Abstract
It is generally accepted that CO2 capture and storage technologies (CCS) will play an essential role in the reduction of greenhouse gases emission in a medium-large term. Despite the research efforts devoted to the development of more efficient capture processes, two of the main challenges of CCS are the efficiency penalty caused by the CO2 separation, compression and conditioning, and the economic cost. Consequently, the minimizations of the energy requirements and/or the CO2 avoided cost are the research priorities for the future implementation of CCS technology.
The objective of this chapter is to describe some examples of minimizing the CO2 avoided cost in several applications of CCS. The first example illustrates a preliminary analysis for the selection of the appropriate option to overcome the energy requirement for regeneration in an amine scrubbing CCS application. The second case presents a problem for minimizing CCS cost depending on several operational variables in an emerging and promising option for CO2 capture. The last example shows a formal optimization problem with a different objective function, minimizing the cost penalties associated to CO2 compression. It is concluded that optimization will provided essential information to select the adequate process layout and the proper operational variables supported by the concepts of the Second Law Analysis of Thermodynamics.
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- CAPEX:
-
Capital costs
- CB:
-
Carbonator
- CCS:
-
Carbon capture and storage
- CFB:
-
Circulating fluidized bed
- Ci:
-
Cost indexes
- CL:
-
Calciner
- COE:
-
Cost of electricity
- CO2kWh−1 :
-
Specific CO2 emissions
- EC:
-
Energy cost
- EP:
-
Electricity production
- ERi :
-
Energy requirements
- F:
-
Annuity factor
- GT:
-
Gas turbine
- HRSG:
-
Heat recovery steam generator
- IPCC:
-
Intergovernmental Panel on Climate Change
- K:
-
Sorbent deactivation constant
- MEA:
-
Monoetalonamine
- N:
-
Number of sorbent cycles
- NG:
-
Natural gas
- OF:
-
Objective function
- OPEX:
-
Operation and maintenance costs
- XN :
-
Average sorbent activity
- Xr :
-
Residual sorbent activity
- Capture:
-
Capture system process (with the power plant)
- Max:
-
Maximum value
- Ref:
-
Reference case (usually power plant without capture system)
- sb:
-
Steam bleeding
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Romeo, L.M. (2012). CO2 Capture: Integration and Overall System Optimization in Power Applications. In: Zheng, Q., Rebennack, S., Pardalos, P., Pereira, M., Iliadis, N. (eds) Handbook of CO₂ in Power Systems. Energy Systems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27431-2_15
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DOI: https://doi.org/10.1007/978-3-642-27431-2_15
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