Dear Mr. Thaity,

I don't have US Patents since I just refer to some journal and article regarding NGL recovery process. I just know the gas feed, NGL product specification, and residue gas specification. I just simulate back the process flow diagram from the journal/article. The parameter of some equipment or stream in the simulation I just take from some journal/article too but not all parameter will be given at same journal/article. So, I just try and error until all simulation is solved. That is why I did. Since this is my study on NGL recovery, I thought that is ok. What do you think?

Sorry also I don't have exact column specification but I know the mole fraction ratio between methane and ethane and bottom of demethanizer must be less than 2%. If you don't mind, can you share the simulation? Sorry for troubling you.

Regards