[Gasification] Swirling Diffusion Flame Tar Burner

[Jeff Davis]

Dear Toby, Peter, & All,

Wish I had the time to read all this stuff!

PDF links below text.

Here is yet one more way to rid the tar:

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Gasification is the conversion of solids into gaseous fuels. Tar
production is one of the major problems for the introduction of gasifiers
for biomass. Before the gas can be introduced into the gas engine, the tar
content has to be reduced to low values. The successful implementation of
(small-scale)
gasification technology for gas engine or turbine-based power projects
depends on the effective and efficient removal or conversion of the tar
components in the producer gas. Possible ways to diminish the tar content
in the producer gas, is by partial oxidation or thermal cracking.

In figure 1, a swirling diffusion flame burner is shown. This burner is
designed to remove the tars in the gas by combining the two methods
mentioned above: i.e. combining partial oxidation and thermal cracking.
Recent research shows that thermal treatment alone results in
polymerization of the tars [Houben et al 2002].

Partial combustion is performed by burning a small part of the gas, using
very little air. This burning is used to combust the tar components in the
gas, and should also heat the whole gas stream homogeneously; which is in
turn needed for the thermal cracking. Especially for this thermal
cracking, it is important for the gasses to mix well after the burner in
order to create a homogeneous temperature and a longer residence time at
this temperature.

http://psfvip4.univ-fcomte.fr/Fpsfvip4/sources/F4071.pdf

http://alexandria.tue.nl/extra2/200410709.pdf




Jeff




-- 
Jeff Davis

Some where 20 miles south of Lake Erie, USA