Simulation of the Sour-Compression Unit (SCU) process for CO2 purification applied to flue gases coming from oxy-combustion cement industries

Laribi, Sinda; Dubois, Lionel; Duprez, Marie-Eve; Weireld, Guy De; Thomas, Diane

doi:10.1016/j.compchemeng.2018.11.010

Cited by 11 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The built model was validated by comparison of predicted values with experimental data from industrial-scale plant in Redcar, United Kingdom. Later Laribi et al (2019) [20] have also used Aspen Plus ® simulator to model the SO x and NO x absorption process emitted from both power and cement oxyfuel plants operating under pressure and using water as absorbent solution and a packed column as contactor. In their model, they included a chemical reaction mechanism for the SO x and NO x compounds in the gas/ liquid phases to evaluate the optimal conditions of the CO 2 capture process.…”

Section: Introductionmentioning

confidence: 99%

Pilot-scale Validation of the Modeling of NOx Reactive Absorption Process Using Aqueous Solutions Containing Nitric Acid and Hydrogen Peroxide

Ghriss,

Ben Amor,

Jeday

et al. 2024

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

NOx are harmful pollutants emitted by many industries and must be removed before the gases are released into the atmosphere. Among the various techniques used for NOx removal, reactive absorption by hydrogen peroxide in a packed column has the advantage of being able to transform NOx into nitric acid which can be recycled and reused in the plants. This work aimed at modeling the NOx absorption by means of aqueous solutions of hydrogen peroxide and nitric acid, applied in a packed column operating under different representative conditions. The model established using the Aspen software considers the equilibrium and the kinetics of the reactions taking place both in the gas phase and in the liquid phase as well as the thermodynamic properties of the chemical (molecular and ionic) components estimated using the Electrolyte NRTL model. It allows predicting NOx absorption performances in terms of efficiency and selectivity. The model was validated by comparing simulation results with experimental ones obtained in a pilot-scale absorption column and published previously. The predicted values are in satisfactory agreement with the experimental data showing a deviation between 5 and 8%. Therefore, the model developed in this work could be advantageously used to design industrial-scale reactive NOx absorption columns.

show abstract

Section: Introductionmentioning

confidence: 99%

Pilot-scale Validation of the Modeling of NOx Reactive Absorption Process Using Aqueous Solutions Containing Nitric Acid and Hydrogen Peroxide

Ghriss,

Ben Amor,

Jeday

et al. 2024

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Many researchers have conducted simulation studies to get the optimum operational parameters of various plant processes, such as Aspen PLUS simulation of integrated gasification combined cycle thermodynamic with in situ desulfurization and CO 2 capture [27], circulating fluidized bed reactor [28], power cycle [29], CO 2 liquefaction [30], sour compression unit for CO 2 purification [31,32] and oxy fuel combustion [33], etc. White et al [34][35][36], devised a mechanism to recover pure CO 2 from the oxy fuel combustion process by deploying computer simulation techniques by Aspen plus.…”

Section: Introductionmentioning

confidence: 99%

Simulation Study of an Oxy-Biomass-Based Boiler for Nearly Zero Emission Using Aspen Plus

Shah

Gou

2019

Energies

View full text Add to dashboard Cite

Bioenergy integrated CO2 capture is considered to be one of the viable options to reduce the carbon footprint in the atmosphere, as well as to lower dependability on the usage of fossil fuels. The present simulation-based study comprises the oxy bio-CCS technique with the objective of bringing about cleaner thermal energy production with nearly zero emissions, CO2 capture and purification, and with the ability to remove NOx and SO2 from the flue gas and to generate valuable byproducts, i.e., HNO3 and H2SO4. In the present work, a simulation on utilization of biomass resources by applying the oxy combustion technique was carried out, and CO2 sequestration through pressurized reactive distillation column (PRDC) was integrated into the boiler. Based on our proposed laboratory scale bio-CCS plant with oxy combustion technique, the designed thermal load was kept at 20 kWth using maize stalk as primary fuel. With the objective of achieving cleaner production with near zero emissions, CO2 rich flue gas and moisture generated during oxy combustion were hauled in PRDC for NOx and SO2 absorption and CO2 purification. The oxy combustion technique is unique due to its characteristic low output of NO sourced by fuel inherent nitrogen. The respective mechanisms of fuel inherent nitrogen conversion to NOx, and later, the conversion of NOx and SO2 to HNO3 and H2SO4 respectively, involve complex chemistry with the involvement of N–S intermediate species. Based on the flue gas composition generated by oxy biomass combustion, the focus was given to the fuel NOx, whereby different rates of NO formation from fuel inherent nitrogen were studied to investigate the optimum rates of conversion of NOx during conversion reactions. The rate of conversion of NOx and SO2 were studied under fixed temperature and pressure. The factors affecting the rate of conversion were optimized through sensitivity analysiês to get the best possible operational parameters. These variable factors include ratios of liquid to gas feed flow, vapor-liquid holdups and bottom recycling. The results obtained through optimizing the various factors of the proposed system have shown great potential in terms of maximizing productivity. Around 88.91% of the 20 kWth boiler’s efficiency was obtained. The rate of conversion of NOx and SO2 were recorded at 98.05% and 87.42% respectively under parameters of 30 °C temperature, 3 MPa pressure, 10% feed stream holdup, liquid/gaseous feed stream ratio of 0.04 and a recycling rate of the bottom product of 20%. During the simulation process, production of around four kilograms per hour of CO2 with 94.13% purity was achieved.

show abstract

Experimental Study on Oxy-Fuel Combustion and NO Emission in a Spouted-Fluidized Bed with under Bed Feeding

et al. 2021

J. Therm. Sci.

View full text Add to dashboard Cite

Simulation of the Sour-Compression Unit (SCU) process for CO2 purification applied to flue gases coming from oxy-combustion cement industries

Cited by 11 publications

References 33 publications

Pilot-scale Validation of the Modeling of NOx Reactive Absorption Process Using Aqueous Solutions Containing Nitric Acid and Hydrogen Peroxide

Pilot-scale Validation of the Modeling of NOx Reactive Absorption Process Using Aqueous Solutions Containing Nitric Acid and Hydrogen Peroxide

Simulation Study of an Oxy-Biomass-Based Boiler for Nearly Zero Emission Using Aspen Plus

Experimental Study on Oxy-Fuel Combustion and NO Emission in a Spouted-Fluidized Bed with under Bed Feeding

Contact Info

Product

Resources

About