Durable zinc ferrite sorbent pellets for hot coal gas desulfurization
US4732888A · kind A · utility
24Cited by
17References
9Claims
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Key dates
| Filing date | May 15, 1986 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | May 15, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/524
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Durable, porous sulfur sorbents useful in removing hydrogen sulfide from hot coal gas are prepared by water pelletizing a mixture of fine zinc oxide and fine iron oxide with inorganic and organic binders and small amounts of activators such as sodium carbonate and molybdenite; the pellets are dried and then indurated at a high temperature, e.g., 1800.degree. C., for a time sufficient to produce crush-resistant pellets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.