Engineering News Blog

Engineering News

Latest news of interest to engineers. Sourced from GlobalSpec's Engineering News

Previous in Blog: Nanoshells Could Enhance Precision of Cancer Treatment   Next in Blog: Three-Legged Robot Uses Exploding Body to Jump
Close
Close
Close
17 comments
Rate Comments: Nested

A Cleaner Way to Use Coal

Posted February 07, 2013 12:35 PM

From MIT Tech Review:

Coal is abundant and cheap, but burning it is a dirty business. This week researchers at Ohio State University announced a milestone in the development of a far cleaner way to use the energy in coal-a process called chemical looping that has the potential to reduce or eliminate a wide range of pollutants, including carbon dioxide and smog-forming nitrogen oxides.

One version of the technology ran continuously for over a week in a 25-kilowatt test facility, the researchers reported, the longest any such process has run. The successful test clears the way to ramp up the technology in a one-megawatt demonstration plant that's being planned in collaboration with the energy company Babcock and Wilcox.

Read more here: http://www.technologyreview.com/news/510736/a-cleaner-way-to-use-coal/

Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Good Answers:

These comments received enough positive votes to make them "good answers".

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
2
Guru
Belgium - Member - New Member APIX Pilot Plant Design Project - Member - New Member

Join Date: Aug 2006
Location: Glabbeek, Belgium
Posts: 1480
Good Answers: 28
#1

Re: A Cleaner Way to Use Coal

02/08/2013 2:33 AM

The cleanest method: leave it where it was for millions of years

__________________
"Here we are now, entertain us"
Reply Good Answer (Score 2)
Guru

Join Date: May 2008
Location: Aggieland, Texas
Posts: 722
Good Answers: 8
#2
In reply to #1

Re: A Cleaner Way to Use Coal

02/08/2013 6:22 AM

"and then, stored in the ground"

If the CO2 is going to be stored in the ground, then, it's still here. It isn't neutralized. Why is money spent on research that isn't even trying to get rid of the pollution? They're just burying it. Kinda like the spent nuclear rods that are to be stored in a mountain for 50000 years. However, the spent rods can be reused if the people can stand a higher price for their electrical power. I believe reusing the spent rods will come to past.

Have some fun today,

PAPADOC

RMFR

Why seek for reason when there is none.

Reply
Guru
Hobbies - Target Shooting - New Member Hobbies - Fishing - New Member

Join Date: Jan 2006
Posts: 1059
Good Answers: 12
#3
In reply to #2

Re: A Cleaner Way to Use Coal

02/08/2013 7:24 AM

Who is going to guard the rods for 50,000 years? My faith in humanity doesn't go more than a few years.

Reply
Guru

Join Date: May 2008
Location: Aggieland, Texas
Posts: 722
Good Answers: 8
#4
In reply to #3

Re: A Cleaner Way to Use Coal

02/08/2013 8:27 AM

Of course, after 50000 years they won't be a hazard anyway. I believe within the next 25 years, we'll start using them to produce electrical power. Although using spent rods instead of new rods is more expensive, it's still less expensive than using fossel fuel. We've had a discussion on this before.

Have some fun today,

PAPADOC

RMFR

Reply
Guru
Hobbies - Target Shooting - New Member Hobbies - Fishing - New Member

Join Date: Jan 2006
Posts: 1059
Good Answers: 12
#7
In reply to #4

Re: A Cleaner Way to Use Coal

02/08/2013 7:44 PM

I dispute your thought that any known nuclear plant with any fuel is less expensive than a gas turbine. It might be close in other countries where they have not yet developed their natural gas resources, but that will be changing in the time it takes to build a new nuclear plant. I have a gread reference to back me up, it is from a nuclear plant economist: http://www.prnewswire.com/news-releases/nuclear-economics-expert-comments-on-closure-of-crystal-river-nuclear-power-plant-by-duke-energy-189900281.html

All the best,

Ron

Reply
Guru

Join Date: Apr 2011
Posts: 8006
Good Answers: 286
#5
In reply to #2

Re: A Cleaner Way to Use Coal

02/08/2013 4:25 PM

You know the economics of using reprocessed fuel isn't the big impediment. Rules Carter put in place are the big impediment.

