Patent · US Active

Method for producing hydrogen and sulphuric acid

US7794685B2 · kind B2 · utility

4Cited by

4References

17Claims

0Family size

Assignee

Outotec Oyj · FI

Inventors

Wolf-Christoph Rauser · Frankfurt am Main, DE
Michael Gasik · Tallinn, EE
Heljä Peltola · Pori, FI
Pekka Taskinen · Espoo, FI

Key dates

Filing date	Jan 17, 2008
Grant date	Sep 14, 2010
Priority date	—
Expiry date	Jan 17, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/36
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method for producing gaseous hydrogen and strong sulphuric acid (97-100 wt-%) simultaneously from sulphur dioxide gas and water. Sulphur dioxide gas stream is divided into two separate sub-streams, the first sub-stream is routed for water decomposition in a partial thermochemical cycle of the hydrogen and sulphuric acid production and the second sub-stream is fed to the oxidation of the sulphur dioxide to sulphur trioxide.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.