Trianon
Golden Member
Originally posted by: charrison
When it is simply too expensive, we will do something else. Problem solved.
I would like to know what it would be? Warp drive?
Originally posted by: charrison
When it is simply too expensive, we will do something else. Problem solved.
You're missing the point then. We're talking about about agricultural waste such as turkey guts and animal offal that currently is usually getting thrown away in a landfill and certainly not eaten. The grain also already been expended whether the turkey guts are sent through the Thermal Depolymerization process or not. This agricultural waste produced by the US alone can equal 4 billion barrels of oil and/or its natural gas equivalent in energy per year. The technology also turns our waste currently going to landfills into an asset, and we might actually start digging up old landfill to put items through the thermal depolymerization process. This will potentially allow us to meet all our oil and gas needs. (While there might be a longterm issue once we run low on trash and would face an energy crunch again, this gives us time to work on other sources such as viable Nuclear Fusion powerplanets.)Originally posted by: 0marTheZealot
^
I've read about TD, and I've come to the conclusion it will only be a bit player, much like "alternative" oils like shale, sands, and kerogen. It sounds nice, but it is not unsustainable (600 million tons of turkey guts?! wow!, the amount of grain needed to feed that would be enormous).
The problem is scale. If we had a sustainable population, like around 2 billion world wide, then this technology would be all we would really need to offset declines from elsewhere. Right now, it is a proverbial drop in the bucket (or 5 if you wish)
According to info on their website it takes about a year to build a plant. Future planets they are currently talking about building will be able to produce 1,000 barrels of oil per day, and they think individual planets capable of producing 5,000 barrels of oil per day would be profitable. Even at current oil prices and their current cost structure, the planets are already quite commercially viable. They were would become an extremely profitable proposition if oil prices went up somewhat more. According to the company's website it take about a year to build one TDP plant.Originally posted by: 0marTheZealot
http://en.wikipedia.org/wiki/Thermal_depolymerization
This is what I used mainly in my decisions along with numbers of oil production. It just doesn't look feasible to ramp production up that much to offset decline (on the order of 2 mbd per year every year after the peak).
This article was written at the end of 2003 and mentions how oil is being produced and sold to a nearby powerplant.Originally posted by: Engineer
Well, it does use other forms of waste (other than turkey guts) and it could cut our landfill trash problems tremendously. Also, for a 15% useage in energy to get 100% (i.e. 85% efficient), I can't see how it would be bad at all. When the world runs out of oil from pumping, this may go a long way to helping.
Also, is there any follow ups to this (written in 2003)?
http://www.heise.de/tp/r4/artikel/18/18953/1.htmlIn 2003, [extern] Changing World Technologies made headlines in the United States and abroad with the announcement that it would be able to make oil out of just about anything. The company had been running a plant that processed seven tonnes of turkey offal per day into oil at a cost of around $15 per barrel. After a larger plant that processes 238 tonnes of turkey offal per day did not go into operation on time (due - the company says - to construction errors, not problems in the technology itself), skeptics began to wonder whether this was another fly-by-night operation. Now, at the end of 2004, all systems are go, with the plant running at 80% capacity. Craig Morris spoke with Brian Appel, the company's CEO, for Telepolis.
Thousands of plants all over the country is easily sustainable once they start getting built and raking in money. There is a reason the Discovery article was talking about the number they were. The one thing I'll have to check to see when you think peak oil is going to hit. A point worth noting is that is TDP plants get going before then, they take the date when peak oil hits out further. Your claim that TDP plants emit a ton of CO2 is highly misleading, the CO2 is turned into useful end products by the process. Landfills are a onetime deal but can last quite some time, and our constant flow of new garbage is a continued source. Another enourmous non-renenewable source is that the process can be used to convert dirty coal and oil shale into clean burning oil in gas, which can further extend the point until we hit an energy crunch. (See this link for a listing of items which can potentially go through TDP)Originally posted by: 0marTheZealot
No you are missing the point.
The fact is that a single TD plant produces only 200-500 barrels of oil a day. Assuming 1,000 barrels is the net efficency attainable for a TD plant you would need:
1. 4 billion barrels / 365 = 11 mbd per day. (current imports by the US, growing at a rate of 2-3% a year)
2. 11mbd / 1,000 barrels per plant per day = 11,000 new plants.
