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Potential benefits................15 Feb 2020 10:52
A 25 tons per day DMG would save customers £500k per year ( 2019 ], since this statement the DMG's have been advanced to 35 tons per day...................
So this would indicate saving the customer ball park £700k per year..........DYOR
Piltick in relation to your 10.55 post you are right it was my misreading of your post.
muscorum: Initially I believe that the plan is to use the entire syngas to produce electricity through a genset. At a later stage they will employ a PSA system to extract as much purified hydrogen for EV fuel as they can get out of it, and still use a genset to use the remainder of the syngas to produce electricity.
Some of this electricity (perhaps most of it, I don't know) will be required to keep the the DMG system running, i.e. the parasitic element.
One thing is certain, the DMG process will evolve.
Yes stokey, that's exactly my point.
Different types of plastic will yield different quantities of H2.
The only thing that matters is that the DMG can produce 2 tonnes of H2 and 52.8MWh's of electricity per day from mixed dirty plastic (or 80+MWh if electricity only).
It makes more sense to use mixed plastic rather than add a further step of separating (added cost), this way all available plastic will be used rather than favoring the higher CV plastics for higher yield, which could happen and could result in a mountain of unwanted low CV plastic which might still end up in landfill or being incinerated.
This is an extremely attractive proposition for any prospective licence holder worldwide.
From the numbers we have, the H2 accounts for about 34% of the recovered energy, assuming 40% efficiency of the gen-sets or 31% if the gen-sets are 35% efficient.
Kudos to Paul for giving the presentation.
Piltick - In relation to your 08.42 post the level of return on the hydrogen would depend on the selling price. If for arguments sake the hydrogen is sold at £5 a kilo and the DMG unit produces 2 tonnes that would give you 2000x5x350 = £3,500,000. It means that the additinal cost can be recouped inside two years. I do not think the plan is to use the hydrogen to make electricity I have always understood it to be thecase that it would be used to power vehicles of some type.
I'm not saying 70% hydrogen purity, it's 70% of the syngas that would consist of hydrogen, and that the hydrogen would then be separated from the rest of the syngas at 5 nines purity.
So there will still be the other gases remaining such as CO etc.
Well that's my understanding anyway.
I think the 70% hydrogen figure was after processing the syngas through the PSA equipment. But the problem with that is that the PSA equipment costs about £5M so there would need to be a huge additional return to cover that extra Capex.
That additional return can be achieved by selling the purified hydrogen for use in EVs, but probably not by using it to generate electricity.
I actually thought it was closer to 50% hydrogen that was produced during the first stage i.e. the gasification process. Then they will need to employ PSA equipment (Pressure Swing Adsorption) to increase the % of hydrogen produced and of course to bring the hydrogen to the required level of purification for vehicles.
I believe that the PSA equipment could cost about £5 million, but happy to be corrected on that.
Interesting analysis thanks BB.
PHE up on open.
Not sure if people aware there is a hydrogen and fuel cell association , see website below has some good infor including the use of DMG for hydrogen production by Paul Warwick of waste 2tricity. http://www.ukhfca.co.uk/2019/10/25/uk-hfca-regional-event-highlights-range-of-local-opportunities-for-hydrogen-and-fuel-cells/