×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

oil refining and caustic waste

oil refining and caustic waste

oil refining and caustic waste

(OP)
I need to know the process of oil refining and why it generates caustic wastes can anyone help? thanks

RE: oil refining and caustic waste

Homework?

RE: oil refining and caustic waste

Some oil products(kerosene, diesel) can containt naphtenic asids. in order to remove them caustic soultion is used and as outcome of this some units generate caustic wastes. Caustic soda is used also for Kerosene demerkaptanization.

RE: oil refining and caustic waste

Some also contain naphthenic acids.

HAZOP at www.curryhydrocarbons.ca

RE: oil refining and caustic waste

Most of the acids are formed on the front end of the process where you have a desalter.  You form hydrated salts which ultimately make acids when you add heat.  Caustic is added to the desalter to maintain pH.  Caustic is also used on downstream condensers as a water wash to neutralize acids and prevent condenser failure.  Some alky units use caustic to remove HF from their propane.  Caustic scrubbers can be used in various plants.   

RE: oil refining and caustic waste

(OP)
thanks it was helpful, well i need to find a away to treat caustic waste that went through an oil refinery process. turns out it has high BOD, COD, sulfide and mecaptan...i need to prevent the formation of hydrogen sulfide in the waste.

RE: oil refining and caustic waste

Sounds like Zimpro wet air oxidation might be a way to treat a stream like that.  Siemans owns the technology now.

RE: oil refining and caustic waste

(OP)
Zimpro sounds like exactly the kind of tech i needed thanks. Anyways, we're trying an alternative we're going to use microbes to immobilize the sulfur in the waste stream. hopefully this would lower the BOD and COD significantly. thanks for all the help :D  

RE: oil refining and caustic waste

This is too slick.....

Did we just witness a commercial ????

i am tellin dave on you..!!!

   

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources