Carrying out endothermic processes in fast fluidized reactor with conventionally fluidized holding reactor

US4076796A · kind A · utility

Assignee

• Metallgesellschaft AG · DE

Inventors

• Lothar Reh · Zumikon, CH
• Hans-Werner Schmidt · Bayreuth, DE
• Ludolf Plass · Kronberg, DE

Key dates

• Filing date: May 27, 1976
• Grant date: Feb 28, 1978
• Expiry date: May 27, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Endothermic processes are carried out in a fluidized-bed reactor which is connected to a holding reactor, solids being recirculated between the two reactors. The primary fluidized-bed reactor uses a fast-fluidized bed system in which the solids concentration decreases continuously from the bottom to the top of the reactor. After the necessary residence time in the holding reactor, solids are discharged. Solids are entrained with the gas stream from the primary reactor and are separated therefrom to be delivered to the holding reactor. The reaction is controlled by regulating the rate of recirculation of solids from the holding reactor to the fast fluidized bed reactor.