煤烧圆家重点实验宝 Chapter 5 Fluidization §1. Introduction I. History 921.12.16, Fritz Winkle observed the phenomena of fluidization and developed the gasifigator 1939 arren Lewis and edwin gillil and discovered the technique of catalytic cracking with fast fluidization 1960s Douglass elliott began to use fluidized bed to produce steam 1982 Lurgi company set up first CFB 84MW National Lab, of Coal Combustion. HUST Wuhan 430074P R CHINA E-mail:pcbnlcc@hust.edu.cn
NL CC National Lab. of Coal Combustion, HUST Wuhan 430074, P. R. CHINA E-mail: pcbnlcc@hust.edu.cn Chapter 5 Fluidization §1. Introduction 1. History 1921.12.16, Fritz Winkle observed the phenomena of fluidization and developed the gasifigator. 1939. Warren Lewis and Edwin Gillil and discovered the technique of catalytic cracking with fast fluidization. 1960’s Douglass Elliott began to use fluidized bed to produce steam. 1982 Lurgi company set up first CFB 84MW
煤量甏圆家重点实验宝 2. Comparison of Different Kinds of boilers 特性炉排燃烧鼓泡床循环床煤粉炉 床高或燃料 燃烧区高度(m)0.2 1-215-4027-45 截面风速(m/s)1.2 1.5-2.54-8 4-6 过量空气(%)20-30 20-2510-2015-30 截面热负荷 MWm2)0.5-1.5 0.5-1.53-5 National Lab, of Coal Combustion. HUST Wuhan 430074 P R CHINA E-mail:pcbnlcc@hust.edu.cn
NL CC National Lab. of Coal Combustion, HUST Wuhan 430074, P. R. CHINA E-mail: pcbnlcc@hust.edu.cn 2. Comparison of Different Kinds of Boilers 特性 炉排燃烧 鼓泡床 循环床 煤粉炉 床高或燃料 燃烧区高度（m) 0.2 1 - 2 15 - 40 27 - 45 截面风速（m/s) 1.2 1.5 - 2.5 4-8 4 - 6 过量空气（%） 20-30 20-25 10-20 15-30 截面热负荷 （MW/m2 ) 0.5-1.5 0.5-1.5 3-5 4-6
煤烧圆家重点实验宝 特性炉排燃烧鼓泡床循环床煤粉炉 煤的粒度(mm)6-326以下6以下0.1以下 负荷调节比例4:1 燃烧效率(%)85-9090-9695-99 99 No排放(ppm)400-600300-40050-200400-600 炉内脱硫效率 80-9080-90低 National Lab, of Coal Combustion. HUST Wuhan 430074 P R CHINA E-mail:pcbnlcc@hust.edu.cn
NL CC National Lab. of Coal Combustion, HUST Wuhan 430074, P. R. CHINA E-mail: pcbnlcc@hust.edu.cn 特性 炉排燃烧 鼓泡床 循环床 煤粉炉 煤的粒度（mm) 6-32 6以下 6以下 0.1以下 负荷调节比例 4：1 3：1 3-4：1 燃烧效率（%） 85-90 90-96 95-99 99 Nox排放（ppm) 400-600 300-400 50-200 400-600 炉内脱硫效率 （%) 80-90 80-90 低
煤量甏圆家重点实验宝 3. Characteristics of Fluidization Combustion 1)Wide fuel application 2) High efficiency of desulphuration 3)Low NOx emission 4 )Large charge regulation range National Lab, of Coal Combustion. HUST Wuhan 430074 P R CHINA E-mail:pcbnlcc@hust.edu.cn
NL CC National Lab. of Coal Combustion, HUST Wuhan 430074, P. R. CHINA E-mail: pcbnlcc@hust.edu.cn 3. Characteristics of Fluidization Combustion 1) Wide fuel application; 2) High efficiency of desulphuration; 3) Low NOx emission; 4) Large charge regulation range
煤烧圆家重点实验宝 固定床 流 鼓泡 柱塞 流态化 具有气力输 流态化 流态化 的稀相流态 气体 气体 气体 气体 气体 气体 (b) (c) (f) 图2-1气固接触形式 10 National Lab, of Coal Combustion. HUST Wuhan 430074 P R CHINA E-mail:pcbnlcc@hust.edu.cn
NL CC National Lab. of Coal Combustion, HUST Wuhan 430074, P. R. CHINA E-mail: pcbnlcc@hust.edu.cn