Eventually however, you will run out of landfills and agricultural wastes will not be able to keep up with demand. Remember, depletion, modeled after an ideal curve by the Hubbart model, is conservatively 2-5%. Assuming an average of 3% decline, we will be losing .03 x 30 billion barrels a year (which seems will be the peak, we are currently mining about 27 bpy), which amounts to 900 million barrels per year for the first year alone, next year, you will lose 27bpy x .03 which equals 810 million barrels per year. Two years after the peak, we will have lost (810 + 900 million barrels per year)/365 which equals about a 4.5 million barrel per day decline. When you put it in this perspective, it becomes pretty clear that TD will never make up decline. You would need thousands of plants across the country to process wastes, and that number will have to exponetially increase at the same rate of decline. If production peaks higher, say at 45 billion barrels a year (which is 123 million barrels of oil per day), then the decline will be even higher. For example, two year caculations will be
.03 x 45 bpy = 1.35 bpy decline
.03 x (45-1.35) = 1.3095 bpy decline.
1.35bpy + 1.3095bpy / 365 = 7,286,301mbd loss. This is double of what the US imports yearly.
This is of course assuming 3% steady decline and an ideal state (which never exists). If there has been secondary recovery at major fields and ill practices on declining fields, we could see decline rates of up to 15%.
With TD, we can't convert fast enough to save our economy. Landfills are a one time deal with that sort of material. We could set up a closed loop system (inputs = outputs from another facility/branch) but that will be a smaller number than what will be needed. After exhausting all of the landfills, we will have to rely on wastes being generated at a finite rate which will be smaller than the endowment in landfills. Additionally, TD plants exhaust a ton of CO2 (which can be used in the process but also leaves as waste) and produce other not so happy chemicals.
A sustainable society would be great, because we would able to do all sorts of things to offset decline due to the smaller scale and nature of problems. As it stands, I doubt if we can offset depletion with enough alternatives to maintain business as usual. Remember, we aren't at the edge of electricity production, which oil is rarely used for. Oil is a transportation fuel first and foremost. The alternatives are few and far apart. Biodiesal is great, but again not ratchatable up to a scale that is meaningful, hydrogen is not for reasons I have stated before, and electricity is too diffuse to be usable right now. Retrofitting and producing 50 million cars a year in America (a very large and probably insurmontable task, seeing as how we need to make changes now), it will take at least 6-8 years to retrofit every car. A more probable number is 500,000 cars, which will take 60 years. Side by side usage of biodiesal and electricity will require at least a few trillion dollars of infrastructure remodeling, for engines to be compatiable, for the biodiesal to be made (algae farms, oily plant plantations, workers, farmers, harvesters, refining, delivery, concentrating, different blends for different regions in the US, delivery systems of the fuel such as diesal stations, and competetive fuel matching and the same follows for TD plants simultaneously, however much of the work is already done because you get light crude outta the plant). This will all take at least a few decades to ratchet up production to levels that will be able to be competetive with oil. And what happens when TD/Biodiesal/other become limiting? We will be discussing the same problem with a different name when that time comes. So long as we have a culture of unrestricted, uncontrolled growth, something will always become limiting.
EDIT : Your source has to be wrong, 300-400 barrels a month is laughable (10 barrels a day?). I can get that much out of the soil by randomly digging deep enough. My caculations are based upon a 1,000 barrel per day mean for all plants because some will produce more and some less, however, the avg. point I placed may be low or high, I simply picked a median number that looked safe to me.
Uh, that kind of plant building actually should be doable if its profitable. There is a huge amount of construction capability in the United States and there is nothing all that increadibly special about these plants. There are a huge number of sources of agricultural waste alone, in different locations all across this country. That's where the 4 billion barrels of oil per year number comes from.Originally posted by: 0marTheZealot
Did you simply ignore my caculations? You would need ~4-7,000 new plants a year every year to offset decline.
This isn't economics, money is irrevelant here, this is about physical limits.
In the grand scheme of things, 200,000 barrels (equivalent to 200 plants, not a trivial task considering that we only have 1 such plant) is practically nothing.
