×
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

H2S Scavenger Thermal Stability

H2S Scavenger Thermal Stability

H2S Scavenger Thermal Stability

(OP)
Can anyone direct me to literature regarding thermal stability of the reaction products of Hydrogen Sulfide Scavengers?  The manufacturer of the scavenger we are using did not know if the reaction products were stable above their boiling point.   

RE: H2S Scavenger Thermal Stability

All I can tell you from experience is that our lean oil plant inlet gas has less than 4 ppm H2S coming in and the NGL products, ROD overhead and residue gas has over 4PPM.  The temperature in the towers are 330 to 450 F, so the reaction must be going backwards in there.

I'll be very interested in this thread.

RE: H2S Scavenger Thermal Stability

There is a large variety of H2S scavengers. Depending on the application is the scavenger. Some might even be considered non-reversible reactions, i.e. hotlime (CaO) in drilling fluids.
Something you might want to look into is the basic chemistry of the reaction, whether it is exo or endo thermal and start there by determining the possibility of reversion due to temperature. As well, you might want to see what is boiling and how these gases might affect the products of the scavenger reaction.
What is your scavenger? What will be the product? How is the reaction taking place? Ask this and you might have an answer

RE: H2S Scavenger Thermal Stability

There was a publication in the November 2005 Hydrocarbon Engineering on Reactive Sulfur Management.

The publication mentioned that:
An effective way for scavenging H2S and mercaptans from crude oil is to use a chemical conversion reagent. This type of additive will react with either the H2S or mercaptans to form irreversibly diakylsulfides and these reaction products will not revert back to H2S or mercaptans if exposed to higher temperatures. This however dependant on scavenger used.

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