Permeable membrane diaphragm of different layers for...

Details Permeable membrane diaphragm of different layers for... Permeable membrane diaphragm of different layers for...

2007-07-10

2007-07-10

Bell, Bruce F. (Department: 1746)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C521S027000, C210S500100, C210S500360, C210S500380

Reexamination Certificate

active

09889574

ABSTRACT:
The present invention relates to a permeable membrane diaphragm of different layers for electrolytic cell, especially for chloro-alkali electrolytic cell. The diaphragm is asymmetric, which comprises at least two layers: a flow-controlling permeable layer comprising micro-porous fluoropolymer, especially PTFE, and a diffusion-restricting permeable layer comprising porous film, sheet or cloth made of anticorrosive materials, preferably polypropylene. The flow-controlling layer is mounted near the anode, and the diffusion-restricting layer is mounted near the cathode. The mean pore diameter of the diffusion-restricting layer is at least 5 times more than that of the flow-controlling layer and the thickness of the diffusion-restricting layer is at least 1 times more than that of the flow-controlling layer. The pore diameter of said flow-controlling layer ranges from 0.1–2.0 μm, and its thickness is 0.03–0.2 mm. The pore diameter of said diffusion-restricting layer ranges from 5–50 μm, and its thickness is 0.3–2 mm. The above two layers can also be made of more than one similar thinner membranes respectively.

REFERENCES:
patent: 4921587 (1990-05-01), Dong et al.
patent: 5183545 (1993-02-01), Branca et al.

Affiliated with

Also associated with

Rating

Permeable membrane diaphragm of different layers for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Permeable membrane diaphragm of different layers for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permeable membrane diaphragm of different layers for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3803255