Techno-economic assessment of alternative fuels in second-generation carbon capture and storage processes

2019 ◽  
Vol 25 (2) ◽  
pp. 149-164 ◽  
Author(s):  
Martin Haaf ◽  
Peter Ohlemüller ◽  
Jochen Ströhle ◽  
Bernd Epple
Keyword(s):  
Carbon Capture ◽  
Alternative Fuels ◽  
Second Generation ◽  
Carbon Capture And Storage ◽  
Economic Assessment ◽  
And Storage ◽  
Storage Processes

scholarly journals Economic Conditions for Developing Hydrogen Production Based on Coal Gasification with Carbon Capture and Storage in Poland

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5074
Author(s):  
Radosław Kaplan ◽  
Michał Kopacz
Keyword(s):  
Carbon Capture ◽  
Coal Gasification ◽  
Net Present Value ◽  
Carbon Capture And Storage ◽  
Economic Assessment ◽  
Free Cash Flow ◽  
Sensitivity Analyses ◽  
Capital Expenditures ◽  
Hard Coal ◽  
And Storage

This study documents the results of economic assessment concerning four variants of coal gasification to hydrogen in a shell reactor. That assessment has been made using discounting methods (NPV: net present value, IRR: internal rate of return), as well as indicators based on a free cash flow to firm (FCFF) approach. Additionally, sensitivity analysis has been carried out, along with scenario analysis in current market conditions concerning prices of hard coal, lignite, hydrogen and CO2 allowances, as well as capital expenditures and costs related to carbon capture and storage (CCS) systems. Based on NPV results, a negative economic assessment has been obtained for all the analyzed variants varying within the range of EUR −903 to −142 million, although the variants based on hard coal achieved a positive IRR (5.1–5.7%) but lower than the assumed discount rates. In Polish conditions, the gasification of lignite seems to be unprofitable, in the assumed scale of total investment outlays and the current price of coal feedstock. The sensitivity analyses indicate that at least a 20% increase of hydrogen price would be required, or a similar reduction of capital expenditures (CAPEX) and costs of operation, for the best variant to make NPV positive. Analyses have also indicated that on the economic basis, only the prices of CO2 allowances exceeding EUR 40/Mg (EUR 52/Mg for lignite) would generate savings due to the availability of CCS systems.

scholarly journals Techno-Economic Assessment of Bio-Energy with Carbon Capture and Storage Systems in a Typical Sugarcane Mill in Brazil

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1129 ◽  
Author(s):  
Sara Restrepo-Valencia ◽  
Arnaldo Walter
Keyword(s):  
Co2 Capture ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Economic Assessment ◽  
Energy Requirements ◽  
Biomass Combustion ◽  
Reference Case ◽  
Cogeneration System ◽  
The Cost ◽  
And Storage

For significantly reducing greenhouse gas emissions, those from electricity generation should be negative by the end of the century. In this sense, bio-energy with carbon capture and storage (BECCS) technology in sugarcane mills could be crucial. This paper presents a technical and economic assessment of BECCS systems in a typical Brazilian sugarcane mill, considering the adoption of advanced—although commercial—steam cogeneration systems. The technical results are based on computational simulations, considering CO2 capture both from fermentation (released during ethanol production) and due to biomass combustion. The post combustion capture technology based on amine was considered integrated to the mill and to the cogeneration system. A range of energy requirements and costs were taken from the literature, and different milling capacities and capturing rates were considered. Results show that CO2 capture from both flows is technically feasible. Capturing CO2 from fermentation is the alternative that should be prioritized as energy requirements for capturing from combustion are meaningful, with high impacts on surplus electricity. In the reference case, the cost of avoided CO2 emissions was estimated at 62 €/t CO2, and this can be reduced to 59 €/t CO2 in case of more efficient technologies, or even to 48 €/t CO2 in case of larger plants.

Techno-Economic Comparison of CO2 Capture Technologies Employed With Natural Gas Derived GTCC

2013 ◽  
Author(s):  
Kostantinos Atsonios ◽  
Antonios Koumanakos ◽  
Kyriakos D. Panopoulos ◽  
Aggelos Doukelis ◽  
Emmanuel Kakaras
Keyword(s):  
Co2 Capture ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Economic Assessment ◽  
Energy System ◽  
Membrane Reactors ◽  
Physical Absorption ◽  
Process Simulations ◽  
And Storage ◽  
Economic Comparison

Carbon Capture and Storage can either concern the removal of carbon as CO2 in flue gases (post-combustion option) or before its combustion in a Gas Turbine (pre-combustion option). Among the numerous CO2 capture technologies, amine scrubbing (MEA and MDEA), physical absorption (Selexol™ and Rectisol™) and H2 separator membrane reactors are investigated and compared in this study. In the pre-combustion options, the final fuel combusted in the GT is a rich-H2 fuel. Process simulations in ASPEN Plus™ showed that the case of H2 separation with Pd-based membranes has the greatest performance as far as the net efficiency of the energy system is concerned. The economic assessment reveals that the technology is promising in terms of cost of CO2 avoided, provided that the current high membrane costs are reduced.

Microfluidic salt precipitation: implications for geological CO2 storage

Lab on a Chip ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 3806-3814
Author(s):  
Tsai-Hsing Martin Ho ◽  
Peichun Amy Tsai
Keyword(s):  
Carbon Capture ◽  
Co2 Storage ◽  
Carbon Capture And Storage ◽  
Salt Precipitation ◽  
Geological Co2 Storage ◽  
Drying Rates ◽  
And Storage ◽  
Storage Processes

Novel microfluidic visualizations reveal the simultaneous dynamics of salt nucleation and fluid drying rates while mimicking carbon capture and storage processes.

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