Bacharach Index (effects on HRSG design for oil firing) 1

[Bahador_eshghi]

Hello
I am responsible for HRSG basic design (Heating surface and so on), now we are facing some regulations from our licencor to consider some limitations when using fuel oil in gas turbine.
the licencor defined the limitation based on the BACHARACH INDEX of the exhaust gas of the GT,
does anybody have information about this index? and how to measure it?

 

[MJCronin]

Bacharach is a small company that sells simple combustion (soot) analysis devices (TRUE Spot smoke detector)suitable for small oil/kerosene burning boilers.

https://www.mybacharach.com/product-view/true-spot-smoke-tester-2/

These analysis readings are merely comparative and, as far as I can tell, not related to any ASTM or other world recognized standards.

IMHO, there are much more sophisticated devices available on the market for HRSG flue gas testing. The Bacharach device is a simple device that should be carried by a repairman.

What kind of combustion guarantees did you offer to your client ?

Monitoring flue gas oxygen content is typically very important ....

https://www.sstsensing.com/product/...aFj_XxoKaiRMpWBKjUSoHTMP5FgpiAswaApb9EALw_wcB

MJCronin
Sr. Process Engineer

 

[Bahador_eshghi]

Dear MJCronin
thanks so much for replying my question, as you mentioned Bacharach is the name of a company which is manufacturer of this kind of devices and its available in the market, as i searched through the net i found related standard, ASTM 2156 that clearly talk about this kind of manual devices with another name! "Smoke Density",even more there is a laboratory type of this device that has been mentioned in the standard.
As you may know when the gas turbine is using fuel oil instead of natural gas the amount of soot at the end part of the HRSG ( heat recovery steam generators) becomes a concern, because clogging of the heating surfaces shall be avoided!
so according to our design rules we have to know the amount of soot at gas turbine in fuel oil firing, by knowing the "Smoke Density" or "Bacharach index" parameter.
know we are looking for some devices (except the manual one you mentioned )to measure this parameter online.

regards
Bahador

 

[georgeverghese]

Dont know if this helps, but we used to spec out requirements for flare tip performance by quoting the required Ringlemann smoke index for the product combusted gas. There are online instruments for measuring the opacity of stack flue gas streams - check this out on Google search. The Ringlemann index is used in the oil/ gas industry.