Study of the post-combustion CO2 capture process by absorption-regeneration using amine solvents applied to cement plant flue gases with high CO2 contents

2019 ◽  
Vol 90 ◽  
pp. 102799 ◽  
Author(s):  
Sinda Laribi ◽  
Lionel Dubois ◽  
Guy De Weireld ◽  
Diane Thomas
Keyword(s):  
Co2 Capture ◽  
Flue Gases ◽  
Cement Plant ◽  
Capture Process ◽  
High Co2

scholarly journals Comparison of Technologies for CO2 Capture from Cement Production—Part 2: Cost Analysis

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 542 ◽  
Author(s):  
Stefania Gardarsdottir ◽  
Edoardo De Lena ◽  
Matteo Romano ◽  
Simon Roussanaly ◽  
Mari Voldsund ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Cement Plant ◽  
Fuel Price ◽  
Cost Performance ◽  
Capture Process ◽  
Cement Production ◽  
Calcium Looping ◽  
Electricity Mix ◽  
The Cost ◽  
Technical Basis

This paper presents an assessment of the cost performance of CO2 capture technologies when retrofitted to a cement plant: MEA-based absorption, oxyfuel, chilled ammonia-based absorption (Chilled Ammonia Process), membrane-assisted CO2 liquefaction, and calcium looping. While the technical basis for this study is presented in Part 1 of this paper series, this work presents a comprehensive techno-economic analysis of these CO2 capture technologies based on a capital and operating costs evaluation for retrofit in a cement plant. The cost of the cement plant product, clinker, is shown to increase with 49 to 92% compared to the cost of clinker without capture. The cost of CO2 avoided is between 42 €/tCO2 (for the oxyfuel-based capture process) and 84 €/tCO2 (for the membrane-based assisted liquefaction capture process), while the reference MEA-based absorption capture technology has a cost of 80 €/tCO2. Notably, the cost figures depend strongly on factors such as steam source, electricity mix, electricity price, fuel price and plant-specific characteristics. Hence, this confirms the conclusion of the technical evaluation in Part 1 that for final selection of CO2 capture technology at a specific plant, a plant-specific techno-economic evaluation should be performed, also considering more practical considerations.

scholarly journals Cost and Emissions Reduction in CO2 Capture Plant Dependent on Heat Exchanger Type and Different Process Configurations: Optimum Temperature Approach Analysis

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 425
Author(s):  
Solomon Aforkoghene Aromada ◽  
Nils Henrik Eldrup ◽  
Lars Erik Øi
Keyword(s):  
Heat Exchanger ◽  
Co2 Capture ◽  
Heat Exchangers ◽  
Cost Reduction ◽  
Emissions Reduction ◽  
Cement Plant ◽  
Capture Process ◽  
Shell And Tube ◽  
The Cross ◽  
Vapour Compression

The performance of a plate heat exchanger (PHE), in comparison with the conventional shell and tube types, through a trade-off analysis of energy cost and capital cost resulting from different temperature approaches in the cross-exchanger of a solvent-based CO2 capture process, was evaluated. The aim was to examine the cost reduction and CO2 emission reduction potentials of the different heat exchangers. Each specific heat exchanger type was assumed for the cross-exchanger, the lean amine cooler and the cooler to cool the direct contact cooler’s circulation water. The study was conducted for flue gases from a natural-gas combined-cycle power plant and the Brevik cement plant in Norway. The standard and the lean vapour compression CO2 absorption configurations were used for the study. The PHE outperformed the fixed tube sheet shell and tube heat exchanger (FTS-STHX) and the other STHXs economically and in emissions reduction. The optimal minimum temperature approach for the PHE cases based on CO2 avoided cost were achieved at 4 °C to 7 °C. This is where the energy consumption and indirect emissions are relatively low. The lean vapour compression CO2 capture process with optimum PHE achieved a 16% reduction in CO2 avoided cost in the cement plant process. When the available excess heat for the production of steam for 50% CO2 capture was considered together with the optimum PHE case of the lean vapour compression process, a cost reduction of about 34% was estimated. That is compared to a standard capture process with FTS-STHX without consideration of the excess heat. This highlights the importance of the waste heat at the Norcem cement plant. This study recommends the use of plate heat exchangers for the cross-heat exchanger (at 4–7 °C), lean amine cooler and the DCC unit’s circulation water cooler. To achieve the best possible CO2 capture process economically and in respect of emissions reduction, it is imperative to perform energy cost and capital cost trade-off analysis based on different minimum temperature approaches.

Design Challenges for Combined Cycles With Post-Combustion CO2 Capture

2009 ◽  
Author(s):  
Justin Zachary
Keyword(s):  
Gas Turbine ◽  
Co2 Capture ◽  
Co2 Concentration ◽  
Combined Cycle ◽  
Flue Gases ◽  
Capture Process ◽  
Balance Of Plant ◽  
Combined Cycles ◽  
Ccs Technologies ◽  
The Impact

In the present climate of uncertainty about CO2 emissions legislation, owners and power plant planners are looking into the possibility of accommodating “add-on” CO2 capture and sequestration (CCS) solutions in their current plant designs. The variety of CCS technologies currently under development makes it a very challenging task. Nevertheless, it is evident that the new generation of combined cycles must address the CO2 capture issue. This discussion concentrates on the more mature post-combustion CCS technologies, such as chemical absorption, and the associated equipment requirements in terms of layout, integration within the generating plant, and auxiliary power consumption. The analysis specifically addresses combined cycle plants, where the capture process must accommodate low CO2 concentration in the exhaust gases (around 3%). Several plant configurations and various operational scenarios are evaluated. The issues related to balance-of-plant systems, including water treatment and availability and redundancy criteria, are also examined. The paper discusses the option to increase CO2 concentration by recirculating some of the exhaust flue gases. The impact of recirculation on the performance and operation of major gas turbine components (compressor combustion, turbo-machinery) is analyzed, as is the effect of the additional auxiliary loads needed to cool the flue gases prior to reinjection in the gas turbine inlet. Since the post-combustion CO2 process requires substantial steam flows, the paper provides several design options for the steam turbine that address the need for large steam extractions. Finally, the paper presents the results of studies conducted by Bechtel in which a neutral but proactive technical approach was applied in evaluating a variety of post-combustion CO2 capture technologies.

Shand Coal Fired Power Plant Integrating a Post Combustion CO2 Capture Process

2019 ◽  
Author(s):  
Wayuta Srisang ◽  
Teerawat Sanpasertparnich ◽  
Brent Jacobs ◽  
Stavroula Giannaris ◽  
Corwyn Bruce ◽  
...  
Keyword(s):  
Power Plant ◽  
Co2 Capture ◽  
Capture Process
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