__________________
Eternal vigilance is the price of knowledge. - George Santayana
Reply
Guru
Hobbies - Target Shooting - New Member Hobbies - Fishing - New Member

Join Date: Jan 2006
Posts: 1059
Good Answers: 12
#6
In reply to #5

Re: A Cleaner Way to Use Coal

02/08/2013 7:37 PM

Could you please give me a reference on Carter's rule. What was his motive? He was a nuclear engineer in the navy.

Reply
Guru

Join Date: Apr 2011
Posts: 8006
Good Answers: 286
#8
In reply to #6

Re: A Cleaner Way to Use Coal

02/08/2013 9:49 PM

Yup. There is even a sub named after him.

Carter's executive orders in 1977 and his veto of S. 1811, the ERDA Authorization Act of 1978, put an end to reprocessing in the US, including shutting down reprocessing reactors and ceasing production on plants under construction.

.

The agreements and role assumed by the US through the Nuclear Non-Proliferation act in 1978 as well as the 1980 executive order for cooperation with EURATOM pretty much sealed the deal.

.

President after Carter have not been effective at repealing the ban (I am only aware of Reagan making attempts to reverse the action.) and some have acted in support of the ban.

__________________
Eternal vigilance is the price of knowledge. - George Santayana
Reply
Guru
Hobbies - Target Shooting - New Member Hobbies - Fishing - New Member

Join Date: Jan 2006
Posts: 1059
Good Answers: 12
#9
In reply to #8

Re: A Cleaner Way to Use Coal

02/09/2013 12:09 PM

That explains a lot. It is a perfect example of how the United Natiions is a good debating club, but should not be allowed to rule anyone. They can make all the propositions they want, but we should not allow ourselves to be bound by them if circumstances change. Just one more frustration, and stupid policy we are living with. Hope we can change this somehow, but I would be happy with just using Yucca Mountain and concentrating all the nuclear material in one secure site. Is any other nation recycling these rods?

Reply
Guru

Join Date: Apr 2011
Posts: 8006
Good Answers: 286
#11
In reply to #9

Re: A Cleaner Way to Use Coal

02/09/2013 1:28 PM

Japan was. I think I remember something about China an possibly India having plans for such, though that was all before Fukashima.

__________________
Eternal vigilance is the price of knowledge. - George Santayana
Reply
Guru
Hobbies - Target Shooting - New Member Hobbies - Fishing - New Member

Join Date: Jan 2006
Posts: 1059
Good Answers: 12
#10

Re: A Cleaner Way to Use Coal

02/09/2013 12:14 PM

Underground coal gasification sounds better to me, but not for nations which have natural gas available. http://en.wikipedia.org/wiki/Underground_coal_gasification

Reply
Guru
Belgium - Member - New Member APIX Pilot Plant Design Project - Member - New Member

Join Date: Aug 2006
Location: Glabbeek, Belgium
Posts: 1480
Good Answers: 28
#12

Re: A Cleaner Way to Use Coal

02/11/2013 3:29 AM

Getting stuff out of the deep is a multiple problem:

1. The environmental impact of winning is huge (spills, chemicals used, the unusable part of what comes up)

2. Using it brings material in the atmosphere besides the natural processes: historical data shows that only the natural processes on itself can disrupt the whole system for decades, now we add disrupting factors at huge speed.

3. The land becomes unstable: just google a bit on what is going on in the north of the Netherlands (Groningen), and that is just the tip (and regional start) of the effect as it is part of the civilized world.

If Carter was a nuclear engineer in the Navy he knew the real issue of the nuclear problematics, he should be respected for daring to cross the will of the decision makers who only look to the economic calculations and costs they want to take care of.

For sure there is action to reprocess the used nuclear rods: France and Belgium have processing units that split the usable fraction from the unusable and hugely dangerous fractions. But it takes years before they can start processing them. (one of the biggest issues in Fukushima were the used rods as they contain the most material and if not cooled anymore could start working their way down)

Denmark has the most experience on wind energy (solar is not really a high flyer there) and their conclusion after decades is that it is feasible to go for 100% renewables. You just have to want to do it. that is where the whole problem resides: the decision makers don't want it and forget democracy at this level: this part of economy is a dictatorial monarchy of some famillies taking all decisions.

