Jongkee Park - Academia.edu (original) (raw)

Papers by Jongkee Park

한국수소 및 신에너지학회논문집, Sep 1, 2007

Chemical Engineering Journal, 2022

Korean Journal of Chemical Engineering, 2007

Ammonia water was investigated as a new absorbent of the chemical absorption process for the remo... more Ammonia water was investigated as a new absorbent of the chemical absorption process for the removal of CO2 in flue gas. The suitable range of ammonia water concentration and CO2 loading (mol CO2/mol NH3) were decided in the point of view of CO2 absorption capacity and NH4HCO3 precipitation. The absorption capacity of CO2 and the precipitation of NH4HCO3 in liquid phase were calculated by the Pitzer model for electrolyte solution. The CO2 absorption capacity of the ammonia water over 5 molNH3/kgH2O was higher than that of conventional amine absorbent. The CO2 loadings where precipitation occurred were decided at various absorbent concentrations. Theses values were higher than 0.5 in the concentration range of 5-14 molNH3/kgH2O at 293, 313 K. The absorber for the removal of CO2 in flue gas could be operated without NH4HCO3 precipitation by using high concentration of ammonia water below these CO2 loading values. The optimum temperature of the ammonia water absorbent for removal of CO...

A reactive distillation tower equipped with 10 catalyst-packed plates (9.8 cm 3 of solid acidic c... more A reactive distillation tower equipped with 10 catalyst-packed plates (9.8 cm 3 of solid acidic catalyst packed on each plate), five equivalent separation trays above the catalyst packed plates, and three equivalent separation trays below the catalyst packed plates was used for reactive distillation experiments. The feed rates of acetic acid and ethanol were 2.65 and 3.71 mole/hr, respectively. When the reflux ratio was 3.0, the concentration of ethyl acetate at the top of the reactive distillation tower was 70 mole%. A final ethyl acetate product (over 98 wt%) was obtained through a further distillation. Modeling of the reactive distillation process was undertaken and a computer program was coded. Process simulations were conducted using the program; these simulation results explained the experimental measurements within 5 % error.

Process for the production of 1-butene by separating olefins from C4 of a gaseous mixture compris... more Process for the production of 1-butene by separating olefins from C4 of a gaseous mixture comprising olefins / paraffins of C4 through desorption by displacement with desorbent and then distillation of the olefins of C4 separated, in an apparatus including an installation adsorption composed of three adsorption towers (AD-1, AD-2, AD-3) loaded with adsorbents which adsorb olefins selectively and two distillation towers are a distillation (D2) for separation of olefins / desorbent and another distillation tower (D1) for the separation of paraffins / desorbent, and a distillation tower to obtain 1-butene by distillation olefin C4 produced from installation adsorption, comprising the process: an adsorption process including an adsorption step for introducing the gas mixture of olefins / paraffins of C4 in the adsorption towers (AD-1, AD-2, AD-3) loaded with adsorbent selective olefin to adsorb olefins adsorbents, download paraffins unadsorbed and desorbent retained in the adsorption to...

Fuel, 2019

Generally, isobutylene is produced by petroleum-derived chemical processes, but manufacturing met... more Generally, isobutylene is produced by petroleum-derived chemical processes, but manufacturing methods using renewable sources, such as biomass, have been considered because of limited amounts of fossil fuel and environmental issues. In this study, isobutylene was converted from isobutanol through dehydration by hydrogen ions generated from oxalic acid and the Fenton reaction during the fermentation of wood-rot fungus, Fomitopsis palustris. The formation of isobutylene from isobutanol was confirmed by in vitro reactions simulating the Fenton reaction caused by F. palustris. The maximum production rate of isobutylene was 34.7 nmol h −1 g cell −1. This was approximately 5.9 times higher than that of a previous study of isobutylene production by Saccharomyces cerevisiae mevalonate diphosphate. Unlike previous biological production studies of isobutylene, our findings showed that isobutylene was converted through the dehydration of isobutanol during fermentation of F. palustris.

