Journal ArticleDOI
Model of the Wet Limestone Flue Gas Desulfurization Process for Cost Optimization
Jerzy Warych,Marek Szymanowski +1 more
TLDR
In this paper, a detailed process model of the wet limestone flue gas desulfurization system has been presented, which can be used to calculate indispensable parameters for estimating costs and next to minimize capital and operating costs.Abstract:
A detailed process model of the wet limestone flue gas desulfurization system has been presented. This model can be used to calculate indispensable parameters for estimating costs and next to minimize capital and operating costs. The process model describes most important stage of SO2 removal running in an absorber and a holding tank. It includes absorption of sulfur dioxide, oxidation of SO3-, dissolution of limestone, and crystallization of gypsum. An assumption of thermodynamic equilibrium in the solution has been used. SO2 removal and limestone dissolution calculation has been based on stagnant-film theory. The model has been used for predicting the SO2 removal efficiency in the spray scrubber for process parameters, e.g., L/G, droplet diameter, stoichiometric ratio Ca/S, height of the absorption section, gas velocity, concentration in liquid-phase ions of Mg2+ and Cl-, and liquid pH. This model could be used to describe a multilevel spray system, too. The results of this model are in agreement with d...read more
Citations
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Journal ArticleDOI
Status of Flue Gas Desulphurisation (FGD) systems from coal-fired power plants: Overview of the physic-chemical control processes of wet limestone FGDs
TL;DR: In this paper, a general review of the FGD technologies used to abate sulphur emissions from coal-fired power plants, and exposes the major physic-chemical processes occurring during wet limestone FGD is presented.
Journal ArticleDOI
Prediction of SO2 removal efficiency for wet Flue Gas Desulfurization
TL;DR: In this article, the SO 2 was removed by absorbing and reacting SO 2 with limestone slurry, and limestone scrubbing was accomplished in a spraying reactor Experimental investigations for effects of different operating variables on the SO2 removal showed the reasonable process parameters such as the pH value of the liquid phase, droplet size of the spray and the flow rates of liquid and gas.
Journal ArticleDOI
A model for performance optimization of wet flue gas desulfurization systems of power plants
TL;DR: Wang et al. as discussed by the authors developed a model of limestone/gypsum wet flue gas desulfurization (WFGD) system based on unsteady theory, and the models of processes of absorption section and oxidation section were developed and incorporated into the WFGD integral model.
Journal ArticleDOI
Simulation of the operation of an industrial wet flue gas desulfurization system
TL;DR: In this article, the simulation of a wet flue gas desulfurization (FGD) unit with spray tower of a power plant is presented, aiming at an efficient follow-up and the optimization of the FGD system operation.
Journal ArticleDOI
Full-scale measurements of SO2 gas phase concentrations and slurry compositions in a wet flue gas desulphurisation spray absorber
Helle G. Nygaard,Søren Kiil,Jan Erik Johnsson,Jørgen N. Jensen,Jørn Hansen,Folmer Fogh,Kim Dam-Johansen +6 more
TL;DR: In this paper, a probe for in situ sampling of gas phase concentrations in wet FGD spray absorbers was developed and applied for measuring axial profiles of the SO 2 gas phase concentration in the absorber.
References
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Chemical Engineering Use of Catalyzed Sulfite Oxidation Kinetics for the Determination of Mass Transfer Characteristics of Gas-Liquid Contactors
V. Linek,Václav Vacek +1 more
Journal ArticleDOI
Modeling the absorption of SO2 in a spray scrubber using the penetration theory
TL;DR: In this paper, a model based on penetration theory has been developed to calculate the dynamic absorption rate of sulfur dioxide into a droplet of limestone slurry, which includes both instantaneous equilibrium reactions and reactions with finite rates; limestone dissolution, sulfite oxidation, gypsum crystallization and the hydrolysis reaction of CO2.
Journal ArticleDOI
Experimental investigation and modeling of a wet flue gas desulfurization pilot plant
TL;DR: A detailed model for a wet flue gas desulfurization (FGD) pilot plant, based on the packed tower concept, has been developed in this article, where all important rate-determining steps, absorption of SO2, oxidation of H...