8 replies to this topic

[binzee]

Dear All,

Is there any utility in Hysys to find out the boiling point of a mixture or a single component?
Moreover, can we see the behaviour of boiling point of a single component or mixture with changing pressure (in the form of graph or something).

Thankyou

regards,

[Propacket]

There is a utility in Hysys namely "Boiling Point Curves". I guess that is what you are looking for.

[binzee]

There is a utility in Hysys namely "Boiling Point Curves". I guess that is what you are looking for.

That doesnt help much, especially for single component

[Zauberberg]

Single component properties you can find in ChE textbooks, or on the internet. For example: http://webbook.nist.gov/chemistry/

You can even find this data in Hysys' Basic Environment, by clicking on the selected component.

As for the mixture, you can use the data from Utility Tab, or you can create a simple flowsheet and evaluate IBP, 10%, 20% etc. volume flashed at different conditions by specifying stream conditions in Hysys.

[Propacket]

There is another utility in Hysys namely "Envelope Utility". This utility will give you different types of envelope like PV diagram, PT diagram, TS diagram, PH diagram. The envelope is avialable in table form as well as in the form of a plot. As required, you can easily see the effect of pressure on boiling point on a PT diagram in the form of a plot or a table.

Thanks

[Chellani]

For pure components, double click any stream, go to composition page and select edit properties button which would show properties of all components in which boiling temperature of all components would be available

Apart from the tools mentioned above, you can try case study as well.
- Define a stream using P-VF (pressure-vapor fraction) flash. Use VF=0 if you are looking for bubble point termperatures and use VF=1 if you are looking for dew point
- Add pressure and temperature of this stream in a case study (Ctrl+D)
- Use pressure as independent variable and define specific range and interval

All the best.

Edited by Chellani, 02 September 2010 - 03:34 AM.

[Padmakar Katre]

Dear All,

Is there any utility in Hysys to find out the boiling point of a mixture or a single component?
Moreover, can we see the behaviour of boiling point of a single component or mixture with changing pressure (in the form of graph or something).

Thankyou

regards,

Dear,
I will answer your query one by one,
1. In case pure components boiling point (NBP i.e. @ 1 ATM. pressure), go simulation basis manager and in fluid package tab double click on selected fluid package and click on edit properties tab which will give all the properties of the single component (library as well as the pseudo component).
2. If you are in the simulation main environment and want to find out the boiling point elevation and suppression with respect to pressure for a single component, follow method suggested by other Che members i.e. define a stream and give composition(mole fraction) of single component as 1 and rest will be zero and then the VF as 0 and the Pressure which will give the bubble point at that pressure the same to be followed for a mixture.
3. When you need to find out the avg boiling point of a petroleum cut, follow API method-2B1.1 to calculate the different avg boiling points i.e. VABP(Volumetric Avg BP),MABP(Molal Avg BP),WABP(Weight Avg BP),CuABP(Cubic Avg BP), MeABP(Mean Avg BP).

Over and above if you need further help please let us know.

P.S. - Very soon I will upload an excel spreadsheet here for calculation procedures in API technical data book.

[binzee]

Dear All,

Thank you very much for your help

PS. PADMAKAR KEEPING FINGERS CROSSED FOR YOUR WORKSHEET

[sundutt]

yes you can define stream and put necessary inputs you can get through hysis and use case study option to evaluate ts relation with pressure

Dear All,

Is there any utility in Hysys to find out the boiling point of a mixture or a single component?
Moreover, can we see the behaviour of boiling point of a single component or mixture with changing pressure (in the form of graph or something).

Thankyou

regards,