jmw
Interesting to note that you have keen interest in process viscosities, would like to learn more. I am one of the contributers to cheresources for refutas method. I have checked various methods and tried to develop my own equations based on viscosity curves. you can send me your mail at...
There are some direct correlations being used for viscosity blending one of them is Refutas method. It is easy to use and I have the spreadsheet for this. In case you need it please send me your emain ID.
No and it is unlikely for asphaltenes to go all the way up in kero. Try in case you have not done this - ensure if your charcoal bed is not the source of this ( poor quality of charcoal, improper filteration etc).