Cost details from Front-End Engineering Design of piperazine with the advanced stripper

37 Pages Posted: 21 Nov 2022

See all articles by Gary Rochelle

Gary Rochelle

University of Texas at Austin

Fred Closmann

University of Texas at Austin - McKetta Department of Chemical Engineering

Miguel Abreu

University of Texas at Austin

Athreya Suresh Babu

The University of Texas at Austin - Texas Carbon Management Program

Benjamin Drewry

University of Texas at Austin - McKetta Department of Chemical Engineering; University of Texas at Austin

Tianyu Gao

University of Texas at Austin

william a. Steen

AECOM

Karen farmer

AECOM

scott r. Bryan

AECOM

max bernau

AECOM

Andrew Sexton

Trimeric Corporation

Katherine Dombrowski

Trimeric Corporation

rosalind jones

Trimeric Corporation

michael marsh

Trimeric Corporation

Brad Piggott

Trimeric Corporation

duane myers

Trimeric Corporation

Date Written: August 29, 2022

Abstract

This Front-End Engineering Design (FEED) was funded by the U.S. Department of Energy (DOE) to estimate the cost to capture and compress 90% of the CO2 from an existing natural gas combined cycle (NGCC) in Denver City, Texas, USA. The FEED used the PZAS (Piperazine with the Advanced Stripper) 2G amine scrubbing technology developed and modelled by The University of Texas at Austin. This FEED is unique in providing more public cost details than other FEEDs funded by DOE. The primary objective of the FEED was to provide a comprehensive estimate for the total installed cost of the capture plant. The estimated capital cost of NGCC at the Mustang Station is $727 million for a capacity of 460 MW and 1.6 million tonnes CO2/yr. This includes a contingency of $104.6 million and a contractor’s profit of $60.1 million. The total direct field cost is $384.1 million. With an optimistic fuel value or $3/MMBtu, the estimated cost of capture varies from $85/t at 4% IRR/85% load to $170/t at 10% IRR/52% load. Air cooling is technically feasible but expensive. The air cooling systems for the water wash and pump-around intercooling account for 23.4% of the direct cost. The gas-fired boilers represent only 4% of the direct costs, but steam extraction would reduce energy cost, free up cooling water, and reduce the direct costs of processing additional flue gas and CO2 from the boilers. The absorbers represent 9.6% of the direct cost in this FEED with no direct contact cooler and only 7.6 m of packing. The solvent cross exchangers are less expensive than expected (2.5% of direct costs). Doubling the number of these exchangers could reduce the heat duty from 3.0 to 2.5 GJ/t CO2.

Keywords: Piperazine, CO2 capture, FEED, amine scrubbing

JEL Classification: Q54

Suggested Citation

Rochelle, Gary and Closmann, Fred and Abreu, Miguel and Suresh Babu, Athreya and Drewry, Benjamin and Gao, Tianyu and Steen, william a. and farmer, Karen and Bryan, scott r. and bernau, max and Sexton, Andrew and Dombrowski, Katherine and jones, rosalind and marsh, michael and Piggott, Brad and myers, duane, Cost details from Front-End Engineering Design of piperazine with the advanced stripper (August 29, 2022). Proceedings of the 16th Greenhouse Gas Control Technologies Conference (GHGT-16) 23-24 Oct 2022, Available at SSRN: https://ssrn.com/abstract=4281548

Gary Rochelle (Contact Author)

University of Texas at Austin ( email )

Fred Closmann

University of Texas at Austin - McKetta Department of Chemical Engineering ( email )

2317 Speedway
Austin, TX 78712
United States

Miguel Abreu

University of Texas at Austin ( email )

2317 Speedway
Austin, TX Texas 78712
United States

Athreya Suresh Babu

The University of Texas at Austin - Texas Carbon Management Program ( email )

200 E. Dean Keeton St.
Austin, TX 78712
United States
5125022650 (Phone)

Benjamin Drewry

University of Texas at Austin - McKetta Department of Chemical Engineering ( email )

2317 Speedway
Austin, TX 78712
United States

University of Texas at Austin ( email )

Tianyu Gao

University of Texas at Austin ( email )

Texas
United States

Karen Farmer

AECOM

Max Bernau

AECOM

Andrew Sexton

Trimeric Corporation

Katherine Dombrowski

Trimeric Corporation ( email )

PO BOX 826
Buda, TX 78610
United States

HOME PAGE: http://trimeric.com/

Rosalind Jones

Trimeric Corporation

Michael Marsh

Trimeric Corporation

Brad Piggott

Trimeric Corporation

PO BOX 826
Buda, TX 78610
United States

Duane Myers

Trimeric Corporation

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