赵雪成,何川,马云龙,卜俊峰,孔凡海,许波连,宋玉宝

• 1:西安热工研究院有限公司苏州分公司
• 2:南京大学化学化工学院

摘要(Abstract)：

燃煤机组选择性催化还原（SCR）烟气脱硝系统运行过程中，烟气中的硫酸氢铵（ABS）易造成空气预热器（空预器）冷端灰垢板结，增加了吹扫清灰难度。为此，实验制备ABS预混灰样压片并在不同温度下加热，设计新型检测方法比较样品抗压强度的变化，探索ABS对灰垢机械强度的影响规律。结果显示：1)ABS预混灰样在147～220℃加热板结过程中发生了物理团聚和化学反应，抗压强度最大提高了约95.50%，其中物理团聚起主导作用，影响程度约占88%～89%，化学反应的影响约占10%～12%;2)ABS板结灰样在220～300℃加热下，气化析出率最高达到96.43%，灰样由板结状态转为疏松，抗压强度由空白样品的195.50%降低到110.17%。证明通过高温加热降低堵塞物中ABS含量是可行的，为改进吹扫清灰创造了条件。

关键词(KeyWords)： 空预器堵塞;硫酸氢铵;抗压强度;物理团聚;加热气化

Abstract:

Keywords:

基金项目(Foundation): 苏州市重点产业技术创新项目（SGC2021121）~~

作者(Author): 赵雪成,何川,马云龙,卜俊峰,孔凡海,许波连,宋玉宝

DOI: 10.19666/j.rlfd.202302008

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