Journal of Chemical Engineering of Japan, 2017

Binary mixtures of tetrahydrofuran and methanol have an azeotropic point around 0.5 for the mol f... more Binary mixtures of tetrahydrofuran and methanol have an azeotropic point around 0.5 for the mol fraction of tetrahydrofuran at 100 kPa. In this work, process simulation of extractive distillation was performed for the separation of binary mixtures of tetrahydrofuran and methanol, using ethylene glycol as an extracting agent. Prior to the simulation, vapor liquid equilibria for the binary systems containing ethylene glycol were measured and modeled. According to the simulation results, the azeotropic mixture of tetrahydrofuran and methanol was separated with the extractive distillation process using ethylene glycol as the extracting agent.

Korean Journal of Chemical Engineering, 2017

Adsorption and desorption dynamics of CF 4 on an activated carbon bed were studied experimentally... more Adsorption and desorption dynamics of CF 4 on an activated carbon bed were studied experimentally and theoretically, focusing on pressure-changing steps. The theoretical model used the ideal adsorbed solution (IAS) theory and the linear driving force (LDF) approximation as equilibrium and mass transfer models, respectively. Adsorption breakthrough curves of raw CF 4 gas (500, 1,000, and 1,500 ppm) were well predicted by the theoretical model and the diffusion time constant for CF 4 was found to be 3.3×10 −3 s −1 from breakthrough curve fitting. Changes in the CF 4 concentration during depressurization could be easily predicted using the above mathematical model when the half-cycle time (θ c) was above 0.1. However, significant discrepancies were observed between the predicted CF 4 concentrations and the experimental data when θ c was 0.1. Nakao and Suzuki also reported that proportional constant of LDF approximation (=KD e /R p 2) needs to be modified when θ c is less than 0.1.

Journal of Chemical Engineering of Japan, 2015

The Brunauer-Emmitt-Teller (BET) equation for multicomponent adsorption was derived using assumpt... more The Brunauer-Emmitt-Teller (BET) equation for multicomponent adsorption was derived using assumptions similar to those used in the derivation of the original BET equation. In addition to the assumptions used in the derivation of the original BET equation, the BET equation for mixture adsorption was obtained by assuming that multilayer adsorption in a given layer is independent of the identity of the molecule adsorbed beneath it in the previous layer. The adsorption and desorption processes were considered to be reactions and the expression for the equilibrium concentration on surface was obtained using the equilibrium constants of the reactions. The performance of the BET equation derived for mixtures was compared with that of the widely used extended Langmuir equation using some selected binary adsorption isotherm data shown in the literature. The performance of the BET equation derived in this work was better than that of the extended Langmuir equation in the prediction of adsorbed phase concentrations and adsorbed amounts for the binary systems considered in this work.

In this study, experimental vapor pressures and densities of vapor and liquid phases versus tempe... more In this study, experimental vapor pressures and densities of vapor and liquid phases versus temperature were estimated using PC-SAFT equation. The estimated results were compared with those using PR equation of state. For the vapor phase densities, both equations well predicted the literature data. However, PC-SAFT equation showed better prediction capability for liquid phase densities. In the comparison of vapor-liquid equilibrium prediction capability for the binary systems of methane and ethane, PC-SAFT equation was better than the PR equation.

The research on production and application of hydrogen as an alternative energy in the future is ... more The research on production and application of hydrogen as an alternative energy in the future is being carried out actively. It hydrogen storage is necessary in order that user use hydrogen economically without much difficulty. Among the ways of hydrogen storage the method which is compressed hydrogen gas by high pressure is easier for application than other methods. In this study, we have been calculated gas with changing pressure and temperature variation of container wall through applied to mass and energy balance equation when compressing hydrogen by high pressure, and also to Beattie-Bridgeman equation of state for the kinetic of hydrogen. We will apply above date as a preliminary for design of hydrogen storage tank.

