Polymer membrane separates hydrocarbons, offering alternative to distillation
Polymer membrane separates hydrocarbons, offering alternative to distillation
www.chemistryworld.com
Polymer membrane separates hydrocarbons, offering alternative to distillation
Last time I heard about reverse osmosis it was about water purification, exploiting that water molecules are tiny and ions + organic molecules are bulky. I'm glad to see the tech finding its way into other processes though - specially oil refining, the current solution (fractional distillation) is basically "use lots of energy to boil it, then use even more energy to condensate it".
That's quite smart.
I'm not as confident. Refining columns work reliably for decades requiring just a couple trays being replaced every now and then. RO membranes are generally fickle, need a lot of babying and require complete replacement every couple years.
There's also energy integration opportunities in a refinery to use the "waste" heat to preheat feeds and of course the feeds precool the hot top stream. Being a highly commoditized market pushes companies to drive three bottom line down.
I think we'll only see meaningful impact by phasing out of fossil fuels, not making their manufacture incrementally more efficient.
I'm aware some energy is recycled, and I do think we (humankind as a whole) need to phase fossil fuels out. But even then, we'll still need petrochemicals - and I'm hoping this sort of membrane eventually makes them cheaper, when used instead or alongside fractioning columns.