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    • 6. 发明申请
    • METHOD AND APPARATUS FOR COMBUSTING A CARBONACEOUS MATERIAL
    • 用于燃烧碳质材料的方法和装置
    • WO1993018341A1
    • 1993-09-16
    • PCT/NL1992000043
    • 1992-03-05
    • TECHNISCHE UNIVERSITEIT DELFTWOJTOWICZ, Marek, AndrzejMOULIJN, Jacob, Adriaan
    • TECHNISCHE UNIVERSITEIT DELFT
    • F23C11/02
    • F23C10/10F23C6/04F23C10/005F23C2206/101F23G2201/40F23G2202/101F23G2202/103F23G2203/501F23G2203/503F23J7/00F23J2215/101Y02E20/344
    • A method and an apparatus are described for combusting carbonaceous materials in a two-stage process. In a first reaction chamber (2), operating under fuel-rich conditions in a bubbling fluidisation regime, fuel undergoes primary combustion or gasification. Oxidising gas (5) is fed into the first reaction chamber at a velocity sufficient to maintain fluidisation. Combustion products leave the first chamber and enter a second reaction chamber (3), operating under oxygen-rich conditions as a circulating fluidised-bed combustor. A second stream of oxidising gas (6) is fed to the second chamber, preferably tangentially to generate a turbulent swirl. Particles of a sulphur-capture agent, preferably limestone, are fed to the second chamber, preferably with the second stream of gas. In the second stage, char and combustible gases generated in the first stage are burnt. The fuel-bound sulphur is removed and advantageously converted to calcium sulphate, while the fuel-bound nitrogen is advantageously converted to nitrogen gas.
    • 描述了用于在两阶段工艺中燃烧碳质材料的方法和装置。 在第一反应室(2)中,在气泡流化状态下在富燃料条件下运行,燃料经历一次燃烧或气化。 氧化气体(5)以足以维持流化的速度进料到第一反应室中。 燃烧产物离开第一室并进入第二反应室(3),在富氧条件下作为循环流化床燃烧器运行。 氧化气体(6)的第二流被输送到第二室,优选切向地产生湍流漩涡。 硫捕获剂,优选石灰石的颗粒,最好用第二气体流进料至第二室。 在第二阶段,第一阶段产生的焦炭和可燃气体燃烧。 燃料结合的硫被去除并有利地转化为硫酸钙,而燃料结合的氮有利地转化为氮气。