7 replies to this topic

[reihane1]

Dear All,

I am trying to size an orifice plate to make pressure drop and turbulency for mixing of demulsifier with produced water.

the necessary pressure drop is 0,5bar and the pipe size is 4'' GRP.Since we have different flow rate for SOP to EOP

I can not decide which size is suitable for orifice. at the beginning the flow rate is 1,52m3/hr but at the end it will be 17,215 m3/hr and the orifice size for making 0,5bar pressure drop is from 10 to 30mm. We can not use 32mm for SOP because the pressure drop will be negligable and we can not use 10 for EOP since the pressure drop will be too much.

Also another question is type and standard size of the orifice.is eccentric orifice is suitable in this case?

please advice me

Regards

Rayhaneh

[marchem]

perhaps you may consider a static mixer,

could it be suitable for your application ?

[reihane1]

perhaps you may consider a static mixer,

could it be suitable for your application ?

Dear marchem

Yes it is possible but in our  engineering documents orifice has been shown and now we are at final stage of fabrication and forget to procure this orifice.

It is to late for us to change the design and since the procurement of orifice is easier and it is cheaper we shall not change the design. could you propose any solution?

[fallah]

reihane1,

 

Appears you cannot rely on a fixed orifice to produce adequate turbulency in such wide range of passing flow.

[reihane1]

reihane1,

 

Appears you cannot rely on a fixed orifice to produce adequate turbulency in such wide range of passing flow.

Dear Fallah

What do u propose? using of static mixer?

[fallah]

Dear reihane1,

 

Static mixer would be better option, provided that you resolve your problems due to limitations on procurement and design change...

[reihane1]

Dear reihane1,

 

Static mixer would be better option, provided that you resolve your problems due to limitations on procurement and design change...

Thank you for reply. what do u think about injection quill? does it helps as well?

[fallah]

Dear reihane1,

 

Injection quill can also be an option, provided that there would be adequate bulk fluid energy due to turbulency for proper dispersion...