Method for removing hydrogen sulfide in sucralose tail gas

The invention discloses a method for removing hydrogen sulfide in sucralose tail gas, and belongs to the technical field of tail gas treatment. According to the method, a composite adsorbent is adopted to adsorb hydrogen sulfide gas in sucralose tail gas, so that the sucralose tail gas reaches the e...

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Hauptverfasser: XUE YI, HU ZHONGMING, ZHANG WENSHU, CHEN YONGLE, WANG YIN, LU JIANDONG, CHEN HONGBING, DONG DECHANG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a method for removing hydrogen sulfide in sucralose tail gas, and belongs to the technical field of tail gas treatment. According to the method, a composite adsorbent is adopted to adsorb hydrogen sulfide gas in sucralose tail gas, so that the sucralose tail gas reaches the emission standard, N, N-dimethylethanolamine adsorbed by the composite adsorbent has specificity on hydrogen sulfide, sodium sulfide is replaced from N, N-dimethylethanolamine adsorbed with hydrogen sulfide by strong base sodium hydroxide, and the N, N-dimethylethanolamine is supplied, so that the sucralose tail gas reaches the emission standard. The sodium sulfide can be oxidized by oxygen in the air to generate sodium sulfate. The problem that a traditional adsorbent only adsorbs without conversion or only converts without adsorption is solved, it is ensured that the S element is converted into a stable state after adsorption, secondary pollution is avoided, the content of hydrogen sulfide in tail gas treated by t