[Digestion] 250kW hot water biogas boiler

[info]

Edward,

 

Propane and biogas cannot be integrated in one burner. You need a
different burner head.  You should go for a burner that can be removed
and than interchanged. We have experience with biogas burners to be used
for drying of tea and that works very well. The tea dryer is fitted both
with diesel fired burners and biogas fired burners. The digester we used
was a large 4000 m3 pvc reinforced ecobag digester with mixers and with
plenty of biogas storage. For a photo look at
http://www.thecogas.nl/download/Indonesia%20factsheet%20eng.pdf

 

Theo Bijman

 

Van: digestion-bounces at lists.bioenergylists.org
[mailto:digestion-bounces at lists.bioenergylists.org] Namens Edward Matos
Gepost om: vrijdag 7 januari 2011 8:42
Gepost naar: Archief van info
Discussie: [Digestion] 250kW hot water biogas boiler
Onderwerp: [Digestion] 250kW hot water biogas boiler

 

Dear biodigestion experts,

 

A milk processing company in our vicinity (Tanga, Tanzania) has had a
lasting interest in converting its milk pasteurising process from
running on propane to running on biogas. I am doing them a little favour
by helping them to make a feasibility study and find the right people
that will make this happen. Unfortunately I have very little experience
in biogas combustion and would like to find out if anyone here is/knows
someone who could help us on this subject.

 

I am looking for a someone that could make a cost-effective
modification/replacement to the current burner, so that it can may run
interchangeably on biogas or propane. I've included a few system
specifications below:

 

Burner make/model:                     Buderus Logano SE635

Gas regulator make:                       Dreizler

Gas:                                                       Propane @ 1.5
bar (apparently not of particularly good quality)

Heating power:                                 250kW

Usage:                                                  230-300 litres
of liquified propane gas /day

 

The burner is used to heat water from around 70 degrees C to 95 degrees
C in a boiler.

 

Does anyone know if such a replacement/modification is typically
financially viable? Of course this depends on the rest of the system but
I would be interested of hearing/reading about similar switch-overs in
this ballpark that have been carried out before with financial success
in the context of their own systems.

 

Many thanks for any help that could be offered.

 

Best regards,

 

Edward

 

_______________________________________
Edward Matos

MEng (Hons.), AMIMechE, Hon.MSEE


Mobile: +255(0) 686 128 037

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