Not true! This process produces just as much CO2 (or maybe even a bit more) as every other power plant. The only thing gained is that the CO2 from this process winds up separated from the rest of the gasses that are produced.
It's a pipe dream to think they can "sell" the CO2. If there were a market for all the CO2 produced by power plants today, someone would already be extracting and selling it. With electric cars and heating, there would be many times more CO2 produced, as well.
Excellent point.
Not true! According to the article the CO2 separated and used in the process and the excess contained.
There is a market for a lot of the CO2 produced by power plants. But they don’t have a low-cost process to extract the CO2 from all the nitrogen and other gases and soot that’s in the exhaust stream. So they can’t produce it cheaply enough for the oil EOR industry. Also, the existing power plants weren’t designed to remove the CO2 from the exhaust stream, so it would take a lot of costly retrofitting of machinery and pipes to extract the CO2 for sale.
This process sounds very promising, especially the claims of extra efficiency at converting the energy in the natural gas to electric power. But I don’t know where developing countries that don’t have much of an oil industry (like India) are going to put all the CO2 extracted by this new process. They could just skip that step, release the CO2 into the air, and just take advantage of the higher efficiency (which should lower emissions of everything, including CO2, compared to conventional power plants.)
The gases produced are trace amounts of nitrogen oxides, trace amounts of sulfur oxides, significant amounts of water vapor, and the remaining portion is carbon dioxide. The nitrogen and sulfur compounds dissolve in the water condensate formed at a cooler portion of the recycling process of the CO2. The acids formed are extracted for sale as industrial feed-stocks. Using or not using the pure water product for cooling purposes affects the overall efficiency by .5 to 1 percent. About 3% excess inventory of CO2 working fluid formed from the fuel combustion would be continually tapped off at a 30 bar pressure level for pipeline transport to oil reservoirs projects. This Senate Committee report provides some additional detail.
Can’t they split the CO2 and re-use the oxygen in the process, and the carbon into other products eg. fertilizer?