FIELD: process engineering.
SUBSTANCE: proposed method comprises cleaning waste gases of sulfur dioxide by its absorption by N-alkyl pyrrolidone with water addition and subsequent distillation of sulfur dioxide in absorber regenerator. Absorption by N-methyl or N-ethyl pyrrolidone with water content of 0 to 15 wt % is performed at -20 to +18°C with addition of 2- pyrrolidone in amount of 0 to 30 wt % with subsequent distillation at 1.2-1.5 atm and 110-140°C. Absorbent regenerator top section forms zone of rectification of the mix of absorbent and water while absorber top section forms the zone of catching absorbent vapors by a part of distilled water.
EFFECT: reduced specific power consumption.
3 cl, 1 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING α-ACETYLENE γ-DIOLS | 2001 |
|
RU2206559C1 |
| METHOD OF PURIFYING DISCHARGED GASES FROM HYDROGEN SULPHIDE | 2012 |
|
RU2526455C2 |
| NEW ABSORBING AGENT AND METHOD FOR ISOLATION OF SULFUR DIOXIDE FROM GAS FLOW, USING THIS AGENT | 2022 |
|
RU2787119C1 |
| METHOD AND UNIT FOR STRIPPING OF NATURAL GAS FROM CARBON DIOXIDE AND HYDROGEN SULPHIDE | 2014 |
|
RU2547021C1 |
| PROCESS OF REMOVING SULFUR FROM MAGNETITE CONCENTRATES VIA FLOTATION TREATMENT | 2006 |
|
RU2313400C1 |
| FOAMING AGENT FOR FLOTATION OF MINERALS AND METHOD OF ITS OBTAINING | 2013 |
|
RU2552430C1 |
| METHOD OF PRODUCING STOICHIOMETRIC HYDRONITRIC MIXTURE, METHOD OF PRODUCING AMMONIA USING SAID MIXTURE AND APPARATUS FOR REALISING SAID METHODS | 2010 |
|
RU2438975C1 |
| METHOD AND INSTALLATION FOR PURIFYING NATURAL GAS FROM CARBON DIOXIDE AND HYDROGEN SULPHIDE | 2016 |
|
RU2624160C1 |
| METHOD FOR CLEANING GASES FROM CARBON DIOXIDE | 0 |
|
SU1797967A1 |
| METHOD FOR GAS PURIFICATION FROM SULPHUR DIOXIDE | 1994 |
|
RU2081683C1 |
