Patent · US Expired

Heat-recovery boiler

US7322317B2 · kind B2 · utility

0Cited by

5References

9Claims

0Family size

Assignee

Lurgi GmbH · DE

Inventors

Walter Boll · Frankfurt am Main, DE
Werner Roll · Merkendorf, DE
Christoph Erdmann · Ulm, DE
Ulrich Wagner · Bernburg, DE
Thomas Wurzel · Oberursel, DE

Key dates

Filing date	Feb 7, 2004
Grant date	Jan 29, 2008
Priority date	—
Expiry date	Feb 7, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/129
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to a heat-recovery boiler (3) consisting of a tube bundle heat exchanger (7) which is incorporated into a pressure vessel (2) downstream of a gasification device. Displacement bodies (9) are inserted into pipes which are flowed around by hot process gas. According to said invention, in order to avoid corrosion problems like metal dusting, said displacement bodies (9) are made of graphite.

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