In order to characterize gas separation membranes with single or mixed gases, Convergence developed a Gas Permeation pilot system. The unit allows the user to create your own tests and the system can take different feed gas compositions.
The gas separation system can be supplied with a Convergence test cell, hollow fiber module or you can fit your own. The system works with thin films and composite membranes (on a ceramic support)
Feed flow range: 0,16 nmL/min – 25 nL/min
Feed flow accuracy: < 0,5 % of reading + 0,1 % of FS
Permeate flow range: 0,16 nmL/min – 25 nL/min
Permeate flow accuracy: < 0,5 % of reading + 0,1 % of FS
Pressure range: 2 – 30 bar
Pressure accuracy: < 0,1 %
Temperature range: 0 – 120°C (different temperature ranges optional)
Dimensions: 70 x 26 x 38 cm
In order to characterize gas separation membranes with single or mixed gases, Convergence developed a gas permeation system. The unit allows the user to create their own customized feed gas composition and perform experiments at user defined flowrates, pressures and temperatures. Thanks to an integrated permeate side vacuum pump, solution-diffusion experiments can be performed using a pressure increment method.
The system is equipped with a heating system. Cooling options and evaporator systems for introducing humidity or VOC’s is available as a custom option.
On request the system is available in a bench top model (gas permeation system) or as a industrial sized pilot for full scale modules (gas permeation pilot).
The userfriendly software interface records flows, temperatures and pressures and allows the creation of individual test scripts. It also allows automatic calculation of permeability, permeance , stagecut, TMP (trans-membrane pressure) and other user defined calculations. The system allows you to attach all kinds of flat sheet membranes, tubular or hollow fiber membranes and thus makes it extremely flexible. A 47mm flat sheet membrane module is included.
The system is highly customizeable and can for example be designed to support operation at up to 250°C or allow the introduction of vapors through controlled evaporation and mixing. Different sensoring options such as dew point detectors or an automated GC are also available.
We contracted the Convergence team to build a custom gas permeation unit that allowed us to incorporate additional functionality so that we could more closely simulate actual environmental conditions for our air streams. We provided a specification for what we wanted and the Convergence metrology team developed an innovative solution that met all of our needs. The testing capability was fully automated with PID controls so that we could challenge our membranes with a mix of contaminants in the air stream at various concentrations precisely controlled throughout the test. The programming capability within the software enables us to develop programs to automate the different types of quality control testing that we would need to fully characterize the gas separation membranes at different conditions. Overall, the collaboration with Convergence was a great experience, as they are very easy to work with and have an excellent cross functional product development team.