| 摘要 |
THE INVENTION PROVIDES A PROCESS FOR REDUCING THE LEVEL OF HYDROGEN SULPHIDE IN A LIQUID OR GAS BY TREATMENT OF THE LIQUID OR GAS WITH AN H2S-SCAVENGER PRODUCT DERIVABLE BY THE REACTION OF A CARBONYL GROUP-CONTAINING COMPOUND WITH AN ALCOHOL, THIOL, AMIDE, THIOAMIDE, UREA OR THIOUREA. THE CARBONYL GROUP-CONTAINING COMPOUND IS PREFERABLY FORMALDEHYDE, AND PREFERABLY THE PRODUCT IS DERIVABLE BY REACTION OF FORMALDEHYDE WITH AN AMINE-FREE ALCOHOL OR UREA SELECTED FROM ETHYLENE GLYCOL, PROPYLENE GLYCOL, GLYCEROL, DIETHYLENE GLYCOL, TRIETHYLENE GLYCOL, ETHYL ALCOHOL, N-BUTANOL, A SUGAR, A LOW MOLECULAR WEIGHT POLYVINYL ALCOHOL, CASTOR OIL FATTY ACID AND UREA. MORE ESPECIALLY, THE SCAVENGER PRODUCT IS USED WITH AN AMINE, ESPECIALLY MONOETHANOLAMINE.
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