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Waste Tyres to Hydrogen....

 
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Mark



Joined: 13 Dec 2007
Posts: 883
Location: NW England

PostPosted: Tue Oct 31, 2017 11:55 am    Post subject: Waste Tyres to Hydrogen.... Reply with quote

http://www.proactiveinvestors.co.uk/companies/news/182724/powerhouse-energy-group-hails-extended-trial-of-breakthrough-waste-to-power-unit-182724.html
https://www.powerhouseenergy.net/powerhouse-energy-group-hails-extended-trial-breakthrough-waste-power-unit/

An extended trial of PowerHouse Energy Group PLC’s (LON:PHE) waste-to-power system has returned some encouraging results. Its G3-UHt unit used a feedstock of tyre crumb as part of the extended trial at the Energy Centre of Thornton Science Park in Cheshire. The synthesis gas (syngas for short) produced contained 50% hydrogen, which it wants to turn into a vehicle fuel. The other constituents were carbon monoxide and methane. “PowerHouse has long focused on the efficient generation of energy from waste. However, our ability to generate a concentrated volume of hydrogen from waste, on a distributed basis, sets us apart from others,” said chairman Keith Allaun. “We believe that distributed modular gasification is critical to opening the door to the coming hydrogen economy. “These trials will allow us to manage and maximise the constituent elements of the syngas we create to best serve our business model objectives of delivering hydrogen as a road-fuel.”

On the face of it, seems like win:win ?
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PS_RalphW



Joined: 24 Nov 2005
Posts: 5267
Location: Cambridge

PostPosted: Tue Oct 31, 2017 12:13 pm    Post subject: Reply with quote

The devil is always in the detail. What is the net energy of the process? Collecting the tyres, processing them to crumb, heat and other inputs to the chemical process, and what do you do with the carbon monoxide? It used to be part of town gas, which why it was so convenient for suicide (including my wife's grandmother). And the end result is that the carbon tied up in the tyres ends up as greenhouse gas rather than landfill. Also, tyres have lots of additives, including sulphur, which will need collecting to avoid acid rain, and the steel structure, which could be recycled.
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adam2
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Joined: 02 Jul 2007
Posts: 6220
Location: North Somerset

PostPosted: Tue Oct 31, 2017 1:16 pm    Post subject: Reply with quote

The disposal of used tyres is a significant challenge. So this proposal may have some merit if considered primarily as a disposal system, with the useful fuel being considered as by-product that offsets the disposal costs.

The gas produced does indeed sound rather similar to the old town gas, and could be utilised in an engine to produce electricity, or for some other purpose. That would save the cost and losses in separating the hydrogen.
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RenewableCandy



Joined: 12 Sep 2007
Posts: 12469
Location: York

PostPosted: Sat Dec 09, 2017 7:25 pm    Post subject: Reply with quote

I think there's a project in Africa making sandals out of old tyres.

Which is the more useful depends on your needs at the time I suppose...

Yeah here we go: apparently it's been a thing for ages...

https://www.theguardian.com/world/2010/jan/03/ethiopia-internet-shoe-firm-solerebels
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emordnilap



Joined: 05 Sep 2007
Posts: 13974
Location: Houǝsʇlʎ' ᴉʇ,s ɹǝɐllʎ uoʇ ʍoɹʇɥ ʇɥǝ ǝɟɟoɹʇ' pou,ʇ ǝʌǝu qoʇɥǝɹ˙

PostPosted: Mon Dec 11, 2017 11:26 am    Post subject: Reply with quote

I have a couple of pairs of Sole Rebels, they're tres snazzy but pure leisurewear.
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