Method of removing contaminant from feedstock streams
US4344841A · kind A · utility
12Cited by
11References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1979 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Oct 1, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G67/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Contaminants such as surfactants, antifoam agents, viscosifying agents, corrosion inhibitors, other agents used in tertiary recovery of enhanced oil recovery operations, and the like are removed from a contaminated feedstock stream by contacting said feedstock stream with an adsorbent selected from montmorillonite clays, amorphous silica, and mixtures thereof with one another and/or with bauxite. In a further aspect, the thus purified feedstock stream is hydrodesulfurized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.