PROCESS FOR THE TREATMENT OF GASES
An installation and a method are described for the treatment of a gas containing hydrogen sulphide, the gas (1) being washed in a first gas scrubber (5) with an alkaline wash liquid and the spent wash liquid (4) being treated in an aerobic reactor (6) with oxygen in the presence of sulphide-oxidisin...
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Format: | Patent |
Sprache: | eng ; spa |
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Zusammenfassung: | An installation and a method are described for the treatment of a gas containing hydrogen sulphide, the gas (1) being washed in a first gas scrubber (5) with an alkaline wash liquid and the spent wash liquid (4) being treated in an aerobic reactor (6) with oxygen in the presence of sulphide-oxidising bacteria and the effluent (9) from the aerobic reactor (6) being re-used as wash liquid (3) and the elementary sulphur formed during the treatment with oxygen being removed from the effluent (19), the effluent (13) from which sulphur has been removed being treated in an anaerobic reactor (17) with sulphate-reducing bacteria and returned to the aerobic reactor (6). The installation and the method can also be used for simultaneous removal of SO2, COS, CS2, NH3 and HCN.
Se describe una instalacion y un método para el tratamiento de un gas que contiene sulfuro de hidrogeno, el gas (1) será lavado en un primer lavador de gas (5) con un líquido de lavado alcalino y el líquido de lavado agotado (4) será tratado en un reactor aerobico (6) con oxígeno en presencia de bacterias oxidadas de sulfuro y el efluente (9) del reactor aerobico (6) será reutilizado como líquido de lavado (3) y el azufre elemental formado durante el tratamiento con un oxígeno será retirado o eliminado del efluente (19). EL efluente (13) a partir del cual se ha eliminado o retirado el azufre será tratado en un reactor anairobico (17) con bacterias reductoras de sulfato y regresando al reactor aerobico (6). La instalacion y el método también pueden ser utilizados para la eliminacion simultánea SO2, COS, CS2, NH4 y HCN. |
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