scholarly journals A Preliminary Techno-Economic Analysis on the Calcium Looping Process with Simultaneous Capture of CO2 and SO2 from a Coal-Based Combustion Power Plant

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2176 ◽  
Author(s):  
Antonio Coppola ◽  
Fabrizio Scala
Keyword(s):  
Power Plant ◽  
Economic Analysis ◽  
Co2 Capture ◽  
Capital Investment ◽  
Carbon Capture ◽  
Power Plants ◽  
Fossil Fuels ◽  
Maintenance Cost ◽  
Base Case ◽  
Calcium Looping

The increase of capital investments and operation and maintenance (O&M) costs represents a current limitation to the diffusion of carbon capture systems for the clean combustion of fossil fuels. However, post-combustion systems, such as calcium looping (CaL), for CO2 capture from flue gas are the most attractive carbon capture systems since they can be installed at new plants and retrofitted into existing power plants. This work investigates the pros and cons of employing a calcium looping system for CO2 capture and also as a desulphurization unit. A preliminary techno-economic analysis was carried out comparing a base case consisting of a coal-based power plant of about 550MWe with a desulphurization unit (Case 1), the same plant but with a CaL system added for CO2 capture (Case 2), or the same plant but with a CaL system for simultaneous capture of CO2 and SO2 and the removal of the desulphurization unit (Case 3). Case 2 resulted in a 67% increase of capital investment with respect to the benchmark case, while the increase was lower (48%) in Case 3. In terms of O&M costs, the most important item was represented by the yearly maintenance cost of the desulphurization unit. In fact, in Case 3, a reduction of O&M costs of about 8% was observed with respect to Case 2.

scholarly journals Economical aspects of the CCS technology integration in the conventional power plant

2017 ◽  
Vol 11 (1) ◽  
pp. 168-180
Author(s):  
Nela Slavu ◽  
Cristian Dinca
Keyword(s):  
Technology Integration ◽  
Power Plant ◽  
Carbon Capture ◽  
Power Plants ◽  
Fossil Fuels ◽  
Process Efficiency ◽  
Absorption Column ◽  
Capture Process ◽  
Ccs Technologies ◽  
The Cost

Abstract One of the way to reduce the greenhouses gases emissions generated by the fossil fuels combustion consists in the Carbon Capture, Transport and Storage (CCS) technologies utilization. The integration of CCS technologies in the coal fired power plants increases the cost of the energy generation. The CCS technology could be a feasible solution in the case of a high value of a CO2 certificate but for the present value an optimization of the CCS technology integration in the power plants is expected. However, for reducing the cost of the energy generated in the case of CCS integration in the power plants, a parametrical study optimization of the CO2 capture process is required. In this study, the chemical absorption process was used and the monoethanolamine with 30 wt. %. The objective of this paper is to analyze the effects of the package type used in the absorption column on the size of the equipment used and, on the energy cost of the power plant with CO2 capture process consequently. The packages types analyzed in this paper are metal Pall rings with different sizes and the rings are made of different metals: aluminum, nickel, cooper, and brass. In the case of metal Pall rings, the utilization of different material has an impact on the absorption column weight. Also, Pall rings made of plastics (polypropylene and polyethylene) were analyzed. The comparative assessment was achieved for a coal fired power plant with an installed power of 100 MW and considering the CO2 capture process efficiency of 90 %.

scholarly journals Exergoeconomic optimization of gas turbine power plants operating parameters using genetic algorithms: A case study

2011 ◽  
Vol 15 (1) ◽  
pp. 43-54 ◽  
Author(s):  
Mofid Gorji-Bandpy ◽  
Hamed Goodarzian
Keyword(s):  
Genetic Algorithms ◽  
Power Plant ◽  
Gas Turbine ◽  
Capital Investment ◽  
Power Plants ◽  
Unit Cost ◽  
Cost Effective ◽  
Base Case ◽  
Operating Parameters ◽  
Gas Turbine Power Plant

Exergoeconomic analysis helps designers to find ways to improve the performance of a system in a cost effective way. This can play a vital role in the analysis, design and optimization of thermal systems. Thermoeconomic optimization is a powerful and effective tool in finding the best solutions between the two competing objectives, minimizing economic costs and maximizing exergetic efficiency. In this paper, operating parameters of a gas turbine power plant that produce 140MW of electricity were optimized using exergoeconomic principles and genetic algorithms. The analysis shows that the cost of final product is 9.78% lower with respect to the base case. This is achieved with 8.77% increase in total capital investment. Also thermoeconomic analysis and evaluation were performed for the gas turbine power plant. The results show the deep relation of the unit cost on the change of the operating parameters.

