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Effect Of Liquid Viscosity On Liquid Film Mass Transfer For Packings
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Book Synopsis Effect of Liquid Viscosity on Liquid Film Mass Transfer for Packings by : Di Song
Download or read book Effect of Liquid Viscosity on Liquid Film Mass Transfer for Packings written by Di Song and published by . This book was released on 2017 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of liquid viscosity ([mu]L) on liquid film mass transfer for packings was investigated in a pilot-scale column with 0.43 m (16.8 in) ID and 3 m (10 ft) maximum packing. Mass transfer area (ae) of three structured packings, one random packing, and one hybrid packings was measured by chemical absorption of CO2 into dilute (~ 0.1 mol/L) NaOH. Liquid film mass transfer coefficient (kL) of eight structured packings, one random packing, and one hybrid packing was measured by air stripping toluene from water. Liquid viscosity was varied 0.8-70 mPa·s by adding 0-89 wt % glycerol to water in one ae and nine kL experiments. In the experiments, the liquid load was varied 6-75 m3/m2·hr (2.5-30 gpm/ft2), and the gas rates were 0.6, 1, and 1.5 m/s (180, 300, and 450 ACFM). The models of ae,packing and kL were developed based on data for 39 packings from this work and the SRP air-water column database. The model of the gas film mass transfer coefficient, kG, was developed based on data for 20 packings in the SRP air-water database. The secondary (wall and end) effect of ae was corrected in the area model. A taller packing bed consistently gave smaller kL due to maldistribution. Liquid viscosity does not have a significant effect on ae. The kL depends on [mu]L to the -0.75 power, in which the -0.4 is the direct influence on the liquid turbulence, and -0.35 is the indirect effect via diffusivity of the mass transfer species. The effect of [mu]L on kL is the same for different packing geometry and types. To prepare for the pilot-scale area experiment with glycerol, reaction kinetic model of CO2 and hydroxide in aqueous glycerol was developed based on the wetted-wall column (WWC) experiments.
Book Synopsis Effect of Liquid Viscosity on Mass Transfer Area and Liquid Film Mass Transfer Coefficient for GT-OPTIMPAK 250Y. by :
Download or read book Effect of Liquid Viscosity on Mass Transfer Area and Liquid Film Mass Transfer Coefficient for GT-OPTIMPAK 250Y. written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Packed Bed Columns by : Nikolai Kolev
Download or read book Packed Bed Columns written by Nikolai Kolev and published by Elsevier. This book was released on 2006-08-08 with total page 709 pages. Available in PDF, EPUB and Kindle. Book excerpt: Packed bed columns are largely employed for absorption, desorption, rectification and direct heat transfer processes in chemical and food industry, environmental protection and also processes in thermal power stations like water purification, flue gas heat utilization and SO2 removal. These Separation processes, are estimated to account for 40%-70% of capital and operating costs in process industry. Packed bed columns are widely employed in this area. Their usage also for direct heat transfer between gas and liquid, enlarge their importance. They are the best apparatuses, from thermodynamical point of view, for mass and heat transfer processes between gas and liquid phase. Their wide spreading is due to low capital investments and operating costs. Since 1995 there has not been published a specialised book in this area, and this is a period of quick development of packed columns. Packed Bed Columns reflects the state of this field including the author's experience on creating and investigating of new packings, column internals and industrial columns. - Considers the theories of mass transfer processes and shows how they help the construction of highly effective packings - Complete information about the performance characteristics of different modern types of highly effective packings - Considers the models for calculation and areas of their application
Book Synopsis Mass Transfer Coefficients and Effective Area of Packing by : Chao Wang
