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2. 发明公开

KR1020040007278A 농축된 석탄 스트림의 ＮＯｘ 감소성 연소 방법 失效
标题翻译：浓缩煤气的NOx还原燃烧方法
公开(公告)号：KR1020040007278A
公开(公告)日：2004-01-24
申请号：KR1020030046288
申请日：2003-07-09
申请人： 프랙스에어 테크놀로지, 인코포레이티드
发明人： 코바야시,히사시 , 부울,로렌스이.3세 , 스나이더,윌리암제이.
IPC分类号： F23D14/24 , F23D14/32
CPC分类号： F23C5/32 , F23C6/045 , F23C6/047 , F23C7/004 , F23C2201/101 , F23C2201/20 , F23C2900/06041 , F23C2900/99004 , F23D1/00 , F23D14/24 , F23D2900/00006 , F23D2900/01001 , F23L7/007 , F23L2900/07006 , F23L2900/07007 , F23N2037/08 , F23N2037/28 , Y02E20/344
摘要： PURPOSE: An NOx(Nitrogen Oxide) reduction combustion method of concentrated coal streams is provided to reduce NOx formation in the combustion of solid hydrocarbonaceous fuel as coal by obtaining the streams having a ratio of fuel solids to air that is higher than the feed stream from the incoming feed stream of the fuel solids and air and injecting the obtained stream and a small amount of oxygen to a burner where the fuel solids are burned. CONSTITUTION: An NOx reduction combustion method comprises steps for supplying a feed stream of pulverulent solid hydrocarbonaceous fuel in a gaseous carrier; obtaining from the feed stream at least one obtained stream comprising the fuel and a carrier to have a ratio of fuel to a carrier that is higher than the ratio of fuel to the carrier of the feed stream; feeding the obtained stream and air from a burner(3) to a combustion chamber(1); injecting oxygen into the obtained stream at or near the burner; and burning the coal in the obtained stream in the combustion chamber with the air and oxygen in a flame(6) that has a fuel-rich flame zone. The amount of the oxygen is less than 25% of the stoichiometric amount required for complete combustion of the fuel and keeps the zone fuel-rich. The combustion method reduces the amount of air fed through the burner by an amount containing sufficient oxygen that the overall combustion zone stoichiometric ratio varies by not more than 10% compared to the stoichiometric ratio without adding oxygen.
摘要翻译：目的：提供浓缩煤流的NOx（氮氧化物）还原燃烧方法，以通过获得燃料固体与空气的比例高于原料流的比例来减少作为煤的固体烃类燃料燃烧中的NOx形成燃料固体和空气的输入进料流，并将获得的流和少量氧气注入到燃烧固体燃烧的燃烧器中。构成：NOx还原燃烧方法包括在气态载体中供应粉状固体烃类燃料的进料流的步骤; 从进料流中获得至少一种所获得的包含燃料和载体的料流以使燃料与载体的比例高于进料流中的燃料与载体的比例; 将获得的流和空气从燃烧器（3）供给到燃烧室（1）; 在燃烧器处或附近将氧气注入所得流中; 并在燃烧室内的所得料流中燃烧煤，其中空气和氧气具有富燃料火焰区域的火焰（6）。氧气的量小于燃料完全燃烧所需的化学计量量的25％，并保持燃料浓度。该燃烧方法通过使含有足够的氧的量减少通过燃烧器供给的空气的量，使总燃烧区化学计量比在不添加氧的情况下与化学计量比相比变化不超过10％。

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