Elemental sulfur dissolution and solvation
US11572514B2 · kind B2 · utility
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17References
20Claims
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Key dates
| Filing date | Oct 5, 2021 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Oct 5, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/4075
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for preventing elemental sulfur deposition from a hydrocarbon fluid is disclosed. A mercaptan is added to a hydrocarbon fluid that has elemental sulfur and reacted with the elemental sulfur to produce a disulfide and hydrogen sulfide. Amines and/or surfactants can assist with the process. Secondary reactions between the disulfide and the elemental sulfur result in a polysulfide and a solvated sulfur-disulfide complex. The disulfide, hydrogen sulfide, polysulfide and solvated sulfur-disulfide complex do not deposit, and can optionally be removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.