2 replies to this topic

[walidd_23]

Dear All,

 

 

in our gas compression and reinjection facility, unexpected changing of Inlet gas composition has occurred ( the gas became leaner (M=22<< M design=27). wich routed to an effective influence of outlet pressure and compression system.

 

I am asked to model the Dynamic compression system , and study the behaviour of the compressor ( anti-surge..) with the new parameter and different scenario ( shutdown , decreasing of flow rate...ect)

 

My questions are:

 

1/ Can we use the same curve system of the compressor for the new gas composition.?if not how can we estimate new curves?

 

2/ how can we resize the surge valve?

 

 

Regards,

Walid,

[Bobby Strain]

Polytropic head is a characteristic of the machine, not the gas. And you should engage the services of one who is skilled in the art of compressor modelling.

 

Bobby

[walidd_23]

Thanks Bobby

 

What confused me that I found in compressor datasheet tow system  curve  of tow diffrent moleculair weight M=25 and, M=27 .

 

can you give me the procedure to size a surge valve ? 

 

Regards,