Mechanisms of direct and in-direct sulfation of limestone

Jeong, Seongha; Lee, Kang Soo; Keel, Sang In; Yun, Jin Han; Kim, Yong Jin; Kim, Sang Soo

doi:10.1016/j.fuel.2015.08.034

Cited by 29 publications

(30 citation statements)

References 22 publications

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“…teristic energy of the binary mixture, and ε AA and ε mm are the characteristic energies for like pairs AA and mm, respectively. The normalized effective diffusivity, D * eff,i , is derived by combining Equations (17)(18)(19)(20)(21) as:…”

Section: Mathematical Formulationmentioning

confidence: 99%

A set of Jupyter notebooks for the analysis of transport phenomena and reaction in porous catalyst pellet

Golman

2019

Comp Applic In Engineering

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A set of user friendly Jupyter notebooks was developed to illustrate the techniques used to solve mass and heat balances for chemical and enzyme catalyzed reactions in a porous pellet. The advanced model of chemical vapor deposition reaction in an agglomerate of fine particles was considered as an example of non‐catalytic reactions. The developed notebooks combine the theoretical description of model equations, numerical algorithms, the computer code, and results of simulations with graphs. The computer code can be easily modified to suit user's research needs. This particular software helps students to learn the theoretical basis of mathematical models used for chemical reactions in the porous media while acquiring the practical skills in applying these models for various important reactions.

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Section: Mathematical Formulationmentioning

confidence: 99%

A set of Jupyter notebooks for the analysis of transport phenomena and reaction in porous catalyst pellet

Golman

2019

Comp Applic In Engineering

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“…Coal participates by 60% on SO 2 emissions, crude oil participates by 30% and the rest 10% of SO 2 emissions is due to the combustion of pyrites and mineral sulfur . Limestone and lime have been used for SO 2 capture in fluidized bed or pulverized coal combustors . Nevertheless, the use of fluidized bed technology in Greece and other countries is prohibitive due to very high replacement cost of existing combustors.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Limestone and lime have been used for SO 2 capture in fluidized bed or pulverized coal combustors. [4][5][6][7][8][9][10][11][12] Nevertheless, the use of fluidized bed technology in Greece and other countries is prohibitive due to very high replacement cost of existing combustors. Moreover, the injection of limestone in pulverized lignite combustors is not possible due to very low heat energy of lignites used in power plants.…”

Section: Introductionmentioning

confidence: 99%

Experimental study and parametric analysis of SO₂ capture in limestone fixed bed reactor

Bontzolis

Petraki

Spartinos

2019

J of Chemical Tech & Biotech

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BACKGROUND The use of absorbents, based on calcium, for the reduction of sulfur dioxide (SO2) emissions from power plants has been studied for the last 90 years. The present work is part of a research project, which aims at the development of a fixed and a moving bed limestone filter. A filter is placed after the burning, in order to capture SO2 from the flue gases of pulverized lignite combustors. An experimental study and a parametric analysis in a limestone and lignite fixed bed reactor for SO2 capture were conducted in previous works. RESULTS This work studies experimentally the SO2 capture by analyzing the following parameters: inlet mole fraction of SO2, inlet mole fraction of O2, volumetric flow rate, average temperature in bed, type of calcium carbonate (CaCO3) and length of the solid bed. Under specific circumstances, conversion of SO2 values were found to be greater than 0.99 in the gas outlet for more than 110 min. CONCLUSION Useful conclusions are drawn regarding the behavior of a fixed bed reactor in different conditions. The results highlight the importance of technological interest in the dry process for SO2 capture. © 2019 Society of Chemical Industry

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“…The coal participates by 60% in SO 2 emissions, the crude oil participates by 30% and the rest 10% of SO 2 emissions is due to the combustion of pyrites and mineral sulfur. The limestone and the lime have been used for SO 2 capture in fluidized bed or pulverized coal combustors . The use, still, of fluidized bed technology in Greece and other countries is prohibitive due to the very high replacement cost of existing combustors.…”

Section: Introductionmentioning

confidence: 99%

“…The limestone and the lime have been used for SO 2 capture in fluidized bed or pulverized coal combustors. [1][2][3][4][5][6][7][8] The use, still, of fluidized bed technology in Greece and other countries is prohibitive due to the very high replacement cost of existing combustors. Also, the injection of limestone in pulverized lignite combustors is not possible due to the very low heat energy of lignites, which are used in power plants.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling, steady state simulation, parametric analysis and optimization of SO₂ capture in a countercurrent moving bed (CaO and C) reactor

Stefas

Manavi

Paloukis

et al. 2018

J of Chemical Tech & Biotech

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The use of absorbents based on calcium for the reduction of SO2 emissions from power plants has been studied for the last 30 years. The present work is part of a research project aimed at the development of a moving bed limestone filter. It is placed after burning in order to capture the SO2 from the flue gases of pulverized lignite combustors. A heterogeneous mathematical model was developed for the steady‐state simulation of a gas–solid countercurrent moving bed reactor. The mathematical model was solved using the method of finite elements and gave results for the temperature and conversion profile along the reactor. Also, parametric analysis (for Tg,in, Ts,in, us, qo, yitalicSO2o, yO2o, do, zo) was performed and useful conclusions concerning the behavior of a moving bed reactor in different conditions were drawn. Finally, optimization of conditions was performed to give an SO2 conversion higher than 0.95. The results are of important technological interest as a dry process in applications of SO2 capture. © 2018 Society of Chemical Industry

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Mechanisms of direct and in-direct sulfation of limestone

Cited by 29 publications

References 22 publications

A set of Jupyter notebooks for the analysis of transport phenomena and reaction in porous catalyst pellet

A set of Jupyter notebooks for the analysis of transport phenomena and reaction in porous catalyst pellet

Experimental study and parametric analysis of SO₂ capture in limestone fixed bed reactor

Mathematical modeling, steady state simulation, parametric analysis and optimization of SO₂ capture in a countercurrent moving bed (CaO and C) reactor

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Mechanisms of direct and in-direct sulfation of limestone

Cited by 29 publications

References 22 publications

A set of Jupyter notebooks for the analysis of transport phenomena and reaction in porous catalyst pellet

A set of Jupyter notebooks for the analysis of transport phenomena and reaction in porous catalyst pellet

Experimental study and parametric analysis of SO2 capture in limestone fixed bed reactor

Mathematical modeling, steady state simulation, parametric analysis and optimization of SO2 capture in a countercurrent moving bed (CaO and C) reactor

Contact Info

Product

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Experimental study and parametric analysis of SO₂ capture in limestone fixed bed reactor

Mathematical modeling, steady state simulation, parametric analysis and optimization of SO₂ capture in a countercurrent moving bed (CaO and C) reactor