RE: Heading North Everyday ?28 Jul 2024 10:34
Hey @15LIVES - thanks for the comment. I wasn't involved in / close to the Air Products issue, but it certainly set the cause back quote a way (along with Energos, Outotec, Envirofusion, Enerj8 the list goes on). AP was probably the highest profile failure due to it's size, from what I recall they had a c.1TPH test unit working well, then tried to scale massively (up to something like 1,000 tonnes per day and got something very, very wrong on the thermodynamics, melted a hole in the side of one of the reactors you could drive a car through (this might be urban legend but it was a widespread story at the time). They lost over $900m on the project and it basically gave Gasification / Pyrolysis a horrific reputation.
In almost every single application I've seen fail, it has been the ability to deal with problematic feedstocks that has been at the heart of the issue. Whether that's clinker formation from low ash-melt point plastics, Hydrogen Chrloride formation from PVC in the feedstock or failure to maintain steady reactor temperature because of variable moisture content, CV or fraction size. It's always about the fuel, and test plants with carefully curated feedstocks will fool those who haven't seen the problems, but they won't fool anyone who knows what they're looking at. For a true test you should allow someone to bring 168 hours worth of their own waste, do a supervised pre-screen to remove any seriously out of spec material, then run the plant for 24 hours per day for 7 days straight. That will show that the kit actually works.