公开(公告)号：US20100239989A1

公开(公告)日：2010-09-23

申请号：US12728502

申请日：2010-03-22

申请人： Tomas EKMAN ,  Ola RITZÉN ,  Anders LUGNET ,  Mats GARTZ

发明人： Tomas EKMAN ,  Ola RITZÉN ,  Anders LUGNET ,  Mats GARTZ

IPC分类号： F23L7/00 ,  F23L9/00

CPC分类号： F23L7/007 ,  F23C6/045 ,  F23C9/006 ,  F23C9/08 ,  Y02E20/344 ,  Y02E20/348

摘要： 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.

摘要翻译： 在使用空气作为氧化剂的至少一种常规燃烧器操作工业炉时，均匀化热分布的方法以及减少燃烧产物中的NOx的量。 引起包含至少50％氧气的另外的氧化剂通过喷枪流入炉中。 供应的氧气总量与通过空气燃烧器供应的燃料量平衡。 首先，通过附加氧化剂供应至少40％的供应氧的组合，喷枪布置在与空气燃烧器至少0.3米的距离处，并且附加的氧化剂通过喷枪进入炉中 最小声速，其次，仅当空气燃烧器以一定的最低功率或较高的功率运行时才提供附加的氧化剂。