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How an oil refinery works

construction-physics.com

11–20 of 209 posts

Re: How an oil refinery works

#13
post #6

Cool to see how when people talk about “transitioning off oil” it's more than replacing gasoline in cars. It's replacing this entire global machine.

Oil is cooked. BYD is filing 52 patents every single day and has a 700 km in 9 minutes vehicle available TODAY ! Charging by Solar is going to be the norm. Watch : https://www.youtube.com/watch?v=vgCYYrhL-kE

Re: How an oil refinery works

#14
post #5

The article is quick to point out the huge role of oil in the modern energy mix. It also fails to note that most of the energy ends up us waste heat. The so called "Primary energy fallacy". Other than that, it's a great read.

To me (as someone who has worked on oil rigs, oil pipelines, oil refineries, and chemical plants), crude oil seems far more valuable as a material than as an energy source. It feels like a damned shame that we're still combusting so much of it for heat rather than reserving it for physical materials.

I understand the ways that economics are very important, and that the economics still currently favor burning a large fraction of the crude oil. But I also know that the right kinds of investments and a bit of luck can often change those economics, and that would be nice to see.

Re: How an oil refinery works

#15
post #8
post #2

This is a really good overview of oil refining. I'll add a few things. 1. The light and heavy distinction is covered by a measure called API gravity [1]. The higher the API gravity, the lighter the crude; 2. Refiners mix different crude types depending on what kind of refined products they want to produce; 3. Heavy crude tends to be less valuable although it's essential for some applications. Lighter crude produces g…

> they're almost impossible to get permission to build now While I do agree there's a ton of regulatory hurdle to cross to build a new refinery, lots of interviews with oil executives have stated the economics of building a new refinery aren't always great. The reasons why they aren't building isn't necessarily because the regulatory hurdles are too high, its that they don't think they'll end up making any money buil…

>While I do agree there's a ton of regulatory hurdle to cross to build a new refinery, lots of interviews with oil executives have stated the economics of building a new refinery aren't always great. The reasons why they aren't building isn't necessarily because the regulatory hurdles are too high, its that they don't think they'll end up making any money building them. The future demand of many refined products are uncertain, adding a lot of new capacity is quite a capital risk.

This is a circular statement.

The regulatory hurdles are a large part of what drive cost.

I know a venue that wants to pave a dirt lot so they can better use it for stuff. It doesn't pencil out because of stupid stormwater permitting crap that'll add $250k to the project. It'd never pay off in a reasonable timeframe. So it just continues to exist in its current grandfathered in capacity when even the most unfavorable napkin math shows that what they want is an improvement.

A few weeks ago I was party to the installation of a perimeter railing on a flat commercial roof. The railing cost more than the rest of the job it was there for. Something tells me they won't be pulling permits for petty electrical work ever again.

Oil and most other heavy industry is faced with the same sort of problems with more digits in front of the decimal.

Re: How an oil refinery works

#16
post #6

Cool to see how when people talk about “transitioning off oil” it's more than replacing gasoline in cars. It's replacing this entire global machine.

Oil is cooked. BYD is filing 52 patents every single day and has a 700 km in 9 minutes vehicle available TODAY ! Charging by Solar is going to be the norm. Watch : https://www.youtube.com/watch?v=vgCYYrhL-kE

> Oil is cooked. BYD is […]

By "vehicles" do you mean "cars"?

Because airplanes are also a type of vehicles. So are container ships. Neither of which are very practicable with pure electric AFAICT, and are integral to modern life. (Though more marine hybrid could be practical.)

I think there should be more of a push for BEV/hybrid cars (and transport trucks), and think more home electrification would be good (though air sealing and insulation are more important, relatively speaking). But let us set reasonable expectations of what is possible at various timeframes (and not let the perfect be the enemy of the good/better).

Re: How an oil refinery works

#17
post #6

Cool to see how when people talk about “transitioning off oil” it's more than replacing gasoline in cars. It's replacing this entire global machine.

Cars are the most familiar to the everyday user, which is why it's the most common in perception. It's also actually one of the easier ones to solve (ie it's basically done).

Trucking is technically not to hard but logistically difficult. Aviation is extremely technically challenging. Shipping is economically difficult. Electricity generation has lots of factors, there's a lot of generation that can and has been changed easily, but some generation which is harder to switch.

If you get outside of oil into CO2 generally, there's even thornier issues. Concrete production, for example.

If you are seriously interested in these issues, I highly recommend https://www.youtube.com/c/EngineeringwithRosie

Re: How an oil refinery works

#18
The article does a good job of showing how a typical barrel of oil is converted into a dozen or more distinct usable products.

It would be helpful to also have a chart that shows how much gasoline or diesel as a percentage of each barrel is produced. It would be a bit variable, since not all crude oil is the same, but I think it would be close for most of it.

Some people think when diesel and regular gas prices diverge, that they should just be able to produce one at the expense of the other; but the distillation process shows that they are fundamentally different.

Re: How an oil refinery works

#19
post #5

The article is quick to point out the huge role of oil in the modern energy mix. It also fails to note that most of the energy ends up us waste heat. The so called "Primary energy fallacy". Other than that, it's a great read.

> It also fails to note that most of the energy ends up us waste heat.

I've heard the statistic that 40% of the total oil pumped out of the ground just to transporting oil. We use almost half just to move it to and fro before even using it.

Is this accurate?

Re: How an oil refinery works

#20
post #8

Earlier quoted context omitted.

> they're almost impossible to get permission to build now While I do agree there's a ton of regulatory hurdle to cross to build a new refinery, lots of interviews with oil executives have stated the economics of building a new refinery aren't always great. The reasons why they aren't building isn't necessarily because the regulatory hurdles are too high, its that they don't think they'll end up making any money buil…

>While I do agree there's a ton of regulatory hurdle to cross to build a new refinery, lots of interviews with oil executives have stated the economics of building a new refinery aren't always great. The reasons why they aren't building isn't necessarily because the regulatory hurdles are too high, its that they don't think they'll end up making any money building them. The future demand of many refined products are…

> This is a circular statement.

Its not if you get the context.

> The regulatory hurdles are a large part of what drive cost

I agree, they are a large part. The things they have to do to meet the standards are expensive.

The claim was "impossible to get permission to build now". As in, the government won't let them build it. That the standards are just technically impossible to meet. They can get the permission to build it any day. Its possible to meet these standards. They just don't think it'll be worth it when they have to do it right.

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