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re: What is clean coal?

Posted on 1/31/18 at 10:52 am to
Posted by griswold
Member since Oct 2009
4043 posts
Posted on 1/31/18 at 10:52 am to
quote:

Coal sucks as a power source just because of the residual material that you have to deal with like fly ash. I don't care if it's used but it's not the best choice.

Makes excellent “rocks” for landscaping.
Posted by Tchefuncte Tiger
Bat'n Rudge
Member since Oct 2004
57592 posts
Posted on 1/31/18 at 10:52 am to
Low sulphur, I would imagine.
Posted by RedStickBR
Member since Sep 2009
14577 posts
Posted on 1/31/18 at 10:53 am to
It's less to do with the mining and more to do with the carbon capture that takes place after a plant has burned the coal.
Posted by Btrtigerfan
Disgruntled employee
Member since Dec 2007
21732 posts
Posted on 1/31/18 at 10:55 am to
quote:

What is clean coal?


Stuff we used to export, then the Dims locked it up. Since, we have been dependent on Indonesian sources. Not to worry, the Clinton’s were getting paid for it.

Then Trump MAGA’d, and we’re going to go get our own coal. Maybe even sell some to China.

Sauces
Posted by RedStickBR
Member since Sep 2009
14577 posts
Posted on 1/31/18 at 10:55 am to
Apart from emissions and a dirty byproduct, coal is an incredibly efficient, very cheap power source. There's a reason Germany, who refuses to engage in fracking for natural gas, have turned more towards coal.

In the U.S., coal generation will likely become obsolete due to natural gas and the fact the entire capital market investment apparatus has moved on to other technologies (natural gas and renewables). Coal will still be around for a while, though.
This post was edited on 1/31/18 at 10:57 am
Posted by CarRamrod
Spurbury, VT
Member since Dec 2006
57528 posts
Posted on 1/31/18 at 10:57 am to
quote:

because of the residual material that you have to deal with like fly ash
which is used in 99% of concrete yet it is considered a hazardous material.
Posted by pochejp
Gonzales, Louisiana
Member since Jan 2007
7863 posts
Posted on 1/31/18 at 10:59 am to
quote:

Coal's biggest problem is that natural gas is kicking its arse cost wise.


This ^ and the fact that new power plants are building NG fired turbines or boilers and most coal burning plants are being converted to NG fired so demand is low in the US. But, exporting of US coal could be lucrative to 3rd world nations if regulations and tariffs make it profitable. We will see.
Posted by dantes69
Boise, Id.
Member since Aug 2011
2022 posts
Posted on 1/31/18 at 10:59 am to
clean coal can be turned into a liquid at a cost of about .35 cents a gallon, this fuel can be run in diesel motors
(with a small adjustment) and if all cars and trucks in North America ran on diesel there is enough CC known in America today to run every vehicle for the next 200 years.
Posted by junkfunky
Member since Jan 2011
34037 posts
Posted on 1/31/18 at 11:01 am to
quote:

Common sense tells me it's just a cautious way to mine coal.




I worked on the FGD unit at Indianapolis Power and Light. Pretty clean, but very expensive system.
Posted by Ace Midnight
Between sanity and madness
Member since Dec 2006
89798 posts
Posted on 1/31/18 at 11:02 am to
quote:

I don't care if it's used but it's not the best choice.


What's a "better" choice? Nuclear?

quote:

residual material that you have to deal with


Solar and wind are centuries from being able to supply a majority of developed (and developing, for that matter) countries' demand. They can be great - in certain environments and under certain circumstances. They can be a superior option for low demand power without having to expand the grid - for example. In addition, they can be great supplemental or gap filler power, again, if it is appropriate for the area.

But - CENTURIES - at least 1 century from being a viable alternative (rather than a supplement to), coal, oil, gas and nuclear.
Posted by upgrayedd
Lifting at Tobin's house
Member since Mar 2013
135220 posts
Posted on 1/31/18 at 11:04 am to
quote:

Apart from emissions and a dirty byproduct, coal is an incredibly efficient, very cheap power source. There's a reason Germany, who refuses to engage in fracking for natural gas, have turned more towards coal.


