Going green with alternative energy is an important component to a cleaner environment. Biomass gasification and wood gasification is one of the powerful technologies that can help produce green energy. Wood gas or Syngas are biproducts of turning solid biomass into a gaseous form but that process also produces particulates and tars. Here is a proven method of removing a large part of those elements.
In larger industrial gas cleaning systems, a scrubber is proven way of removing 90-99% of particulates and 30-60% of tars.
” A venturi scrubber consists of three sections: a converging section, a throat section, and a diverging section. The inlet gas stream enters the converging section and, as the area decreases, gas velocity increases (in accordance with the Bernoulli equation). Liquid is introduced either at the throat or at the entrance to the converging section.
The inlet gas, forced to move at extremely high velocities in the small throat section, shears the liquid from its walls, producing an enormous number of very tiny droplets.
Particle and gas removal occur in the throat section as the inlet gas stream mixes with the fog of tiny liquid droplets. The inlet stream then exits through the diverging section, where it is forced to slow down.
Venturis can be used to collect both particulate and gaseous pollutants, but they are more effective in removing particles than gaseous pollutants.
Venturis are the most commonly used scrubber for particle collection and are capable of achieving the highest particle collection efficiency of any wet scrubbing system. As the inlet stream enters the throat, its velocity increases greatly, atomizing and turbulently mixing with any liquid present.
Particle removal efficiency increases with increasing pressure drop because of increased turbulence due to high gas velocity in the throat. Venturis can be operated with pressure drops ranging from 12 to 250 cm (5 to 100 in) of water.”
As with any wet scrubbing system, you will need some way to deal with the dirty water left over. If it only contains particulates, then it’s not too bad. If it contains tars, then you may have your work cut out for you.
Alternative energy found in gasification is an important piece of the going green puzzle. If you are looking to get off the grid, in an isolated area or are in an industry that has a lot of biomass waste then gasification is definitely a relevant and viable means of turning your current trash into energy. Plans and other resources are available on Venturi scrubbers and more to help backyard gasifiers understand and utilize this technology.
Ben Peterson is the founder of VictoryGasWorks.com and has developed as the definitive answer source for anyone interested in gasification. Not just theory or gasification learned in a classroom, Ben is an active hands-on inventor that has built every model out there and has now invented his own line of gasifiers and gasifier kits scaled down to an affordable, attractive and convenient level for consumers. His gasifiers can power cars by fitting into car trunks, help power homes or heat them.