Patent · US Expired

Thermally insulated metal surface protected against metal dusting corrosion

US6099922A · kind A · utility

3Cited by

3References

4Claims

0Family size

Assignee

Metallgesellschaft AG · DE

Inventors

Walter Boll · Frankfurt am Main, DE
Friedrich Hohmann · Langen, DE
Werner Roell · Konstanz, DE

Key dates

Filing date	Mar 3, 1997
Grant date	Aug 8, 2000
Priority date	—
Expiry date	Mar 3, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1317
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The metal surface protected against metal-dusting corrosion has an insulating layer of a gas-permeable, thermally insulating material. The side of the thermal insulating layer that is colder during operation is in direct vicinity of the metal surface, and the side of the insulating layer that is hotter during operation is heated by a gas stream containing carbon monoxide, which in addition contains hydrogen and/or steam and has a temperature in the range from 300 to 1700.degree. C. In the region between the metal surface to be protected and the hot side of the insulating layer a catalyst is provided for reacting carbon monoxide with hydrogen and/or steam.

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