B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/50 (2006.01)
Patent
CA 2343640
A wet flue gas desulfurization process for removing sulfur dioxide from flue gases. The process utilizes an ammonium sulfate scrubbing solution (22) to produce ammonium sulfate as a valuable byproduct. The scrubbing solution (22) contacts the flue gases and absorbs sulfur dioxide within an absorber (12) of a flue gas scrubbing apparatus (10), and is then accumulated in a tank (18) where the absorbed sulfur dioxide is reacted with oxygen and ammonia to produce ammonium sulfate. The scrubbing solution (22) has a concentration of greater than 46 % ammonium sulfate so as to have suspended solids of ammonium sulfate precipitate, preferably 1 % to 20 % suspended solids.
L'invention concerne un procédé de désulfuration de gaz de combustion humides, permettant d'éliminer le dioxyde de soufre des gaz de combustion. Dans ce procédé, on utilise une solution de lavage de sulfate d'ammonium (22) pour obtenir un sulfate d'ammonium comme sous-produit de valeur. La solution de lavage (22) est mise en contact avec les gaz de combustion et absorbe le dioxyde de sulfure à l'intérieur d'un absorbeur (12) d'un appareil de nettoyage des gaz de combustion (10). Ladite solution est ensuite accumulée dans un réservoir (18), où l'on fait réagir le dioxyde de soufre absorbé au contact de l'oxygène et de l'ammoniac afin de produire du sulfate d'ammonium. La solution de lavage (22) a une concentration d'ammonium de sulfate supérieure à 46 %, de manière à contenir, de préférence, 1 % à 20 % de matières solides en suspension d'un précipité d'ammonium de sulfate.
Brown Gregory N.
Mengel Michael L.
Craig Wilson And Company
Marsulex Environmental Technologies Corp.
Marsulex Environmental Technologies Llc
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