Steam generator for producing superheated steam in a waste incineration plant

US8863675B2 · kind B2 · utility

Assignee

• MVV Umwelt GmbH · DE

Inventors

• Johannes Günther · Seckmauern, DE
• Hansjörg Roll · Frankenthal (Pfalz), DE
• Peter Knapp · Wettingen, CH
• Uwe Zickert · Schifferstadt, DE

Key dates

• Filing date: Dec 7, 2009
• Grant date: Oct 21, 2014
• Expiry date: Apr 4, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F22G7/14
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A steam generator for producing superheated steam in a waste incineration plant, includes a boiler housing having a combustion chamber with walls having an evaporator. The evaporator has tubes carrying water and being acted upon by heat energy released during incineration of waste, for producing superheated steam. A wall superheater for increasing temperature of the superheated steam includes a plurality of tubes in a wall of the boiler housing for carrying superheated steam being protected against flue gas from an incineration process by plate-like elements formed of a corrosion-proof material. The boiler housing includes an evaporator housing section having the water-carrying tubes and a wall-superheater housing section spatially separated from the evaporator housing section and having the superheated steam-carrying tubes. The wall-superheater housing section is movable relative to and disposed downstream of the evaporator housing section in flue gas flow direction.