Spread the Word

New Energy saving technologies in the realm of evaporators and distillation equipment should interest many people around the world. After all, evaporation and distillation are number one and two among unit processes in terms of energy consumption. If there exists a global will to address the threats of greenhouse gas and fossil fuel dependency, no stone should be left unturned in the quest for reductions in our global consumption of energy; but extra attention should be given to the Big Users: evaporation and distillation.

Should a technology arise from any quarter claiming significant reductions in Big User energy consumption, those claims should be tested and either debunked or validated. The question is “whose has the responsibility to do so?”. I have arrived at the sad conclusion that there is no such individual or group on this planet. An energy catastrophe could occur while technologies that might prevent it remain in obscurity.

But there are grounds for optimism as well. This world is populated with many intelligent people (like yourself) who care about global problems. As individuals they may little say in the affairs of technology but through their on-line associations they can have great influence in lifting an idea out of the shadows and into the light where its true merits can be determined.

I experienced the power of the internet first-hand quite accidentally. A singing group I belong to gave an impromptu performance in a coffee shop and was caught in the act by a patron with a cell-phone video recorder. He posted the clip on YouTube for the enjoyment of his friends, but the video “went viral” and was soon viewed by over a million people around the world (check out “Old Men Singing at Tim Hortons” on YouTube). No single person determined the extent of its reach. It was the “many people” who thought it worthy of the attention of friends and associates.

You know someone who might benefit from knowing about PTD. Why not send him the link to this site?

What’s “new”?

Distillation is a one of the oldest and most widely practised industrial practices known to man. Could there really be something new in such a well-worn field of study?

“Newness” has a particular meaning to patent attorneys, and in that sense pass-through distillation is not new.  But there is also a subjective sense of the word, as in “That’s new to me!” For most of us, this category includes many great inventions that failed the test of commercialization and vanished into obscurity. In this sense of the word, pass-through distillation may be new to you.

Once you have learned what it is and how it works,  you will want to know if it is relevant to you. You might ask: Can it be applied to my process? What are its operating costs and capital costs as compared to conventional technology? If it enables me to reduce energy consumption,s will I get carbon credits? Are there any case studies in my industry? Who is currently active in this field?

I am hoping to make this kind of multi-disciplinary information available on this site over time.

Notes on Part 4 (of PTD 101)


Part 4 contains the surprising truth that gives pass-through distillation its real energy saving potential. In a nutshell, gas absorption changes the state of the absorbed gas into a liquid; consequently the latent heat of evaporation must be rejected (as in a condenser). But this heat may be at a higher temperature than the contents of the evaporator.  An appropriate heat exchange system then can supply the evaporator’s heat needs from the absorber.  If this is done, we get the first boil-up “for free”.

We learned in part 3 that the second boil-up can use multiple effects to reduce energy consumption by 50%.  So the combined energy use of the first and second boil-ups is 0 + 50% = 50% of conventional distillation.

I have found no instructive videos on Youtube to aid here,