If you go back to my posts of a few days ago when I was talking stage 3 in OHD, in reference to the 9 May Ann, my comments are there. I think stage 3 of the OHD process is theoretical and maybe that is what they are testing with the VBC as well as producing the fertiliser product as part of Stage 1 and 2 of that process for the trials. Here are some of those posts:
Post #: 26391570
Post #: 26430933
In terms of the debate around greater than 20 tonnes, just be mindful of the size of the facility in the USA which means that building a bigger plant still requires conceptual design and understanding how increased scope works for OHD (i.e. the unknown factor here). IMO, if OHD is feasible and in the interests of time, they will build a 20 tonne per day plant and then scope it in such a way that they will be able to add 20 per day units to it. If they decide to build bigger than that then they certainly will need to spec, design and test a larger plant than 20 tonnes per day and how to integrate the operations. That takes greater time but increasing size is not generally a 1:1 proportion in scale as efficiencies in size mean lower per unit cost inputs and mix of inputs and process etc and that configeration then needs to be tested for appropriateness.
An example to explain, a underwater pipeline up to a few hundred Km is specked one way with compressors, but the specs and compressors post are then a redefined configeration. For LNG, trains of different sizes are also specked slightly different, and that took testing, so having greater than 20 tonne per day specs for OHD will need testing and modelling here IMO. You just can't rescope a process in size without modelling work and testing of some form. That is my point here. All IMO
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