Organic waste gas recovery treatment process in industrial cyanate ester resin production
The invention discloses an organic waste gas recovery treatment process in industrial cyanate ester resin production, which comprises the following steps: dissolving triethylamine and isopropanol in organic waste gas by using a hydrochloric acid aqueous solution, and enriching toluene by using a tol...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses an organic waste gas recovery treatment process in industrial cyanate ester resin production, which comprises the following steps: dissolving triethylamine and isopropanol in organic waste gas by using a hydrochloric acid aqueous solution, and enriching toluene by using a toluene absorption liquid as a toluene absorbent in the toluene recovery process, thereby enhancing theenergy utilization ratio; in the recovery process of triethylamine and isopropanol, firstly, filtering a hydrochloric acid solution and then pumping into a first salting-out separation kettle, then adjusting the pH to 10-13, parsing triethylamine from triethylamine hydrochloride, obtaining triethylamine, and then achieving the effect of collecting isopropanol by utilizing the property that isopropanol is insoluble in the salt solution; and subjecting the mixed solution of triethylamine and isopropanol to distillation separation by adding an extraction agent, so that recovery of toluene, triethylamine and isopropanol |
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