WANGYun-yun,LI Meng-qiong,LINLi-feng.Study on Incineration Control Technology of Sludge Bubbling Fluidized Bed Incinerator[J].China Water & Wastewater,2022,38(18):42-46.
鼓泡流化床污泥焚烧炉焚烧控制技术研究
- Title:
- Study on Incineration Control Technology of Sludge Bubbling Fluidized Bed Incinerator
- 摘要:
- 与其他处理工艺相比，污泥焚烧处理速度快、处理量大，兼具减量化、稳定化、无害化和资源化等特点而受到越来越多的关注。污泥焚烧受热值、处理量、入炉含水率、一次风、二次风、循环风、燃烧器和喷水减温等因素的影响，良好的焚烧工况对焚烧炉长期稳定高效运行至关重要。以上海白龙港污泥二期鼓泡流化床污泥焚烧炉为对象，研究上述因素对鼓泡流化床污泥焚烧炉焚烧工况的影响。结果表明，污泥热值越高、处理量越大、入炉含水率越低，则焚烧越剧烈、温度越高，需采取有效措施防止焚烧炉超温。一次风和二次风通过过剩空气系数匹配入炉污泥量，可调节砂床温度；循环风通过风量调节控制焚烧炉温度；喷水减温对焚烧炉温度的控制取决于喷水量，不设置喷水装置的焚烧炉，因喷水量小，不作为焚烧炉污泥燃烧炉温控制措施。
- Abstract:
- With the advantage of fast treatment speed, large capacity, reduction, stabilization, harmless and resource utilization, sludge incineration has attracted more and more attention compared with other treatment processes. Sludge incineration is a complex process affected by many factors such as sludge calorific value, sludge treatment amount, water content of sludge, primary air, secondary air, recirculating air, burner and water spray temperature reduction, etc. Good incineration condition is crucial for the long-term, stable and efficient operation of the incinerator. Bailonggang sludge disposal phase Ⅱ project was taken as the research subject in this paper, and the effects of the above factors on the incineration conditions of bubbling fluidized bed sludge incinerator were studied. The results showed that the incinerator temperature would be higher under higher sludge calorific value, larger treatment amount and lower sludge water content. Effective measures were needed to prevent the incinerator from being over-temperature. The sand bed temperature was adjusted by matching the primary and secondary air and the sludge quantity through the excess air coefficient. The incinerator temperature was controlled by recirculating airflow. The temperature control of the incinerator by water spray depends on the amount of water sprayed，and pray water was not used to control the temperature of the incinerator without water spraying device for the small amount of water spraying.
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