by Ron Patterson » Sat 12 Apr 2014, 11:04:48
Dissident wrote:
$this->bbcode_second_pass_quote('', 'V')enezuela had a development program. One of the products was called Orimulsion, which could be burned in large diesel engines such as those used in ships. There was political disruption a few years ago due to nationalization.
Orimulsion was basically 70% bitumen and 30% water. It could not be burned in diesel engines. It was basically boiler fuel. Most large ships are powered by steam turbines however and it made a great fuel for them.
I really don't know why it was discontinued but I suppose it was for two reasons. First there were always problems when dealing with the Venezuelan government. (BP was a partner with Petrobras in the venture.) And second it was basically a substitute for coal in power plants and sold for a lot less than crude oil.
But the Venezuelan bitumen is very difficult and and expensive to produce, owing to its very high viscosity. (It's basically tar.) And add to that the problems with dealing with the Venezuelan government causes all international oil companies to shy away. They fear getting nationalized and their assets seized for pennies on the dollar. Venezuela has done that in the past and there is no guarantee they won't do it again.
http://en.wikipedia.org/wiki/Orimulsion$this->bbcode_second_pass_quote('', 'R')aw bitumen has an extremely high viscosity and specific gravity between 8 to 10 API gravity, at ambient temperatures and is unsuitable for direct use in conventional power stations. Orimulsion is made by mixing the bitumen with about 30% fresh water and a small amount of surfactant. The result behaves similarly to fuel oil. An alcohol-based surfactant recently replaced the original phenol-based version; improving the transport properties of the fuel and eliminating the health concerns associated with the phenol group of surfactants.