Compositional analysis of a gas or gas stream in a chemical reactor and method for preparing chlorosilanes in a fluidized bed reactor

US10031082B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Thorsten Albert GOEBEL · Emmerting, DE
• Walter Haeckl · Zeilarn, DE
• Wolfgang Muenzer · Haag in Oberbayern, DE
• Uwe Paetzold · Burghausen, DE
• Natalia Sofina · Burghausen, DE

Key dates

• Filing date: Jun 17, 2014
• Grant date: Jul 24, 2018
• Expiry date: Feb 3, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/08
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The composition of a gas or gas stream containing AlCl3 in a chemical reactor is measured by removing AlCl3 from the gas and analyzing the gas by gas chromatography or spectroscopy. Chlorosilanes may be prepared in a fluidized bed reactor having a reactor height H0, in which supplied HCl reacts with silicon, wherein a temperature profile in the fluidized bed reactor is greater than S1(H/H0)=(a1−b1)*(1/(1+exp(−c1((H/H0)−d1))))+b1 and less than S2(H/H0)=(a2−b2)*(1/(1+exp(−c2((H/H0)−d2))))+b2, where a1=100° C., a2=300° C., b1=300° C., b2=400° C., c1=50, c2=20, d1=0.2, and d2=0.8.