Crystallization blockage in the alkali absorption tower for chlorination reaction exhaust gases
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When absorbing the exhaust gases from chlorination reactions (chlorine and hydrogen chloride), we use 15% caustic soda for absorption; the packing towers are often clogged by crystals. Analysis shows that these crystals contain sodium chlorate, while sodium chloride is present in small amounts. Can any experts provide a solution? Thank you so much
Two-stage or three-stage water absorption followed by one-stage or two-stage alkali absorption
What is the operating temperature? Furthermore, it cannot be done merely by using caustic soda for absorption; more water should also be added at the top for washing
What is the operating temperature? Furthermore, it cannot be done merely by using caustic soda for absorption; more water should also be added at the top for washing
Add an additional stage of spray absorption, control the absorption temperature properly, and install a set of hot water sprayers on the packing layer.
Is it divided into two levels? Hot water circulates above, and alkaline solution absorbs below? It seems rather troublesome, and it can only solve the problem of clogged nozzles; it may not be able to address clogged fillers.
Dilute hydrochloric acid can be obtained through primary and secondary falling film water absorption; using liquid alkali in the third stage will resolve the issue
First, absorb the by-product hydrochloric acid using a falling film absorber; then perform alkaline washing while controlling the concentration of the alkaline solution and optimizing the process to prevent crystallization. For further communication, please contact: :call: 13962096400