Method and device for carrying out endothermic gas phase-solid or gas-solid reactions

US11691115B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Grigorios Kolios · Ludwigshafen, DE
• Bernd Zoels · Obrigheim, DE
• Matthias Kern · Lilienthal, DE
• Jens Bernnat · Havelsee, DE
• Rene Koenig · Neustadt, DE
• Friedrich Glenk · Mannheim, DE
• Achim Wechsung · Ludwigshafen, DE

Key dates

• Filing date: Oct 26, 2017
• Grant date: Jul 4, 2023
• Expiry date: Oct 17, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/36
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for conducting endothermic gas phase or gas-solid reactions, wherein the endothermic reaction is conducted in a production phase in a first reactor zone, the production zone, which is at least partly filled with solid particles, where the solid particles are in the form of a fixed bed, of a moving bed and in sections/or in the form of a fluidized bed, and the product-containing gas stream is drawn off from the production zone in the region of the highest temperature level plus/minus 200 K and the product-containing gas stream is guided through a second reactor zone, the heat recycling zone, which at least partly comprises a fixed bed, where the heat from the product-containing gas stream is stored in the fixed bed, and, in the subsequent purge step, a purge gas is guided through the production zone and the heat recycling zone in the same flow direction, and, in a heating zone disposed between the production zone and the heat recycling zone, the heat required for the endothermic reaction is introduced into the product-containing gas stream and into the purge stream or into the purge stream, and then, in a regeneration phase, a gas is passed…