5 replies to this topic

Dear all,
I am currently doing a project on flue gas particulate removal system using hysys. I would like know how to start the simulation. I have the following data:
Gas flow rate:12 kmol/s
solid density: 800 kg/m3
solid size and mass distribution
solid removal efficiency: 98%
gas solid loading: 100g/m3
regarding the design of the cyclone, do I need to know the composition of the solid in order to simulate in hysys. If yes, is there any reference for it? If no, how do I go about it? Is there any reference on cyclone design for flue gas?
Thank you very much.

[Zauberberg]

References for cyclone design and operation can be found in most of engineering textbooks, such are Perry, GPSA, Ludwig etc.

There is a dedicated unit operation for modeling cyclone in HYSYS, developed through extension unit ops. I haven't used it, but I remember seing it available in my previous company.

References for cyclone design and operation can be found in most of engineering textbooks, such are Perry, GPSA, Ludwig etc.

There is a dedicated unit operation for modeling cyclone in HYSYS, developed through extension unit ops. I haven't used it, but I remember seing it available in my previous company.

thx, Zauberberg.
Do you have any idea about what is the solid content of flue gas? If I am not wrong, in hysys simulation of the cyclone, I need to define the component first.

[ankur2061]

References for cyclone design and operation can be found in most of engineering textbooks, such are Perry, GPSA, Ludwig etc.

There is a dedicated unit operation for modeling cyclone in HYSYS, developed through extension unit ops. I haven't used it, but I remember seing it available in my previous company.

thx, Zauberberg.
Do you have any idea about what is the solid content of flue gas? If I am not wrong, in hysys simulation of the cyclone, I need to define the component first.

hojam,

There is a reference to a free spreadsheet for cyclone on the web. May give you some idea on cyclone design. Here is the link:

http://dwb.unl.edu/T...ly/aa011298.htm

Regards,
Ankur.

References for cyclone design and operation can be found in most of engineering textbooks, such are Perry, GPSA, Ludwig etc.

There is a dedicated unit operation for modeling cyclone in HYSYS, developed through extension unit ops. I haven't used it, but I remember seing it available in my previous company.

thx, Zauberberg.
Do you have any idea about what is the solid content of flue gas? If I am not wrong, in hysys simulation of the cyclone, I need to define the component first.

hojam,

There is a reference to a free spreadsheet for cyclone on the web. May give you some idea on cyclone design. Here is the link:

http://dwb.unl.edu/T...ly/aa011298.htm

Regards,
Ankur.

thank you, Ankur. But It seems that the file has been removed from the server.

[Andrei]

hojam,

As I know, in order to simulate a cyclone you need a solid-liquid-gas thermodynamic system. The only system I know to support solids in Hysys is OLI electrolytes. There may be others in the last version (v. 7.0) I heard that all Aspen Plus thermodynamics are fully supported in Hysys, but didn't have the opportunity to see it.
As a consequence you will be able to simulate only the components supported by the specific thermodynamic system.
Simulating cyclones in Hysys I think is fairly simple once you established the thermodynamics, but I wouldn't trust the results at all.
A thermodynamic system can be fairly good in predicting phase transformations and interactions, but in a cyclone's case electrostatic and collision forces are very important in the process, and I do not know how good is Hysys in predicting those.
Personally I have some doubts about how effective will be a cyclone in removing the particulate matter from flue gas. Solid removal efficiency of 98%? I think that is beyond a gas-solid cyclone capabilities when you take into account the kind of particles you want to separate, and this is coming from some extended operating experience with these devices.

Good luck