Process for calcining a denitrating catalyst
US5004718A · kind A · utility
3Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Aug 21, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/517
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for calcining a sulfate-containing denitrating catalyst to reduce the sulfate content therein is provided. A plurality of catalyst units are arranged on a reticulating belt in a calcining furnace. The reticulate belt is continuously moving within the furnace. Fresh hot air is passed through the denitrating catalyst units in a first direction and then in a second direction. By controlling the rate of hot air flow, the content of sulfate group in the denitrating catalyst is reduced to about 4-7% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.