King Coal MUST Abdicate!
March 12th 2008 02:21
Sigh! I have said it before and said it often, Clean Coal is an Oxymoron! It is a contradiction in terms. By its very nature, the burning of coal produces huge volumes of carbon dioxide. It doesn't matter what fancy additions and modern day engineering fine tuning you add to the equation, the result is the same -- huge volumes of carbon dioxide will be spewed forth from coal fired power stations, now and forever more amen! Am I using loaded language? You bet. Am I being inflammatory in my choice of terms and in the way I am framing my argument? Yesirree dammit, I am! The reason is simple. These arguments and the equations that go with them have already been put and nobody is taking the situation serious enough. The time to act is now. We should initiate change that will result in energy generation coming from sources other than coal and nuclear sources.
I have laid out some of my preferred options elsewhere on this website. Meantime back to coal. First off, I do recognise that an immediate transition to other energy sources ain't going to happen over night. Other strategies need to be in place. Infrastructures need to be put in place and more importantly other power sources need to be made financially and operationally viable. It takes time, planning, experimentation, testing and finally roll-out and implementation. All accepted and given.
My objection is this short sighted focus on Clean Coal and the sequestering of CO2 waste gas. First off the sequestering of CO2 ain't practical. It's costly as a concept. It can't be made to work is a way that makes sense and frankly my dear, it's damned right dangerous as an engineering concept. Let's take it as a given that the engineers finally put together a plant where they capture the off-gas from a power station. They cool it and pipe it underground in a compressed form. Now CO2 is a funny substance. It doesn't like to exist as a liquid. You've heard the term, dry ice? Well children, that is CO2 in solid form. It does exist in a transition state when going from solid to gas, but that is usually from combining with water vapour in the earth's atmosphere.
So we get this huge cave and pipe the CO2 in under pressure. What happens? Well initially there won't be much pressure and the CO2 will change to a gas and start looking for a way out. But let's be optimistic - a dangerous supposition perhaps but still - let's suppose that the planners get it right and we end up with huge cave complexes filled with solid CO2. What happens then? Well for one thing it depends on how pure the CO2 is. Call me a cynic, but I would bet that any gas-off from a power station will have a nice little poisonous cocktail which would be piped along with the CO2 into these depths of the Plutonic underground.
Now let me paint a picture of some of the disasters that could and in some cases, are almost certain to happen. First off, Australia is in one sense the lucky country in terms of tectonic stability. We don't get much in the way of earthquakes or volcanic activity. Let us picture an increasing volume of CO2 based sludge growing underground. This sludge would combine with water under pressure and have the potential to be a nice little lubricant. Now some scientists would take out their notebooks and calculators and look at the engineering and say that I was scare mongering. To them I would say, in the first twenty five years or so you could be right. But look at what happens after that. If CO2 is sequestered undergound, not just here but all over the world and the demand for this kind of technology begins to grow - then what happens? Particularly what happens in parts of the world where the earth is a little less stable? One thing is for sure, I would not be taking up residence anywhere within 200 miles of the San Andreas fault. Come to think of it, make that 2,000 miles.
Then there is the matter of how much in the way of poisonous pollutants will leach into the aquifers in the near vicinity of the CO2 storage. I could go on and talk about the engineering problems of actually capturing the waste gases and storing them in a way which is safe and economically viable. Believe me, it hasn't happened yet. In fact so far, most of the discoveries have been negative. So where do we go from here? I know there are a lot of people going around pulling their hair out screaming: But we need Coal! We have too much invested in it.
My primary agreement is with the argument that we should continue with coal as an energy source in the short term. However I would also argue that any coal burning plant be made responsible for their carbon (dioxide) footprint in two ways. Firstly they should change the design of their coal burning so that the waste gases are cooled and reticulated through large forest/plantation areas around the power plants. Have you ever take a close look at a power station. The damn things are full of coal, slag waste and huge concrete silos. More importantly the gases given off by the furnaces are passed up huge chimneys into the atmosphere. If the CO2 is allowed to escape into the atmosphere while hot then it will be blown away and dissipated into the atmosphere. If the gases are passed over cooling pipes and then collected in storage areas in stages where they become lowered in temperature, they can then be passed into valleys below the power station where they can be absorbed by trees and other vegetation.
The secondary focus of the power industry should be on transition. Coal should not be subsidised and supported, not even if it goes in the direction where it is more carbon neutral. Why? Because by its very nature, the burning of coal will always result in CO2 emission.
As a choice of power supply, coal should be taxed to help implement the transition to new technology. Some economists may see this as being unfair, something like paying for the bullet for your own execution. In a sense there is truth is this, but it is the sort of equation that makes sense.
It gives us the outcome we are looking for, escape from a coal based power industry to a supply of power which does not impact negatively on the environment. This isn't just something we need. We need it as soon as possible. We have to start moving in that direction and we have to start moving now!
