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Glass melting method and glass melting furnace

A glass melting and glass melting furnace technology, which is used in glass furnace equipment, glass production, glass manufacturing equipment, etc.

Active Publication Date: 2013-06-26
OHARA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, for oxygen combustion, since more than three times the moisture of air combustion is generated, the method described in Patent Document 4 cannot be used to adjust the moisture concentration in the glass by adjusting the moisture concentration in the gas as described above.

Method used

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  • Glass melting method and glass melting furnace
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Examples

Experimental program
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Effect test

Embodiment 1

[0046] A melting test of soda-lime glass was performed. A melting furnace 1 with a melting amount of 2 tons / day and a capacity of the adjustment bath 7 of 4 tons was used.

[0047] Starting from the state where 50% of the molten glass 23 was stored in the adjustment bath 7, the raw material glass 22 was melted, and the molten glass was stored for 24 hours until reaching a predetermined amount. During this period, for thermal compensation, the electric heater 11 in the upper space is used to adjust the temperature of the atmospheric gas and Joule heating is performed by the impregnated platinum electrode.

[0048] Dry nitrogen preheated by heat exchange with the combustion exhaust gas of the melting tank 2 was used for the atmospheric gas. The preheating temperature is about 300°C. A restrictor is provided on the exhaust port 24 for the adjustment tank, so that the inside of the adjustment tank 3 is always kept at a positive pressure, and the intrusion of air from the exhaust...

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Abstract

In a glass melting method, a glass melting furnace having a melting tank is used, an adjusting tank is arranged in the downstream of a melting glass flow in the melting tank, equilibrium state of water concentration on an interface between an ambient gas and a melting glass surface is controlled by adjusting the temperature of the adjusting tank and a quality of a gas to be introduced into the adjusting tank.

Description

technical field [0001] The present invention relates to a glass melting method and a glass melting furnace for efficiently producing glass products in the production of glass products utilizing oxygen combustion. [0002] This application claims priority based on Japanese Patent Application No. 2006-72235 filed in Japan on March 16, 2006, and uses the content thereof here. Background technique [0003] In recent years, in glass melting furnaces for producing glass industrially, oxygen combustion is often used for glass that requires high-temperature melting (Patent Documents 1 to 3). Especially for the melting of glass that requires high-temperature melting in batch furnaces such as Richi kiln, oxygen combustion is often used due to the low thermal efficiency in air combustion. [0004] However, if oxygen combustion is used for high-temperature melting of glass, since the combustion gas contains a large amount of carbon dioxide and water, there is a concern that the water c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/02C03B5/16
CPCC03B5/235C03B5/04C03B5/2353Y02P40/50
Inventor 饭野公夫村上真二
Owner OHARA