HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Topics » Environment & Energy » Environment & Energy (Group) » "Clean" Coal?
Introducing Discussionist: A new forum by the creators of DU

Thu Feb 21, 2013, 12:55 AM

"Clean" Coal?

I can't see if this was posted yet, but interesting work at Ohio State University:

New Coal Technology Harnesses Energy Without Burning, Nears Pilot-Scale Development

COLUMBUS, Ohio—A new form of clean coal technology reached an important milestone recently, with the successful operation of a research-scale combustion system at Ohio State University. The technology is now ready for testing at a larger scale.

For 203 continuous hours, the Ohio State combustion unit produced heat from coal while capturing 99 percent of the carbon dioxide produced in the reaction....Fan agreed that the nine-day experiment was a success. “In the two years we’ve been running the sub-pilot plants, our CDCL and SCL units have achieved a combined 830 operating hours, which clearly demonstrates the reliability and operability of our design,” he said.

At any one time, the units each produce about 25 thermal kilowatts—that is, thermal energy, which in a full-scale power plant would be used to heat water and turn the steam-powered turbines that create electricity....The researchers are about to take their technology to the next level: a larger-scale pilot plant is under construction at the U.S. Department of Energy’s National Carbon Capture Center in Wilsonville, AL. Set to begin operations in late 2013, that plant will produce 250 thermal kilowatts using syngas.

http://researchnews.osu.edu/archive/looping203.htm

4 replies, 807 views

Reply to this thread

Back to top Alert abuse

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 4 replies Author Time Post
Reply "Clean" Coal? (Original post)
OnlinePoker Feb 2013 OP
happyslug Feb 2013 #1
OnlinePoker Feb 2013 #2
wtmusic Feb 2013 #3
gluon Feb 2013 #4

Response to OnlinePoker (Original post)

Thu Feb 21, 2013, 01:06 AM

1. Yes it captures the CO2, but the CO2 is still a gas

How do you store a gas? Yes, you can build a huge container for it and hopefully it will not leak, but if it leaks the CO2 is in the atmosphere and the whole process was a waste of time.

Now, if they combine the CO2 with something else and make it a solid (or even a liquid) then the shortage problem is less of a problem. Such a process would require additional energy input, maybe more energy input then we get out of the coal itself.

Sorry I am NOT impressed, if this is the first step, then it is an important first step, but that second step, how to store this CO2 is the real issue.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to happyslug (Reply #1)

Thu Feb 21, 2013, 01:09 AM

2. 100% agree on the storage issue. n/t

Reply to this post

Back to top Alert abuse Link here Permalink


Response to OnlinePoker (Original post)

Thu Feb 21, 2013, 02:15 AM

3. No such thing.

CCS is a non-starter, and always will be, for the simple reason that enforcement will be impossible.

Instead of pumping that CO2 down into pressurized salt caverns, instead of expensive processes that convert it into carbonate blocks, all the utilities have to do when the regulators leave is turn their pipes toward the sky - and pocket the change.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to OnlinePoker (Original post)

Thu Feb 21, 2013, 04:02 AM

4. CO2

That's the kicker! What you gonna do with all that captured CO2?
The system may be a good way of capturing all the other nasties, if it can come somewhere near the efficiency of just burning the shit, but Coke can only flog so much fizz, and they're gonna hafta shoot the rest into the sun.

Reply to this post

Back to top Alert abuse Link here Permalink

Reply to this thread