Recovery of sulfur trioxide heat of absorption
US9162890B2 · kind B2 · utility
2Cited by
14References
65Claims
0Family size
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Key dates
| Filing date | Mar 17, 2014 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Mar 17, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/129
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A contact process for manufacture of sulfuric acid in which the vapor phase heat of formation of sulfuric acid in the sulfur trioxide conversion gas and the heat of absorption of SO3 in sulfuric acid is recovered by transfer of heat from the absorption acid to high pressure boiler feed water that is fed to a waste heat boiler where steam is generated at a pressure of at least 40 bar by transfer of heat from sulfur dioxide combustion gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.