scholarly journals CO2 Capture Technical Analysis for Gas Turbine Flue Gases with Complementary Cycle Assistance Including Non Linear Mathematical Modeling

2013 ◽  
Vol 17 ◽  
pp. 648-657 ◽  
Author(s):  
Meisam Moghadasi ◽  
Hossein Ghadamian ◽  
Hooman Farzaneh ◽  
Mohammad Moghadasi ◽  
Hassan Ali Ozgoli
Keyword(s):  
Mathematical Modeling ◽  
Gas Turbine ◽  
Co2 Capture ◽  
Technical Analysis ◽  
Flue Gases ◽  
Non Linear

Repowering of Fossil Fuel Power Plants and Reversible Carbonation/Calcination Cycle for CO2 Abatement

2005 ◽  
Author(s):  
Jesu´s M. Escosa ◽  
Cristo´bal Cortes ◽  
Luis M. Romeo
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Co2 Emissions ◽  
Co2 Capture ◽  
Power Plants ◽  
Fossil Fuel ◽  
Flue Gases ◽  
Optimal Integration ◽  
Coal Power ◽  
Fossil Fuel Power Plants

Fossil fuel power plants account for about a third of global carbon dioxide emissions. Coal is the major power-generation fuel, being used twice as extensively as natural gas (IEA, 2003). Moreover, on a global scale, coal demand is expected to double over the period to 2030; IEA estimates that 4500 GWe of new installed power will be required. Coal is expected to provide 40% of this figure. It is thus obvious that coal power plants must be operative to provide such amount of energy in the short term, at the same time reducing their CO2 emissions in a feasible manner and increasing their efficiency and capacity. However, the main technologies currently considered to effect CO2 capture, both post-and pre-combustion, introduce a great economic penalty and largely reduce the capacity and efficiency. One of these technologies involves the separation of CO2 from high temperature flue gases using the reversible carbonation reaction of CaO and the calcination of CaCO3. The process is able to simultaneously capture sulfur dioxide. The major disadvantage of this well-known concept is the great amount of energy consumption in the calcinator and auxiliary equipment. This paper proposes a new, feasible approach to supply this energy which leads to an optimal integration of the process within a conventional coal power plant. Calcination is accomplished in a kiln fired by natural gas, whereas a gas turbine is used to supply all the auxiliary power. Flue gases from the kiln and the gas turbine can substitute a significant part of the heat duty of the steam cycle heaters, thus accomplishing feed water repowering of the steam turbine. This novel CO2-capture cycle is proposed to be integrated with aging coal-fired power plants. The paper shows that an optimal integration of both elements represents one of the best methods to simultaneously achieve: a) an increase of specific generating capacity in a very short period of time, b) a significant abatement of CO2 emissions, and c) an increase of plant efficiency in a cost-effective way.

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.

Development of Hybrid Materials with Activated Carbon and Zeolite 13X for CO2 Capture from Flue Gases by Electric Swing Adsorption

2020 ◽  
Vol 59 (26) ◽  
pp. 12197-12211
Author(s):  
Maria João Regufe ◽  
Alexandre F. P. Ferreira ◽  
José Miguel Loureiro ◽  
Alírio Rodrigues ◽  
Ana Mafalda Ribeiro
Keyword(s):  
Activated Carbon ◽  
Hybrid Materials ◽  
Co2 Capture ◽  
Flue Gases ◽  
Zeolite 13X

scholarly journals RESEARCH OF INFLUENCE OF AIR TEMPERATURE ON THE LEVEL OF NITROGEN OXIDES IN SMOKE GASES OF BOILER PLANTS

2019 ◽  
Vol 9 (4) ◽  
pp. 27-32
Author(s):  
Olga A. BALANDINA ◽  
Svetlana M. PURING
Keyword(s):  
Mathematical Modeling ◽  
Nitric Oxide ◽  
Nitrogen Oxides ◽  
Flue Gas ◽  
Software Package ◽  
Flame Temperature ◽  
Combustion Process ◽  
Flue Gases ◽  
Oxidizing Agent ◽  
Mixture Formation

The analysis of the values of the concentrations of the formed nitrogen oxides and the temperatures of the jet plume under various conditions of mixture formation is carried out. The plots of the distribution of torch temperatures and concentrations of nitric oxide in the calculated area for oxidizer temperatures of 20, 60, 100, 150, and 200 ° C were obtained and analyzed. Mathematical modeling of the gaseous fuel combustion process was carried out using the FlowVision software package. An analysis of the results showed that a decrease in the temperature of the air supplied as an oxidizing agent leads to a significant decrease in the concentration of nitrogen oxides in flue gases, while not significantly affecting the change in the flame temperature. The research results can be used to solve the problems of optimizing boiler plants, in order to reduce harmful flue gas emissions. Further modeling is planned to determine the dependence of the influence of various factors on the degree of formation of nitrogen oxides in the flue gases of boiler plants.

Comparison of Linear and Non-Linear Gas Turbine Performance Diagnostics

2003 ◽  
Author(s):  
Ph. Kamboukos ◽  
K. Mathioudakis
Keyword(s):  
Gas Turbine ◽  
Condition Monitoring ◽  
Theoretical Background ◽  
Diagnostic Methods ◽  
Turbine Performance ◽  
Different Types ◽  
Non Linear ◽  
Computational Procedures ◽  
Monitoring And Diagnostics ◽  
Performance Diagnostics

The features of linear performance diagnostic methods are discussed, in comparison to methods based on full non-linear calculation of performance deviations, for the purpose of condition monitoring and diagnostics. First, the theoretical background of linear methods is overviewed to establish a relationship to the principles used by non-linear methods. Then computational procedures are discussed and compared. The effectiveness of determining component performance deviations by the two types of approaches is examined, on different types of diagnostic situations. A way of establishing criteria to define whether non-linear methods have to be employed is presented. An overall assessment of merits or weaknesses of the two types of methods is attempted, based on the results presented in the paper.

Sign in / Sign up

Export Citation Format

Share Document