Adsorption Science and Technology, 2000

During the present reportinB period, experimental measurements were obtained on the solubility of... more During the present reportinB period, experimental measurements were obtained on the solubility of :arbon monoxide (CO) in selected hydrocarbons using our static type equilibri'_m ceil. Binary mixtures involving CO + n-eicosane (n-C20), n-octacosane _n-C28), and n-hexatricontane (n-C36) were studied at temperatures from 22_.2 to _23.2 K and pressures to 104 bar. These data were analyzed using the Zsave-Redlich-Kwong and Peng-Robinson equaUions of state. While a single inter=_c_ion parameter, Cij , describes the n-C20 and n-C28 measurements within 0.CO-in mole fraction over the full temperature range, :emperature dependent :arameters are required to adequately fit the n-C36 data. The present data are in reasonable agreement with the earlier measurements of Huang and cowor::ers: in _eneral, deviations within 0.004 in mole fraction are observed. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade n_me, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views j_AS_E R and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

Journal of Chemical & Engineering Data, 1996

The solubilities of hydrogen in benzene, naphthalene, phenanthrene, and pyrene were measured usin... more The solubilities of hydrogen in benzene, naphthalene, phenanthrene, and pyrene were measured using a static equilibrium cell over the temperature range from 323.2 to 433.2 K and pressures to 21.7 MPa. The uncertainty in these new solubility measurements is estimated to be less than 0.001 in mole fraction. The data were analyzed using the Soave-Redlich-Kwong (SRK) and Peng-Robinson (PR) equations

Journal of Chemical & Engineering Data, 1995

Industrial processes such as petroleum refining, coal conversion, enhanced oil recovery, and supe... more Industrial processes such as petroleum refining, coal conversion, enhanced oil recovery, and supercritical separation have created great demand for phase equilibrium data for asymmetric mixtures. The solubilities of carbon monoxide in benzene, naphthalene, phenanthrene, and pyrene were measured using a static equilibrium cell over the temperature range from 323.2 to 433.2 K and pressures to 23.3 MPa. The uncertainty in these solubility measurements is estimated to be less than 0.001 in mole fraction. The data were analyzed using the Soave-Redlich-Kwong (SRK) and Peng-Robinson (PR) equations of state (EOS). In general, the two equations represent the experimental data well over the complete temperature range when one interaction parameter is used for each binary system. Marginal improvements in equation of state predictions are realized when an additional interaction parameter is used.

Journal of Chemical & Engineering Data, 1995

The solubilities of hydrogen in decane, eicosane, octacosane, and hexatriacontane were measured u... more The solubilities of hydrogen in decane, eicosane, octacosane, and hexatriacontane were measured using a static equilibrium cell over the temperature range from 323.2 to 423.2 K and pressures to 17.4 MPa. The uncertainty in these new solubility measurements is estimated to be less than 0.001 in mole fraction. The data were analyzed using the Soave-Redlich-Kwong (SRK) and Peng-Robinson (PR) equations of state. In general, the two equations represent the experimental data well when a single interaction parameter is used for each binary system. The present data suggest that the interaction parameter, Cv, is highly temperature dependent, and that the use of a second interaction parameter, Dv, is not merited.

Chemical Engineering Communications, 1990

The surface excess and the heat of immersion in the adsorption from binary mixtures on the active... more The surface excess and the heat of immersion in the adsorption from binary mixtures on the active carbon surface were calculated in terms of the concentrations of adsorbed phase, the adsorption capacity ratios and the heats of immersion of pure compounds. The surface concentrations of binary mixtures were obtained from the thermodynamic model incorporating the intermolecular interactions between the surface and bulk molecules, and a model for surface activity coefficient considering the orientational states of adsorbed molecules, and the UNIQUAC equation. The calculated adsorption isotherms and heats of immersion were fair agreement with experiments of various binary isotherms.

