加福煤粉燃烧过程的微观形态观察  

Microscopic state Observations of Jiafu Pulverized Coal Combustion Process

作　　者：顾中铸[1] 张永廉[1] 蔡崧[1] 

机构地区：[1]东南大学热能工程研究所

出　　处：《热能动力工程》2000年第1期20-22,共3页Journal of Engineering for Thermal Energy and Power

摘　　要：应用光学显微镜和扫描电子显微镜对加福煤粉燃烧过程中微观形态的变化规律进行了详细的观察。研究结果表明，加福煤粉燃烧过程中出现白球、棕色球、黑球、黑块Ⅰ、黑块Ⅱ这五种形态各异的颗粒，热力工况对其燃尽过程有影响，降低飞灰含碳量关键在于设法将黑块Ⅰ完全燃烧，使黑块Ⅱ尽可能地着火燃烧。With the help of an optical microscope and a scanning electronic microscope conducted are the detailed observations of the microscopic state change relationship of a Jiafu pulverized coal combustion process. The results of the investigation indicate that there appear in the Jiafu pulverized coal combustion process five different types of particles, i.e., white, brown and black balls, black lump I and black lump II. The burn off process is influenced by thermodynamic operating conditions. The key factor in reducing the carbon content of fly ash consists in an attempt to achieve a complete burning of the black lump I and an maximum ignition of the black lump II.

关 键 词：煤粉 燃烧 光学显微镜 扫描电子显微镜 飞灰 

分 类 号：TQ534[化学工程—煤化学工程]