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:
Jun. 05, 2001
Filed:
Oct. 21, 1999
Arthur Gough, Northallerton, GB;
BG plc, Berkshire, GB;
Abstract
A heat exchanger formed of two plates or stages with one being on top of the other and with a plurality of such heat exchangers stacked on each other. The first stage has an inlet opening, an inlet passage and passages opened to the end of the stage. The second stage has an inlet opening leading to passages which lead to an outlet passage and an outlet opening. The second stage also has an inlet opening leading to passages which have an outlet at the end. A combustible gas enters the passage region of the first stage where the mixture is preheated and then passes to a passage region of the first stage. Portions of the gas passages in the passage region contain a combustion promoting catalyst so that the gas burns in the passage region. The products of combustion leave through the outlet end and are conveyed to an inlet of the passage region of the second stage.