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目前,在火电厂进行除尘器效率测试中,由于除尘器入口测试位置不理想、烟道测量断面气流扰动过大或操作不当等原因,可能造成飞灰取样有较大的误差,即测出的飞灰浓度(或由测试结果计算出的飞灰总量)过大或偏小,使除尘器效率测试值的准确性变差。本文提出采用灰平衡法在现场或预先估算除尘器入口飞灰浓度(或飞灰总量),与测试所得的飞灰浓度(或飞灰总量)进行比较,以判断和了解飞灰取样的准
At present, in the power plant dust collector efficiency test, due to the dust collector inlet test location is not ideal, the flue gas flow section of the measurement section is too large or improper operation and other reasons, may result in larger errors in the sampling of fly ash, that measured The fly ash concentration (or the total amount of fly ash calculated from the test results) is too large or too small, deteriorating the accuracy of the duster efficiency test. In this paper, the gray balance method is used to estimate the fly ash concentration (or the total amount of fly ash) at the inlet of the precipitator at the site or in advance and compare it with the measured fly ash concentration (or total fly ash) to determine and understand the quasi-