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Steam Drum-Bfw Nozzle Direction- Fouling Issue At Turbine

steamdrum

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#1 canhhienfamily

canhhienfamily

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Posted 11 September 2019 - 10:11 PM

We are facing with the fouling issue of steam tubine using HHP steam from CO boiler.

The existing design of BFW nozzle is upward and nearby the distribution nozzle of chemical. We think that chemical may carry over with steam and cause fouling for the turbine.

I have heard that some steam drums designed with nozzles downward and the mentioned issue has not occured.

SOme ideas suggested to make a cover the upward nozzles to prevent chemical carry over.

Please help to clarify/share some concerns/information as follows:

1. Any standard required for direction of BFW nozzles (upward/downward)?

2. Any case study of cover for upward nozzles has been applied somewhere?

3. Any other solution to mitigate the fouling issue?

Thank you and best regards



#2 Pilesar

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Posted 12 September 2019 - 05:52 AM

I will offer my answers to your questions:

1. Any standard required for direction of BFW nozzles (upward/downward)?

There is no standard for direction of BFW nozzles.

2. Any case study of cover for upward nozzles has been applied somewhere?

No one has published a case study of applications of covers for upward nozzles.

3. Any other solution to mitigate the fouling issue?

Adjust water chemistry. 



#3 canhhienfamily

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Posted 10 March 2020 - 04:09 AM

Thanks Mr Pilesar



#4 breizh

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Posted 10 March 2020 - 05:42 AM

Hi ,

Did you ask the vendor of chemical treatment for assistance ? he should provide you technical support.

 

Consider the resource attached 

https://www.suezwate...water-treatment

 

you may find additional resource visiting Spirax Sarco website.

 

Good luck .

Breizh 


Edited by breizh, 11 March 2020 - 02:38 AM.


#5 canhhienfamily

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Posted 16 March 2020 - 02:29 AM

Dear Mr Breizh

Thanks for your advice.

Chemical supplier recomended to modify the nozzle to downward direction or make a cover for BFW line.

Rgs






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