Combustion Chars C07 | Petrographic Atlas | SIU

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Crelling's Petrographic Atlas of Coals and Carbons

College of Science

C07

c07

Frame ID: C07

Sample ID: Coal Combustion Char

Magnification: As given

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter: None

Important Features: Mesosphere

High Res image (300 dpi)

Description: : The object in the center of the field is a typical mesosphere. It is characterized by its spheroidal shape, honeycomb center, and thick walls. This 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.