Updraught or counter current gasifier
Downdraught or co-current gasifiers
Cross-draught gasifier
Fluidized bed gasifier CFC
Other types of gasifiers
Probably there is no real straight-forward answer for this 'difficult' questions. It is really depending on how diverse the feedstock can be. And the scale of the gasifer and the product you want are also some important factors...
Muhammad down draft gasifiers are suitable for wood chips the producer gas is quite reliable. This form of natural gasification differs very much from the aspirations of those seeking to force gasification by inducing the reactor by spending external energy. Problem with gasification reactors is that they choke if gas canto circulate evenly. Our PowerCan was plugged in and running automatically for more than 5 years. Problems occur when you look to upscale the gasifier our PowerCan 200 is a 200kWe we have no plans to make larger reactors
Next up for us is cocktails with defined wood chip and cellulose waste from retail and hospitals. Given that wood chip is most abundant processing of MSW through bulk handling is not necessarily worth while.
The non fixed or rotating gasifier can be used for Broiler Chicken waste the first problem of continuous gasification (not forced) is overcome but the levels of tar are very high. One must also consider wear and tear from feedstock especially chlorine
We do not think gasification on large scale is reliable and for this reason we developed a Battleship mentality where for example we have 6 200kWe working systematically with the ability to go on and off line with any given unit and constant 1MWe
With so much emphasis on gas cleaning we are using cold plasma with almost negligible energy consumption a far cry from plasma torches used to reform poor quality gas which occurs in mixed feedstock.
If we can help in any way please join our new Group on LinkedIn PowerCan 200 and we will be pleased to give you advice and share images and data on everything from feedstock to engines, we are currently in R&D to develop PowerCan 200 as a fully off the shelf product manufactured at the Polish shipyard, we are assisted by University Polytechnic Warsaw and Krakow
Steve
www.powercan200.com
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