Methanation (H2 + CO2 -> CH4) to smooth EnR production

[Did67]

I don't know how you dug it up ???

a) recently, electricity on spot markets was selling at a negative price; I launched a thread that made a flop ...

b) in anaerobic digestion (production of methane from organic waste by wet process), I find it unfortunate that the tariff is uniform whereas a differentiated tariff would make it possible to finance the storage of methane during the hours of overproduction of electricity to make turbines two or three groups afterwards in the hours of deficit; I made a note on the website of the great energy conference ...! A beast "gasometer" would suffice ...

[chatelot16]

this subject was found in Similar Topics to read below the methanization of obernai

of course that the first solution is to remote control all the consumers and producers who have a possibility of modulation by simple change of tariff

it would cost nothing at all ... not to do so is simply incompetent of those who lead!

I wanted to remind once again that this subject should be titled methanation, but I preferred to speak of methanol ...

[moinsdewatt]

Liffré. A farm injects gas into the GRDF network

Liffré - September 04



The Champ-Fleury Agricultural Grouping in Common (Gaec) is the first facility in Brittany to re-inject biomethane into the GRDF network.

The Agricultural Grouping in Joint Operation (Gaec) of Champ-Fleury, in Liffré, is the first installation in Brittany to reinject biomethane into the GRDF network. He is directly connected to it, since Thursday.

The injection tool opened this summer, after four years of administrative procedures and an investment of 2,5 million euros. The exploitation provides 30% of the consumption of the commune. Last May, the five partners had received the visit of the Minister of Agriculture Stéphane Le Foll. He welcomed a "constructive project" contributing to the "development of a circular economy, where waste becomes renewable resources".

http://www.ouest-france.fr/liffre-une-e ... df-3661537

[Did67]

OKAY.

It is also the order of magnitude of the forecast budget of the filtration unit on which we worked.

On small units, this seems prohibitive and therefore "non-depreciable".

With us (240 kWh electric), the project is on "stand by".

[Did67]

For information :

Ségolène Royal inaugurates in Strasbourg the first purification plant to produce city gas
The Minister of Ecology Ségolène Royal inaugurated today in Strasbourg a treatment plant which directly injects biomethane from wastewater into the city gas network, presented by its promoters as a world first.
Ségolène Royal visited and carried out the first injection into the network of biomethane gas produced at the treatment plant.

"The project we are launching today is, I hope, the first in a long series," said the minister shortly before the injection of the first cubic meters of biogas into the gas network of the Alsatian metropolis.

"This project also illustrates the circular economy which transforms waste into energy," said Royal.

Fourth largest wastewater treatment plant in France, located on the Rhine, the Strasbourg plant will now supply some 1,6 million m3 of biomethane per year. This is the equivalent of the needs of around 5.000 low-consumption homes.

"The potential that remains to be equipped is significant," said Ms. Royal: "By 2020, more than sixty treatment plants could be equipped" in France, to produce enough to supply more than 40.000 households (500 GWh per year).

If natural gas is still useful in the short term for the energy transition because it emits less greenhouse gases than coal or fuel oil, in the medium term however "France must gradually replace natural gas with biogas", in order to "meet its greenhouse gas reduction targets".

The methanation process used in the Strasbourg station is not new: it is a fermentation, via bacteria, sewage sludge, these end-of-course residues in the treatment of wastewater. This “digestion” generates biogas, which is often used for electricity or fuel.

The great novelty of the Strasbourg project, called Biovalsan and launched in 2012, is to make it a high quality biomethane, by purifying it and ridding it of the carbon dioxide it contains, then injecting it into the gas network. natural.

Until last year, regulatory barriers hindered the biomethane route from treatment plants. However, the regulatory framework was modified in June 2014 to authorize and support the production of biogas from sewage sludge from the stations.

Biovalsan, supported by funding of more than 2 million euros from the European Commission, is supported by the Strasbourg Urban Community, GDS Network and Suez Environment.

[chatelot16]

the title of this subject is still not corrected ... the beginning of this subject was methanation! methane synthesis with CO2 and hydrogen

putting methane gas into the methane network is another story

for me it is unnecessarily too expensive to purify biomethane respecting the same standard as natural gas ... it would be more logical to make a local network with customers who accept biomethane as it is supplemented by natural gas when the methanizer flow is not enough

customers of this network should have equipment that is a little more tolerant of impurities than standard gas equipment: all plastic or stainless steel, no zamak like standard gas equipment

this gas network would mainly interest industrialists ... less interesting for private individuals ... but it would in any case be possible to sell the production of a methanizer

[moinsdewatt]

For the first time, biomethane from the treatment of local household waste from the SMET 711 plant was injected into the GRTgaz transport network in Chagny, in Saône-et-Loire (71).

18 Sep 2015 enerzine

The injection of biomethane into the transport network must allow gas consumers (industrialists, domestic consumers connected to the distribution networks) to access renewable energy without changing their installations.

The production of biomethane by a public authority, the SMET 71, its transport in the GRTgaz network and then its use by a nearby industrialist, TERREAL, thus represent a formidable example of the circular economy.

From 2016, at the Chagny site, 28 GWh / year of biomethane will be produced from 73.000 tonnes of waste. These quantities of renewable gas, from the largest biomethane production facility in France, are equivalent to the annual consumption of 120 buses or 2 homes heated with gas.

GRTgaz indicates that it is doing everything to create the conditions favorable to the development of this new energy. To date, more than 70 projects are under study and 16 agreements have been signed in recent months. GRTgaz plans to materialize 3 to 5 projects per year in the coming years to reach up to 1 GWh / year of biomethane injected into its network in 000.

"This 1st injection illustrates the determination of the GRTgaz teams to put our gas infrastructures and our skills at the service of industry and communities to allow them access to a new renewable energy, biomethane" declared at the end of the inaugural ceremony, Thierry Found, Managing Director of GRTgaz.

** SMET 71: Joint Syndicate of Studies and Treatment of household and similar waste from Saône-et-Loire.

http://www.enerzine.com/12/18695+terrea ... y-71+.html


http://www.lagazettedescommunes.com/316 ... le-reseau/

[Did67]

It is the race between communities to be the "first" in "something" ... Strasbourg, it was a few days ago, methanization in a treatment plant with injection ...

http://www.dna.fr/actualite/2015/09/08/ ... z-de-ville

This does not hide the delay taken elsewhere: 7 or 8 agricultural methanisation stations in Germany ...

[moinsdewatt]

A biogas recovery unit is inaugurated this week on the "Entressen landfill", which was one of the largest in France and Europe.

6th October, 2015

The La Crau household waste storage center, better known as the "Entressen landfill", which was one of the most important in France and Europe for having housed household waste for a century. agglomeration of Marseille on 80 ha, has made a clean sweep of its sad past. Closed in 2010, it now houses a biogas recovery unit, inaugurated and put into operation this week. Its construction and management over 15 years have been entrusted via a public service delegation to La Crau Energies Verts, 95% owned by Verdesis, a subsidiary of Dalkia, and 5% by GRS Valtech. Ten million euros have been invested.

After improving the biogas collection network in the waste mass, now equipped with 233 wells (13 having been added), the company installed a biogas recovery unit with 5 turbines in a former baling center of 200 KW each, turning 3 motors with a power of 1,4 MW each. The electricity produced will be sold to EDF, while the heat from exhaust fumes from turbines and engines transforms the leachate into sludge by evapo-concentration.

http://www.environnement-magazine.fr/pr ... de-la-crau

[Did67]

Does anyone understand "turbines" that "turn" engines ???