한국수소 및 신에너지학회논문집, Sep 1, 2007

Chemical Engineering Journal, 2022

Korean Journal of Chemical Engineering, 2007

Ammonia water was investigated as a new absorbent of the chemical absorption process for the remo... more Ammonia water was investigated as a new absorbent of the chemical absorption process for the removal of CO2 in flue gas. The suitable range of ammonia water concentration and CO2 loading (mol CO2/mol NH3) were decided in the point of view of CO2 absorption capacity and NH4HCO3 precipitation. The absorption capacity of CO2 and the precipitation of NH4HCO3 in liquid phase were calculated by the Pitzer model for electrolyte solution. The CO2 absorption capacity of the ammonia water over 5 molNH3/kgH2O was higher than that of conventional amine absorbent. The CO2 loadings where precipitation occurred were decided at various absorbent concentrations. Theses values were higher than 0.5 in the concentration range of 5-14 molNH3/kgH2O at 293, 313 K. The absorber for the removal of CO2 in flue gas could be operated without NH4HCO3 precipitation by using high concentration of ammonia water below these CO2 loading values. The optimum temperature of the ammonia water absorbent for removal of CO...

A reactive distillation tower equipped with 10 catalyst-packed plates (9.8 cm 3 of solid acidic c... more A reactive distillation tower equipped with 10 catalyst-packed plates (9.8 cm 3 of solid acidic catalyst packed on each plate), five equivalent separation trays above the catalyst packed plates, and three equivalent separation trays below the catalyst packed plates was used for reactive distillation experiments. The feed rates of acetic acid and ethanol were 2.65 and 3.71 mole/hr, respectively. When the reflux ratio was 3.0, the concentration of ethyl acetate at the top of the reactive distillation tower was 70 mole%. A final ethyl acetate product (over 98 wt%) was obtained through a further distillation. Modeling of the reactive distillation process was undertaken and a computer program was coded. Process simulations were conducted using the program; these simulation results explained the experimental measurements within 5 % error.

Process for the production of 1-butene by separating olefins from C4 of a gaseous mixture compris... more Process for the production of 1-butene by separating olefins from C4 of a gaseous mixture comprising olefins / paraffins of C4 through desorption by displacement with desorbent and then distillation of the olefins of C4 separated, in an apparatus including an installation adsorption composed of three adsorption towers (AD-1, AD-2, AD-3) loaded with adsorbents which adsorb olefins selectively and two distillation towers are a distillation (D2) for separation of olefins / desorbent and another distillation tower (D1) for the separation of paraffins / desorbent, and a distillation tower to obtain 1-butene by distillation olefin C4 produced from installation adsorption, comprising the process: an adsorption process including an adsorption step for introducing the gas mixture of olefins / paraffins of C4 in the adsorption towers (AD-1, AD-2, AD-3) loaded with adsorbent selective olefin to adsorb olefins adsorbents, download paraffins unadsorbed and desorbent retained in the adsorption to...

Fuel, 2019

Generally, isobutylene is produced by petroleum-derived chemical processes, but manufacturing met... more Generally, isobutylene is produced by petroleum-derived chemical processes, but manufacturing methods using renewable sources, such as biomass, have been considered because of limited amounts of fossil fuel and environmental issues. In this study, isobutylene was converted from isobutanol through dehydration by hydrogen ions generated from oxalic acid and the Fenton reaction during the fermentation of wood-rot fungus, Fomitopsis palustris. The formation of isobutylene from isobutanol was confirmed by in vitro reactions simulating the Fenton reaction caused by F. palustris. The maximum production rate of isobutylene was 34.7 nmol h −1 g cell −1. This was approximately 5.9 times higher than that of a previous study of isobutylene production by Saccharomyces cerevisiae mevalonate diphosphate. Unlike previous biological production studies of isobutylene, our findings showed that isobutylene was converted through the dehydration of isobutanol during fermentation of F. palustris.

