介绍谏墨发电厂7号炉改造后的运行实绩和性能试验结果。7号炉改造前为UP型煤油两用直流锅炉，带300MW基本负荷，已经运行了17年。为了适应调峰运行的要求，提高出力，降低煤耗和电耗，将其改造为配320MW机组的控制循环锅炉。从停炉改造到重新商业运行仅约7个月。运行实绩和性能试验结果证明改造是成功的，锅炉效率提高约2％；断油最低稳燃负荷达112MW；锅炉漏灰漏烟明显减少；实现低氧燃烧，过量空气系数1．16；燃烧不完全损失为1％。已经安全可靠运行4个多月，取得明显的社会效益和经济效益。 Describes the operation results and performance test results after the renovation of No.7 furnace in Jian-mei Power Plant. Before the transformation of No.7 furnace for the UP kerosene dual-purpose DC boilers, with 300MW basic load, has been running for 17 years. In order to meet the requirements of peak regulation operation, increase output, reduce coal consumption and electricity consumption, and transform it into a control circulating boiler equipped with 320MW units. From shutdown to re-commercial operation only about 7 months. The results of operation and performance test proved that the reform was successful, the boiler efficiency increased by about 2%, the minimum steady-state combustion load of oil cut-off reached 112MW, the leakage of boiler dust was significantly reduced, and the excess air coefficient was 1.16 for low-oxygen combustion. The total loss is 1%. Has been safe and reliable operation for more than 4 months, made significant social and economic benefits.