Download or read book Mass Transfer Coefficients and Effective Area of Packing written by Chao Wang and published by . This book was released on 2015 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effective mass transfer area (a [subscript e]), liquid film mass transfer coefficient (k [subscript L]), and gas film mass transfer coefficient (k [subscript G]) of eleven structured packings and three random packings were measured consistently in a 0.428 m packed column. Absorption of CO2 with 0.1 gmol/L NaOH with 3.05 m packing was used to measure a [subscript e], while air stripping of toluene from water with 1.83 m packing was used to measure k [subscript L], and absorption of SO2 with 0.1 gmol/L NaOH with 0.51 m packing was used to measure k [subscript G]. The experiments were conducted with liquid load changing from 2.5 to 75 m3/(m2*h) and gas flow rate from 0.6 to 2.3 m/s. Packings with surface area from 125 to 500 m2/m3 and corrugation angle from 45 to 70 degree were tested to explore the effect of packing geometries on mass transfer. The effective area increases with packing surface area and liquid flow rate, and is independent of gas velocity. The packing corrugation angle has an insignificant effect on mass transfer area. The ratio of effective area to surface area decreases as surface area increases due to the limit of packing wettability. A correlation has been developed to predict the mass transfer area with an average deviation of 11%. [Mathematical equation]. The liquid film mass transfer coefficient is only a function of liquid velocity with a power of 0.74, while the gas film mass transfer coefficient is only a function of gas velocity with a power of 0.58. Both k [subscript L] and k [subscript G] increase with packing surface area, and decrease with corrugation angle. A new concept, Mixing Point Density, was introduced to account for effect of the packing geometry on k[subscript L] and k [subscript G]. Mixing Point Density represents the frequency at which liquid film is refreshed and gas is mixed. The mixing point density can be calculated by either packing characteristic length or by surface area and corrugation angle: [mathematical equation]. The dimensionless k [subscript L] and k [subscript G] models can then be developed based on the effects of liquid/gas velocity, mixing point density, packing surface area: [mathematical equation] [mathematical equation]. Mi is the dimensionless form of Mixing Point Density (M), which is M divided by a [subscript P]3. Because Mi is only a function of corrugation angle ([Theta]), it is a convenient transformation to represent the effect of [Theta] on mass transfer parameters. An economic analysis of the absorber was conducted for a 250 MW coal-fired power plant. The optimum operating condition is between 50 to 80 % of flooding, and the optimum design is to use packing with 200 to 250 m2/m3 surface area and high corrugation angle (60 to 70 degree). The minimum total cost ranges from $4.04 to $5.83 per tonne CO2 removed with 8 m PZ.
Book Synopsis The Effect of Concentration on the Liquid Film Mass Transfer Coefficient by : John W. Tierney
Download or read book The Effect of Concentration on the Liquid Film Mass Transfer Coefficient written by John W. Tierney and published by . This book was released on 1951 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Parameter Estimation of Liquid Film Mass Transfer Coefficient and Effective Interfacial Area for Random and Structured Packings by : Xinsheng Ji
Download or read book Parameter Estimation of Liquid Film Mass Transfer Coefficient and Effective Interfacial Area for Random and Structured Packings written by Xinsheng Ji and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Concentration on the Mass Transfer Coefficient in the Liquid Film by : Marvin Baker Schaffer
Download or read book The Effect of Concentration on the Mass Transfer Coefficient in the Liquid Film written by Marvin Baker Schaffer and published by . This book was released on 1956 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid-film Mass Transfer Coefficients for Three Different Types of Plastic Packings by : Sven-Gunnar Trulsson
Download or read book Liquid-film Mass Transfer Coefficients for Three Different Types of Plastic Packings written by Sven-Gunnar Trulsson and published by . This book was released on 1976 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mass Transfer Area of Structured Packing by : Robert Edison Tsai
