氧化锆在锅炉中的使用1（The use of zirconia in the boiler 1）.docVIP

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氧化锆在锅炉中的使用1（The use of zirconia in the boiler 1）.doc

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氧化锆在锅炉中的使用1（The use of zirconia in the boiler 1）

氧化锆在锅炉中的使用1（The use of zirconia in the boiler 1） Principle and application of oxygen measurement by zirconium oxide analyzer Author: Hou Dianlai: China Guodian Heze thermal power plant Abstract: through the study of zirconium oxide analyzer in Heze power plant the successful application of the case, discussed in detail the working principle of 125MW boiler in the determination of the content of oxygen in flue gas with zirconia oxygen transmitter, structure, and performance of the instrument calibration method, zirconium head installation and replacement, fault diagnosis and elimination. [keyword:] zirconium oxide, calibration 1 Preface According to the #1 unit of air, oxygen consumption increased high load without problems were analyzed, through the inspection found that the blower is open, oxygen is only about 4%, while the blower fan consumption rose 0.45kwh/tq, consumption also increased 0.1-0. 2 kwh/tq at the same time, with a side of the flue exhaust gas temperature decreases, a side B side low exhaust gas temperature is about 21 DEG C, for the judgment of a side of Preheater Leakage, thermal test of air leakage test arrangement, found a side leakage rate is as high as 18%. The leakage of #1 furnace preheater is serious, which seriously affects the unit consumption of air supply and not on high load oxygen. The opportunity of stopping furnace is checked and the internal leakage point of #1 preheater is eliminated. The #1 furnace stopping during standby, the preheater pipe is blocked, August 24, 2004 after the start of observation, the same load, with oxygen, air consumption rate decreased by 0.029 percentage points, the wind power consumption rate decreased by 0.009 percentage points, feeding and wind power consumption rate decreased by 0.038 percentage points in total. The 125MW unit of the Heze power plant adopts the oxygen signal correction air flow command as shown in figure 1. The air command sent to the air control system to control a fan coupler scoop tu