Maximizing coal-fired power plant efficiency with integration of amine-based CO2 capture in greenfield and retrofit scenarios

被引：17

作者：

Van Wagener, David H. ^{[1
]}

Liebenthal, Ulrich ^{[2
]}

Plaza, Jorge M. ^{[1
]}

Kather, Alfons ^{[2
]}

Rochelle, Gary T. ^{[1
]}

机构：

[1] Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA

[2] Hamburg Univ Technol, Inst Energy Syst, D-21073 Hamburg, Germany

来源：

ENERGY | 2014年 / 72卷

关键词：

CO2; capture; Integration; Retrofit; Greenfield; CONFIGURATIONS; OPTIMIZATION; TECHNOLOGY; PIPERAZINE; SOLUBILITY; DERIVATION; EVALUATE; IMPACT;

D O I：

10.1016/j.energy.2014.04.117

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A modeling study was performed to investigate the direct impact of amine CO2 scrubbing on the efficiency of a coal-fired power plant. The full scope of the capture process was simulated with 8 m PZ (piperazine) to estimate the steam, electricity, and cooling water requirements. The steam cycle was simulated for applications of the capture technology to both retrofit and greenfield (optimized new build) coal-fired power plants. The reboiler duty of the stripping column had an optimal molar L/G (liquid to gas ratio) of 4.9 in the absorber and the maximum reboiler temperature of 150 degrees C. Integration of this CO2 capture with a greenfield coal plant yielded an identical optimal L/G, but the optimal reboiler temperature was 140 degrees C, and the decrease in power plant efficiency was 73%. The retrofit case resulted in an optimum case with an L/G of 5.9, a reboiler temperature of 120 degrees C, and a decrease in plant efficiency of 7.0%. When running at the optimal L/G, the optimization sensitivity to the reboiler temperature was low. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：824 / 831

页数：8

共 33 条

[31]

Van Wagener D.H., 2011, PhD Thesis

[32] Stripper configurations for CO2 capture by aqueous monoethanolamine [J].

Van Wagener, David H. ;

Rochelle, Gary T. .

CHEMICAL ENGINEERING RESEARCH & DESIGN, 2011, 89 (09) :1639-1646

[33] Total Pressure and CO2 Solubility at High Temperature in Aqueous Amines [J].

Xu, Qing ;

Rochelle, Gary .

10TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, 2011, 4 :117-124

← 1 2 3 4 →