Carbon Filter Process for Flue-Gas Carbon Capture on Carbonaceous Sorbents: Field Tests of Steam-Aided Vacuum Swing Adsorption

2012 ◽  
Vol 26 (4) ◽  
pp. 2539-2545 ◽  
Author(s):  
Bryce Dutcher ◽  
Kaspars Krutkramelis ◽  
Hertanto Adidharma ◽  
Maciej Radosz
Keyword(s):  
Flue Gas ◽  
Carbon Capture ◽  
Field Tests ◽  
Vacuum Swing Adsorption ◽  
Filter Process ◽  
Carbonaceous Sorbents ◽  
Carbon Filter

Numerical simulation and field test study of desulfurization wastewater evaporation treatment through flue gas

2014 ◽  
Vol 70 (7) ◽  
pp. 1285-1291 ◽  
Author(s):  
Jia-jia Deng ◽  
Liang-ming Pan ◽  
De-qi Chen ◽  
Yu-quan Dong ◽  
Cheng-mu Wang ◽  
...  
Keyword(s):  
Field Test ◽  
Flue Gas ◽  
Cfd Simulation ◽  
Electrostatic Precipitator ◽  
Negative Impact ◽  
Positive Impact ◽  
Field Tests ◽  
Gas Temperature ◽  
Simulation Results ◽  
Desulfurization Wastewater

Aimed at cost saving and pollution reduction, a novel desulfurization wastewater evaporation treatment system (DWETS) for handling wet flue gas desulfurization (WFGD) wastewater of a coal-fired power plant was studied. The system's advantages include simple process, and less investment and space. The feasibility of this system has been proven and the appropriate position and number of nozzles, the spray droplet size and flue gas temperature limitation have been obtained by computational fluid dynamics (CFD) simulation. The simulation results show that a longer duct, smaller diameter and higher flue gas temperature could help to increase the evaporation rate. The optimal DWETS design of Shangdu plant is 100 μm droplet sprayed by two nozzles located at the long duct when the flue gas temperature is 130 °C. Field tests were carried out based on the simulation results. The effects of running DWETS on the downstream devices have been studied. The results show that DWETS has a positive impact on ash removal efficiency and does not have any negative impact on the electrostatic precipitator (ESP), flue gas heat exchanger and WFGD. The pH values of the slurry of WFGD slightly increase when the DWETS is running. The simulation and field test of the DWETS show that it is a feasible future technology for desulfurization wastewater treatment.

Carbon capture and storage using coal fly ash with flue gas

2021 ◽  
Author(s):  
Tamilselvi Dananjayan Rushendra Revathy ◽  
Andimuthu Ramachandran ◽  
Kandasamy Palanivelu
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Carbon Capture ◽  
Coal Fly Ash ◽  
Carbon Capture And Storage ◽  
And Storage

scholarly journals A New Multi-bed Vacuum Swing Adsorption Cycle for CO2 Capture from Flue Gas Streams

2017 ◽  
Vol 114 ◽  
pp. 2467-2480 ◽  
Author(s):  
Paul A. Webley ◽  
Abdul Qader ◽  
Augustine Ntiamoah ◽  
Jianghua Ling ◽  
Penny Xiao ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Flue Gas ◽  
Gas Streams ◽  
Vacuum Swing Adsorption ◽  
Adsorption Cycle

A Pb/Zn Based Chemical Looping System for Hydrogen and Power Production With Carbon Capture

2011 ◽  
Author(s):  
Niall R. McGlashan ◽  
Peter R. N. Childs ◽  
Andrew L. Heyes
Keyword(s):  
Power System ◽  
Flue Gas ◽  
Power Output ◽  
Carbon Capture ◽  
Oxygen Carrier ◽  
Fluid Phase ◽  
Chemical Looping Combustion ◽  
Inlet Temperature ◽  
Chemical Looping ◽  
Lower Efficiency

This paper describes an extension of a novel, carbon-burning, fluid phase chemical looping combustion system proposed previously. The system generates both power and H2 with ‘inherent’ carbon capture using chemical looping combustion (CLC) to perform the main energy release from the fuel. A mixed Pb and Zn based oxygen carrier is used, and due to the thermodynamics of the carbothermic reduction of PbO and ZnO respectively, the system generates a flue gas which consists of a mixture of CO2 and CO. By product H2 is generated from this flue gas using the water-gas shift reaction (WGSR). By varying the proportion of Pb to Zn circulating in the chemical loop, the ratio of CO2 to CO can be controlled, which in turn enables the ratio between the amount of H2 produced to the amount of power generated to be adjusted. By this means, the power output from the system can be ‘turned down’ in periods of low electricity demand without requiring plant shutdown. To facilitate the adjustment of the Pb/Zn ratio, use is made of the two metal’s mutual insolubility, as this means they form in to two liquid layers at the base of the reduction reactor. The amount of Pb and Zn rich liquid drawn from the two layers and subsequently circulated around the system is controlled thereby varying the Pb/Zn ratio. To drive the endothermic reduction of ZnO formed in the oxidiser, hot Zn vapour is ‘blown’ into the reducer where it condenses, releasing latent heat. The Zn vapour to produce this ‘blast’ of hot gas is generated in a flash vessel fed with hot liquid metal extracted from the oxidiser. A mass and energy balance has been conducted for a power system, operating on the Pb/Zn cycle. In the analysis, reactions are assumed to reach equilibrium and losses associated with turbomachinery are considered; however, pressure losses in equipment and pipework are assumed to be negligible. The analysis reveals that a power system with a second law efficiency of between 62% and 68% can be constructed with a peak turbine inlet temperature of only ca. 1850 K. The efficiency varies as the ratio between power and H2 production varies, with the lower efficiency occurring at the maximum power output condition.

scholarly journals An Enhanced Carbon Capture and Storage Process (e-CCS) Applied to Shallow Reservoirs Using Nanofluids Based on Nitrogen-Rich Carbon Nanospheres

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2088 ◽  
Author(s):  
Elizabeth Rodriguez Acevedo ◽  
Farid B. Cortés ◽  
Camilo A. Franco ◽  
Francisco Carrasco-Marín ◽  
Agustín F. Pérez-Cadenas ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Flue Gas ◽  
Carbon Capture ◽  
Co2 Adsorption ◽  
Carbon Capture And Storage ◽  
Co2 Separation ◽  
Storage Process ◽  
Carbon Nanospheres ◽  
And Storage ◽  
Shallow Reservoirs

The implementation of carbon capture and storage process (CCS) has been unsuccessful to date, mainly due to the technical issues and high costs associated with two main stages: (1) CO2 separation from flue gas and (2) CO2 injection in deep geological deposits, more than 300 m, where CO2 is in supercritical conditions. This study proposes, for the first time, an enhanced CCS process (e-CCS), in which the stage of CO2 separation is removed and the flue gas is injected directly in shallow reservoirs located at less than 300 m, where the adsorptive phenomena control CO2 storage. Nitrogen-rich carbon nanospheres were used as modifying agents of the reservoir porous texture to improve both the CO2 adsorption capacity and selectivity. For this purpose, sandstone was impregnated with a nanofluid and CO2 adsorption was evaluated at different pressures (atmospheric pressure and from 3 × 10−3 MPa to 3.0 MPa) and temperatures (0, 25, and 50 °C). As a main result, a mass fraction of only 20% of nanomaterials increased both the surface area and the molecular interactions, so that the increase of adsorption capacity at shallow reservoir conditions (50 °C and 3.0 MPa) was more than 677 times (from 0.00125 to 0.9 mmol g−1).

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