Browsing Chemical Engineering by Title
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Analysis of an annular finned pyrolyser-II
(2000)Experiments are conducted in a pyrolyser with eight fins with rice husk and coffee husk. Model equations for the heat transfer and pyrolysis processes, considering wall heat resistance at the pyrolyser and fin walls, are ... -
Analysis of annular finned pyrolyser
(1998)An annular finned pyrolyser is designed for clean and pollution-free combustion of coarse type biomass materials. Experiments are performed with pyrolysers of two different sizes with 8 and 12 radial fins, respectively. ... -
Analysis of modified surface force pore flow model with concentration polarization and comparison with Spiegler–Kedem model in reverse osmosis systems
(2004)The Modified Surface Force Pore Flow (MD-SF-PF) model is used for predicting the performance of the sodium chloride–water and sodium sulphate–water reverse osmosis systems. Unlike the previous analysis available in literature ... -
Assessment of availability and costs of some agricultural residues used as feedstocks for biomass gasification and briquetting in india
(1998)An assessment of the availability of agricultural residues as raw materials for biomass gasifisication and briquetting in India has been made with due consideration to their seasonal and geographical availability dimensions. ... -
Biomass gasifier based institutional cooking in India: a preliminary financial evaluation
(1999)The unit cost of thermal energy for biomass gasifier-based institutional cooking systems has been estimated and compared with that for LPG and coal-based institutional cooking options. It works out to Rs 0.37/MJ for a 29 ... -
Biosorption of monovalent and divalent ions on baker's yeast
(2002)Biosorption of monovalent ions Na+ and K+, by deactivated protonated yeast (Saccharomyces cerevisiae) at controlled pH, was compared with biosorption of divalent ions Ca2+ and Mg2+ to help to understand the underlying ... -
Biosorption of nickel(II) ions on Baker's yeast
(2003)The biosorption of nickel(II) ions by deactivated protonated yeast was investigated with respect to the initial pH and initial metal ion concentration. The kinetics of sorption was also followed based on the amounts of ... -
Catalytic conversion of methanol to gasoline range hydrocarbons
(2004)The catalytic conversion of methanol to hydrocarbons of gasoline range has been studied over HZSM-5, ZnO/HZSM-5, CuO/HZSM-5 and CuO/ZnO/HZSM-5. The selectivity of methanol conversion to hydrocarbon has been found to be a ... -
Catalytic pyrolysis of n-heptane on unpromoted and potassium promoted calcium aluminates
(2002)Steam pyrolysis of n-heptane has been studied over different calcium aluminates and potassium impregnated calcium aluminate in a fixed bed reactor at atmospheric pressure. Various calcium aluminate catalysts were prepared ... -
Catalytic wet oxidation of phenol in a trickle bed reactor
(2004)Catalytic liquid phase oxidation of aqueous phenol was studied in a pilot plant trickle bed reactor using a copper oxide catalyst supported on alumina. Catalysts were prepared by impregnating CuO on alumina extrudates and ... -
Deep bed grain drying modeling
(2002)The major source of food for humans and for animals is cereal grains. The production of cereal grains per acre has been increasing rapidly. Harvesting, handling and drying of grains have become necessary for economically ... -
Design and parameter estimation of reverse osmosis systems
(1992)A coupled set of nonlinear algebraic and ordinary differential equations is solved numerically for design of reverse osmosis systems where the membrane transport is governed by three-parameter models. The predictions of ... -
Design of packed towers for absorption and desorption of carbon dioxide using hot promoted K2CO3 solution
(1991)The mathematical model developed for the design of a packed column for the absorption of carbon dioxide in hot promoted potassium carbonate solution (Gas Sep Purif (1989) Vol 3 p 152; (1990) Vol 4 p 58) is extended to take ... -
Dynamic behaviour of a semibatch non-isothermal gas-liquid reactor
(1991)A dynamic model to predict transient temperature profiles of a nonisothermal semibatch gas-liquid reactor was developed. The enhancement factor for non-isothermal gas absorption was calculated by extending the model of ... -
Effect of a new high porosity packing on hydrodynamics and mass transfer in bubble columns
(2004)The experimental study is aimed at investigating the effect of a high porosity stainless steel packing (solid fraction being equal to 0.5%) and the influence of alcohol (0.5% volume) addition on the hydrodynamics and the ... -
Effect of angle of inclination on liquid-phase controlled mass transfer from a gas slug
(1995)Abstract--The effect of angle of inclination on the rise velocity of a single gas slug and overall liquid-phase mass transfer coefficient (KLA) have been measured for a CO2 bubble in a closed tube. Water and two aqueous ... -
Effect of calcium ion and montmorillonite clay on bitumen displacement by water on a glass surface
(2004)Experiments were conducted to study the effect of calcium ion and montmorillonite clay on bitumen displacement by an aqueous phase on a glass surface. Upon exposure to an aqueous environment containing calcium ion and ... -
Effect of coal properties on the specific coal consumption in a typical thermal power station in India
(1994)The effect of various coal properties like ash content, moisture content, fixed carbon and calorific value on specific coal consumption in a typical thermal power station in India is analysed. It is observed that the ... -
Effect of feed atomization on FCC performance: simulation of entire unit
(2003)Entire fluid catalytic cracking (FCC) unit, comprising of a riser and a regenerator, is simulated by integrating FCC riser model presented in our earlier work (Chem. Eng. Sci. 56 (2001) 4489) with an FCC regenerator model. ... -
Energy and chemicals from rice husk
(1995)Rice husk is the only agro residue having maximum siliceous ash content and available in dry form. The present work on rice husk describes processes for producing controlled carbon-silica mixtures in amorphous form, ...