Stabilized chelating agents for removing hydrogen sulfide
US4891205A · kind A · utility
8Cited by
23References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Soluble chemical compounds having a high affinity for hydroxyl radicals are effective stabilizers for chelating agents used in the hydrogen sulfide removal process. The stabilizers include aromatic compounds, bromide ions, iodide ions, cyanides, nitrites, amino acids, sugars, ascorbates, alcohols, polyols, aliphatic aldehydes, compounds having unsaturated carbon-carbon bonds, dimethyl sulfoxide, organic disulfides, alkyl amines, and formates. The aromatic compounds have the additional benefit of combining with hydroxyl radicals to form chelating agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.