Methods and systems for destabilizing foam in equipment downstream of a submerged combustion melter

• US 9,096,452 B2
• Filed: 10/03/2012
• Issued: 08/04/2015
• Est. Priority Date: 06/17/2010
• Status: Active Grant

• Current Assignee: Johns Manville Corporation (Berkshire Hathaway Incorporated)
• Original Assignee: Johns Manville Corporation (Berkshire Hathaway Incorporated)
• Inventors: Charbonneau, Mark William, Huber, Aaron Morgan
• Primary Examiner(s): HERRING, LISA L
• Application Number:
  US13/644,104
• Publication Number:
  US 20140090424A1
• Time in Patent Office: 1,035 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: C03B 3/00 Charging the melting furnaces
• CPC Class Codes: C03B 5/20 Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch
• CPC Class Codes: C03B 5/225 Refining C03B5/18 takes precedence ; Refining agents C03C1/004
• CPC Class Codes: C03B 5/235 Heating the glass C03B5/02, C03B5/18, C03B5/225 take precedence
• CPC Class Codes: C03B 5/2356 Submerged heating, e.g. by using heat pipes, hot gas or submerged combustion burners bubblers C03B5/193
• CPC Class Codes: F23C 99/003 Combustion process using sound or vibrations for combustion engines F02B51/06, F02M27/08; liquid fuel burners using ultrasonic means for spraying the fuel F23D11/34
• CPC Class Codes: Y02P 40/50 Glass production, e.g. reusing waste heat during processing or shaping

Abstract

Methods and systems for de-stabilizing foam produced in submerged combustion melters. A molten mass of glass and bubbles is flowed into an apparatus downstream of a submerged combustion melter. The downstream apparatus includes a floor, a roof and a wall connecting the floor and roof, but is devoid of submerged combustion burners and other components that would increase turbulence of the molten mass. The molten mass has foam on at least a portion of a top surface of the molten mass. Certain methods include imposing a de-stabilizing force directly to the foam or to the molten mass and foam, where the de-stabilizing force may be a vibratory force, an acoustic wave force, a particulate-based force, or a non-particulate-based mechanical force. Systems for carrying out the methods are described.

Claims

1. A method comprising:

flowing a molten mass of glass and bubbles into an apparatus downstream of a submerged combustion melter, the downstream apparatus comprising a floor, a roof, and a wall connecting the floor and the roof, the downstream apparatus devoid of submerged combustion burners and other components that would increase turbulence of the molten mass, the molten mass having a foam layer on at least a portion of a top surface of the molten mass; and

imposing a vibratory de-stabilizing force directly to the foam layer and to the molten mass wherein the imposing of the vibratory de-stabilizing force employs a vibration apparatus connected to the downstream apparatus via one or more connecting members, the one or more connecting member connected to one or more of the floor, the wall, and the roof of the downstream apparatus, the vibration apparatus imposing the vibratory de-stabilizing force having a frequency and amplitude to the molten mass and foam layer sufficient to de-stabilize bubbles in one or more portions or locations of the foam layer and cause at least some of the bubbles in the foam layer to break.

2. The method of claim 1 wherein the vibration apparatus exerts the vibratory force, the vibration apparatus mechanically connected to the wall and roof, or only the roof, of the downstream apparatus.

3. The method of claim 2 wherein the vibration apparatus is selected from the group consisting of electric, hydraulic, and pneumatic vibration apparatus.

4. The method of claim 2 wherein the imposing of a vibratory force comprises imposing a motion having a frequency and amplitude to the glass and foam layer sufficient to de-stabilize bubbles in the foam layer and cause at least a majority of them to break.

5. The method of claim 4 comprising varying the frequency and/or amplitude to identify an optimal frequency for de-stabilizing the majority of the bubbles in the foam lave and cause at least a majority of them to break.