The slurry of Prob. 29.3 is to be filtered in a press having a total area of

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The slurry of Prob. 29.3 is to be filtered in a press having a total area of 8 m2 and operated at a constant pressure drop of 2 atm. The frames are 36 mm thick. Assume that the filter medium resistance in the large press is the same as that in the laboratory filter. Calculate the filtration time required and the volume of filtrate obtained in one cycle.

Prob. 29.3

The data in Table 29.6 were taken in a constant-pressure filtration of a slurry of CaCO3 in H2O. The filter was a 6-in. filter press with an area of 1.0 ft2. The mass fraction of solids in the feed to the press was 0.139. Calculate the values of α, Rm, and cake thickness for each of the experiments. The temperature is 70°F.

Table 29.6

TABLE 29.6 Data from constant-pressure filtration 5-lb,/in. pressure drop (1) Filtrate, Time, lb S 0 2 4 6 8

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Unit Operations Of Chemical Engineering

ISBN: 9780072848236

7th Edition

Authors: Warren McCabe, Julian Smith, Peter Harriott

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