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    • 4. 发明授权
    • Second stage gasifier in staged gasification and integrated process
    • 第二阶段气化炉和整合过程
    • US09150800B2
    • 2015-10-06
    • US14102327
    • 2013-12-10
    • Southern Company
    • Guohai LiuPannalal VimalchandWanWang Peng
    • C10K3/02C10J3/48C10J3/72
    • C10J3/482C01B3/30C01B2203/0277C01B2203/04C01B2203/049C10J3/721C10J2300/093C10J2300/0956C10J2300/0976C10J2300/0993C10J2300/1807C10K3/005Y02E20/18Y02P20/125
    • A second stage gasification unit in a staged gasification integrated process flow scheme and operating methods are disclosed to gasify a wide range of low reactivity fuels. The inclusion of second stage gasification unit operating at high temperatures closer to ash fusion temperatures in the bed provides sufficient flexibility in unit configurations, operating conditions and methods to achieve an overall carbon conversion of over 95% for low reactivity materials such as bituminous and anthracite coals, petroleum residues and coke. The second stage gasification unit includes a stationary fluidized bed gasifier operating with a sufficiently turbulent bed of predefined inert bed material with lean char carbon content. The second stage gasifier fluidized bed is operated at relatively high temperatures up to 1400° C. Steam and oxidant mixture can be injected to further increase the freeboard region operating temperature in the range of approximately from 50 to 100° C. above the bed temperature.
    • 公开了分级气化一体化工艺流程图和操作方法中的第二阶段气化单元以气化各种低反应性燃料。 包含第二阶段气化单元在较高温度下工作,接近床层的灰熔融温度,为单体配置,操作条件和方法提供了足够的灵活性,以实现低反应性材料如沥青和无烟煤的总体转化率超过95% ,石油残渣和焦炭。 第二阶段气化单元包括固定的流化床气化器,其操作有具有贫碳含量的预定惰性床材料的充分湍流床。 第二级气化器流化床在高达1400℃的较高温度下操作。可以注入蒸汽和氧化剂混合物,以进一步将干舷区域操作温度提高到高于床温度的约50至100℃的范围内。