Numerical Investigations of CO2 Sorption and Recovery Process from Wet Flue Gas by Using K2CO3/Al2O3 in a Fixed Bed

2017 ◽  
Vol 32 (1) ◽  
pp. 725-735 ◽  
Author(s):  
Yang Yang You ◽  
Xiang Jun Liu ◽  
Tang Lin Liu
Keyword(s):  
Flue Gas ◽  
Fixed Bed ◽  
Recovery Process ◽  
Numerical Investigations ◽  
Co2 Sorption

K2CO3/Al2O3 for Capturing CO2 in Flue Gas from Power Plants. Part 5: Carbonation and Failure Behavior of K2CO3/Al2O3 in the Continuous CO2 Sorption–Desorption System

2013 ◽  
Vol 27 (8) ◽  
pp. 4804-4809 ◽  
Author(s):  
Ye Wu ◽  
Xiaoping Chen ◽  
Wei Dong ◽  
Chuanwen Zhao ◽  
Zhonglin Zhang ◽  
...  
Keyword(s):  
Flue Gas ◽  
Power Plants ◽  
Failure Behavior ◽  
Co2 Sorption

Preparation and Performance of Several Non-Precious Metal Oxides Catalysts for the Low Temperature SCR of NOx with NH3

2011 ◽  
Vol 356-360 ◽  
pp. 1528-1534
Author(s):  
Wei Fang Dong
Keyword(s):  
Low Temperature ◽  
Metal Oxides ◽  
Flue Gas ◽  
Precious Metal ◽  
Catalytic Reduction ◽  
Fixed Bed ◽  
Catalytic Performance ◽  
Fixed Bed Reactor ◽  
Low Temperature Scr ◽  
Scr Of Nox

A series of non-precious metal oxides catalysts were prepared for low-temperature selective catalytic reduction (SCR) of NOx with NH3 in a fixed bed reactor. The catalytic performance was evaluated by the removal efficiency of NOx and N2selectivity which were respectively detected by flue gas analyzer and flue gas chromatograph. Furthermore, the components of gas products from the above experiments were analysed with 2010 GC-MS. The results illustrated that the MnO2exhibited the highest NOx conversion to 95.46% and the highest selectivity of N2to 100% at temperature of 393K, then followed ZrO2, Al2O3and Fe2O3.

scholarly journals Experimental and Computational Demonstration of a Low-Temperature Waste to By-Product Conversion of U.S. Oil Shale Semi-Coke to a Flue Gas Sorbent

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3195 ◽  
Author(s):  
Kathleen Dupre ◽  
Emily Ryan ◽  
Azat Suleimenov ◽  
Jillian Goldfarb
Keyword(s):  
Surface Area ◽  
Flue Gas ◽  
Oil Shale ◽  
Gas Adsorption ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Ex Situ ◽  
High Temperature Treatment ◽  
Dynamics Modeling ◽  
Gas Treatment

The volatility of crude oil prices incentivizes the use of domestic alternative fossil fuel sources such as oil shale. For ex situ oil shale retorting to be economically and environmentally viable, we must convert the copious amounts of semi-coke waste to an environmentally benign, useable by-product. Using acid and acid + base treatments, we increased the surface area of the semi-coke samples from 15 m2/g (pyrolyzed semi-coke) to upwards of 150 m2/g for hydrochloric acid washed semi-coke. This enhancement in porosity and surface area is accomplished without high temperature treatment, which lowers the overall energy required for such a conversion. XRD analysis confirms that chemical treatments removed the majority of dolomite while retaining other carbonate minerals and maintaining carbon contents of approximately 10%, which is greater than many fly ashes that are commonly used as sorbent materials. SO2 gas adsorption isotherm analysis determined that a double HCl treatment of semi-coke produces sorbents for flue gas treatment with higher SO2 capacities than commonly used fly ash adsorbents. Computational fluid dynamics modeling indicates that the sorbent material could be used in a fixed bed reactor to efficiently remove SO2 from the gas stream.

