Adsorbent for contaminant removal from C4 hydrocarbons
US10744492B2 · kind B2 · utility
0Cited by
9References
20Claims
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Key dates
| Filing date | Nov 3, 2017 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Nov 3, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/104
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for removing contaminants from olefin containing C4 streams. The streams are contacted with an X based zeolite adsorbent comprising greater than 88% X zeolite at a SiO2/Al2O3 ratio of less than 2.5 and an alkali metal salt present in excess of an amount required to achieve full exchange of cation sites on the X based zeolite. The resulting alkali oxide on a volatile free basis is less than 1% (by mass) of the X based adsorbent. The contaminants that are removed include sulfur, oxygenate, and nitrogen based contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.