I think a lot of that has to do with their need to be self reliant on their own energy sources more than anything. They certainly don't want to rely on piping LNG in from Russia.
Posted by upgrayedd
Lifting at Tobin's house
Member since Mar 2013
135220 posts
Posted on 1/31/18 at 11:06 am to
quote:

which is used in 99% of concrete yet it is considered a hazardous material.


Pretty sure it's typically got pretty high levels of heavy metals.
Posted by upgrayedd
Lifting at Tobin's house
Member since Mar 2013
135220 posts
Posted on 1/31/18 at 11:07 am to
quote:

What's a "better" choice? Nuclear?

NG is a better choice by far.
quote:

But - CENTURIES - at least 1 century from being a viable alternative (rather than a supplement to), coal, oil, gas and nuclear.

I never suggested that "green energy" is the alternative answer here.
Posted by RedStickBR
Member since Sep 2009
14577 posts
Posted on 1/31/18 at 11:08 am to
They get a lot of gas from Russia and are using Russian gas more and more. In fact, they just greenlit a new gas pipeline from Russia today. Still, though, they thought they could retire their nuclear plants and go heavy renewable and they simply can't. They need reliable baseload power - that's why they are building coal plants.

LINK /

LINK
Posted by OBReb6
Memphissippi
Member since Jul 2010
37962 posts
Posted on 1/31/18 at 11:10 am to
quote:

Coal's biggest problem is that natural gas is kicking its arse cost wise.


Yep. See Southern Company’s Kemper County MS coal gasification plant (I recommend reading into it). There’s way too many nightmares to get into with the plant itself, but it is designed to run on anthracite and with natural gas prices being what they are they have modified it to run on natural gas.
Posted by Ace Midnight
Between sanity and madness
Member since Dec 2006
89798 posts
Posted on 1/31/18 at 11:13 am to
quote:

I never suggested that "green energy" is the alternative answer here.


Fair enough.

quote:

NG is a better choice by far.


Only because we've made coal so expensive in an unforced error (or self-inflicted wound, if you will).
Posted by upgrayedd
Lifting at Tobin's house
Member since Mar 2013
135220 posts
Posted on 1/31/18 at 11:14 am to
quote:

They get a lot of gas from Russia and are using Russian gas more and more. In fact, they just greenlit a new gas pipeline from Russia today. Still, though, they thought they could retire their nuclear plants and go heavy renewable and they simply can't. They need reliable baseload power - that's why they are building coal plants.

I was watching an episode of This Old House and they went to Germany to take a look at some of their energy efficiency efforts for residential structures. Apparently all new construction has to have a certain amount of self generated power. They had solar panels, but some were using wood pellet furnaces for heat generation as well as energy production.
Posted by navy
Parts Unknown, LA
Member since Sep 2010
29133 posts
Posted on 1/31/18 at 11:16 am to
quote:

You mean through reclamation?



Yes. It is pretty highly regulated, about as bad as one can imagine ... but, the results speak for themselves.


I have seen this first-hand, i.e. before vs. after.
Posted by upgrayedd
Lifting at Tobin's house
Member since Mar 2013
135220 posts
Posted on 1/31/18 at 11:17 am to
quote:

Only because we've made coal so expensive in an unforced error (or self-inflicted wound, if you will).

Maybe. But NG doesn't have the waste products that you have to deal with in perpetuity.
Posted by PapaZulu
Davidson, NC
Member since May 2014
368 posts
Posted on 1/31/18 at 11:18 am to
Clean coal can best be described as capturing and separating those heavy metals and contaminants as the coal burns but before they are released into the atmosphere. Existing coal plants can be retrofitted with an Air Quality Control System (AQCS).
Coal fired units produce 30-40% more power than their gas counterparts.

Some current gas turbines have the flexibility to burn fluidized coal as an alternative, should the market shift.

Carbon capture is under development currently by a couple companies. There is one scale plant design, but the model plant has yet to be built due to financial difficulties.
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