Natural Gas with liquids ßnd solids 2

[ahung]

Recently we have a lots of problems with the Gas turbines operation because the natural gas come with liquids and solids like a black fine dust. For liquids we have a gas separator on each Combustion Turbine (W501D5) and we can solve this particular situation, but with this black fine dust our main filter collapse and the dust come into the fuel nozzles. The black fine dust clogged the fuel nozzles and the combustor chamber temperature spread increase over 60-90 F grades and the machine autounload when reach over 90 F grades. We need to remove the pipes, clean the fuel nozzles, change the filter waiste a lot of time using human resources and lose money because the machine must be shutdown for do all mentioned activities.

We ask to PDVSA GAS (our natural gas provider) about this problem, but they don´t have a technical explanation about the causes of this situation.


Regards

Alberto J. Hung C
Caracas Venezuela

 

[pmover]

start the detective work . . .
collect samples at plant inlet and other strategic locations, including a sample removed from filters, and determine composition of black dust. then the source of the contamination can be determined. are you certain that the contamination is from pdvsa pipeline? if source of contamination is from pdvsa, then they should be actively involved in resolving the matter.

good luck!
-pmover

 

[rmw]

Here is a paper that will give you a lot of background on the topic even if it is written by the major competitor of your turbine mfg'r.

http://www.gepower.com/prod_serv/products/tech_docs/en/downloads/ger3942.pdf

The basic site has lots of papers that, while they are specific to GE equipment, they are generic to any and all such equipment. Here is the link to the entire list.

http://www.gepower.com/prod_serv/products/tech_docs/en/all_gers.htm

PVDSA may not be aware of what types of contaminates that they have in their pipelines.

Hope this helps.

rmw