运用连续飞灰含碳量监测系统优化锅炉燃烧

Optimization of Boiler Burning with the Continuous Monitoring System of Flying-ash Carbon Content

烧低质无烟煤 (Vdaf<10 % )锅炉机械不完全燃烧热损失 (q4)居高不下 ,是由于灰中含有未燃尽碳造成的。传统飞灰残碳 (Cfh)试验室法测定 ,弊端是得出结果时间滞后达 4～ 6小时之长。俄罗斯在 30 0MW烧无烟煤Tпп - 2 10A型炉上运用连续飞灰含碳量监测系统 ,引进丹麦生产的“RCA - 2 0 0 0”型分析仪 ,利用红外线光谱区光吸收原理即时、便捷、优质地测出Cfh,从而可感知炉内燃烧工况并做出相应调整 ,使工况优化 ,取得Cfh降低 4 0 % ,q4减少 2 %成效 ;策划耗最少天然气扶持煤粉火炬稳燃 ,节约了大量气体燃料。

Heat loss(q\-4) shall always be serious in incomplete burning of boiler with low quality anthracite (V daf <10%)owing to unburnt carbon within the ash. A method of test laboratory of traditional flying ash residual carbon has been adopted for monitoring, the result of which shall be 4～6 hours delayed. The continuous monitoring system of flying-ash carbon content was applied to Russian 300 MW Тпп-210A boiler with anthracite. RCA-2000 analyzer, imported from Denmark, was used to monitor C fh immediately, conveniently and excellently making use of priciple of the light absorption in the spectral regions of infrared ray, so as to understand the woorking condition of burning within the boiler and make a corresponding adjustment to optimize the working condition, which has reduced 40% of C fh and decreased 2% of q\-4. Meanwhile, the torch of pulverized coal was stably burnt with minimum natural gas, which has economized on large quantity of gas fuel.