the coal gasifier op consists of three zones: pyrolysis zone (cstr model)
DESCRIPTION
Coal Gasification. The Coal Gasifier Op consists of three zones: Pyrolysis zone (CSTR Model) Cracking volatile part of coal Combustion reactions Gasification zone (PFR Model) Char-Gas (H2, CO, CO2, CH4, etc…) Reactions Char-Oxygen Reactions Char-Steam Reaction , Water-Gas Reaction - PowerPoint PPT PresentationTRANSCRIPT
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Generic Sequence Of Gas Manufacture
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• The Coal Gasifier Op consists of three zones:
– Pyrolysis zone (CSTR Model)• Cracking volatile part of coal• Combustion reactions
– Gasification zone (PFR Model)• Char-Gas (H2, CO, CO2, CH4, etc…)
Reactions• Char-Oxygen Reactions• Char-Steam Reaction,• Water-Gas Reaction• Methane-Steam Reaction• Produce raw Syngas,• Coal residue
– Quench zone (Separator Model)• Gas and molten ash quenched in water
bath and• Conduct Gas, Liquid & Solid three phase
separation • Ash/slag discharged at bottom as inert
Coal Gasification
OxygenCoal water slurry
Gasification Zone
Syngas: (main)• CO • H2
• H2O • CO2
Vitrified Slag
Transition Zone Quench
Zone
Quench Water
Black Water
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Gasifier Types
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