scholarly journals A Catalytically Active Membrane Reactor for Fast, Highly Exothermic, Heterogeneous Gas Reactions. A Pilot Plant Study

1995 ◽  
Vol 34 (3) ◽  
pp. 763-772 ◽  
Author(s):  
Jan W. Veldsink ◽  
Geert F. Versteeg ◽  
Wim P. M. van Swaaij
Keyword(s):  
Pilot Plant ◽  
Membrane Reactor ◽  
Active Membrane ◽  
Catalytically Active ◽  
Gas Reactions ◽  
Pilot Plant Study

A genuine in-situ water removal at a molecular lever by an enhanced esterification-pervaporation coupling in a catalytically active membrane reactor

2017 ◽  
Vol 323 ◽  
pp. 434-443 ◽  
Author(s):  
Weihua Qing ◽  
Jiaqian Wu ◽  
Ning Chen ◽  
Lele Liu ◽  
Yajun Deng ◽  
...  
Keyword(s):  
Membrane Reactor ◽  
Water Removal ◽  
Active Membrane ◽  
Catalytically Active

Lipase immobilized catalytically active membrane for synthesis of lauryl stearate in a pervaporation membrane reactor

2014 ◽  
Vol 172 ◽  
pp. 16-21 ◽  
Author(s):  
Weidong Zhang ◽  
Weihua Qing ◽  
Zhongqi Ren ◽  
Wei Li ◽  
Jiangrong Chen
Keyword(s):  
Membrane Reactor ◽  
Pervaporation Membrane ◽  
Active Membrane ◽  
Catalytically Active

Conversion enhancement for acetalization using a catalytically active membrane in a pervaporation membrane reactor

2017 ◽  
Vol 313 ◽  
pp. 1396-1405 ◽  
Author(s):  
Weihua Qing ◽  
Jiangrong Chen ◽  
Xiaonan Shi ◽  
Jiaqian Wu ◽  
Jiayu Hu ◽  
...  
Keyword(s):  
Membrane Reactor ◽  
Pervaporation Membrane ◽  
Active Membrane ◽  
Catalytically Active

scholarly journals A catalytically active membrane reactor for fast, exothermic, heterogeneously catalysed reactions

1992 ◽  
Vol 47 (9-11) ◽  
pp. 2939-2944 ◽  
Author(s):  
J.W. Veldsink ◽  
R.M.J. van Damme ◽  
G.F. Versteeg ◽  
W.P.M. van Swaaij
Keyword(s):  
Membrane Reactor ◽  
Active Membrane ◽  
Catalytically Active

Analysing organic micropollutant accumulation in closed loop FO–RO systems: A pilot plant study

2021 ◽  
Vol 626 ◽  
pp. 119182
Author(s):  
Arnout D’Haese ◽  
Juan Carlos Ortega Bravo ◽  
Danny Harmsen ◽  
Lynn Vanhaecke ◽  
Arne R.D. Verliefde ◽  
...  
Keyword(s):  
Pilot Plant ◽  
Closed Loop ◽  
Pilot Plant Study

Waste lubricating oil rerefining by extraction-flocculation. 3. A pilot plant study

1991 ◽  
Vol 30 (11) ◽  
pp. 2449-2456 ◽  
Author(s):  
M. Alves dos Reis
Keyword(s):  
Pilot Plant ◽  
Lubricating Oil ◽  
Pilot Plant Study

Oil refinery hazardous effluents minimization by membrane filtration: An on-site pilot plant study

2016 ◽  
Vol 181 ◽  
pp. 762-769 ◽  
Author(s):  
Bruno Santos ◽  
João G. Crespo ◽  
Maria António Santos ◽  
Svetlozar Velizarov
Keyword(s):  
Pilot Plant ◽  
Membrane Filtration ◽  
Oil Refinery ◽  
Pilot Plant Study

Fluid Mechanics Research and Engineering Application in Non-Newtonian Fluid Systems

1964 ◽  
Vol 4 (01) ◽  
pp. 56-66 ◽  
Author(s):  
L.L. Melton ◽  
W.T. Malone
Keyword(s):  
Newtonian Fluid ◽  
Pilot Plant ◽  
Scale Up ◽  
Engineering Application ◽  
Unsteady State ◽  
Hydraulic Behavior ◽  
Circular Pipes ◽  
Fluid Systems ◽  
Fluid Properties ◽  
Pilot Plant Study

Abstract Fluid mechanics research conducted with non-Newtonian fluid systems now permits prediction of the behavior of these fluid systems in both laminar and turbulent modes of flow through circular pipes. Present work concerns non-Newtonian fluid systems currently used in the hydraulic fracturing process. During fracturing treatments, an unsteady-state condition may frequently be encountered arising from' the reaction rate of a chemical additive. This condition must be evaluated in order to predict the actual behavior of a particular fluid during field application. Design and operation of the apparatus used to determine fluid-flow behavior permit obtaining data under such non-equilibrium conditions. This paper shows methods used to obtain rheology measurements, develop hydraulic relationships and evaluate chemical reactions producing unsteady-state conditions. Engineering application of this research is illustrated by employing measured rheological values and developed hydraulic relationships to produce frictional pressure loss (psi/100 ft) vs flow rate (bbl/min) charts of common tubing and casing sizes for an example fracturing fluid. How these charts and chemical reaction rate information are then combined to predict actual turbulent hydraulic behavior during unsteady-state field conditions is also discussed. Introduction Many fluids used in hydraulic fracturing contain chemical additives which impart non-Newtonian fluid properties that may drastically alter their hydraulic behavior. Equally drastic alteration in wellhead pressure, injection rate and hydraulic horsepower requirement may result from these fluid properties. Prior research conducted to relate non-Newtonian fluid properties with hydraulic behavior has not as yet produced a universal relationship, particularly for the turbulent flow region. Which of the many possible non-Newtonian fluid properties is responsible has not been conclusively established. A systematic description, suggested by Metzner, of the many possible non-Newtonian fluid properties exhibited by real - fluid behavior, and a current discussion of theoretical and applied aspects of non-Newtonian fluid technology can be found in Handbook of Fluid Dynamics. Little or no research has previously been attempted with fluids exhibiting time - dependent properties. Addition of chemicals during a fracturing treatment is often accomplished by continuously mixing and displacing the fluid. This produces a time-dependent effect or unsteady-state condition while the fluid is progressing through surface and wellbore conductors. This condition is due to solution or chemical reaction of the additive. Considerable departure from conventional methods of obtaining and interpreting data was found necessary to consider these conditions. Therefore methods were developed to obtain hydraulic behavior information under these complex, unsteady-state conditions. Relationships presented in this paper to predict hydraulic behavior of non-Newtonian fluids in circular pipes were obtained by constructing and operating a small pipeline apparatus in the manner of a pilot-plant study. These relationships are suggested as scale-up equations and are not proposed as fundamental rheological parameters. While perhaps deficient from a fundamental research viewpoint, a pilot-plant study does permit the determination and convenient evaluation of variables pertinent to a process. A pilot-plant study can result in a valid engineering application procedure even when fundamental relationships are still undefined. An excellent series of articles by Bowen has appeared in the chemical engineering literature. These give a thorough review of proposed hydraulic relationships and their limitations for non-Newtonian fluid behavior in circular pipes. A graphical method is presented to scale up data for a fluid exhibiting an anomalous hydraulic behavior in the turbulent flow region. Considerable assistance has been obtained from these articles to interpret the anomalous behavior noted during this investigation. These articles also provided assurance that a pilot plant is a practical approach to evaluate the hydraulic behavior of non-Newtonian fracturing fluids. SPEJ P. 56ˆ

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