型煤解耦燃烧—成型机理、CFD模拟及污染物减排研究

民用散煤通常用于取暖及居民炊事，燃烧条件差、燃烧效率低且无任何污染控制措施，导致其燃烧污染危害程度比工业燃煤污染危害程度更甚。其污染物的减排主要是通过控制民用散煤质量和提高民用炉具燃烧技术两条途径。本课题将采用散煤型煤化和解耦燃烧相结合的方式达到散煤清洁高效利用的目的。运用实验与模拟相结合的方法，系统研究多种粘结剂的大颗粒型煤的燃烧特性，探索其成型机理及污染物的排放规律。通过计算流体力学（CFD）模拟计算探索大颗粒煤在移动床内燃烧的传热、流动、反应特征，预测燃烧过程的关键点。为燃烧炉的燃煤选择和煤炉设计提供重要参考依据，实现煤炉结构-燃烧方式-洁净型煤优化匹配，达到散煤洁净高效燃烧的目的。

Civilian bulk coal is commonly used for heating and cooking, poor combustion conditions, low combustion efficiency and no pollution control measures, resulting in its combustion pollution much higher than industrial coal-fired pollution. The reduction of pollutants is mainly through the control of the quality of civilian bulk coal and improve the combustion technology. Our project will combine briquette technology and decoupling combustion to achieve the goal of clean and efficient utilization of bulk coal. Using the method of combining experiment and simulation, the combustion characteristics of briquettes with a variety of binders are studied thoroughly, and the briquetting mechanism and the emission law of pollutants are explored. The heat transfer, flow and reaction characteristics of briquette burning in the moving bed are studied by computational fluid dynamics (CFD) simulation, predicting the key points of combustion process. Then achieve the matching of coal burning stoves, combustion style and clean briquette, and achieve the clean and highly efficient combustion of bulk coal.