4 replies to this topic

[jamie94]

Hi guys,

 

Basically i am helping in a company proposal on fuel gas conditioning skid for the client.

 

The gas has to be filtered to remove solid particles and water before it is fed into the superheater and then to gas turbine.

 

We are not used to design the filter before (normally give it to the manufacturer to do the job). And the supervisor thought it is a good idea to work out how the filter's internals work so he can purchase the parts separately to cut cost.

 

I have gone through GPSA chapter 7 and it stated that the most commonly used pressure filter in this context is cartridge filter.

 

Is my information correct? and is there any material that I can refer to for more information?

 

Thanks heap.

 

Regards

Jamie

[jamie94]

I know that it is normally supplied as a complete package by manufacturer. And there are also some guidelines given in PTS and DEP for verification.

 

But is there any documents available for the design?

 

Thanks

[ankur2061]

Jamie,

 

The filter is indeed a cartridge type design and serves as both a filter to remove fine solids and a coalescer to coalesce fine liquid mist in the fuel gas to remove trace moisture downstream of the KO drum on the fuel gas conditioning skid.

 

There are specialized vendor's who provide filter-coalescer package for fuel gas conditioning with laboratory and pilot test facilities to check performance of their equipment based on client's data. Use a google search to find those vendors. DEP has guidelines related to performance of the filter-coalescer. I am sure that those performance guidelines along with the fuel gas inlet conditions and composition are sufficient to provide a datasheet to the vendor for him to give you a quote for a suitable filter-coalescer. And I am also sure, you are not serious about sizing yourself a cartridge type filter-coalescer.

 

Regards,

Ankur.

[Bayo Alabi]

 

Jamie,

 

Normally the fuels gas filters are located downstream of the superheater and not upstream of the superheater as your post suggests.

 

The fuel gas filters are provided to remove liquid and solid particles from the fuel gas immediately prior to supply to the turbogenerators. Normally cartridge filters are used. Sometimes the filters are provided by turbogenerator vendor. 

 

Bayo

[jamie94]

Thanks guys!