Performance

 

Inputs for the performance of the Shell gasifier are entered on the Performance parameter screen. The following parameters are displayed:

•Gasifier Area:

•Gasifier Temperature: This is the temperature of the syngas exiting the Shell Entrained-Flow Reactor. You may choose from the following options:

•2500°F

•2600°F (this is the default)

•2700°F

•Gasifier Pressure: This is the pressure of the syngas exiting the Shell Entrained-Flow Reactor. This value is provided for reference only.

•Moisture in Dried Coal: This is the percentage of moisture in the coal exiting the coal dryer. This value is provided for reference only.

•Total Water or Steam Input: This is the ratio of water to carbon in the coal slurry.

•Oxygen Input from ASU: The Shell gasifier requires a constant value for the oxygen (O2) in the oxidant to carbon (C) in coal ratio. This value is provided for reference only.

•Total Carbon Loss: This the percent of carbon in the fuel that is lost in the slag. You may choose from the following options:

•0.5 (this is the default)

•1.0

•1.5

•Sulfur Loss to Solids: This is the percent of the sulfur in coal that is lost in the slag.

•Coal Ash in Raw Syngas: This is the percent of ash in the coal that is in the syngas.

•Percent Water in Slag Sluice: This is the percent of the slag sluice that is water.

•Number of Operating Trains: This is the total number of operating trains. It is used primarily to calculate capital costs. The value must be an integer.

•Number of Spare Trains: Thisis the total number of spare trains. It is used primarily to calculate capital costs.

•Raw Gas Cleanup Area:

•Particulate Removal Efficiency: This is the percentage of the ash which is removed by the raw gas cleanup process.

•Power Requirement: This is the equivalent electrical output of thermal (steam) energy used for reheat, plus the actual electrical output power required.

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