发明申请
- 专利标题： Method and apparatus for heat treatment
- 专利标题（中）： 热处理方法和装置
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申请号： US10528546申请日： 2003-09-25
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公开(公告)号： US20050239005A1公开(公告)日： 2005-10-27
- 发明人: Anders Lugnet , Tomas Ekman
- 申请人： Anders Lugnet , Tomas Ekman
- 申请人地址： DE Wiesbaden 65189
- 专利权人： Linde AG
- 当前专利权人： Linde AG
- 当前专利权人地址： DE Wiesbaden 65189
- 优先权： SE0202836-3 20020925
- 国际申请： PCT/SE03/01492 WO 20030925
- 主分类号： F23C9/00
- IPC分类号： F23C9/00 ; F23D14/22 ; F23D14/32 ; F23C5/00 ; F23M3/02
摘要：
A method and an apparatus for heat-treatment of materials, preferably metals, are provided. The method comprises the following steps: providing and maintaining a flame by supplying a burner with fuel and gas containing at least 80 percent by volume oxygen; creating an oxygen-hot exhaust mixture by recirculating exhausts from the flame to the gas containing oxygen by means of an ejector effect; mixing the oxygen-exhaust mixture and the fuel; and providing a secondary recirculation by recirculating exhausts from the flame to the oxygen-exhaust-fuel mixture. The method and apparatus allow for extremely low NOx emissions and high efficiency, resulting in an environmentally friendly and at the same time cost effective process.
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