Process and equipment arrangement for the preheating and multistage deaeration of water

US6145315A · kind A · utility

Assignee

• Asea Brown Boveri, S.A. · CH

Inventors

• Francisco Blangetti · Baden, CH
• Hans-Jurgen Eberle · Munich, DE

Key dates

• Filing date: Jun 21, 1999
• Grant date: Nov 14, 2000
• Expiry date: Jun 21, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E20/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a process for preheating and deaerating make-up water in a power generation plant by steam, the required make-up water is initially heated up to the saturation temperature without substantial deaeration and is subsequently deaerated. The steam used for heating and deaerating is expanded steam from a condenser, which steam is almost fully condensed during the heating of the make-up water and is recycled to the steam circulation of the power generation plant.