Hemlock Semiconductor Operations LLC

E.i. Dupont De Nemours and Company

Ohio State Innovation Foundation

Ted M Knowlton

Raymond Anthony Cocco

Michael John Molnar

S B Reddy Karri

John Victor Bucci

Max E Dehtiar

Patrick J Harder

Liang-Shih Fan

Fanxing Li

James W Reeves

Andrew Tong

John Findlay

Donald H Eastham

Fei Wang

Melvyn B Pell

Surya B R Karri

Sb Reddy Karri

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.

Tapered fluidized bed reactor and process for its use

A system and process for carrying out one or more chemical reactions are provided and include one or more chemical reactors having particulate solids forming a bed therein, and a gas stripping zone forming a non-mechanical seal between said reactors which includes a conduit connecting the reactors. The conduit includes an inlet for a stripping gas which is adapted to prevent process gas from passing between reactors while permitting particulate solids to pass between reactors.

Circulating fluidized bed with moving bed downcomers and gas sealing between reactors

The present invention is a process for feeding particulate material to a fluidized bed reactor operated at greater than atmospheric through a standpipe wherein the ratio of the absolute pressure where the standpipe enters the fluidized bed reactor to the absolute pressure where the particulate material enters the standpipe is at least about 1.5 and gas is injected into the standpipe at a velocity which is about 20-80 percent of the minimum fluidization velocity of the particulate material.

Process for injecting particulate material into a fluidized bed reactor

Growing community of inventors

Willowbrook, IL, United States of America

Ted M Knowlton