Coal is not the answer. Coal is part of the problem - probably a major part - and we have to start moving away from this choice of power provision now.
King Coal might not be dead, but he is extremely sick. The only problem is that nobody wants to give him the news. Nobody has wanted to believe the messenger. So write it up. Write it large. Tell the world that the land down under has heard the message and is taking action - now!
I have laid out some of my preferred options elsewhere on this website. Meantime back to coal. First off, I do recognise that an immediate transition to other energy sources ain't going to happen over night. Other strategies need to be in place. Infrastructures need to be put in place and more importantly other power sources need to be made financially and operationally viable. It takes time, planning, experimentation, testing and finally roll-out and implementation. All accepted and given.
My objection is this short sighted focus on Clean Coal and the sequestering of CO2 waste gas. First off the sequestering of CO2 ain't practical. It's costly as a concept. It can't be made to work is a way that makes sense and frankly my dear, it's damned right dangerous as an engineering concept. Let's take it as a given that the engineers finally put together a plant where they capture the off-gas from a power station. They cool it and pipe it underground in a compressed form. Now CO2 is a funny substance. It doesn't like to exist as a liquid. You've heard the term, dry ice? Well children, that is CO2 in solid form. It does exist in a transition state when going from solid to gas, but that is usually from combining with water vapour in the earth's atmosphere.
So we get this huge cave and pipe the CO2 in under pressure. What happens? Well initially there won't be much pressure and the CO2 will change to a gas and start looking for a way out. But let's be optimistic - a dangerous supposition perhaps but still - let's suppose that the planners get it right and we end up with huge cave complexes filled with solid CO2. What happens then? Well for one thing it depends on how pure the CO2 is. Call me a cynic, but I would bet that any gas-off from a power station will have a nice little poisonous cocktail which would be piped along with the CO2 into these depths of the Plutonic underground.
Now let me paint a picture of some of the disasters that could and in some cases, are almost certain to happen. First off, Australia is in one sense the lucky country in terms of tectonic stability. We don't get much in the way of earthquakes or volcanic activity. Let us picture an increasing volume of CO2 based sludge growing underground. This sludge would combine with water under pressure and have the potential to be a nice little lubricant. Now some scientists would take out their notebooks and calculators and look at the engineering and say that I was scare mongering. To them I would say, in the first twenty five years or so you could be right. But look at what happens after that. If CO2 is sequestered undergound, not just here but all over the world and the demand for this kind of technology begins to grow - then what happens? Particularly what happens in parts of the world where the earth is a little less stable? One thing is for sure, I would not be taking up residence anywhere within 200 miles of the San Andreas fault. Come to think of it, make that 2,000 miles.
Then there is the matter of how much in the way of poisonous pollutants will leach into the aquifers in the near vicinity of the CO2 storage. I could go on and talk about the engineering problems of actually capturing the waste gases and storing them in a way which is safe and economically viable. Believe me, it hasn't happened yet. In fact so far, most of the discoveries have been negative. So where do we go from here? I know there are a lot of people going around pulling their hair out screaming: But we need Coal! We have too much invested in it.
My primary agreement is with the argument that we should continue with coal as an energy source in the short term. However I would also argue that any coal burning plant be made responsible for their carbon (dioxide) footprint in two ways. Firstly they should change the design of their coal burning so that the waste gases are cooled and reticulated through large forest/plantation areas around the power plants. Have you ever take a close look at a power station. The damn things are full of coal, slag waste and huge concrete silos. More importantly the gases given off by the furnaces are passed up huge chimneys into the atmosphere. If the CO2 is allowed to escape into the atmosphere while hot then it will be blown away and dissipated into the atmosphere. If the gases are passed over cooling pipes and then collected in storage areas in stages where they become lowered in temperature, they can then be passed into valleys below the power station where they can be absorbed by trees and other vegetation.
The secondary focus of the power industry should be on transition. Coal should not be subsidised and supported, not even if it goes in the direction where it is more carbon neutral. Why? Because by its very nature, the burning of coal will always result in CO2 emission.
As a choice of power supply, coal should be taxed to help implement the transition to new technology. Some economists may see this as being unfair, something like paying for the bullet for your own execution. In a sense there is truth is this, but it is the sort of equation that makes sense.
It gives us the outcome we are looking for, escape from a coal based power industry to a supply of power which does not impact negatively on the environment. This isn't just something we need. We need it as soon as possible. We have to start moving in that direction and we have to start moving now!
Coal is not the answer. Coal is part of the problem - probably a major part - and we have to start moving away from this choice of power provision now.
King Coal might not be dead, but he is extremely sick. The only problem is that nobody wants to give him the news. Nobody has wanted to believe the messenger. So write it up. Write it large. Tell the world that the land down under has heard the message and is taking action - now!
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