Melting vitrifiable material with a biomass-type fuel

Patent metadata

Field	Value
Publication number	US-12497322-B2
Application number	US-202117792330-A
Country	US
Kind code	B2
Filing date	Jan 14, 2021
Priority date	Jan 15, 2020
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A mixture of biomass and vitrifiable raw material for introducing into a fuel combustion furnace for the melting of a vitrifiable inorganic material, such as glass or rock or a silicate, includes an oleaginous biomass, the use of which reduces the damage to the equipment for metering and transporting the vitrifiable raw material.

First claim

The invention claimed is:

1 . A mixture consisting essentially of biomass and vitrifiable raw material for introducing into a furnace for the melting of a vitrifiable inorganic material, wherein the biomass comprises oleaginous seeds and/or seed husks of oleaginous seeds forming an oleaginous biomass.

2 . The mixture as claimed in claim 1 , wherein the biomass represents from 1% to 50% by weight of the mass of the mixture.

3 . The mixture as claimed in claim 1 , wherein the oleaginous biomass represents more than 50% by weight of the biomass.

4 . The mixture as claimed in claim 2 , wherein the oleaginous biomass is seeds or seed husks of at least one following plant species: sunflower, rapeseed, soybean, palm, peanut, olive or squash.

5 . The mixture as claimed in claim 1 , wherein the vitrifiable raw material comprises silica and at least one of the following compounds: alkali metal oxide or hydroxide or carbonate, alkaline earth oxide or hydroxide or carbonate.

6 . A process for the melting of a vitrifiable inorganic material comprising introducing a preconstituted mixture of claim 1 into a fuel combustion furnace, then heating said mixture leading to melting of the vitrifiable inorganic material.

7 . The process as claimed in claim 6 , wherein the furnace is a submerged combustion furnace.

8 . The process as claimed in claim 6 , wherein the preconstituted mixture is introduced into the furnace under a surface of the materials being melted.

9 . The process as claimed in claim 6 , wherein the preconstituted mixture is introduced into the furnace by flow or pushing.

10 . The process as claimed in claim 9 , wherein the introduction of the preconstituted mixture is carried out by pushing by an endless screw.

11 . The process as claimed in claim 6 , wherein the biomass provides from 5% to 80% of a net calorific value of the fuel.

12 . The process as claimed in claim 6 , wherein the molten material in the furnace has a temperature of between 1200° C. and 1700° C.

13 . The process as claimed in claim 6 , wherein the vitrifiable inorganic material is extracted from the furnace and transformed into fiber in a fiberizing device.

14 . The process as claimed in claim 6 , wherein the furnace comprises walls cooled by a stream of water.

15 . A method comprising providing a mixture consisting essentially of an oleaginous biomass in addition with vitrifiable raw material for the purpose of reducing damage to an equipment for metering and transporting said vitrifiable raw material, wherein the oleaginous biomass comprises oleaginous seeds and/or seed husks of oleaginous seeds forming an oleaginous biomass.

16 . The mixture as claimed in claim 2 , wherein the biomass represents from 10% to 40% by weight of the mass of the mixture.

17 . The mixture as claimed in claim 3 , wherein the oleaginous biomass represents more than 90% by weight of the biomass.

18 . The mixture as claimed in claim 17 , wherein the oleaginous biomass represents 100% by weight of the biomass.

19 . The mixture as claimed in claim 4 , wherein the oleaginous biomass is sunflower hulls.

20 . The process as claimed in claim 6 , wherein the vitrifiable inorganic material is glass or rock or a silicate.

Assignees

• Saint Gobain Isover

Inventors

• Guillet Antoine
• Vlad Alexandru

Classifications

• F27D2009/0013

  the fluid being water · CPC title

• F27D9/00

  Cooling of furnaces or of charges therein (casings, linings, walls or roofs incorporating cooling arrangements F27D1/12) · CPC title

• C03B2211/23

  using oxygen, i.e. pure oxygen or oxygen-enriched air · CPC title

• C03B37/022

  from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres {, undulated fibres, fibres presenting a rough surface (C03B37/025 takes precedence)} · CPC title

• C03B5/44

  Cooling arrangements for furnace walls · CPC title