CAJ | 학술논문

以燃煤锅炉产生的含尘热烟气为对象,采用电称低压冲击器（electrical low pressure impactor,ELPI）和Vaisala-HMT337型温湿度变送器等测试仪器,研究倾斜对喷流与蒸汽相变相结合的方法对燃煤细颗粒的脱除性能,实验考查烟气对喷流速、烟气对喷间距、蒸汽添加量、除雾器类型、添加润湿剂等对细颗粒脱除效率的影响规律。研究结果表明：采用对喷流和蒸汽相变技术相结合的方法可以高效脱除细颗粒物;细颗粒脱除效率随烟气对喷间距的增大先提高后降低,随烟气流速和蒸汽添加量的增大而提高;相变室出口安装丝网除雾器的脱除效果优于采用板波纹除雾器;烟气中添加挥发性乙二醇润湿剂对细颗粒脱除有一定的促进效果。
이연매과로산생적함진열연기위대상,채용전칭저압충격기（electrical low pressure impactor,ELPI）화Vaisala-HMT337형온습도변송기등측시의기,연구경사대분류여증기상변상결합적방법대연매세과립적탈제성능,실험고사연기대분류속、연기대분간거、증기첨가량、제무기류형、첨가윤습제등대세과립탈제효솔적영향규률。연구결과표명：채용대분류화증기상변기술상결합적방법가이고효탈제세과립물;세과립탈제효솔수연기대분간거적증대선제고후강저,수연기류속화증기첨가량적증대이제고;상변실출구안장사망제무기적탈제효과우우채용판파문제무기;연기중첨가휘발성을이순윤습제대세과립탈제유일정적촉진효과。
The removal of fine particles from coal combustion was investigated experimentally based on impinging streams and heterogeneous condensation,with electrical low pressure impactor and Vaisala-HMT337 type temperature and humidity sensor.The influence of the operating parameters on fine particles removal efficiency was analyzed.The experimental results show that increased addition amount of steam and velocity of flue gas brings higher removal efficiency.An increase in horizontal gap between the opposing impinging causes an increased collect efficiency firstly,but then decreased.The mesh demister mounted at the top of the heterogeneous condensational growth chamber has better performance in removal particles than corrugated plate demister.Removal efficiency can be effectively promoted by adding volatile wetting agent glycol to flue gas,but not distinct by adding isooctyl alcohol or ethylenediamine.Fine particles can be removed effectively by adopting the combined impinging streams and heterogeneous condensation technology.