5 replies to this topic

[smuk]

What is a typical composition of FCC wet gas compressor feed gas.

 

Thanks

 

smuk

[Technical Bard]

The depends on a number of things.  Catalyst, severity, feedstock, etc.  Is it making gasoline or trying to maximize light olefin (C3=, C4=) production?  Is the feed hydrotreated or not?  What is the H/C ratio of the feed? Gravity?  There is a significant range possible.

[PingPong]

And moreover the wet gas composition is affected by the temperature and pressure in the fractionator reflux drum.

[smuk]

I am looking for a typical wet gas composition for a gasoline maximising operation.

 

Thanks

 

smuk

[Bobby Strain]

And what are you using the composition for?

 

Bobby

[rdcrags]

I agree with other comments. Here is an example analysis:

 

Gas

   

  H2S

 mol %

4.79

  N2

 mol %

9.25

  O2

 mol %

0

  CO

 mol %

2.48

  CO2

 mol %

3.46

  H2

 mol %

26.43

  C1

 mol %

23.71

  C2

 mol %

10.1

  =C2

 mol %

14.67

  C3

 mol %

0.66

  =C3

 mol %

3.07

  iC4

 mol %

0.61

  nC4

 mol %

0.18

  =n1C4

 mol %

0

  =iC4

 mol %

0.16

  =t2-C4

 mol %

0

  =c2-C4

 mol %

0