Method for homogenizing the heat distribution as well as decreasing the amount of NO
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0728502
(2010-03-22)
|
등록번호 |
US8075303
(2011-11-29)
|
우선권정보 |
SE-2009-950178(2009-03-20) |
발명자
/ 주소 |
- Ekman, Tomas
- Ritzén, Ola
- Lugnet, Anders
- Gartz, Mats
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
2 |
초록
▼
Method for homogenizing the heat distribution as well as decreasing the amount of NOx in combustion products when operating an industrial furnace with at least one conventional burner using air as an oxidant. An additional oxidant including at least 50% oxygen gas is caused to stream into the furnac
Method for homogenizing the heat distribution as well as decreasing the amount of NOx in combustion products when operating an industrial furnace with at least one conventional burner using air as an oxidant. An additional oxidant including at least 50% oxygen gas is caused to stream into the furnace through a lance. The total amount of oxygen supplied is balanced against the amount of fuel being supplied through the air burner. Firstly, the combination of at least 40% of the supplied oxygen is supplied through the additional oxidant, the lance is arranged at a distance from the air burner of at least 0.3 meters, and the additional oxidant streams into the furnace through the lance with at least sonic velocity, and secondly the additional oxidant is supplied only when the air burner is operated at a certain lowest power or at a higher power.
대표청구항
▼
The invention claimed is: 1. Method for homogenizing the heat distribution as well as decreasing the amount of NOx in the combustion products when operating an industrial furnace (1) with at least one conventional burner (2a, 2b, 2c, 2d) using air as oxidant, where a lance (3a, 3b, 3c, 3d) is introd
The invention claimed is: 1. Method for homogenizing the heat distribution as well as decreasing the amount of NOx in the combustion products when operating an industrial furnace (1) with at least one conventional burner (2a, 2b, 2c, 2d) using air as oxidant, where a lance (3a, 3b, 3c, 3d) is introduced into the furnace (1), the method comprising streaming an additional oxidant comprising at least 50% oxygen gas into the furnace (1) through the lance (3a, 3b, 3c, 3d), and the total amount of oxygen supplied, partly through the air, partly through the additional oxidant, is supplied in a predetermined ratio in relation to the amount of fuel being supplied through the air burner (2a, 2b, 2c, 2d), whereinat least 40% of the supplied oxygen is supplied through the additional oxidant,the lance (3a, 3b, 3c, 3d) is caused to be arranged at a distance from the air burner (2a, 2b, 2c, 2d) of at least 0.3 meters,the additional oxidant is caused to stream into the furnace (1) through the lance (3a, 3b, 3c, 3d) with at least sonic velocity, andthe additional oxidant is supplied only when the air burner (2a, 2b, 2c, 2d) is operated at or above a certain lowest power.
이 특허에 인용된 특허 (2)
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Simpson, Neil George; Prusia, Greg Floyd; Clayton, Thomas G.; Richardson, Andrew Peter; LeBlanc, John R., Method of heating a glass melting furnace using a roof mounted, staged combustion oxygen-fuel burner.
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Kobayashi William T. (San Paulo-SP BRX) Francis ; Jr. Arthur W. (Monroe NY) Kobayashi Hisashi (Putnam Valley NY), Staged combustion for reducing nitrogen oxides.
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