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Wet and Dry Scrubbing 287
Fig. 18. Venturi tower configurationswer plant’s emission stream: (a) Fixed Throat; (b)
Variable-Throat top–entry plumb bob; (c) Variable-Throat bottom-entry plumb bob; (d)
Variable-Throat top-entry liquid distribution disk; (e) Variable -Throat side veriable-plates or
blades; (f) Variable-Throat side-movable blocks; (g) Variable -Throat vertically adjusted fod
decks; (h) Variable-Throat vertically adjusted drum. (From US EPA.)
Example 28
The lime/limestone FGD process has been previously discussed in this chapter. This
example is a discussion of various scrubber (absorption towers) designs that may be con-
sidered by an environmental engineer to use to treat the emissions from the FGD process.
The possible choices are as follows (32,66,67):
