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Temporary CO2 capture shut down: Implications on low pressure steam turbine design and efficiency

Thern, Marcus LU ; Jordal, Kristin LU and Genrup, Magnus LU (2014) 7th Trondheim Conference on CO2 Capture, Transport and Storage (TCCS) In 7th Trondheim Conference on Co2 Capture, Transport and Storage (2013) 51. p.14-23
Abstract
The Natural gas Combined Cycle (NGCC) with post combustion capture using liquid solvents may in some cases be of interest to design with a flexible steam bottoming cycle, so that it can operate both with and without CO2 capture. It is then important that the choice of the low pressure (LP) steam turbine exhaust size is made accordingly. The paper describes why a flexible NGCC requires a LP steam turbine with smaller exhaust than the corresponding NGCC without CO2 capture, and how this will affect the LP turbine exhaust loss and NGCC process efficiency. Handling large variations in LP steam flow is in fact wellknown technology in combined heat and power (CHP) plants, and the use of 3D simulation tools can further help making the best LP... (More)
The Natural gas Combined Cycle (NGCC) with post combustion capture using liquid solvents may in some cases be of interest to design with a flexible steam bottoming cycle, so that it can operate both with and without CO2 capture. It is then important that the choice of the low pressure (LP) steam turbine exhaust size is made accordingly. The paper describes why a flexible NGCC requires a LP steam turbine with smaller exhaust than the corresponding NGCC without CO2 capture, and how this will affect the LP turbine exhaust loss and NGCC process efficiency. Handling large variations in LP steam flow is in fact wellknown technology in combined heat and power (CHP) plants, and the use of 3D simulation tools can further help making the best LP steam turbine design choice. (C) 2013 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/). (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
post-combustion capture, LP steam turbine, exhaust loss, capture, flexibility, turn-up mode
in
7th Trondheim Conference on Co2 Capture, Transport and Storage (2013)
volume
51
pages
14 - 23
publisher
Elsevier
conference name
7th Trondheim Conference on CO2 Capture, Transport and Storage (TCCS)
external identifiers
  • wos:000345414400002
  • scopus:84906959515
ISSN
1876-6102
DOI
10.1016/j.egypro.2014.07.002
language
English
LU publication?
yes
id
d23374d6-b732-4842-84d3-3f0e70e6aeed (old id 4982559)
date added to LUP
2015-01-27 12:10:24
date last changed
2017-06-18 04:20:01
@inproceedings{d23374d6-b732-4842-84d3-3f0e70e6aeed,
  abstract     = {The Natural gas Combined Cycle (NGCC) with post combustion capture using liquid solvents may in some cases be of interest to design with a flexible steam bottoming cycle, so that it can operate both with and without CO2 capture. It is then important that the choice of the low pressure (LP) steam turbine exhaust size is made accordingly. The paper describes why a flexible NGCC requires a LP steam turbine with smaller exhaust than the corresponding NGCC without CO2 capture, and how this will affect the LP turbine exhaust loss and NGCC process efficiency. Handling large variations in LP steam flow is in fact wellknown technology in combined heat and power (CHP) plants, and the use of 3D simulation tools can further help making the best LP steam turbine design choice. (C) 2013 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).},
  author       = {Thern, Marcus and Jordal, Kristin and Genrup, Magnus},
  booktitle    = {7th Trondheim Conference on Co2 Capture, Transport and Storage (2013)},
  issn         = {1876-6102},
  keyword      = {post-combustion capture,LP steam turbine,exhaust loss,capture,flexibility,turn-up mode},
  language     = {eng},
  pages        = {14--23},
  publisher    = {Elsevier},
  title        = {Temporary CO2 capture shut down: Implications on low pressure steam turbine design and efficiency},
  url          = {http://dx.doi.org/10.1016/j.egypro.2014.07.002},
  volume       = {51},
  year         = {2014},
}