Liquid sulphur dioxide manufacture
US4578262A · kind A · utility
6Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/129
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for the production of liquid sulphur dioxide in a sulphur dioxide facility forming part of a sulphuric acid plant wherein a portion of the sulphur dioxide produced in a sulphur burning furnace is directed to a sulphur dioxide liquefaction means and the resultant tail gas is recycled to the furnace. Relatively high sulphur dioxide concentrations are maintained in all parts of the sulphur dioxide production cycle allowing higher strength sulphur dioxide gases to be generated without overheating the furnace and also lower power requirements in the sulphur dioxide liquefaction step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.