Method and device for cooling a fluid stream of an electrolysis unit and for obtaining water

US10815649B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Marc Hanebuth · Hamburg, DE
• Andreas Reiner · Pocking, DE
• Markus Ungerer · Steinheim an der Murr, DE
• Knut Siegert · Uttenreuth, DE

Key dates

• Filing date: Dec 21, 2017
• Grant date: Oct 27, 2020
• Expiry date: Dec 21, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/129
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for cooling a fluid from an electrolysis unit and extracting water from ambient air comprising: conducting moist air having a first molar amount of water and raw water into an evaporator unit in a counterflow at a temperature at or below the boiling temperature of the water; evaporating pure water from the raw water into the moist air and cooling the raw water; conducting the cooled raw water into a heat exchanger thereby cooling the fluid stream of the electrolysis unit; conducting the moist air and the pure water into a water extraction unit; separating a second molar amount of the pure water off from the moist air in the water extraction unit, wherein a third molar amount of water remaining in the air is less than the first; conducting the preheated raw water back to the evaporator; and conducting the cooled fluid back into the electrolysis unit.