Download or read book Mass Transfer Area of Structured Packing written by Robert Edison Tsai and published by . This book was released on 2010 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mass transfer area of nine structured packings was measured as a function of liquid load, surface tension, liquid viscosity, and gas rate in a 0.427 m (16.8 in) ID column via absorption of CO2 from air into 0.1 mol/L NaOH. Surface tension was decreased from 72 to 30 mN/m via the addition of a surfactant (TERGITOL[trademark] NP-7). Viscosity was varied from 1 to 15 mPa·s using poly(ethylene oxide) (POLYOX[trademark] WSR N750). A wetted-wall column was used to verify the kinetics of these systems. Literature model predictions matched the wetted-wall column data within 10%. These models were applied in the interpretation of the packing results. The packing mass transfer area was most strongly dictated by geometric area (125 to 500 m2/m3) and liquid load (2.5 to 75 m3/m2·h or 1 to 30 gpm/ft2). A reduction in surface tension enhanced the effective area. The difference was more pronounced for the finer (higher surface area) packings (15 to 20%) than for the coarser ones (10%). Gas velocity (0.6 to 2.3 m/s), liquid viscosity, and channel configuration (45° vs. 60° or smoothed element interfaces) had no appreciable impact on the area. Surface texture (embossing) increased the area by 10% at most. The ratio of effective area to specific area (a[subscript e]/a[subscript p]) was correlated within limits of "13% for the experimental database: [mathematical formula]. This area model is believed to offer better predictive accuracy than the alternatives in the literature, particularly under aqueous conditions. Supplementary hydraulic measurements were obtained. The channel configuration significantly impacted the pressure drop. For a 45°-to-60° inclination change, pressure drop decreased by more than a factor of two and capacity expanded by 20%. Upwards of a two-fold increase in hold-up was observed from 1 to 15 mPa·s. Liquid load strongly affected both pressure drop and hold-up, increasing them by several-fold over the operational range. An economic analysis of an absorber in a CO2 capture process was performed. Mellapak[trademark] 250X yielded the most favorable economics of the investigated packings. The minimum cost for a 7 m MEA system was around $5-7/tonne CO2 removed for capacities in the 100 to 800 MW range.
Book Synopsis Liquid Phase Resistance by : Bruce Albert Khoury
Download or read book Liquid Phase Resistance written by Bruce Albert Khoury and published by . This book was released on 1970 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid-liquid Systems by : N. N. Kulov
Download or read book Liquid-liquid Systems written by N. N. Kulov and published by Nova Publishers. This book was released on 1996 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid-Liquid Systems
Book Synopsis Parameter Estimation of Liquid Film Mass Transfer Coefficient and Effective Interfacial Area for Random and Structured Packings by :
Download or read book Parameter Estimation of Liquid Film Mass Transfer Coefficient and Effective Interfacial Area for Random and Structured Packings written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Viscosity on Interfacial Area and Liquid Mass Transfer Coefficient for Gas Absorption in Agitated Vessels by : Albert Francis Furtado
Download or read book Effects of Viscosity on Interfacial Area and Liquid Mass Transfer Coefficient for Gas Absorption in Agitated Vessels written by Albert Francis Furtado and published by . This book was released on 1980 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mass Transfer in a Rising Bubble by : George Baxter Humphreys
Download or read book Mass Transfer in a Rising Bubble written by George Baxter Humphreys and published by . This book was released on 1953 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gas-liquid Reactions by : P. V. Danckwerts
Download or read book Gas-liquid Reactions written by P. V. Danckwerts and published by . This book was released on 1970 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Heat and Mass Transfer: Mass transfer and reactor design by : Nicholas P. Cheremisinoff
Download or read book Handbook of Heat and Mass Transfer: Mass transfer and reactor design written by Nicholas P. Cheremisinoff and published by . This book was released on 1986 with total page 1544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Surface Tension and Wettability on Liquid Film Mass Transfer Coefficients in a Packed Column by : Patrick H-Sing Au-Yeung
Download or read book The Effects of Surface Tension and Wettability on Liquid Film Mass Transfer Coefficients in a Packed Column written by Patrick H-Sing Au-Yeung and published by . This book was released on 1988 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
