

Figure 8.6 Industrial first, second, and third catalyst bed gas nominal residence times. They increase with increasing bed number. This is due to the increase in bed thickness with increasing bed number (Fig. 8.4). The points have been calculated from Tables 7.2 to 7.6 industrial catalyst bed thicknesses, converter diameters, and converter input gas flow rates.

Table 21.1 Bottom half of Table 0.1 s third catalyst bed heatup path-equilibrium curve intercept worksheet. Input and output gas enthalpies are shown in rows 43 and 44. Note that they are the same. This is because our heatup path calculations assume no convective, conductive, or radiative heat loss during catalytic SO2+O.5O2—>S03 oxidation (Section 11.9). First and second catalyst bed enthalpies are calculated similarly using Tables J.2 and M.2. 

First catalyst bed feed gas and the following catalyst bed gas input temperatures First catalyst bed 675 K Second catalyst bed 685 K Third catalyst bed 695 K. 

Use your Problem 16.1 third catalyst bed output quantities and Eq. (21.3) to calculate H2SO4 making s input gas enthalpy. 

The third catalyst bed worksheet area is set up like the second (with a different input gas temperature, Table 18.1). The row 8 quantities are automatically copied from the second bed area by the instructions ... 

Third catalyst bed heatup paOi matiix (in means in input gas," out means in intercept gas ) ... 

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