METHOD OF OPERATING A GASIFIER
    1.
    发明申请
    METHOD OF OPERATING A GASIFIER 审中-公开
    运行燃气的方法

    公开(公告)号:US20140059930A1

    公开(公告)日:2014-03-06

    申请号:US14056528

    申请日:2013-10-17

    Abstract: A coal gasifier is retrofitted to achieve multiple advantages such as reduced oxygen consumption, reduced CO2 and NOx emissions, better H:C ratio, better carbon conversion etc. This is achieved by dividing the coal into at least two zones and modifying the gasifier and operating it as described. The coal is injected into a first zone, configured to devolatilize a substantial portion of the injected coal to produce coal char and volatiles. The operation is tuned to substantially consume the oxidant injected in the first zone. A low-calorific-value, high oxidant feedstock is injected in second zone of the gasifier. The devolatilization of the low-calorific-value, high oxidant content feedstock provides the oxygen containing compounds which gasify at least a portion of the coal char generated in the first zone.

    Abstract translation: 改造煤气化炉可实现多种优点,例如减少氧气消耗,减少二氧化碳和NOx排放,更好的H:C比,更好的碳转化等。这是通过将煤分为至少两个区域和修改气化器和运行 如所述。 煤被注入第一区域,其被配置为使大部分注入的煤脱挥发生以产生煤炭和挥发物。 该操作被调整以基本上消耗在第一区域中注入的氧化剂。 将低热值的高氧化剂原料注入气化器的第二区。 低热值高氧化剂含量原料的脱挥发分提供了含氧化合物,其使在第一区域中产生的煤焦炭的至少一部分气化。

    Method of reducing oxygen requirement of a coal gasifier
    3.
    发明授权
    Method of reducing oxygen requirement of a coal gasifier 有权
    减少煤气化炉氧气需求的方法

    公开(公告)号:US09365784B2

    公开(公告)日:2016-06-14

    申请号:US14056528

    申请日:2013-10-17

    Abstract: A coal gasifier is retrofitted to achieve multiple advantages such as reduced oxygen consumption, reduced CO2 and NOx emissions, better H:C ratio, better carbon conversion etc. This is achieved by dividing the coal into at least two zones and modifying the gasifier and operating it as described. The coal is injected into a first zone, configured to devolatilize a substantial portion of the injected coal to produce coal char and volatiles. The operation is tuned to substantially consume the oxidant injected in the first zone. A low-calorific-value, high oxidant feedstock is injected in second zone of the gasifier. The devolatilization of the low-calorific-value, high oxidant content feedstock provides the oxygen containing compounds which gasify at least a portion of the coal char generated in the first zone.

    Abstract translation: 改造煤气化炉可实现多种优点,例如减少氧气消耗,减少二氧化碳和NOx排放,更好的H:C比,更好的碳转化等。这是通过将煤分为至少两个区域和修改气化器和运行 如所述。 煤被注入第一区域,其被配置为使大部分注入的煤脱挥发生以产生煤炭和挥发物。 该操作被调整以基本上消耗在第一区域中注入的氧化剂。 将低热值的高氧化剂原料注入气化器的第二区。 低热值高氧化剂含量原料的脱挥发分提供了含氧化合物,其使在第一区域中产生的煤焦炭的至少一部分气化。

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