scholarly journals Kinetic and economic analysis of reactive capture of dilute carbon dioxide with Grignard reagents

2015 ◽  
Vol 183 ◽  
pp. 47-65 ◽  
Author(s):  
G. R. M. Dowson ◽  
I. Dimitriou ◽  
R. E. Owen ◽  
D. G. Reed ◽  
R. W. K. Allen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Economic Analysis ◽  
Flue Gas ◽  
Earth Metal ◽  
Production Costs ◽  
Grignard Reagents ◽  
Energetic Cost ◽  
Renewable Electricity ◽  
Capture Process ◽  
Market Values

Carbon Dioxide Utilisation (CDU) processes face significant challenges, especially in the energetic cost of carbon capture from flue gas and the uphill energy gradient for CO2reduction. Both of these stumbling blocks can be addressed by using alkaline earth metal compounds, such as Grignard reagents, as sacrificial capture agents. We have investigated the performance of these reagents in their ability to both capture and activate CO2directly from dried flue gas (essentially avoiding the costly capture process entirely) at room temperature and ambient pressures with high yield and selectivity. Naturally, to make the process sustainable, these reagents must then be recycled and regenerated. This would potentially be carried out using existing industrial processes and renewable electricity. This offers the possibility of creating a closed loop system whereby alcohols and certain hydrocarbons may be carboxylated with CO2and renewable electricity to create higher-value products containing captured carbon. A preliminary Techno-Economic Analysis (TEA) of an example looped process has been carried out to identify the electrical and raw material supply demands and hence determine production costs. These have compared broadly favourably with existing market values.

Techno-Economic Analysis of Postcombustion Processes for the Capture of Carbon Dioxide from Power Plant Flue Gas

2010 ◽  
Vol 49 (5) ◽  
pp. 2363-2370 ◽  
Author(s):  
Marc-Oliver Schach ◽  
Rüdiger Schneider ◽  
Henning Schramm ◽  
Jens-Uwe Repke
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Economic Analysis ◽  
Flue Gas

scholarly journals Evaluation of Emissions of 2-Amino-2-Methyl-1-Propanol Degradation Products by adding Degradation Reactions to the Carbon Dioxide Capture Unit

2021 ◽  
Vol 24 (11) ◽  
pp. 1993-1998
Author(s):  
EI Osagie
Keyword(s):  
Carbon Dioxide ◽  
Flue Gas ◽  
Degradation Products ◽  
Operating Cost ◽  
Aspen Plus ◽  
Side Reactions ◽  
Process Variables ◽  
Capture Process ◽  
Plant Model ◽  
Degradation Reactions

Degradation is a major problem which poses lots of emission risk during chemical absorption process with amine solvents. Degradation occurs through irreversible side reactions with CO2 and other flue gas components, forming into products that cannot easily regenerate. The degradation products then react with amines to form thermally stable salts, which accumulate in the system over time. The problems associated with degradation include decreased plant equipment life, foaming, corrosion, high solution viscosity, and increased operating cost. Amines capture about 70 90% CO2 from commercial power stations. These high removal rates have many environmental impacts due to their degradation products. Researchers have therefore shown interest in characterising and quantifying atmospheric emissions of amines and their degradation products. In this study, 2-Amino-2-Methyl-1-Propanol (AMP) degradation reactions were included into a largescale capture plant model to evaluate the influence of process variables, the emissions of AMP and its degradation products. Steadystate simulations were performed using Aspen Plus® V8.4 software to provide a full assessment of the degradation products and their impact on the capture process. This assessment is important because it identifies and quantifies all pollutants emitted from the process plant. The results of the simulation indicate that AMP emissions are 3.04E+03mg/Nm3 of CO2 lean flue gas, while the quantity of AMP lost due to degradation was 37.88kg/s for the largescale capture plant. The results further showed that among the gases emitted, ammonia was highest, while acetone was the highest gas formed. In this study, 2-amino-2-methyl-1-propanol (AMP) degradation reactions were included into a largescale carbon dioxide (CO2) capture plant model to evaluate the influence of process variables, AMP emissions and its degradation products. Steadystate simulations were performed using Aspen Plus® V8.4 software to provide a full assessment of the degradation products and their impact on the largescale AMP capture process. The results of the equilibrium model developed in this study revealed that AMP emissions are 3.04E+03mg/Nm3 of CO2 lean flue gas, while the quantity of AMP lost due to degradation was 37.88kg/s for the largescale capture plant. More importantly, the emissions obtained from the PWOD and PWD are 7.80E+03 mg/Nm3 and 9.82E+03 mg/Nm3 of CO2 respectively. Keywords: oxidative degradation, 2amino2methyl1 propanol, emissions, modelling

Production of Synthetic Natural Gas From Carbon Dioxide and Renewably Generated Hydrogen: A Techno-Economic Analysis of a Power-to-Gas Strategy