Journal of Chemical Engineering of Japan, 2017

Binary mixtures of tetrahydrofuran and methanol have an azeotropic point around 0.5 for the mol f... more Binary mixtures of tetrahydrofuran and methanol have an azeotropic point around 0.5 for the mol fraction of tetrahydrofuran at 100 kPa. In this work, process simulation of extractive distillation was performed for the separation of binary mixtures of tetrahydrofuran and methanol, using ethylene glycol as an extracting agent. Prior to the simulation, vapor liquid equilibria for the binary systems containing ethylene glycol were measured and modeled. According to the simulation results, the azeotropic mixture of tetrahydrofuran and methanol was separated with the extractive distillation process using ethylene glycol as the extracting agent.

Korean Journal of Chemical Engineering, 2017

Adsorption and desorption dynamics of CF 4 on an activated carbon bed were studied experimentally... more Adsorption and desorption dynamics of CF 4 on an activated carbon bed were studied experimentally and theoretically, focusing on pressure-changing steps. The theoretical model used the ideal adsorbed solution (IAS) theory and the linear driving force (LDF) approximation as equilibrium and mass transfer models, respectively. Adsorption breakthrough curves of raw CF 4 gas (500, 1,000, and 1,500 ppm) were well predicted by the theoretical model and the diffusion time constant for CF 4 was found to be 3.3×10 −3 s −1 from breakthrough curve fitting. Changes in the CF 4 concentration during depressurization could be easily predicted using the above mathematical model when the half-cycle time (θ c) was above 0.1. However, significant discrepancies were observed between the predicted CF 4 concentrations and the experimental data when θ c was 0.1. Nakao and Suzuki also reported that proportional constant of LDF approximation (=KD e /R p 2) needs to be modified when θ c is less than 0.1.

Journal of Chemical Engineering of Japan, 2015

The Brunauer-Emmitt-Teller (BET) equation for multicomponent adsorption was derived using assumpt... more The Brunauer-Emmitt-Teller (BET) equation for multicomponent adsorption was derived using assumptions similar to those used in the derivation of the original BET equation. In addition to the assumptions used in the derivation of the original BET equation, the BET equation for mixture adsorption was obtained by assuming that multilayer adsorption in a given layer is independent of the identity of the molecule adsorbed beneath it in the previous layer. The adsorption and desorption processes were considered to be reactions and the expression for the equilibrium concentration on surface was obtained using the equilibrium constants of the reactions. The performance of the BET equation derived for mixtures was compared with that of the widely used extended Langmuir equation using some selected binary adsorption isotherm data shown in the literature. The performance of the BET equation derived in this work was better than that of the extended Langmuir equation in the prediction of adsorbed phase concentrations and adsorbed amounts for the binary systems considered in this work.

In this study, experimental vapor pressures and densities of vapor and liquid phases versus tempe... more In this study, experimental vapor pressures and densities of vapor and liquid phases versus temperature were estimated using PC-SAFT equation. The estimated results were compared with those using PR equation of state. For the vapor phase densities, both equations well predicted the literature data. However, PC-SAFT equation showed better prediction capability for liquid phase densities. In the comparison of vapor-liquid equilibrium prediction capability for the binary systems of methane and ethane, PC-SAFT equation was better than the PR equation.

The research on production and application of hydrogen as an alternative energy in the future is ... more The research on production and application of hydrogen as an alternative energy in the future is being carried out actively. It hydrogen storage is necessary in order that user use hydrogen economically without much difficulty. Among the ways of hydrogen storage the method which is compressed hydrogen gas by high pressure is easier for application than other methods. In this study, we have been calculated gas with changing pressure and temperature variation of container wall through applied to mass and energy balance equation when compressing hydrogen by high pressure, and also to Beattie-Bridgeman equation of state for the kinetic of hydrogen. We will apply above date as a preliminary for design of hydrogen storage tank.

