Academy Offer

Extended to August 15

Claim a 20% discount on all eLearning and virtual courses purchases with code EDU20OFF.

This promotion does not apply to the credential programs.

Fire Relief Sizing for Heavy Petroleum with Cracking

  • Checkout

    Checkout

    Do you already own this?

    Pricing


    Individuals

    AIChE Member Credits 0.5
    AIChE Members $19.00
    AIChE Graduate Student Members Free
    Safety and Health Division Members Free
    AIChE Undergraduate Student Members Free
    Non-Members $29.00
  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    April 21, 2021
  • Duration:
    20 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

Share This Post:

font-family:" arial>Fire Relief Sizing for Heavy Petroleum with Cracking

 

Fire
relief sizing on equipment processing heavy petroleum resids (e.g. refinery atmospheric
columns, vacuum columns and other equipment) has historically been
problematic.  If a fire occurs on the columns, the column may experience
temperatures exceeding the design temperature with large relief rates.  API
Standard 521 “Pressure Relieving and Depressuring” has been changeable, by
adding and then removing guidance.   font-family:" arial>In actuality the resid may experience mild
thermal cracking into lighter components thus lowering the vaporization
temperature. Further, the heat utilized to crack the resid will not be used for
vaporization and thus reduces the fire relief rate.  Determination of the heat
of the cracking reaction is key but has been historically difficult due to the
large amount of computations.  However, a proven model utilizing recent simulators
can handle the computations.  " arial>This paper will provide guidance on pressure relief sizing.
It will outline a method to characterize the resid and products and use them to
determine the heat of cracking at different temperatures. The relief sizing
will be illustrated for several cases.  The method is practical yet
theoretically rigorous,  utilizes publicly available information, and is sufficiently
accurate for pressure relief determination.    

 

 

 

 

 


 

 

 

 

 

 

 

Presenter(s): 
Once the content has been viewed and you have attested to it, you will be able to download and print a certificate for PDH credits. If you have already viewed this content, please click here to login.

Checkout

Checkout

Do you already own this?

Pricing


Individuals

AIChE Member Credits 0.5
AIChE Members $19.00
AIChE Graduate Student Members Free
Safety and Health Division Members Free
AIChE Undergraduate Student Members Free
Non-Members $29.00
Language: