Sequester the CO2, they think about it

Warming and Climate Change: causes, consequences, analysis ... Debate on CO2 and other greenhouse gas.
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jean63
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Sequester the CO2, they think about it




by jean63 » 08/02/06, 08:57

All these solutions or questions that seem unrealizable, he begins to talk about it in scientific circles : Arrow:

The sequestration of CO2, an interesting but expensive track ... - by pollux the 06 / 02 / 2006: 23: 04

Among the solutions conceivable to get rid of this CO2 so long, the most fashionable is to bury it, to sequester it geologically.

By sequestering means:

or transformed (chemically or physically) in a permanently stable material.

or burying it in geological reservoirs as we plan to do to store hydrogen.

Below we will discuss emerging technologies in storage CO2.

Unfortunately, this storage can only apply to fixed infrastructures. The outlook is most interesting for energy production activities. Transport activities (as long as the fuel cell has not become the standard) as well as agricultural activities are excluded, which limits its scope. Sequestration still offers interesting opportunities.

To permanently store the CO2 several techniques are possible and mastered.

The burial of CO2 includes four main steps:

separation (or capture)

compression,

transportation,

storage.

A study made by the IFP (French Institute of Petroleum), published on the Internet, provides an approximation of the storage costs of CO2.


this possibility only applies at the moment to the field of energy production and heavy industry


Read more of the article in the news.

But do we really know how to capture it? at the exit of the exhausts for example?

And you what do you think?
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by jean63 » 08/02/06, 11:09

And that, it inspires you more : Arrow:

a) The storage of CO2 in the ocean

Seawater naturally absorbs CO2. it is even the first natural source of consumption of CO2.

CO2 dissolves naturally in seawater depending on its concentration in the atmosphere and temperature of the seawater. We already know that the increase of the temperature of the atmosphere and the rate of CO2 will make the ocean a less good carbon sink.The CO2 mixes ax ions calcium and magnisium and rushes. It then "flows" to the bottom of the water where it sediments to form the limestone rock. CO2 dissolved in seawater is also used by marine organisms to form their shell.

To store more CO2 in the ocean, we can use the fact that liquid CO2 is denser than water. The temperature and pressure conditions required for liquefaction of CO2 are obtained at a depth of 3000m. By injecting the gas directly at this depth, it would liquefy itself and remain trapped under water. However, this method has detractors. We have no guarantee that CO2 slicks are not going to move and find conditions where it would become gaseous, other parts CO2 injection may not be neutral for fauna and marine flora.


b - The geological sequestration of CO2

The geological sequestration of CO2 is the most interesting route. It consists in giving back to Caesar what belonged to it by injecting the CO2 in the empty deposits of gas or coal oil. These deposits have proven in the past their storage capacity over the long term (for oil and gas anyway) By injecting CO2 into its geological formations, it can be stored for millions of years.


It is still not bad the b-

At this place, in 10000 years, when I will reincarnate in ??????, I would prefer to find CO2 there than nuclear waste. : Mrgreen:

To understand everything you have to read the whole article in the news
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GDF wants to sequester CO2




by jean63 » 22/06/06, 11:20

does it interest someone?

GDF wants to sequester CO2 ==>

CO2: Gaz de France engaged in capture and storage
In an effort to limit greenhouse gas emissions, Gaz de France is currently involved in several carbon capture and storage projects (CO2), reports the Petroleum Industry Bulletin. The Gas Group is therefore associated with the European Castor program, which began in February 2004 for a four-year period, said Marc Florette, Director of the Research Department of Gaz de France, at the 23th World Gas Congress in Amsterdam. The objective of this project led by the IFP (French Petroleum Institute) is to halve the cost of capturing CO2. Of the four types of underground storage studied in the program, Gaz de France operates a depleting gas field in the Dutch North Sea and is a partner in a deep saline aquifer in the North Sea. As the Gas Group has significant sequestration capacity, it hopes to commercialize a storage service in the future. It will initially store the CO2 emitted by a clean coal power plant of the German electrician Vattenfall, as part of a three-year pilot project. Gaz de France has the Altmark field, which alone accounts for 20% of CO2's storage capacity in Germany. Michel Bayle, Director of the Exploration and Production Division of the Gas Group, stresses that, in addition to its ecological and image-wise interest, the sequestration of CO2 could make it possible to develop the deposits at the end of its life and the geological skills of the company. business.


Found in a forum (do not know the source)
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by Christophe » 22/06/06, 11:52

Last edited by Christophe the 14 / 08 / 06, 11: 42, 1 edited once.
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by Targol » 22/06/06, 16:33

It is challenging, faced with a given problem, the solution is always to try to correct the consequences without ever tackling the cause. : Evil:

It is as if, in the event of a plumbing leak, a builder was called to build a swimming pool to store the result of the leak rather than attempting to repair it. : Lol:

So we will invest huge sums to store CO2 rather than trying to produce less which seems to me a more logical way of dealing with the problem ...
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by Christophe » 22/06/06, 21:35

Targol wrote:It is challenging, faced with a given problem, the solution is always to try to correct the consequences without ever tackling the cause. : Evil: ...


Ben vi ... rarely we know how to do the preventive (in medicine it's the same) .... welcome to a world of consumption ... In addition to pollution is a very promising future market ... So much pollute as much as possible so we can clean up a max! And long live GDP that believes! :| :| :|

Consumption is the basis of our western economies ....
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