IECM 12.0 beta User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > SET PARAMETERS > CO2 Capture, Transport & Storage > 1. Solid Sorbents TSA >

Config - Bypass

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Configuration parameters related to bypass in the solid sorbents TSA system are found on the Config - Bypass parameter screen. The following parameters are shown:

•Flue Gas Bypass Control: This popup selection menu controls whether or not a portion of the inlet flue gas may bypass the scrubber and recombine with the treated flue gas. Bypass allows the scrubber to operate at full efficiency while allowing some of the flue gas to go untreated. Two choices are available:

•No Bypass: This is t he default. All of the flue gas will pass through the scrubber.

•Bypass: This option allows for the possibility of a portion of the flue gas to bypass the scrubber.

The following parameters are only shown if Bypass is selected. They control the amount of bypass:

•Maximum CO2 Removal Efficiency: This parameter specifies the maximum efficiency possible for the adsorber on an annual average basis. The value is used as a limit in calculating the actual CO2 removal efficiency for compliance.

•Overall CO2 Removal Efficiency: This value is the CO2 removal efficiency required for the entire power plant to meet the CO2 emission constraint set earlier. It is used to determine the actual flue gas bypass above.

•Adsorber CO2 Removal Efficiency: This is the actual removal efficiency of the adsorber alone. It is a function of the CO2 emission constraint and the actual flue gas bypass.

•Minimum Bypass: This specifies the trigger point for allowing flue gas to bypass the scrubber. No bypass is allowed until the allowable amount reaches the minimum level set by this parameter.

•Allowable Bypass: This is the amount of flue gas that is allowed to bypass the scrubber, based on the actual and maximum performance of the CO2 removal. It is provided for reference only. The model determines the bypass that produces the maximum CO2 removal and compares this potential bypass with the minimum bypass value specified above. Bypass is only allowed when the potential bypass value exceeds the minimum bypass value.

•Actual Bypass: This is the actual bypass being used in the model. It is based on all of the above and is provided for reference purposes only.