FEED for Piperazine with the Advanced Stripperr™ on NGCC at Denver City, Texas

Abstract

The University of Texas at Austin is developing a Front End Engineering Design (FEED) for CO2 capture using Piperazine with the Advanced StripperTM (PZASTM) at Mustang Station in Denver City, Texas. CO2 will be captured from a 460 MW natural gas combined cycle (NGCC). With two parallel process trains, the FEED will capture 90% of the CO2 from 1.56 X 106 kg/s flue gas producing 190 tonnes/hr CO2. The design incorporates advancements including cold and hot cross exchangers, and pump-around intercooling in the bottom of the absorber. The capture system will benefit from the 45Q tax credit and CO2 sales for use in enhanced oil recovery (EOR). The FEED is in progress; this paper reports on the design and preliminary costs estimated after completion of the process design package (PDP) and receipt of budgetary equipment cost estimates for a subset of the major equipment. The total investment for the system is currently estimated to be $415 X 106. The expected marginal profit of the capture system is $48 X 106/yr.