Lecture 5 - Mechanical Engineering
Lecture 5 - Mechanical Engineering
Lecture 5 - Mechanical Engineering
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Time scales and temperatures for<br />
pulverized fuel<br />
• Input fuel particles of 10-100 m<br />
• Preheating: 200 – 300 o C, < 1 ms<br />
• Pyrolysis: 300 – 1000 o C, 1-10 ms<br />
• Combustion of volatile matter: 1200 – 1500 o C, 5 -<br />
50 ms<br />
• Char burnout: 1500 – 2000 o C, 50 - 5000 ms<br />
• Particles fall apart<br />
• Resulting fly ash, 0.1 – 50 m, coagulation,<br />
sintering<br />
/ <strong>Mechanical</strong> <strong>Engineering</strong> 29-11-2012 5
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