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1. 发明授权

US4388062A Multi-stage process for combusting fuels containing fixed-nitrogen species 失效
标题翻译：用于燃烧含有固定氮物质的燃料的多阶段过程
公开(公告)号：US4388062A
公开(公告)日：1983-06-14
申请号：US218631
申请日：1980-12-22
申请人： William Bartok , Yih H. Song , Vince J. Siminski , John P. Longwell
发明人： William Bartok , Yih H. Song , Vince J. Siminski , John P. Longwell
IPC分类号： F23C6/04 , F23M3/04
CPC分类号： F23C6/04
摘要： Fuels containing fixed-nitrogen chemical species are combusted in a multi-stage process. The process which converts substantially all of the fixed-nitrogen into molecular nitrogen (and thus avoids the formation of significant amounts of nitrogen oxides from the fixed-nitrogen) comprises six steps: (a) mixing the fuel with at least one first oxidizing agent in amounts such that the equivalence ratio of said fuel to said oxidizing agent is at least about 1.4; (b) partially combusting the mixture resulting from step (a) in at least one first stage at a first temperature of about 1750.degree. to about 2150.degree. K., with a residence time of at least 0.03 second to less than 0.2 second; (c) injecting a free radical agent into the partially combusted mixture of said fuel and said first oxidizing agent; (d) reacting the mixture of said free radical agent and said partially combusted mixture of said fuel and said first oxidizing agent for at least about 0.05 second to about 0.2 second; (e) mixing the reaction products resulting from step (d) with at least one second oxidizing agent in an amount such that the equivalence ratio of reaction products to the total amount of oxidizing agents in the mixture will be about 1.0 or less, such mixing taking place under conditions such that the temperature of the mixture will not exceed about 1800.degree. K.; and (f) completely combusting the mixture resulting from step (e) in at least one second stage at a second temperature of less than about 1800.degree. K.
摘要翻译：含有固氮化学物质的燃料在多级过程中燃烧。基本上将所有固定氮转化成分子氮（从而避免从固定氮中形成大量氮氧化物）的方法包括六个步骤：（a）将燃料与至少一种第一氧化剂混合在使得所述燃料与所述氧化剂的当量比为至少约1.4; （b）在约1750°至约2150°K的第一温度的至少一个第一阶段部分燃烧由步骤（a）得到的混合物，停留时间为至少0.03秒至小于0.2秒; （c）将自由基试剂注入所述燃料和所述第一氧化剂的部分燃烧的混合物中; （d）使所述自由基和所述部分燃烧的所述燃料和所述第一氧化剂的混合物的混合物反应至少约0.05秒至约0.2秒; （e）将由步骤（d）得到的反应产物与至少一种第二氧化剂混合，使得反应产物与混合物中氧化剂总量的当量比为约1.0或更小，这样的混合在混合物的温度不超过约1800℃的条件下进行; 和（f）在小于约1800°K的第二温度下在至少一个第二阶段完全燃烧由步骤（e）得到的混合物。

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