Imaging wet gas separation process by capacitance tomography

2002 ◽  
Author(s):  
Wuqiang Yang ◽  
Van T. Nguyen ◽  
Marco Betting ◽  
Athanasios Chondronasios ◽  
Steve Nattras ◽  
...  
Keyword(s):  
Gas Separation ◽  
Separation Process ◽  
Wet Gas ◽  
Capacitance Tomography

Gas separation process: analysis of composite membranes based on alumina/PVDF at lower power consumption energy

2012 ◽  
Vol 51 (1-3) ◽  
pp. 606-608 ◽  
Author(s):  
Dionísio da Silva Biron ◽  
Camila Cherubini ◽  
Venina dos Santos ◽  
Lucas Gomes ◽  
Andréa Schneider ◽  
...  
Keyword(s):  
Power Consumption ◽  
Gas Separation ◽  
Process Analysis ◽  
Composite Membranes ◽  
Separation Process ◽  
Lower Power ◽  
Consumption Energy

Adaptive Calibration of a Capacitance Tomography System for Imaging Water Droplets Distribution

Volume 1 ◽  
2004 ◽  
Author(s):  
W. Q. Yang ◽  
A. Chondronasios ◽  
S. Nattrass ◽  
V. T. Nguyen ◽  
M. Betting ◽  
...  
Keyword(s):  
Operating Conditions ◽  
Electrode Pair ◽  
Liquid Droplets ◽  
Separation Processes ◽  
Low Concentration ◽  
Droplet Distribution ◽  
Adaptive Calibration ◽  
Wet Gas ◽  
Reference Measurements ◽  
Capacitance Tomography

A highly-sensitive electrical capacitance tomography (ECT) system based on an HP4284 impedance analyser has been developed and used to quantify low concentration multiphase flows in wet gas separation processes. The system hardware provides high accuracy (0.05%) and high resolution (10−17 F). The sensor was calibrated in an environmental chamber with solid samples of known permittivity over ranges of temperature and humidity. Adaptive calibration and adjacent electrode pair correction techniques were applied to image very low concentration profiles. This paper describes the techniques used and presents the experimental results obtained from a test flow rig called Twister, which has been designed to separate liquid droplets from wet gas streams. The test results over a range of operating conditions (20% to 95% humidity) demonstrate that the ECT system is capable of reconstructing clear images of the droplet distribution inside Twister. Changes as small as 1 gWater/kgAir in the droplets form liquid were detectable. It has also shown that the concentration of the condensable phase can be estimated quantitatively within 20% in comparison with the reference measurements.

Synthesis and Formation of Gas Separation Membranes Based on Polyalkylenesiloxanes

2019 ◽  
Vol 816 ◽  
pp. 233-237
Author(s):  
Ilya L. Borisov ◽  
N.V. Ushakov ◽  
E.A. Grushevenko ◽  
E.S. Finkel’stein ◽  
V.V. Volkov
Keyword(s):  
Gas Separation ◽  
Separation Process ◽  
Membrane Gas Separation ◽  
Gas Separation Membrane ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Gas Transport Properties ◽  
Separation Membrane ◽  
Transport Component ◽  
The Ideal

The membrane gas separation is currently a competitive separation process. The heart of the membrane gas separation process is the membrane, more precisely the material from which it is made. The search for a selective material to develop a gas separation membrane is an important task presently. Membrane materials with advantageous impact of sorption transport component is a good material for the selective fractionating С1-С4 hydrocarbons with obtaining methane fraction and C3+ fraction. Such materials are polyalkylenesiloxanes. In this work, the optimal concentration of a curing agent (tetraethoxysilane) was defined (5%). Such concentration is necessary for obtaining constant membrane film with high gas transport properties: the permeability coefficient for n-butane is 7400; the ideal selectivity of n-butane/methane is 25.5.

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