Hybrid Power Generation Plant for CO2 Capture

2014 ◽  
Vol 136 (5) ◽  
Author(s):  
Shimin Deng ◽  
Rory Hynes ◽  
Brian Drover
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Co2 Capture ◽  
Power Plants ◽  
Performance Comparison ◽  
Base Case ◽  
Hybrid Power ◽  
Hybrid Concept ◽  
Power Generation Plant ◽  
Steam Cycle

In this paper, the issues and challenges of capturing CO2 from a pulverized coal (PC) power plant have been summarized and assessed and a hybrid power generation configuration is developed, which features a gas-turbine cogeneration unit supplying steam for stripping CO2, thereby decoupling the CO2 capture from the steam cycle of PC units. The hybrid power generation cases are modeled by using GTProTM and SteamProTM. The performance of the hybrid power plant is compared with the base case that uses extraction from the steam cycle. Retrofitting existing power plants by this hybrid concept is also assessed; performance comparison and economic analysis indicate that this kind of retrofitting is attractive to utilities with PC power generation fleet.

scholarly journals A New Integration System for Natural Gas Combined Cycle Power Plants with CO2 Capture and Heat Supply

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3055 ◽  
Author(s):  
Yue Hu ◽  
Yachi Gao ◽  
Hui Lv ◽  
Gang Xu ◽  
Shijie Dong
Keyword(s):  
Power Plant ◽  
Natural Gas ◽  
Co2 Capture ◽  
System Integration ◽  
Capital Investment ◽  
Carbon Capture ◽  
Heat Supply ◽  
Combined Cycle ◽  
Integrated System ◽  
Natural Gas Combined Cycle

Although carbon mitigation in power industry is attracting more and more attention around the world, the large scale application of carbon capture technology is obstructed because of the enormous energy consumption and huge capital investment required. In this study, an integrated system with power generation, CO2 capture and heat supply are proposed, which adopts three measures to reutilize the waste heat released from the CO2 capture process, including extracted steam recirculation, a CO2 Rankine cycle and a radiant floor heat subsystem. Amongst these measures, the radiant floor heat subsystem can efficiently reuse the relatively low temperature waste energy in the absorbent cooler. Through thermodynamic analysis, it is determined that the power output of the new integrated system is 19.48 MW higher compared with the decarbonization Natural Gas Combined Cycle (NGCC) power plant without system integration. On the other hand, 247.59 MW of heat can be recovered through the radiant floor heat subsystem, leading to an improved overall energy efficiency of 73.6%. In terms of the economic performance, the integration requires only 2.6% more capital investment than a decarbonization NGCC power plant without system integration and obtains extra revenue of 3.40 $/MWh from the simultaneous heat supply, which reduces the cost of CO2 avoided by 22.3%. The results prove the economic and efficiency potential of a NGCC power plant integrated with carbon capture, which may promote the industrial demonstration of carbon capture theology.

scholarly journals Solar-assisted CO2 capture with amine and ammonia-based chemical absorption：A comparative study

2020 ◽  
pp. 149-149
Author(s):  
Junyao Wang ◽  
Liangxu Liu ◽  
Xuelan Zeng ◽  
Kaixiang Li
Keyword(s):  
Power Plant ◽  
Co2 Capture ◽  
Carbon Capture ◽  
Power Plants ◽  
Storage System ◽  
Energy Storage System ◽  
Climate Data ◽  
Capture Process ◽  
Energy Penalty ◽  
Tianjin City

