Does oxygen ignite oil? Let's check now

Does oxygen ignite oil?

There are a lot of smart people who have never dealt with oxygen, all shouting with one voice, saying that if there is a drop of oil somewhere, then in combination with pure oxygen an explosion or spontaneous combustion and fire will definitely occur. No one, of course, has ever seen anything like this, but everyone claims it.
The theory of their myth can be understood: type oxygen is the strongest oxidizing agent and in combination with hydrocarbons (which make up the oil), it oxidizes them, releasing a huge amount of heat.
Rumors are rumors. Well, let's check it out.

Let's check the myth: will oil catch fire from oxygen?


We take a gas cutter, open the oxygen supply and stick it into an oiled rag.
Does oxygen ignite oil?

Nothing happened!
We simplify the task by adding gasoline. Now we have an oil-gasoline rag in front of us. There is no better environment for fire.
Does oxygen ignite oil?

We also place a burner on it with a supply of pure oxygen.
Does oxygen ignite oil?

And again nothing happens!
We bring the lighter to the burner, making sure that oxygen is coming out and not gas.
Does oxygen ignite oil?

Q.E.D.
But if you first light a rag and then fan the embers with oxygen.
Does oxygen ignite oil?

There will be a result, but in fact they could have been inflated with breathing anyway.
Does oxygen ignite oil?

The result is this:


Oil does not ignite due to oxygen!
Spontaneous combustion is possible only in two cases:
  • When oil and oxygen are under high pressure (diesel engine effect).
  • Or when the oil is heated to a very high temperature, the auto-ignition temperature. Although under such conditions the oxygen contained in the air would be sufficient.

Watch the video


The video contains some strong language, so be warned.
come back
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Comments (12)
  1. Lev
    #1 Lev Guests October 23, 2019 10:39
    7
    But what about the effect of a dirty oil rag thrown on the valve of an oxygen tank?
    1. Well
      #2 Well Guests October 23, 2019 11:05
      8
      Same thing)) It will explode, don’t do that)
    2. Dmitriy
      #3 Dmitriy Guests 23 October 2019 16:51
      1
      Yes, they scared me at work about this, but I always doubted it and thought that some other factors were needed for the oil rag on the oxygen cylinder tap to catch fire.
    3. Alex
      #4 Alex Guests 23 October 2019 17:45
      1
      It happened once at work: when working for a long time, the gearbox got so hot that it was impossible to handle it with bare hands. I still don’t understand why?
  2. Vladimir
    #5 Vladimir Guests 24 October 2019 13:15
    3
    There is a cutter I know at one of the scrap metal depots, I came to him to cut off a piece of a blank, he cut oil everywhere in a diesel locomotive, including puddles and in all the technological holes, I was surprised at how he was not afraid, he explained that oxygen with oil is dangerous only in the gearbox, in hoses and under pressure. That's all, no more, not a rag on the valve, and no burning oil.
    1. Michael
      #6 Michael Guests 7 January 2020 21:58
      1
      There was an interesting case, after a long downtime of a diesel generator at a local poultry farm, the pressure in the air receiver dropped (the engine was diesel, a marine piston with the diameter of a bucket), and it started like a tank engine (compressed air) in the absence of a powerful compressor, local safety engineer , took responsibility and started the diesel engine from an oxygen cylinder (all the conditions for an explosion, pressure and oil were present), everything worked out, the generator was started.
  3. yay
    #7 yay Guests October 25, 2019 00:22
    9
    Read the instructions on gas welding, damn it. and don’t listen to any talk.....s. Once is enough for oil to get between the gearbox and the tank, and that’s it, music will play but you won’t hear it.
  4. Guest Yuri
    #8 Guest Yuri Guests October 25, 2019 12:50
    4
    You would add your own oil before the gearbox, where the pressure is higher, after the gearbox it’s too late.
  5. mechanic
    #9 mechanic Guests 25 October 2019 20:57
    7
    correctly, oil with oxygen does not ignite, but explodes, and only when under pressure. To do this, it is enough to stain the gearbox nut or the cylinder thread with oil. PS and yes there are few witnesses left :=\
  6. Guest Sergey
    #10 Guest Sergey Guests 27 October 2019 18:20
    1
    this rule is taken from life and not from your experiences
  7. garry
    #11 garry Guests 27 October 2019 21:15
    2
    Don't listen—but try! Before my eyes, the welder poured oil onto the workbench and opened the oxygen on the burner - the oil began to gurgle and boil and then caught fire - whoever doesn’t believe it, let him try it!!!!!
  8. Guest Alexander
    #12 Guest Alexander Guests 28 November 2019 19:42
    2
    During my military service I witnessed the reaction of oxygen with oil. Divers received a new compressor to pump oxygen into diving equipment. The depreservation was carried out somehow, but the preservative lubricant remained. As soon as they opened the valve of the oxygen cylinder, there was quite a loud noise. The head mounting bolts flew off like matches. And the bolts were M18.