The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2008
Filed:
Feb. 07, 2004
Walter Boll, Frankfurt am Main, DE;
Werner Röll, Wächtersbach, DE;
Christoph Erdmann, Hofheim, DE;
Ulrich Wagner, Biendorf, DE;
Thomas Wurzel, Oberursel, DE;
Walter Boll, Frankfurt am Main, DE;
Werner Röll, Wächtersbach, DE;
Christoph Erdmann, Hofheim, DE;
Ulrich Wagner, Biendorf, DE;
Thomas Wurzel, Oberursel, DE;
Lurgi AG, Frankfurt am Main, DE;
Abstract
The invention relates to a heat-recovery boiler () consisting of a tube bundle heat exchanger () which is incorporated into a pressure vessel () downstream of a gasification device. Displacement bodies () 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 () are made of graphite.