Sequential combustion with dilution gas mixer

US10330319B2 · kind B2 · utility

Assignee

• ANSALDO ENERGIA SWITZERLAND AG · CH

Inventors

• Michael Duesing · Rheinfelden (Baden), DE
• Luis Tay Wo Chong Hilares · Neuenhof, CH
• Mirko Ruben Bothien · Bellinzona, CH
• Jaan Hellat · Baden, CH
• Bruno Schuermans · La Tour-de-Peilz, CH

Key dates

• Filing date: Apr 22, 2015
• Grant date: Jun 25, 2019
• Expiry date: Mar 26, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E20/16
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention refers to a sequential combustor arrangement including a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The mixer includes a plurality of injection pipes pointing inwards from the side walls of the mixer for admixing the dilution gas to cool the hot flue gases leaving the first combustion chamber with a low pressure drop. The disclosure further refers to a method for operating a gas turbine with such a combustor arrangement.