论文部分内容阅读
安徽安庆皖江发电有限公司300MW机组锅炉在燃烧过程中,二次风挡板的调节起重要作用。二次风挡 板包括周界风挡板、二次风挡板、顶部燃尽风挡板和油枪层风门挡板。运行时二次风挡板的调整可使燃烧器保持适当 的一、二次风配比与一、二次风出口速度和风量,使风粉混合均匀,燃烧工况良好,保证燃料正常着火与燃烧。煤质发 生变化的二次风挡板在高负荷时应采用均等配风;低负荷时采用倒宝塔配风。可采用细微调整部分二次风挡板来调 节汽温、排烟温度。各二次风门可通过改变各自的偏置值来进行调整。
Anhui Anqing Wanjiang Power Generation Co., Ltd. 300MW unit boiler in the combustion process, the regulation of the secondary air damper plays an important role. The secondary air damper includes a peripheral air damper, a secondary air damper, a top-burned air damper and an oil-gun damper. The adjustment of the secondary air baffle during operation can maintain the proper primary and secondary air ratio and the primary and secondary air outlet speed and air volume so that the air powder mixes well and the combustion condition is good to ensure the fuel is normally ignited combustion. Secondary air baffles that change in coal quality should be equipped with an equal air distribution at high loads; inverted pagoda air distribution at low loads. Can be finely adjusted part of the secondary air damper to regulate the temperature of steam, exhaust temperature. Each secondary damper can be adjusted by changing its offset value.