3 replies to this topic

[Root]

Hi All,
We are facing a gas burner plugging problem frequently, H₂ is 40% in fuel gas and molecular weight is 12-16 normally.
The burner is John zink company , model is PFSG. during cleaning of these burners we found some sort of sticky material. some time flame back flash and lifting problem is also observed this may be due to more H₂ in fuel gas.
As per some available information regarding refinery fuel gas, burner plugging and lifting is due to more H₂ % in fuel gas.
Can any one explain it in detail?
Thanks
Toor

[Art Montemayor]

Toor:

You have a serious problem that I would not tolerate. In my opinion, this problem is one that must be resolved as soon as is possible.

The good side (if there is one) to this problem is that the burner you are employing is designed and built by an experienced, top-of-the-industry manufacturer who can be of considerable assistance in guiding you through to a solution. You should confirm my following recommendations with John Zink, or one of its technical representatives:

A gas burner – especially a well-designed one, like a John Zink – should never undergo plugging. A gas burner, once lit, should continue to burn successfully until it runs out of CLEAN gas fuel or is shutdown by the operator. I have run John Zink burners continuously for months and months. However, note that I emphasize the word CLEAN. If there are any solid or liquid (non-gaseous) contaminants in your fuel, it is your obligation to clearly and specifically note this in your datasheet when you purchase the burner. If the contamination has appeared after the burner was purchased and installed, then it is your obligation to remove the contaminants from the gas prior to burning.

Hydrogen should not present any problems in a well-designed and sized gas burner – such as a John Zink. This is one of Zink’s unique specialties: the successful burning of light gases, such as hydrogen. Be sure to consult with John Zink over this problem, carefully explaining what is happening and what you have found. Give Zink ALL the basic data: a detailed fuel analysis, fuel pressures, temperatures, and flow rates. Also describe carefully what you call “flame back flash and lifting problem”.

I am absolutely certain that if you notify John Zink, they will apply their best solution to the problem. Zink has a department for customer service and this is a serious problem that could hurt their reputation in the industry. I am sure that they will do their best to resolve this problem through consultation or through direct assistance. Just make sure that they (John Zink) are aware of what is happening with their burner. The problem may be resolved by simply filtering out the fuel contaminants; but it requires careful attention and study before arriving at a solution.

I hope this experience helps you out.

[breizh]

Good day Toor ,
You probably know this website but in case :
http://www.johnzink....rocess-burners/

They have at the end of the document a specification sheet , it may be interesting for you to review it.

Breizh

[Root]

Dear Art,
Thanks for your valuable comments. I checked burner data sheet and per data sheet this burner desinged for 50% H₂ and 40% C1.
I attached Fuel gas analysis for your further comments and suggestion for cleaning and filltering of fuel gas to avoid this problem.
3% olefins also present in refinery fuel gas.
Thanks
Toor

Attached Files

•  Sweet FG Analysis.xlsx   16.13KB   16 downloads