Selasa, 27 Desember 2011

Effective Torrefaction Technology from JF BioCarbon

Basically there are two torrefaction technology in use today, namely the direct heating and indirect heating. Direct heating is torrefaction technology with direct heating by using the unit operation (process equipment), among others, with non-oxygen gas loop with exchanger using a moving bed, drum, vibrating belt, multiple heart furnace or using a low-oxygen gas loop linked to the burner using a tunnel or moving bed.  While the indirect heating included using advanced drying technology and retort heating as did JF BioCarbon.  A number of technology providers are competing to design an effective and efficient process so that meet benefit greatly. The use of indirect heating such as JF BioCarbon uses a vacuum process and operating conditions are easier to control.

Huge market potential, because the excellence of the biomass torrefaction products (torrified wood pellet and briquette), also made ​​a number of technology providers to increase their production capacity. Currently the average manufacturer produces less than 5 tons / hour torrefied wood products. Production capacity to 5 tons / hour is one of the parameters of success of this technology. Torrefied wood products is predicted to replace the wood pellets, because of its superiority, among others, as follows:

-Hydrophobic characteristically, good to be stored for a long time without experiencing degradation of its physical properties
-Moisture content below 3%
-Easy to be crushed or pulverized to coal plant process
-The properties of torrified wood are very homogeneous
-Burned without causing smoke and smell because of all volatile material had been removed during manufacture.
-Ideal for gasification and Fisher-Tropsch process for conversion to chemicals.
-Can be made ​​from many biomass, while wood pellet can be made only from narrow feedstocks.

In addition to wood pellet market is already global oversupply, also encourages the use of better fuel economy in both the torrefied wood briquettes or pellets.

Among a number of technology providers, JF BioCarbon using the process easier, simpler and faster. If the average of the production process torrefied pellets through 10 stages as follows:

a. Pre-Torrefaction
1.Prepare feedstock particle size 
2. Pre-dry feedstock
b. Torrefaction
3. Evaporate Residual Moisture
4. Heat Feedstock to 250-280 C
5. De-polimerize hemicellulose
c. Post-Torrefaction
6. Cool & re-polymerize product
7. Crush to Size
8. Condition
9. Densify (pelletizing)
10. Cool & Screen
 (Adapted from Wood Pellet Association of Canada)
So JF BioCarbon production process is shorter, ie :
1-      Prepare feedstock size
2 &3 Pre-dry feedstock & evaporate moisture.. This is all done in one process.
4 & 5- are one combined process
6-       Torrefied is cooled while being moved from reactor to char bin via a cold water cooled jacketed auger system (40 ft. long)
7.  Fine particles ready for pelletizing if necessary.
8.  Pelletizing
9. Cool and Screen

For more details please click here.

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