Flue gas and pure CO2 sorption properties of coal: A comparative study

2006 ◽  
Vol 67 (4) ◽  
pp. 267-279 ◽  
Author(s):  
S. Mazumder ◽  
P. van Hemert ◽  
A. Busch ◽  
K-H.A.A. Wolf ◽  
P. Tejera-Cuesta
Keyword(s):  
Comparative Study ◽  
Flue Gas ◽  
Sorption Properties ◽  
Co2 Sorption

Analysis of fixed bed sorption: Flue gas desulfurization

AIChE Journal ◽  
1974 ◽  
Vol 20 (1) ◽  
pp. 94-103
Author(s):  
Sidney V. Bourgeois ◽  
Frank R. Groves ◽  
Albert H. Wehe
Keyword(s):  
Flue Gas ◽  
Fixed Bed ◽  
Flue Gas Desulfurization

Denitrification Activities of Mo-V-Ti Catalysts Prepared by Dipping Method at Low Temperature

2018 ◽  
Vol 913 ◽  
pp. 900-906
Author(s):  
Dong Zhu Ma ◽  
Jian Li ◽  
Di Yin ◽  
Yuan Huang ◽  
Rui Min Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Conversion Efficiency ◽  
Flue Gas ◽  
Catalytic Reduction ◽  
Fixed Bed ◽  
Space Velocity ◽  
Fixed Bed Reactor ◽  
Optimum Ratio ◽  
Denitrification Activity ◽  
Gas Space

Mo-V-Ti catalysts of low temperature denitrification were prepared by dipping method. In order to study the activity of selective catalytic reduction, the catalyst was placed in a fixed bed reactor. Industrial flue gas was simulated with cylinder gas. The experimental condition is NO: 500ppm, NH3:500ppm, O2:8%, SO2:100ppm, N2: equilibrium gas, space velocity: 36000h-1. Results indicate that the catalyst prepared by dipping method had good denitrification activity and sulfur resistance at low temperature. The optimum ratio of catalyst was 3V2O5-6MoO3-91TiO2 (wt %). The conversion efficiency of NO was 80~93%, and the conversion efficiency of SO2 was less than 1% at 180~260 °C.

The Use of Technogenic Waste to Clean the Flue Gases of Thermal Devices from Harmful Substances

2019 ◽  
Vol 23 (6) ◽  
pp. 4-7
Author(s):  
A.M. Pogodaev ◽  
A.F. Shimansky ◽  
Yu.I. Storozhev ◽  
Ya.V. Kazantsev ◽  
V.S. Zlobin
Keyword(s):  
Sulfur Dioxide ◽  
Flue Gas ◽  
Power Plants ◽  
Thermal Power ◽  
Fixed Bed ◽  
Flue Gases ◽  
Alumina Production ◽  
Laboratory Installation ◽  
Gas Cleaning ◽  
Industrial Experiments

The thermodynamics of the process of calcium sulfate decomposition is considered. An adsorbent for cleaning flue gases from sulfur dioxide in the form of sludge from alumina production is proposed. Conducted semi-industrial experiments on cleaning the flue gases of small thermal power plants and boiler houses from sulfur dioxide using a laboratory installation. Established high (more than 90%) the effectiveness of the proposed adsorbent. The unique possibility of flue gas cleaning from nitrogen oxides of thermal devices using lignite fuel is revealed. A scheme of sequential flue gas cleaning in a suspended and fixed bed of the adsorbent is proposed.

Denitrification Activities of Mg-Mo-V-Ti Catalysts Prepared by Dipping Method at Low Temperature

2018 ◽  
Vol 913 ◽  
pp. 893-899
Author(s):  
Dong Zhu Ma ◽  
Jian Li ◽  
Ling Zhang ◽  
Peng Guo ◽  
Zi Qiang Wen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Oxygen Content ◽  
Oxygen Concentration ◽  
Flue Gas ◽  
Catalytic Reduction ◽  
Fixed Bed ◽  
Space Velocity ◽  
Fixed Bed Reactor ◽  
Sulfur Resistance

Mg-Mo-V-Ti catalysts of low temperature denitrification were prepared by dipping method. In order to study the activity of selective catalytic reduction, the catalyst was placed in a fixed bed reactor. Industrial flue gas was simulated with cylinder gas. Results indicate that the 0.1wt% content of MgO catalyst has good performance on denitration activity and sulfur resistance. The effects of oxygen content, space velocity and reaction temperature on the activity of the 0.1MgO-6MoO3-3V2O5-TiO2 wt% catalyst were investigated. With the increase of oxygen concentration, the denitrification efficiency increases when the oxygen concentration is less than 8%. When the oxygen content is greater than 8%, the denitrification efficiency is almost the same. The denitrification efficiency decreases with the increase of space velocity. The removal efficiency of NO 0.1MgO-6MoO3-3V2O5-TiO2 wt% catalyst over increases first and then becomes stable with the increase of temperature, and the conversion efficiency of SO2 is less than or equal to 2.2% at 120~240 °C.

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