IECM 12.0 beta User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > SET PARAMETERS > CO2 Capture, Transport & Storage > 2. FG Recycle & Purification >

Purification (NETL Case 5A)

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Parameters related to the flue gas purification unit are entered on the Purification parameter screen. The contents of this screen vary depending on which configuration was chosen on the Config screen. This screen looks similar for all configurations except NETL Case 5A. See Purification for a description of the screen in the other configurations. For the NETL Case 5A configuration, the following parameters are available:

•CO2 Recovery Rate: Unlike the other configurations, the value you specify here will be assumed to be in range and will be used without further checking.

•CO2 Product Purity: This is the percentage of the product that is carbon dioxide. Unlike the other configurations, the value you specify here will be assumed to be in range and will be used without further checking.

•CO2 Product Pressure: The CO2 product may have to be carried over long distances. Hence it is necessary to compress (and liquefy) it to very high pressures, so that it may be delivered to the required destination in liquid form and (as far as possible) without recompression facilities en route. The critical pressure for CO2 is about 1070 psig. The typically reported value of final pressure to which the product CO2 stream has to be pressurized using compressors, before it is transported is about 2000 psig.

•Unit CPU Energy: This is the electrical energy required to purify a unit mass of CO2.

•CPU Energy: This is the total energy required to purify the CO2 product.

•Cooling Duty for CO2 Compr.: This is the cooling duty for the CO2 compressor.

•Overall CPU Cooling Duty: This is the overall cooling duty for the cryogenic purification system.

•Unit CPU Cost: This is the cost, in 2007 US Dollars, of purifying a unit mass of CO2 product.