Gecl4 and/or sicl4 recovery process from optical fibers or...

C - Chemistry – Metallurgy – 01 – G

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C01G 17/04 (2006.01) C01B 33/08 (2006.01)

Patent

CA 2707503

A method is provided for producing GeCl4 with or without SiCl4 from optical fibers, the method comprises the steps of: reacting comminuted optical fibers including germanium and optionally silicon oxides with a reagent including a solid carbonaceous reducing agent, chlorine and a boron compound to obtain a gaseous product including gaseous GeCl4, gaseous SiCl4, and gaseous BCl3 in accordance with the reactions: 2BCl3(g) + 1.5GeO2 = 1.5GeCl4(g) + B2O3; 2BCl3(g) + 1.5 SiO2 = 1.5 SiCl4(g) + B2O; B2O3 + 1.5C + 3Cl2 = 2BCl3(g) + 1.5CO2; and then condensing the gaseous GeCl4, BCl3 and optionally SiCl4 into liquid GeCl4, BCl3 and optionally SiCl4. The invention further provides a method for producing SiCl4 (and optionally GeCl4) from glassy residues obtained from optical fiber manufacturing and wasted optical cables. The method includes the steps of: reacting comminuted glassy residues with a reagent including a solid carbonaceous reducing agent, a salt, a boron compound to obtain a gaseous product including SiCl4, BCl3, and optionally GeCl4; and then condensing the gaseous SiCl4, BCl3 (with or without GeCl4) into liquid SiCl4, BCl3 and GeCl4. There is also provided a method for producing SiCl4 from a SiO2 containing material.

L'invention concerne un procédé pour produire du GeCl4 avec ou sans SiCl4 à partir de fibres optiques, le procédé comprenant les étapes qui consistent à : faire réagir des fibres optiques broyées comprenant du germanium et facultativement des oxydes de silicium avec un réactif comprenant un agent réducteur carboné solide, du chlore et un composé du bore pour obtenir un produit gazeux comprenant du GeCl4 gazeux, du SiCl4 gazeux et du BCl3 gazeux conformément aux réactions : 2BCl3(g) + 1,5GeO2 = 1,5GeCl4(g) + B2O3; 2BCl3(g) + 1,5 SiO2 = 1,5 SiCl4(g) + B2O; B2O3 + 1,5C + 3Cl2 = 2BCl3(g) + 1,5CO2; puis à condenser le GeCl4, le BCl3 et facultativement le SiCl4 gazeux en GeCl4, BCl3 liquides et facultativement SiCl4 liquide. L'invention concerne en outre un procédé pour produire du SiCl4 (et facultativement du GeCl4) à partir de résidus de verre résultant de la fabrication de fibres optiques et de câbles à fibres optiques mis au rebut. Le procédé comprend les étapes consistant à : faire réagir des résidus de verre broyés avec un réactif comprenant un agent réducteur carboné solide, un sel et un composé de bore pour obtenir un produit gazeux comprenant SiCl4, BCl3 et facultativement GeCl4; et ensuite à condenser le SiCl4 et le BCl3 (avec ou sans GeCl4) gazeux en SiCl4, BCl3 et GeCl4 liquides. L'invention concerne également un procédé pour produire du SiCl4 à partir d'une matière contenant du SiO2.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Gecl4 and/or sicl4 recovery process from optical fibers or... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gecl4 and/or sicl4 recovery process from optical fibers or..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gecl4 and/or sicl4 recovery process from optical fibers or... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2004684

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.