Regenerative heat sensor reservoir for combustion burner
AssigneesNKK Corporation, Nippon Furnace Kogyo Kaisha, Ltd., NGK Insulators, Ltd.
InventorsIsao Mori, Yutaka Suzukawa, Jun Sudo, Yoshiyuki Kasai
Life of this patent
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Abstract
In a regenerator made of materials each comprising alumina as a main ingredient, and used for the regenerative combustion burner which is fired with alternately and repeatedly operations of heat storage by the passage of high-temperature flue gas in a fixed time and heating of combustion air by passage of the combustion air in a next fixed time, under the condition that the flue gas includes metal dust; the alumina purities in the materials for the regenerator are lowered in the order, the high-temperature, medium-temperature and low-temperature parts of the regenerator.
Claims6
Regenerator for regenerative combustion burner;
- wherein said regenerative combustion burner being fired with alternately and repeatedly operations of heat storage by the passage of high-temperature flue gas in a fixed time and heating of combustion air by passage of the combustion air in a next fixed time,
- wherein said regenerator being made of the materials each comprising alumina as a main ingredient, and
- wherein said regenerator being used under the condition that the flue gas includes metal dust;
- which regenerator is characterized by the fact that the alumina purities in the materials for the regenerator are lowered in the order, the high-temperature, medium-temperature and low-temperature parts of the regenerator.
Regenerator for regenerative combustion burner;
- wherein said regenerative combustion burner being fired with alternately and repeatedly operations of heat storage by the passage of high-temperature flue gas in a fixed time and heating of combustion air by passage of the combustion air in a next fixed time,
- wherein said regenerator being made of the materials each comprising alumina as a main ingredient, and
- wherein said regenerator being used under the condition that the flue gas includes metal dust;
- which regenerator is characterized by the fact that the alumina purity in the material for the high-temperature part of the regenerator where the flue gas is exceeding 1200° C. is not less than 98%, that for the medium-temperature part of the regenerator where the flue gas is exceeding 1100° C. and not higher than 1200° C. is 95%, and the material for the low-temperature part of the regenerator where the flue gas is not higher than 1100° C. is cordierite.
Regenerator for regenerative combustion burner;
- wherein said regenerative combustion burner being fired with alternately and repeatedly operations of heat storage by the passage of high-temperature flue gas in a fixed time and heating of combustion air by passage of the combustion air in a next fixed time,
- wherein said regenerator being made of the materials each comprising alumina as a main ingredient, and
- wherein said regenerator being used under the condition that the flue gas includes no metal dust;
- which regenerator is characterized by the fact that the alumina purity in the material for the high-temperature part of the regenerator where the flue gas is exceeding 1300° C. is not less than 95%, and the material for the low-temperature part of the regenerator where the flue gas is not higher than 1300° C. is cordierite.
Dependencies are inferred from the claim text.