Reduction method and electrolysis system for electrochemical carbon dioxide utilization

US10760170B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Maximilian Fleischer · Ehrenkirchen, DE
• Philippe Jeanty · Munich, DE
• Ralf Krause · Dresden, DE
• Erhard Magori · Straubing, DE
• Nayra Sofia Romero Cuéllar · Hersbruck, DE
• Bernhard Schmid · Friedberg, DE
• Günter Schmid · Hemhofen, DE
• Kerstin Wiesner-Fleischer · Hohenkirchen, DE

Key dates

• Filing date: May 31, 2016
• Grant date: Sep 1, 2020
• Expiry date: Feb 15, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B9/17
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present disclosure relates to electrolysis. For example, an electrolysis system for carbon dioxide utilization may include: an electrolysis cell having an anode and a cathode, where carbon dioxide reduces at the cathode to at least one hydrocarbon compound or to carbon monoxide; first and second electrolyte reservoirs; a first product gas line from the first electrolyte reservoir; a second product gas line from the second electrolyte reservoir; a first connecting line supplying electrolyte from the first electrolyte reservoir to the anode; a second connecting line taking electrolyte from the anode to the second electrolyte reservoir; a third connecting line supplying electrolyte from the second electrolyte reservoir to the cathode; a fourth connecting line taking electrolyte from the cathode off to the first electrolyte reservoir; and a pressure-equalizing connection directly connecting the first and second electrolyte reservoirs.