Guard bed containing lead compounds upstream of a bed of copper-containing catalyst to prevent its contamination by chlorine and sulphur contaminants
US7501112B2 · kind B2 · utility
2Cited by
7References
7Claims
0Family size
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Inventor
Key dates
| Filing date | Mar 23, 2006 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Mar 27, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A combination comprising a bed of a particulate copper-containing catalyst and, a guard bed of a particulate composition containing a) lead and/or at least one lead compound that reacts with hydrogen chloride and b) a support therefor. The lead compound is preferably lead nitrate. The combination is of particular utility for the low temperature shift reaction wherein carbon monoxide is reacted with steam to produce hydrogen and carbon dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.