Intensive energy penalty caused by CO2 separation process is a critical obstacle for retrofitting power plant with carbon capture technology. Therefore, the concept of utilizing solar energy to assist solvent regeneration for post-combustion carbon capture power plant is proposed recently as a promising pathway to compensate the efficiency reduction derived from CO2 capture process. However, the feasibility of solar-assisted post-combustion (SPCC) technologies largely depends on the types of CO2 absorbent, categories of solar thermal collectors, areas of solar field and the integration of thermal energy storage system. Therefore, this paper conducts a comparative analysis on MEA-based and NH3-based SPCC power plants employing two types of solar collectors, i.e the vacuum tube (VT) and the parabolic through collector (PTC), with climate data of Tianjin City. Levelized costs of electricity and cost of CO2 removed are comparatively studied for both SPCC configurations. Results show that the proposed SPCC configurations are economically viable when the price of vacuum the tube (VT) is lower than 86.64$/m2 and 117.29$/m2 for the MEA-based and NH3-based SPCC power plant respectively. Meanwhile, the price of PTC should be less than 111.12$/m2 for the MEA-based and 114.51$/m2 for the NH3-based SPCC power plant. It is indicated that employing the VT for chilled NH3-based SPCC power plant offers a promising approach to reduce the energy penalty with attractive economic performance.

Energy and Exergy Analyses of a Power Plant With Carbon Dioxide Capture Using Multistage Chemical Looping Combustion

2016 ◽  
Vol 139 (3) ◽  
Author(s):  
Bilal Hassan ◽  
Oghare Victor Ogidiama ◽  
Mohammed N. Khan ◽  
Tariq Shamim
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Natural Gas ◽  
Co2 Capture ◽  
Power Plants ◽  
Waste Heat ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Operating Pressure ◽  
Efficiency Gain

A thermodynamic model and parametric analysis of a natural gas-fired power plant with carbon dioxide (CO2) capture using multistage chemical looping combustion (CLC) are presented. CLC is an innovative concept and an attractive option to capture CO2 with a significantly lower energy penalty than other carbon-capture technologies. The principal idea behind CLC is to split the combustion process into two separate steps (redox reactions) carried out in two separate reactors: an oxidation reaction and a reduction reaction, by introducing a suitable metal oxide which acts as an oxygen carrier (OC) that circulates between the two reactors. In this study, an Aspen Plus model was developed by employing the conservation of mass and energy for all components of the CLC system. In the analysis, equilibrium-based thermodynamic reactions with no OC deactivation were considered. The model was employed to investigate the effect of various key operating parameters such as air, fuel, and OC mass flow rates, operating pressure, and waste heat recovery on the performance of a natural gas-fired power plant with multistage CLC. The results of these parameters on the plant's thermal and exergetic efficiencies are presented. Based on the lower heating value, the analysis shows a thermal efficiency gain of more than 6 percentage points for CLC-integrated natural gas power plants compared to similar power plants with pre- or post-combustion CO2 capture technologies.

scholarly journals Techno-Economic Analysis of Biomass Energy Utilization through Gasification Technology for Sustainable Energy Production and Economic Development in Nigeria

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Gbeminiyi M. Sobamowo ◽  
Sunday J. Ojolo
Keyword(s):  
Economic Analysis ◽  
Rural Areas ◽  
Financial Incentives ◽  
Capital Investment ◽  
Biomass Gasification ◽  
Biomass Energy ◽  
Energy Utilization ◽  
Maintenance Cost ◽  
Selling Price ◽  
Gasification Technology

Nigeria has not been able to provide enough electric power to her about 200 million people. The last effort by the federal government to generate 6000 MW power by the end of 2009 failed. Even with the available less than 6000 MW of electricity generated in the country, only about 40% of the population have access to the electricity from the National Grid, out of which, urban centers have more than 80% accessibility while rural areas, which constitute about 70% of the total population, have less than 20% of accessibility to electricity. This paper addresses the possibility of meeting the energy demand in Nigeria through biomass gasification technology. The techno-economic analysis of biomass energy is demonstrated and the advantages of the biomass gasification technology are presented. Following the technical analysis, Nigeria is projected to have total potential of biomass of about 5.5 EJ in 2020 which has been forecast to increase to about 29.8 EJ by 2050. Based on a planned selling price of $0.727/kWh, the net present value of the project was found to be positive, the cost benefit ratio is greater than 1, and the payback period of the project is 10.14 years. These economic indicators established the economic viability of the project at the given cost. However, economic analysis shows a selling price of $0.727/kWh. Therefore, the capital investment cost, operation and maintenance cost, and fuel cost can be reduced through the development of the gasification system using local materials, purposeful and efficient plantation of biomass for the energy generation, giving out of financial incentives by the government to the investors, and locating the power plant very close to the source of feedstock generation.

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