Category Archives: Technical Support

Three Decades of Nitrogen.

PRISM Membranes is proud of the durability of the membrane separation products. Our customers depend on the PRISM Membrane equipment to provide a steady supply of nitrogen for oxygen-sensitive processes or to provide a safe working environment for flammable and explosive materials.

We received a call from the shop at one of the Northrup-Grumman facilities in Corinne, Utah, which was having some difficulties getting the nitrogen flow that was originally specified in their PRISM Membrane nitrogen system. The unit was due for some maintenance and it appeared that the membrane bundles needed to be replaced. We dispatched service techs to service a PRISM Nitrogen generator.

Investigating the serial numbers of the separators in question, it was obvious that the system was older, but the serial numbering didn’t exactly match the numbering format recorded in the Air Products archives. A little more detective work revealed the reason why – the system was constructed in the year 1992 and the separators were built by Permea, the business that was originally owned by Monsanto. The Permea business unit became part of the Air Products corporation around the same time so that is one of the last units manufactured under the old company name.

Permea Separator Label
Permea Separator Label from 1992

After 28 years on the job, the membrane fibers finally succumbed to all the effects of being fed by an oil-free compressor which was used to supply multiple departments on the campus. New fiber bundles were installed, and the system is generating nitrogen for everyone that needs it for their tasks.

We are penciling in the year 2048 on our service department schedule to update this set of membranes.

It’s Not “Who You Know”…

Congratulations to our Dr. Erin Sorensen, New Products and Applications Manager at PRISM Membranes, who was selected to present at the 2018 Society of Women Engineers conference at the Minneapolis Convention Center.erin-sorenson-speaker

Doctor Sorensen presented a “lightning talk” about influencing without authority. Her presentation provides a guide for gaining support for projects even though you may be delegating tasks to people who have no direct reporting connection to you. For more information, get the downloadable influence-without-authority handout. It’s a great reference for anyone in business who works in teams.

The Society of Women Engineers 2018 conference was held at the MCC October 18th through the 20th with a host of workshops and career tools for women in engineering roles. The theme of this year’s event was about breaking boundaries for women engineers at every stage of their careers.

Customized Membrane Manufacturing

variety of Membranes2We provide the widest product range of membrane separators on the market, but sometimes there are still specific applications that require something different. Your membrane application might be restricted by physical dimensions, or shell materials… but don’t worry, we can manufacture customized membrane products. We’ve done this many times for the transportation industry when weight limits or government regulations required specific membrane product changes. Just tell us what you need!



Avoiding Membrane Failure

Prism Membrane separators are known for their reliability and longevity. Proper operation can help extend the membrane life even longer.  Here are two failure modes for membrane separators and what you can do to prevent them:

1. Contamination- liquids or solid particulates from the feed gas plug the membrane fiber and reduce membrane performance.
Avoid contamination by selecting and maintaining the proper upstream filters. Strategic system design and process control also help.

2. Broken Membrane Fiber-the hollow polymer fiber cracks and results in a loss of product or excessive air consumption.
Avoid broken fibers by operating the membrane within its temperature and pressure limits. Inserting fittings too deep, long term ozone exposure, and excessive cycling may cause fiber breakage too.

Prism Membrane customers are encouraged to utilize free technical support to achieve a successful system design which minimizes premature membrane failure.