FIELD: gas treatment.
SUBSTANCE: object of invention is fine cleaning of gases in order to remove carbon dioxide at elevated pressures, in particular in hydrogen and ammonia production. Absorbent contains 35-45% N-methyldiethanolamine, 2-10% piperazine, 0.5-3.0% potassium carbonate, and additionally 0.5-5.0% aniline. Absorption is not accompanied with strong carbonization: up to 0.1 mole CO2 per 2 mole tertiary amine.
EFFECT: lowered equilibrium pressure and raised carbon dioxide absorption rate al low carbonization degrees.
2 dwg, 6 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ABSORBENT FOR REMOVAL OF CARBON DIOXIDE FROM GAS MIXTURES | 2002 |
|
RU2244587C2 |
| METHOD OF INCREASING EFFICIENCY OF REMOVING CARBON DIOXIDE AND HYDROGEN SULPHIDE FROM METHANE-CONTAINING GAS MIXTURES | 2022 |
|
RU2823675C2 |
| METHOD OF REMOVAL OF THE ACIDIC NATURE GASEOUS INGREDIENTS FROM GASES | 1999 |
|
RU2227060C2 |
| METHOD OF EXTRACTION OF CARBON DIOXIDE FROM GASSES | 2003 |
|
RU2275231C2 |
| METHOD OF BOOSTING PRESSURE OF CARBON DIOXIDE IN COURSE OF ITS ABSORPTIVE DISCHARGE FROM GASEOUS MIXTURE (THERMOSORBATE COMPRESSOR) | 2006 |
|
RU2329858C2 |
| METHOD OF CLEANING GAS FLOWS FROM CARBON DIOXIDE | 2014 |
|
RU2589166C1 |
| METHOD OF INCREASING PRESSURE OF CARBON DIOXIDE IN COURSE OF ITS ABSORPTIVE DISCHARGE FROM GASEOUS MIXTURES | 2006 |
|
RU2329859C2 |
| ABSORBING COMPOSITIONS FOR REMOVING ACID GASES FROM GAS STREAMS | 2000 |
|
RU2239488C2 |
| Method for obtaining carbon dioxide for soda production by the ammonia method | 2018 |
|
RU2751200C2 |
| METHOD OF PURIFICATION OF GAS MIXTURES FROM CARBON DIOXIDE (ALTERNATIVES) AND A DEVICE FOR PURIFICATION OF GAS MIXTURES FROM CARBON DIOXIDE (ALTERNATIVES) | 2004 |
|
RU2252063C1 |
