Transport properties of a mixture of permanent gases and light hydrocarbons through the polytetrafluoroethylene capillary tubes of a GP-100 gas extractor
✍ Scribed by Roland Gilbert; Hong Phuong Nguyen; Jocelyn Jalbert; Sylvie Charbonneau
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 172 KB
- Volume
- 236
- Category
- Article
- ISSN
- 0376-7388
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✦ Synopsis
The dependence with time of the permeated gases in the cavity of a probe equipped with a membrane made of a plurality of polytetrafluoroethylene (PTFE) capillary tubes was studied under a gas/membrane/gas configuration by performing tests at predetermined intervals of time in a range of 0-40 • C. The tests carried out at atmospheric pressure on both sides of the tubes with a multicomponent gas in the shell side of very low H 2 , O 2 , N 2 , CO, CH 4 , CO 2 , C 2 H 2 , C 2 H 4 , C 2 H 6 and C 3 H 8 partial pressures in argon were used to establish the permeability coefficients (P i ), the permeation apparent activation energies (E p ) and the time required by each species to reach 99% of the equilibrium concentration (t 99 ). At room temperature, the permeability coefficients computed from the slope of the steady-state transmission rate portion of the exponential growth function fitting the experimental data points showed the highest value for H 2 (12.1 Barrer) and the lowest value for C 3 H 8 (0.27 Barrer), with the other species inserted in between in the following order: P H