Combustion Chars C26 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science



Frame ID: C26

Sample ID: Coal Combustion Char

Magnification: As given

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter: None

Important Features: Maceral Char Series

High Res image (300 dpi)

Description: : This frame shows a typical char type distribution in the high volatile bituminous Herrin No. 6 coal. This sample is the same one as that in C25. The char was produced in an entrained flow reactor in nitrogen with a heating rate of 104-105 degrees C per second with a residence time of approximately one second at a maximum temperature of 1000 degrees C.