PL418368A1 - Method for reducing concentrations of gaseous acid anhydrides, preferably concentration of CO<sub>2</sub> in waste gases - Google Patents
Method for reducing concentrations of gaseous acid anhydrides, preferably concentration of CO<sub>2</sub> in waste gasesInfo
- Publication number
- PL418368A1 PL418368A1 PL418368A PL41836816A PL418368A1 PL 418368 A1 PL418368 A1 PL 418368A1 PL 418368 A PL418368 A PL 418368A PL 41836816 A PL41836816 A PL 41836816A PL 418368 A1 PL418368 A1 PL 418368A1
- Authority
- PL
- Poland
- Prior art keywords
- sub
- concentration
- absorbent
- alkali metal
- acid anhydrides
- Prior art date
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- Treating Waste Gases (AREA)
Abstract
Zgłoszenie dotyczy sposobu redukcji stężeń gazowych bezwodników kwasowych, zwłaszcza stężenia CO2, w gazach odlotowych, w którym gazy odlotowe zawierające wyżej wskazane bezwodniki kwasowe kontaktuje się z absorbentem stanowiącym roztwór wodorotlenku i/lub węglanów metalu alkalicznego, w wyniku czego gazowe bezwodniki kwasowe wiązane są do postaci soli, w tym NaHCO3 i ewentualnie powstaje dwufazowa mieszanina poreakcyjna, z której po usunięciu wytrąconego NaHCO3 powstają ługi poreakcyjne. Sposób charakteryzuje się tym, że roztwór absorbentu zawiera zasadniczo mieszaninę wodorotlenków metali alkalicznych i dodatkowo sole nieabsorbujące: halogenki, w tym zwłaszcza chlorki, i/lub siarczany i/lub azotany metali alkalicznych i/lub amonu, oraz stężenie łączne soli w absorbencie wynosi co najmniej 5% wag. oraz stężenie wodorotlenków metali alkalicznych w absorbencie wynosi co najmniej 0,1 M; oraz sód występuje w absorbencie w ilości molowo przeważającej, a regeneracji zasadowości w ługach poreakcyjnych dokonuje się korzystnie przy użyciu ekstrakcji ciecz/ciecz.The application relates to a method for reducing the concentration of acidic anhydrides, in particular the concentration of CO2, in waste gases, in which the waste gases containing the above-mentioned acid anhydrides are contacted with an absorbent solution of the hydroxide and / or alkali metal carbonates, as a result of which the acid anhydrides are bound to form salts, including NaHCO3, and eventually a biphasic reaction mixture is formed, from which, after removal of the precipitated NaHCO3, reaction liquors are formed. The method is characterized in that the absorbent solution contains essentially a mixture of alkali metal hydroxides and additionally non-absorbing salts: halides, in particular chlorides and / or sulfates and / or nitrates of alkali metal and / or ammonium, and the total concentration of salts in the absorbent 5 wt. and the concentration of alkali metal hydroxides in the absorbent is at least 0.1 M; and sodium is present in the absorbent in a predominantly molar amount, and the regeneration of alkalinity in the reaction liquors is preferably carried out using liquid / liquid extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL418368A PL234232B1 (en) | 2016-08-17 | 2016-08-17 | Method for reducing concentrations of gaseous acid anhydrides, preferably concentration of CO<sub>2</sub> in waste gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL418368A PL234232B1 (en) | 2016-08-17 | 2016-08-17 | Method for reducing concentrations of gaseous acid anhydrides, preferably concentration of CO<sub>2</sub> in waste gases |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL418368A1 true PL418368A1 (en) | 2018-02-26 |
| PL234232B1 PL234232B1 (en) | 2020-01-31 |
Family
ID=61227629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL418368A PL234232B1 (en) | 2016-08-17 | 2016-08-17 | Method for reducing concentrations of gaseous acid anhydrides, preferably concentration of CO<sub>2</sub> in waste gases |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL234232B1 (en) |
-
2016
- 2016-08-17 PL PL418368A patent/PL234232B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL234232B1 (en) | 2020-01-31 |
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