The car Biogas

crude vegetable oil, diester, bio-ethanol or other biofuels, or fuel of vegetable origin ...
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Did67
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by Did67 » 15/11/13, 12:40

We have identified an Austrian company which would offer "membranes" which separate CH4 and CO² (I do not know the process; it is someone who was not a chemist but who was at a fair in Offenburg in Germany who told us about it. talked). He told me about carbon tubes.

J'conceived that these are nanotechnologies with a tube having a "mesh" which allows CH4 - small molecule - and not CO² - large molecule.

We are trying to find out more, because we are moving towards 240 kW electric - it is acquired; some paperwork still! - but we think that our "vats" could still produce a little more than the methane consumed by our group at its power of 240 kW ... [which will already ensure its profitability!]

We are starting to consider negotiating with a owner of a captive fleet of minibuses, if this technique is confirmed and remains affordable ...
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by chatelot16 » 15/11/13, 16:23

the passage through a membrane is one of the techniques for separating CO2 and methane, it consumes power and makes a more or less perfect e separation, so lost energy by the pressure it takes to pass through the membrane and lose methane with the CO2 rejected

for now the solution that I find the most practical is absorbtion on limestone column watered with water

to use methane buses are not the most practical: it is material used in public or everything must be perfectly in order, so maximum price

on an agricultural tractor we are much more free to install what we want ... the benefit is lower since we replace the domestic fuel and not road diesel, but it can be simple without costs ... and we avoid the subject who faces the TIPP

given the high power of the tractor, just put a small proportion of gas to make something profitable

it would be easier to put a bottle of methane on the tractor of the farmer who are your supplier, than on buses

on a bus the methane tank is an extra weight ... on the tractors we often put counterpoise because it is not heavy enough: a methane tank will only replace counterpoise
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by chatelot16 » 15/11/13, 16:47

another process of C02 absorption is the method PSA pressure swing absorbtion (nothing to do with peugeot), but as the membrane that neccessite expensive supplies

I prefer water and limestone that cost almost nothing

water and limestone absorbs the CO2 without the need for pressure: the water comes out very rich in dissolved limestone, and makes a petrifying fountain: when the water loses its C02 in the open air it deposits are C02, and one can recycle it in the system

a washing of methane with water alone will also work, because CO2 is more soluble than methane, but with limestone the quantity of absorbed C02 is higher, therefore lower water flow and less methane lost.

if the quantity of methane to be purified is small, it is possible to be content with a simple system that will waste a lot of methane in the CO2 rejected: it is not rejected, it is put back in the tank to make it swallow by the group : it's a way to simplify the CO2 absorber

this possibility of simplification could make interesting a single water absorber without limestone: the gas passes through an inert column watered with water ... the water leaving the column is degassed under vacuum, which comes out of the vacuum pump is put back into the methanizer

we could think to send this C02 containing a little methane to the generator, but it would change the composition of the gas when we start this system that could disrupt: by returning into the methanizer, the volume mixes and avoids variations

the methane lost by the purification system is seen as a big defect ... but as we still need a generator around a methanizer, we can organize ourselves to give it to the group

in some cases it is possible to turn the group in purified methane when we want the maximum power, and to turn it to methane with CO2 when we want a lower power
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by Remundo » 12/04/14, 20:06

An interesting video on the topic of CNG

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Eric SORTINO / the 2V Knight of Bhyomethane

To watch on l'Sycamoree Announces 12 April 2014
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by gildas » 13/04/14, 11:28

Eric Sortino is also laying generators HHO, which makes this technique more and more believable. :P
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by Remundo » 15/06/15, 08:21

Good News on the side of Mont de Marsan / Eric SORTINO with the opening of a CNG / CNG station

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Details of the inauguration of the 26 June here
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by Did67 » 15/06/15, 11:57

For information. I have neglected, for lack of time, the thread on our biogas plant.

We are currently working with a local company and "gas companies" on a "micro-injection" project (in addition to cogeneration).

It's not win. Business plan question. the technique still seems overpriced for small volumes. Even if she is attractive. And would be "ecologically" more logical ...

I'm talking about purifying biomethane for injection.

Incidentally, we plan to compress this purified biomethane for our fleet of vehicles (cars, tractors ...).
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by chatelot16 » 15/06/15, 18:25

purifying the biogas to inject into the network is difficult because it requires a good guarantee of quality

compressing to use in some agricultural tractor is simpler ... if the purification is bad and rust the tank of a tractor it does not concern anyone else ... it's not like a lack of quality of injected gas whose consequences are difficult to manage

to feed tractors or other vehicles one can choose to use composite tanks insensitive to corrosion: it's easier than purifying to ensure the safety of old steel methane tank

by feeding some tractors of the corner one can master the whole chain
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by Did67 » 15/06/15, 19:27

Absolutely!

I am talking about volumes of 100 m3 / hour of biomethane. We think to boost the station to 200 m3 / h. Let 100 m3 / hour of methane! The power of a captive fleet represents peanuts! The icing on the cake, just to laugh!
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by Remundo » 04/07/15, 19:01

Inauguration of the GNV station at SAINT PIERRE DU MONT in Aquitaine!

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In partnership with GrDF South West and Agglomeration of MONT DE MARSAN

Natural Gas Vehicle Station [CNG] carried by
1) Eric SORTINO [Catalysis Gas Co., Ltd.]
2) Pierre DENIS-FARGE [FAIL]

All information and details on this beautiful day to read here

@+
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