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Scrubbing of SO 2 with trona solution in a spray drier
Author(s) -
Doĝu Gülsen,
Uçar Çiĝdem,
Doĝu Timur,
Gürüz Güniz,
Durmaz Ali,
Ercan Yücel
Publication year - 1992
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450700428
Subject(s) - data scrubbing , environmental science , process engineering , waste management , engineering
Effect of operating variables on the scrubbing efficiency of SO 2 in a spray drier was investigated using trona (Na 2 CO 3 · NaHCO 3 · 2H 2 O) solutions of different compositions. Results indicated that for a Na/S mole ratio of two (stoichiometric ratio) about 80% of the SO 2 was removed. For higher Na/S ratios, SO 2 removal efficiency increased by up to 100%. Increased SO 2 concentration in the feed gas and decreased outlet temperature caused an increase in the overall conversion. At low temperatures and low SO 2 concentration, the reaction takes place mainly between SO 2 and Na 2 CO 3 As the temperature is increased, decomposition of NaHCO 3 to Na 2 CO 3 and sorption reactions take place simultaneously.