DPF Regeneration driving me crazy...

[IndyJay]

Diesel is not a byproduct of gasoline.

Diesel is a crude oil product that does not take as much energy to produce as gasoline.

While not necessarily a "by product", it is a co-product. The distillation process produces many streams; from very light hydrocarbons at the top to a heavy grease at the bottom, and everything in between. Any commercial distillation process must find a way to deal with all of the streams or the whole thing eventually eventually comes to a stop due to "no home". The prices of the saleable products must be adjusted to allow for environmentally friendly disposal of non-saleable waste streams.

Needless to say, every effort is made to find a use for everything coming off of the still, even if you must give it away. Similar to the pork industry's "everything but the squeal" model.

 

[groundcover]

Got to thinking about the pollution issues on these smaller diesels the other day. I have a Kubota 5240 that is pre emission that " they will have to pry out of my cold dead hands "!
Since that '08 machine I have bought three Kubota engines ( zero turn, mini track loader and tractor ) and have stayed under the 25 horse power threshold just to avoid the joys of emissions issues.
So just how much pollution do you think the billionaire boys rocket club is releasing burning K1 and LOX ? I would venture to guess that in the first three seconds of ignition of one of Bezos or Musks rockets more pollution is released than in a lifetime of me running my small diesel tractors!

 

[Hall00]

While not necessarily a "by product", it is a co-product. The distillation process produces many streams; from very light hydrocarbons at the top to a heavy grease at the bottom, and everything in between. Any commercial distillation process must find a way to deal with all of the streams or the whole thing eventually eventually comes to a stop due to "no home". The prices of the saleable products must be adjusted to allow for environmentally friendly disposal of non-saleable waste streams.

Needless to say, every effort is made to find a use for everything coming off of the still, even if you must give it away. Similar to the pork industry's "everything but the squeal" model.

It is one of dozens of products coming from a barrel of crude oil. The myth that diesel is a waste stream or not a wanted product is nonsense.

There is no "giving away" of anything coming out of a refinery. From the ethane to the coke, it all has value and depending on market conditions can be worth more than the mainstream products.

Molten sulfur is a great example, prices got so high a few months ago that it paid for 70% of the barrel of crude it came in. My refinery hit record rates and profits because the charge prices were so good.

 

[Jstpssng]

So just how much pollution do you think the billionaire boys rocket club is releasing burning K1 and LOX ? I would venture to guess that in the first three seconds of ignition of one of Bezos or Musks rockets more pollution is released than in a lifetime of me running my small diesel tractors!

You are absolutely correct yet for me that isn't the question. I do my best to reduce unnecessary waste and pollution, while still accomplishing what I want to do. (My tractor is idling outside right now, and soon I will have to start up my two stroke snowsled to move it.) Yet why let them run unnecessarily? I don't mind having emission controls on my machines because in the overall scheme of things, the only person using them benefits is me.
I also notice the stench when I get off my tractor and onto my father's L2800 which doesn't have them.

 

[IndyJay]

It is one of dozens of products coming from a barrel of crude oil. The myth that diesel is a waste stream or not a wanted product is nonsense.

There is no "giving away" of anything coming out of a refinery. From the ethane to the coke, it all has value and depending on market conditions can be worth more than the mainstream products.

Molten sulfur is a great example, prices got so high a few months ago that it paid for 70% of the barrel of crude it came in. My refinery hit record rates and profits because the charge prices were so good.

I did not say it was a waste stream. It is a co product. You can't feed crude and make only diesel, nor only gasoline. There is a fairly fixed ratio of what comes out. Demand drives price for each outstream.

Diesel once was cheaper than gasoline. That was when nearly everyone ran gas. When diesel pickups became popular the price of diesel went up due to higher demand.

 

[Jstpssng]

Diesel once was cheaper than gasoline. That was when nearly everyone ran gas. When diesel pickups became popular the price of diesel went up due to higher demand.

I believe that happened when low sulfur fuel was mandated... or perhaps it was just a coincidence the two occurred at the same time.

 

[Hall00]

I believe that happened when low sulfur fuel was mandated... or perhaps it was just a coincidence the two occurred at the same time.

The infrastructure investment needed to make <15ppm sulfur diesel is a huge reason diesel jumped.

Also Uncle Sug added more tax per gallon somewhere in the late 90s I think.

 

[Hall00]

I did not say it was a waste stream. It is a co product. You can't feed crude and make only diesel, nor only gasoline. There is a fairly fixed ratio of what comes out. Demand drives price for each outstream.

Diesel once was cheaper than gasoline. That was when nearly everyone ran gas. When diesel pickups became popular the price of diesel went up due to higher demand.

I didn't say you did.

The "byproduct of gasoline" crowd seem to think it is. Gasoline is easier to convert to more purified streams than diesel so the ratio isn't as fixed as you think. Those decisions are made by commercial business service types. We have lots of knobs to adjust the lighter end products in the refinery to make whatever the powers that be decide.

 

[Tony H]

Got to thinking about the pollution issues on these smaller diesels the other day. I have a Kubota 5240 that is pre emission that " they will have to pry out of my cold dead hands "!
Since that '08 machine I have bought three Kubota engines ( zero turn, mini track loader and tractor ) and have stayed under the 25 horse power threshold just to avoid the joys of emissions issues.
So just how much pollution do you think the billionaire boys rocket club is releasing burning K1 and LOX ? I would venture to guess that in the first three seconds of ignition of one of Bezos or Musks rockets more pollution is released than in a lifetime of me running my small diesel tractors!

And how much Jet fuel is dumped from each place before landing?

 

[IndyJay]

I believe that happened when low sulfur fuel was mandated... or perhaps it was just a coincidence the two occurred at the same time.

Actually I think that happened because diesel was a lot cheaper than gasoline. I think the low sulfur mandates came along because of the increased use of diesel with small trucks.