Power stations operating with pellets

leboncaramel · by **leboncaramel** » 05/01/12, 17:36

Bonjour,

I am in the last year and I have to present a work at the end of study. I had absolutely no idea where to go until the day when I read in a newspaper that Électrabel intended to build several power plants running on pellets between 2014 and 2018.
So I took as subject: How does a pellet power plant work?

I have already written 7 pages on the biomass, the pellets as well as the manufacturing of these (I have been to visit a factory where he manufactures them) but there I come to the heart of the subject, that is to say the operation of a power plant powered by pellets. But there, I block. apart from talking briefly about the operation of such a factory, I do not know what subject to discuss.

So if someone can give me some ideas for leads to be exploited or even documentation on the subject (because I find it difficult) it would be super cool.

Thank you in advance.

Christophe · by **Christophe** » 05/01/12, 17:49

A pellet power plant is a bit of bullshit ... because the cost per thermal kWh is the highest cost of wood that exists !! Are you sure it's not wood chips instead ??

If you want some food for thought on generating electricity from wood, here are a few:

https://www.econologie.com/forums/gazeificat ... t3864.html
https://www.econologie.com/pyrolyse-et-g ... -4356.html
https://www.econologie.com/forums/chaudieres ... 11163.html

Manufacturing of pellets:
https://www.econologie.com/forums/schema-usi ... t4348.html

Do not hesitate to abuse: https://www.econologie.com/forums/search.php

leboncaramel · by **leboncaramel** » 05/01/12, 17:55

No no, it is a power plant powered by wood pellets
http://www.quenovelle.be/jehay/spip/art ... rticle=142

Christophe · by **Christophe** » 05/01/12, 18:03

Ah yes the Awirs power plant, I heard about it, but it is not a new power plant! It is an old converted coal plant!

So I imagine it's a story of cost / possibility of conversion ...

In the case of a new plant, I don't know if we will use the pellets ...

We talked about it here in 2007: https://www.econologie.com/forums/post61565.html#61565

leboncaramel · by **leboncaramel** » 05/01/12, 18:10

Yes indeed it is this central.

But in my newspaper article that I said: "according to our information, electrabel plans to build several power plants of this type in Belgium between 2014 and 2018 (...) each with a power of 200 megawatts.

Evening, Wednesday September 21, 2011

so I took this subject and I really get stuck in this type of power plant: s

Philippe Schutt · by **Philippe Schutt** » 05/01/12, 18:20

In fact, it is not a combustion of pellets but of sawdust.

The sawdust is transformed into pellets for transport, because less dust during handling, and less volume in boats so we transport more.
Storage and transport in the plant are still in the form of pellets, perhaps even dosing, but then they are crushed to make sawdust again. This sawdust is sent into the hearth in general by blowing, it makes a flame like fuel oil, the ash in addition.

The rest is classic, steam turbine alternator, and the rotten efficiency that goes with it unless cogeneration.

chatelot16 · by **chatelot16** » 05/01/12, 18:23

it's really a funny idea

we see in the plant overview, a grinder to grind the pellets and send the dust into the boiler

burning coal is classic for burning it with dust

but why not crush forest chips, much cheaper than pellets! and leave the pellets in small boilers that do not accept the wafers

leboncaramel · by **leboncaramel** » 05/01/12, 18:24

ha okay, yes i'm also talking about cogeneration but what could i talk about for the factory? because as you said, it's classic: steam, turbine, ..

Ahmed · by **Ahmed** » 05/01/12, 18:25

As you could explain Christophe and many others here, pellets are an already developed form of fuel which adapts well to small installations since the investments of storage and conveying of pellets are reduced to the minimum.

On the other hand, for strong powers it is more interesting to reinforce the infrastructure and to play on the price differential, by using pads, product clearly less expensive.

Kind advice in passing: reread your report well before presenting it, in order to purge it as best as possible of its content of spelling mistakes ...

Philippe Schutt · by **Philippe Schutt** » 05/01/12, 19:03

Analysis of the fumes and feedback on the combustion parameters, dedusting of the fumes, composition and T ° of the fumes finally discharged and a comparison with oil or coal power stations.

A prospective with the use of new high-efficiency turbines close to 60%, because if this is only a facelift of an old plant it will probably not be the same for those in the pipeline.

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Power stations operating with pellets