__________________
"Here we are now, entertain us"
Reply
Guru

Join Date: May 2008
Location: Aggieland, Texas
Posts: 722
Good Answers: 8
#13
In reply to #12

Re: A Cleaner Way to Use Coal

02/11/2013 6:48 AM

The reusing of the spent reds is more for safety than economics. Although the nuclear plant designers where short sighted in their method of disposal of the spent rods, the rods are here and will be dangerous for at least 25000 years. Now that we have a way to lower the risk, let's do it.

PAPADOC

RMFR

All projects should be analysed from the time the project materials come from the earth to when they go back to the earth-PAPADOC, at time = 0, i.e., right now.

Reply Score 1 for Good Answer
Guru
Hobbies - Target Shooting - New Member Hobbies - Fishing - New Member

Join Date: Jan 2006
Posts: 1059
Good Answers: 12
#14
In reply to #12

Re: A Cleaner Way to Use Coal

02/11/2013 6:54 PM

You are not considering the cost of energy. Germans pay triple what Americans do. Most of Europe has been relying on coal, and is importing it from us. The UK, Germany, Poland, Ukraine, and others are all rushing to frack. This is not reported very much as it does not fit the left wing agenda.

Reply
Guru
Belgium - Member - New Member APIX Pilot Plant Design Project - Member - New Member

Join Date: Aug 2006
Location: Glabbeek, Belgium
Posts: 1480
Good Answers: 28
#15
In reply to #14

Re: A Cleaner Way to Use Coal

02/12/2013 3:15 AM

"This is not reported very much as it does not fit the left wing agenda."

Such a funny US phrase, straight out of the McCarthy era.

We know that we are using coal and a lot, most of it comes from Australia and South Africa.

There are even new coal burning plants in construction, it is the power game of economics dictation to do the cheapest, as I said: some have all to say and simply don't allow democracy to step in.

Such a contradictionary to the idea that we are ruled by program economics with the green party dictating what to do.

But we have the right to protest and to change our personal course: Europe forced competition at various levels. Some companies and organisations had to be split due to the fact that they ended up in a form of monopoly that could prevent others to step in. this created a possibility to step away from the power generation company that just makes cheap electricity and sells it expensive to companies who invest in alternatives. This possibility has forced some traditional organisations to accept market rules (politics failed somehow directly but could awaken the masses not to accept it anymore)

And Yes, we pay the multiple of what Americans do (VAT is 21% in Be, imagine), we have litterally run out of natural resources (most of us) and still the masses didn't fall in poverty when the banks decided to take profit out of a bad situation.

__________________
"Here we are now, entertain us"
Reply
Guru
Hobbies - Target Shooting - New Member Hobbies - Fishing - New Member

Join Date: Jan 2006
Posts: 1059
Good Answers: 12
#16
In reply to #15

Re: A Cleaner Way to Use Coal

02/12/2013 3:00 PM

I notice you do not mention fracking, which is the logical and most important next move.

Reply
Guru
Belgium - Member - New Member APIX Pilot Plant Design Project - Member - New Member

Join Date: Aug 2006
Location: Glabbeek, Belgium
Posts: 1480
Good Answers: 28
#17
In reply to #16

Re: A Cleaner Way to Use Coal

02/13/2013 3:23 AM

Indeed, fracking is the next move. Even under our densly populated area they are planning to invest in this technique. (Shale layers)

But what is going on 200km to the north (Groningen) will slow down seriously the momentum. Fracking is even more invasive and destructive for the supporting bedrock than natural gas extraction.

Again a point to work out: if industry decides to take this route, politics need to react and if necessary help the alternative route to develop.

__________________
"Here we are now, entertain us"
Reply
Reply to Blog Entry 17 comments

Good Answers:

These comments received enough positive votes to make them "good answers".

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

Gwen.Stouthuysen (4); PAPADOC (3); ronwagn (7); truth is not a compromise (3)

Previous in Blog: Nanoshells Could Enhance Precision of Cancer Treatment   Next in Blog: Three-Legged Robot Uses Exploding Body to Jump

Advertisement