Adsorption Science and Technology, 2000

During the present reportinB period, experimental measurements were obtained on the solubility of... more During the present reportinB period, experimental measurements were obtained on the solubility of :arbon monoxide (CO) in selected hydrocarbons using our static type equilibri'_m ceil. Binary mixtures involving CO + n-eicosane (n-C20), n-octacosane _n-C28), and n-hexatricontane (n-C36) were studied at temperatures from 22_.2 to _23.2 K and pressures to 104 bar. These data were analyzed using the Zsave-Redlich-Kwong and Peng-Robinson equaUions of state. While a single inter=_c_ion parameter, Cij , describes the n-C20 and n-C28 measurements within 0.CO-in mole fraction over the full temperature range, :emperature dependent :arameters are required to adequately fit the n-C36 data. The present data are in reasonable agreement with the earlier measurements of Huang and cowor::ers: in _eneral, deviations within 0.004 in mole fraction are observed. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade n_me, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views j_AS_E R and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

Journal of Chemical & Engineering Data, 1996

The solubilities of hydrogen in benzene, naphthalene, phenanthrene, and pyrene were measured usin... more The solubilities of hydrogen in benzene, naphthalene, phenanthrene, and pyrene were measured using a static equilibrium cell over the temperature range from 323.2 to 433.2 K and pressures to 21.7 MPa. The uncertainty in these new solubility measurements is estimated to be less than 0.001 in mole fraction. The data were analyzed using the Soave-Redlich-Kwong (SRK) and Peng-Robinson (PR) equations

Journal of Chemical & Engineering Data, 1995

Industrial processes such as petroleum refining, coal conversion, enhanced oil recovery, and supe... more Industrial processes such as petroleum refining, coal conversion, enhanced oil recovery, and supercritical separation have created great demand for phase equilibrium data for asymmetric mixtures. The solubilities of carbon monoxide in benzene, naphthalene, phenanthrene, and pyrene were measured using a static equilibrium cell over the temperature range from 323.2 to 433.2 K and pressures to 23.3 MPa. The uncertainty in these solubility measurements is estimated to be less than 0.001 in mole fraction. The data were analyzed using the Soave-Redlich-Kwong (SRK) and Peng-Robinson (PR) equations of state (EOS). In general, the two equations represent the experimental data well over the complete temperature range when one interaction parameter is used for each binary system. Marginal improvements in equation of state predictions are realized when an additional interaction parameter is used.

Journal of Chemical & Engineering Data, 1995

The solubilities of hydrogen in decane, eicosane, octacosane, and hexatriacontane were measured u... more The solubilities of hydrogen in decane, eicosane, octacosane, and hexatriacontane were measured using a static equilibrium cell over the temperature range from 323.2 to 423.2 K and pressures to 17.4 MPa. The uncertainty in these new solubility measurements is estimated to be less than 0.001 in mole fraction. The data were analyzed using the Soave-Redlich-Kwong (SRK) and Peng-Robinson (PR) equations of state. In general, the two equations represent the experimental data well when a single interaction parameter is used for each binary system. The present data suggest that the interaction parameter, Cv, is highly temperature dependent, and that the use of a second interaction parameter, Dv, is not merited.

Chemical Engineering Communications, 1990

The surface excess and the heat of immersion in the adsorption from binary mixtures on the active... more The surface excess and the heat of immersion in the adsorption from binary mixtures on the active carbon surface were calculated in terms of the concentrations of adsorbed phase, the adsorption capacity ratios and the heats of immersion of pure compounds. The surface concentrations of binary mixtures were obtained from the thermodynamic model incorporating the intermolecular interactions between the surface and bulk molecules, and a model for surface activity coefficient considering the orientational states of adsorbed molecules, and the UNIQUAC equation. The calculated adsorption isotherms and heats of immersion were fair agreement with experiments of various binary isotherms.