660MW机组四角切圆锅炉减少烟温偏差试验研究

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针对某电厂660 MW四角切圆燃煤锅炉左右两侧烟温偏差过大以及烟温偏差引起的过热器两侧吸热量偏差较大的问题,在实炉上进行了现场试验,研究单层分离燃尽风(SOFA)两侧角风门开度偏置和多层SOFA两侧角风门开度偏置对过热器两侧吸热量偏差和炉膛出口两侧烟温偏差的影响.结果 表明:单独调整E层、D层和C层单层的SOFA两侧角风门开度偏置时,过热器两侧吸热量偏差变化很小,各层炉膛出口两侧烟温偏差的变化规律不一致;同时调整上三层SOFA两侧角风门开度偏置时,过热器两侧吸热量朝着A侧增大、B侧减小的方向变化,炉膛出口两侧烟温偏差随着SOFA两侧角风门开度偏置的增大而增大.
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