| Summary: | 碩士 === 國立中山大學 === 環境工程研究所 === 84 === This research is to study the removal of SO2 and NO from flue
gas emitted from the incineration of municipal solid waste by a
self-developed fabric filter located at the downstream of a
spray dryer. The use of additives such as NaCl、NaOH、CaCl2‧2
H2O and sea water to calcium hydroxide (Ca(OH)2) was applied to
increase the removal efficiency of acidic gases and make it
more competitive with wet scrubbing. The experiments were
conducted in two parts in this study. The first is the removal
of single acidic gas while the second is the simultaneous
removal of SO2 and NO. The operating parameters examined in
the experiment included approach to adiabatic saturation
temperature (AT)、stoichiometric ratio (SR) and mass percentage
of additives to sorbent. Experiments results indicated that in
the single gas removal efficiency tests, CaCl2‧2H2O was the
most effective in increasing of SO2 removal efficiency in the
spray dryer-fabric filter system. NaCl demonstrated the least
effective among these additives. It means that the relative
humidity influences the removal of NO, the addition of NaOH was
more effective than other additives in this study. Although
alkalinity plays more important role than moisture to the
removal of NO gas, the presence of water is absolutely required.
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