Analysis of Reasons for Large Negative Pressure Fluctuations in the Furnace of 660?MW Thermal Power Units and Improvement Measures
The problems of large fluctuation of furnace negative pressure and unstable combustion occurred during boiler operation.The analysis of the actual operation of the furnace shows that the root of the anti-blocking device is seriously blocked,the coking of gray and black cinder is serious,the large block of compaction,the humidity is high,the viscosity is high,and the whole sampling channel is blocked in serious cases,resulting in inaccurate measurement points.By solving the root blockage problem of the anti-blocking device,the coal ash accumulation can be avoided without human intervention,and the measurement is accurate and the online pressure value of the measurement point can be truly reflected.
furnace negative pressureanti blocking sampling deviceblockageautomatic compensation blowing and sweeping
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