2018 ◽  
Vol 141 (2) ◽  
Author(s):  
William L. Becker ◽  
Michael Penev ◽  
Robert J. Braun
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Production ◽  
Natural Gas ◽  
Economic Analysis ◽  
Production Costs ◽  
Plant Design ◽  
Low Carbon ◽  
Synthetic Natural Gas ◽  
Methanation Reaction ◽  
Power To Gas

Power-to-gas to energy systems are of increasing interest for low carbon fuels production and as a low-cost grid-balancing solution for renewables penetration. However, such gas generation systems are typically focused on hydrogen production, which has compatibility issues with the existing natural gas pipeline infrastructures. This study presents a power-to-synthetic natural gas (SNG) plant design and a techno-economic analysis of its performance for producing SNG by reacting renewably generated hydrogen from low-temperature electrolysis with captured carbon dioxide. The study presents a “bulk” methanation process that is unique due to the high concentration of carbon oxides and hydrogen. Carbon dioxide, as the only carbon feedstock, has much different reaction characteristics than carbon monoxide. Thermodynamic and kinetic considerations of the methanation reaction are explored to design a system of multistaged reactors for the conversion of hydrogen and carbon dioxide to SNG. Heat recuperation from the methanation reaction is accomplished using organic Rankine cycle (ORC) units to generate electricity. The product SNG has a Wobbe index of 47.5 MJ/m3 and the overall plant efficiency (H2/CO2 to SNG) is shown to be 78.1% LHV (83.2% HHV). The nominal production cost for SNG is estimated at 132 $/MWh (38.8 $/MMBTU) with 3 $/kg hydrogen and a 65% capacity factor. At U.S. DOE target hydrogen production costs (2.2 $/kg), SNG cost is estimated to be as low as 97.6 $/MWh (28.6 $/MMBtu or 1.46 $/kgSNG).

Modeling and simulation for post-combustion carbon dioxide capture from power plant flue gas with economic analysis

2015 ◽  
pp. 150527095459001 ◽  
Author(s):  
Nupur Gupta ◽  
Arijit Mondal ◽  
Bisweswar Das ◽  
Binay Deogam ◽  
Sanjib Barma ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Economic Analysis ◽  
Modeling And Simulation ◽  
Flue Gas ◽  
Carbon Dioxide Capture

PROFITABILITAS USAHA PETERNAKAN AYAM BROILER DENGAN TIPE KANDANG YANG BERBEDA

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Nurul Mukminah ◽  
Rita Purwasih
Keyword(s):  
Economic Analysis ◽  
Production Cost ◽  
Broiler Chicken ◽  
Production Costs ◽  
Different Types

This study aims to determine and compare the profitability of different types of broiler chicken farms (open and cloused houses) in Subang Regency. This study involved 9 farmers consisting of 5 farmers with closed house and 4 farmers with open house who partnered with PT. Surya Unggas Mandiri (PT. SUM). Production costs taken are 2 production periods from May-August 2018. Data are analyzed using economic analysis and descriptive methods. The results showed that the production cost per period per 1000 birds closed house was higher (Rp. 27.656.768,-) compared to open house (Rp. 24.975.671,-). The revenue per period per 1000 birds of closed house is higher (Rp. 30.606.931,-) compared to open house (Rp. 25.788.618,-). The profit of farmers who use closed house is higher (Rp. 2.621/period/bird) than open house (Rp.417,-). The profitability in close house s is 9.48% and is very feasible to develop

Application of Disk Aerators to Recarbonation of Alkaline Wastewater from Wet Gasification of Carbide

1991 ◽  
Vol 24 (7) ◽  
pp. 277-284 ◽  
Author(s):  
E. Gomólka ◽  
B. Gomólka
Keyword(s):  
Carbon Dioxide ◽  
Liquid Phase ◽  
Gas Phase ◽  
Flue Gas ◽  
Carbonic Acid ◽  
Low Cost ◽  
Flue Gases ◽  
Carbon Dioxide Content ◽  
Patent Claim ◽  
Phase Dispersion

Whenever possible, neutralization of alkaline wastewater should involve low-cost acid. It is conventional to make use of carbonic acid produced via the reaction of carbon dioxide (contained in flue gases) with water according to the following equation: Carbon dioxide content in the flue gas stream varies from 10% to 15%. The flue gas stream may either be passed to the wastewater contained in the recarbonizers, or. enter the scrubbers (which are continually sprayed with wastewater) from the bottom in oountercurrent. The reactors, in which recarbonation occurs, have the ability to expand the contact surface between gaseous and liquid phase. This can be achieved by gas phase dispersion in the liquid phase (bubbling), by liquid phase dispersion in the gas phase (spraying), or by bubbling and spraying, and mixing. These concurrent operations are carried out during motion of the disk aerator (which is a patent claim). The authors describe the functioning of the disk aerator, the composition of the wastewater produced during wet gasification of carbide, the chemistry of recarbonation and decarbonation, and the concept of applying the disk aerator so as to make the wastewater fit for reuse (after suitable neutralization) as feeding water in acetylene generators.

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