Production of chlorine and iron oxide from ferric chloride
US4144316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1978 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Apr 24, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B7/03
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved process is provided for producing chlorine and iron oxide in a fluidized-bed reactor by treating ferric chloride in the vapor phase with an excess of oxygen at a temperature of 550.degree. to 800.degree. C. in the presence of a catalyst made from sodium chloride and iron oxide. A carbonaceous fuel is fed to the reactor bed to supply supplemental heat. The improvement comprises using a fluidized-bed reactor in which a portion of the bed material is continuously recycled and the carbonaceous fuel is supplied in a pulverized solid form in an amount equal to between 1 and 9 percent of the weight of the iron chloride fed. The fuel has a stable ignition temperature in air of no higher than 500.degree. C. and contains hydrogen amounting to between 0.5 and 2.5 percent by weight of the fuel. The process is particularly useful for avoiding potential pollution problems associated with the disposal of iron chloride by-product from ilmenite chlorination processes while recovering valuable chlorine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.