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

Capture (2-Stage Cascade)

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Capture parameters for the membrane system are entered on the Capture parameter screen. Its content depends on the System Configuration chosen on the Config screen. This page describes the 2-Stage Cascade configuration. (The other options are 2-Step w/ Air Sweep andNETL 2-Step w/ Sweep.)

The following parameters are shown:

•Membrane Operation Temperature: This is the operation temperature of the membrane system.

•Ideal CO2 Permeance (S.T.P.): This is the ideal CO2 permeance of the membranes.

•Ideal CO2/N2 Selectivity (S.T.P.): This is the ideal CO2/N2 selectivity of the membranes.

•Percent of Ideal CO2 Permeance: This is the percent of ideal CO2 permeance that is actually achieved.

•Percent of Ideal CO2/N2 Selectivity: This is the percent of ideal CO2/N2 selectivity that is actually achieved.

•Permeate-side Pressure: This is the permeate-side pressure in the membrane module.

•Pressure Ratio at Stages 1 and 2: This is the feed vs. permeate side pressure ratio across the membrane. It is shown for reference only.

•Feed-Side Pressure: This is the feed-side pressure in the membrane module. It is shown for reference only.

•Stage Cut at 1st Stage: This is the fraction of feed gas that permeates the first membrane. This value is shown for reference only.

•Stage Cut at 2nd Stage: This is the fraction of feed gas that permeates the second membrane. This value is shown for reference only.

•Feed-side Compressor Efficiency: This is the efficiency of the feed-side compressor.

•Vacuum Pump Efficiency: This is the efficiency of the permeate-side vacuum pump.

•Expander Efficiency: This is the efficiency of the expander.

•Capture System Cooling Duty: This is the total amount of cooling water normalized by CO2 product.