Methods and compounds for improving sulfide scavenging activity
US8663457B2 · kind B2 · utility
3Cited by
13References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2230/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for reducing sulfides from fluid streams are provided. The methods comprise adding secondary amine-formaldehyde adduct (SAFA) scavengers to fluid streams. The SAFA scavengers added comprise less than about 40 wt % N-methyl secondary amines of the total weight of SAFA scavengers. Methods for distilling N-methyl secondary amines from secondary amine-formaldehyde adduct (SAFA) scavengers are also provided. Purified SAFA scavengers are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.