Density of blended residual fuel oil 3

Yes.
The refutas will give you the blend ratio.
You know the density of each component and it is a simple calculation to determine the density of the blend because density is an additive property.
If you prefer, download a copy of the Shell program for fuel oil blend calculations, obtain a similar program from Esso, DNV or visit the steamesteem.com web siote for a free download there.
The Shell program is at:
(the lnk is in the *.pdf file).

JMW

As a subject of wider application see also:

thread483-200527.

Hello everybody:

Thanks to jmw and 25362.

jmw, I already have that document from Shell but, anyway, thanks you.

The question is for this:

Residual fuel oil with density = 1014 kg/m[sup]3[/sup] at 15º C and a kinematic viscosity of 1000 cSt at 50º C.

Diluent with density = 850 kg/m[sup]3[/sup] at 15º C and a kinematic viscosity of 3.4 cSt at 50º C.

In order to obtain a viscosity of 600 cSt for the blended product, it is needed to mix 95,1 % mass of residual fuel oil and 4,9 % mass of diluent. So far, everything looks O.K.

But, for the density is it correct to do this?

(4,9%)(850)+(95,1%)(1014)= 1.005,96 kg/m[sup]3[/sup]

Thanks

If there is no contraction nor expansion (meaning volumes are additive) as a result of mixing, and to be consistent with the units:

Hello everybody:

Thanks for all. Stars for you.

Just curious but is the cutter viscosity 3.4cst at 50degC or is it at 40degC? as it is more usual to quote the 40degC value for the cutter.
If 3.4cst at 40degC then a 600cst blend would require 4.6% by mass cutter and the resultant density is 1004.5kg/m3 but if it is 3.4cst at 50degC ( a thicker oil) then the blend requires 4.9% cutter and the blend density is 1005.2kg/m3.

(I prefer to use the DNV program Bunker Master 2 or the Esso program, because the Shell program requires you to calculate each property in turn once you know the ratio from the viscosity calculation.... I'm lazy. I used the DNV here.).

JMW

Hello everybody:

jmw: the cutter is 4,1 cSt @ 40º C.