Tapered fluidized bed reactor and process for its use

US10265671B2 · kind B2 · utility

Assignee

• HEMLOCK SEMICONDUCTOR OPERATIONS LLC · US

Inventors

• John V. Bucci · Midland, US
• Raymond A. Cocco · Elmhurst, US
• Max Dehtiar · Saginaw, US
• Patrick J. Harder · Bay City, US
• S. B. Reddy Karri · Naperville, US
• Ted M. Knowlton · Willowbrook, US
• Michael Molnar · Midland, US

Key dates

• Filing date: Oct 4, 2018
• Grant date: Apr 23, 2019
• Expiry date: Oct 4, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2208/00991
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A fluidized bed reactor includes a gas distributor, a tapered section above the gas distributor, and an expanded head above the tapered section. The gas distributor defines a plurality of inlets surrounding a product withdrawal tube, which extends away from the fluidized bed reactor. The fluidized bed reactor is useful in a process for fluidizing relatively large particles, such as Geldart Group B particles and/or Geldart Group D particles, where said particles are in a bubbling fluidized bed residing, in whole or in part, in the tapered section. The fluidized bed reactor and process may be used for manufacturing polycrystalline silicon.