As for the date of peak, it varies depending on the source. From current events, it looks more and more likely that 2007 or 2008 is going ot be the peak oil date. For one thing, no mega projects (500 million barrel fields) are coming online in 2007/2008. Those fields have the ability to produce 100,000 barrels a day (yes I know I contradicted myself sort of, a mega field used to be characterized by its ability to produce 1mbd or more). The USGS places a peak date at 2032 which the industry basically laughs at. They incorporate non-technical factors, which is engineer speak for making sh!t up. They place OUR at 3 trillion barrels, while industry places it at 1.8 - 2.6 TB with a confidence interval of 95%. We have 6mbd of additional production coming online during 2005, however, total oil production is only going to go up by about 3mbd. The rest is simply offsetting decline. We are not too far unfortunately if current indications are to be believed.
The answer is that the first one is ironing out a bunch of the bugs, oncee this is done building more becomes far more attractive. Most of the links I've seen focus on about the next 5 or so plants and where they are likely to be built, longer term plans are a little less clear. Basicly you're talking about a technology which wasn't viable commercially untill recent technological breakthroughs at Changing World Technology. The point about the commercial viability of the plants is worth making here. If oil prices are at 50$ a barrel and the thermal depolymerization process hits its near term goal of being able to make oil for 10$ a barrel, the company can make 7.3 million dollars per year, and make back the plant's construction costs within 3 years after which they start raking in the money. (The actual profits may be somewhat higher if the oil production costs given in the article don't account for the additional commercially sellable products produced through the process along with the fact that the company should be able to charge companies to dispose of their waste for them given there would otherwise be waste disposal costs the company would have to pay.) This in conjuntion of plenty of large agriculatural waste sources should start leading to a boom in plant construction.Originally posted by: 0marTheZealot
I'd also be wary of public relations speak concerning what TD can produce. As there is only 1 plant operating, strong domestic incentive to reduce foreign imports and readily available fuel source, there should be the question why isn't this being exploited. Can you link to me how many TD plants are planned for the next 10 years? Those numbers seem outrageously optimistic, designed to latch and sell TD plant designs to others. I am willing to wager that the ultimate number will be much much less.
Originally posted by: Trianon
Originally posted by: charrison
When it is simply too expensive, we will do something else. Problem solved.
I would like to know what it would be? Warp drive?And where would you get energy and materials to realize that technology?
Originally posted by: 0marTheZealot
No you are missing the point.
The fact is that a single TD plant produces only 200-500 barrels of oil a day. Assuming 1,000 barrels is the net efficency attainable for a TD plant you would need:
Actually, 500 barrels per day. But I know you meant that.Originally posted by: Aegeon
The plant's capacity is 500 barrels per month, and 80% of that is 400 barrels per month. For awhile they were down to 200 barrels per day due to complains about smell issues causing them to have to periodicly shut the plant down and try to fix things, but it looks like they are ironing out those problems now.
Edit: I just fixed a significant typo.
Originally posted by: stratman
Nuclear fission. We've made some pretty sweet advancements in nuclear power in the last little while. Once the public aversion to it dies down, it will hopefully become the primary power supply. It's a much more sustainable source (with regards to environmental impact as well as world reserves) than oil and certainly coal.
Anyone have any numbers for cost/power produced ($/kW or something) for different energy supplies? I wonder how much more expensive it is than oil or coal.
Originally posted by: 0marTheZealot
hahahhah Gordon Freeman is the greatest man alive.
Fission are red herrings in the discussion of oil. They solve no problems regarding oil. You can't use nuclear power for transportation (unless you bring in electric cars, and those failed unfortunately). Hell, we are building new plants simply to offset decline. Instead, we are building natural gas and coal plants because they are much easier and the resource base is much larger. And nuclear power plants provide almost no relief with respect to oil. In fact, it would probably increase demand as you would need to build materials (which have oil components), provide transportation to all the workers, provide fuel for construction vehicles, and use solvents and such to produce materials to build the plants.
Fusion is a different story, simply because of the scale of energy. Limitless fuel, all you need is simple salt water, incredible amounts of energy and competitive in an energy sense. Fusion would solve most every problemexcept those due to land overusage and such. But as an energy source, fusion is probably my last hope for a business-as-usual society.
That, and local governments vote against wind power because of the "view".Originally posted by: ReiAyanami[...]
also, wind power is competitive at $30/barrel oil, yet barely any money is being invested in wind power in US (a few hundred million vs tens of billions for oil exploration) . . .