Patent · US Active

Method for treating waste gases from plants for pig iron production

US9377242B2 · kind B2 · utility

2Cited by

2References

9Claims

0Family size

Assignee

Primetals Technologies Austria GmbH · AT

Inventors

Robert Millner · Loosdorf, AT
Gerald Rosenfellner · Griffen, AT

Key dates

Filing date	Aug 22, 2012
Grant date	Jun 28, 2016
Priority date	—
Expiry date	Jan 22, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P30/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method and a system for treating waste gases (4) from plants (32, 33) for pig iron production, wherein a first sub-stream (51) of the waste gas is subjected to an at least partial conversion of CO into CO2 after the addition of water and/or water vapor (10) and the waste gas (4) is then subjected to CO2 capture. To be able to set a variable H2/CO ratio in the waste gas, a further sub-stream (52) of the waste gas is not subjected to a conversion of CO into CO2, but is subjected to CO2 capture separately from the first sub-stream (51).

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