Journal•ISSN: 0438-1157
Journal of Chemical Industry and Engineering
Chemical Industry Press
About: Journal of Chemical Industry and Engineering is an academic journal. The journal publishes majorly in the area(s): Heat transfer & Catalysis. Over the lifetime, 1427 publications have been published receiving 3456 citations.
Papers published on a yearly basis
Papers
More filters
Journal Article•
TL;DR: In this paper, the activation energy of decomposition reaction for methane hydrate was determined as 73.3?kJ·mol -1(methane), where the difference between gas fugacity at the equilibrium state and that at the actual decomposing state was calculated.
Abstract: The kinetics of methane hydrate decomposition was studied using Sapphire cell apparatus. Two different ways were adopted to measure the kinetic data of methane hydrate decomposition at temperatures from 269-279?K and pressures from 0.1-3.0?MPa.It was revealed that the decomposition rate of methane hydrate was proportional to the difference between gas fugacity at the equilibrium state and that at the actual decomposing state.A new kinetic model for methane hydrate decomposition was developed. It was shown that calculated results by the model were in good agreement with experimental data.The activation energy of decomposition reaction for methane hydrate was determined as 73.3?kJ·mol -1(methane).
133 citations
Journal Article•
TL;DR: In this article, the impact of surface diffusion, viscous flow and Knudsen diffusion on total diffusion was investigated by using the Maxwell-Stefan model, and the dependence of these impacts on temperature and pressure was also discussed.
Abstract: Activated carbon monolith is widely used as adsorbent to enhance the storage capacity of natural gas,which greatly inspires the investigation on adsorption dynamics of methane on this type of adsorbentsThe differential pressure permeation method was used to measure the surface diffusion coefficientThe impacts of Knudsen diffusion,viscous flow and surface diffusion on total diffusion were investigated by using the Maxwell-Stefan model,and the dependence of these impacts on temperature and pressure was also discussedAn empirical correlation was proposed to calculate the surface diffusion coefficientIn the ranges of experiment temperature and pressure,the adsorption dynamic process was dominated by surface diffusion,while Knudsen diffusion was also important at a low pressuresAs the pressure increased,the surface diffusion coefficient approached a constant value,however viscous flow kept continuously rising and contributing an important part to the total flux
53 citations
Journal Article•
TL;DR: In this article, the authors measured the solubility data of trans-ferulic acid in 8 binary systems of water and organic solvents, such as methyl acetate,ethyl acetate and butyl acetate.
Abstract: Ferulic acid was obtained from rice hull with the microwave-assisted extraction method.The solubility data of trans-ferulic acid in 8 binary systems of water and organic solvents,such as methyl acetate,ethyl acetate,butyl acetate,methanol,ethanol,dichloromethane and chloroform were measured from 273.15 K to 333.15 K.The empirical equation was adopted,and the solubilities calculated by the model were in good agreement with experimental data.
35 citations
Journal Article•
TL;DR: For describing the cluster phenomenon and its effect on drag force in gas-solid two-phase flow, the authors analyzed theoretically develped a model of gas solid drag force under consideration of cluster effects by using the energy minimization concept.
Abstract: For describing the cluster phenomenon and its effect on drag force in gas-solid two-phase flow,the paper analyzed theoretically develped a model of gas-solid drag force in Eulerian frame under consideration of cluster effects by using the energy minimization concept.Comparing with the existing models,the new model can describe the interaction between gas phase and particle phase reasonably,and avoid error caused by the inaccurate experiential coefficient.In the numerical simulation of a CFB apparatus,the result of the new model agrees with the experiment data well,so it shows the remarkable advantage or simulation of dense gas-solid two-phase flow.
30 citations
Journal Article•
TL;DR: In this paper, the efficiency of producing gas from natural gas hydrate (NGH) under thermal stimulation is treated as a moving-boundary problem based on a mathematical model assuming that dissociation of hydrate in the porous media takes place in constant temperature boundary condition, the analytical temperature distributions in dissociated and undissociated zones were solved, and thermal efficiency and energy efficiency were derived.
Abstract: In order to evaluate the efficiency of producing gas from natural gas hydrate (NGH), NGH dissociation under thermal stimulation is treated as a moving-boundary problemBased on a mathematical model assuming that dissociation of hydrate in the porous media takes place in constant temperature boundary condition,the analytical temperature distributions in dissociated and undissociated zones were solved, and thermal efficiency and energy efficiency were derivedA comparison of hot water injection case and brine injection case for the same heat injection rate showed higher thermal and energy efficiency for the brine case than the hot water caseThermal efficiency was commonly 40%—70% During dissociation of hydrate by injecting 300—450 K, 0—15%(mass) hot brine,energy efficiency varied between 74% and 113% From this point of view, hot brine injection is a feasible and economical way of NGH production
27 citations