Gasification

What is gasification?

 

Gasification converts organic and fossil-fuel based materials such as plastic and rubber into syngas (hydrogen and carbon monoxide), biochar, and carbon black at high temperatures under low oxygen conditions.

There are a number of different gasification technologies on the market. Some are very expensive and many do not deliver as promised.

What do we use?

 

Waste to Work use down-draft gasifiers and ancillaries designed and manufactured by ID Gasifiers Pty Ltd. ID Gasifiers have developed cutting edge gasification technology with an elegant and simple design that ensures superior and consistent performance.

The Process

Drying. Moisture is driven from the feedstock at ~100°C. This moisture is drawn into the super-heated gasification zone and is cracked into hydrogen and oxygen. The dried feedstock moves closer to the heat in the reactor.

 

Torrefaction. The feedstock is heated further and light volatile compounds are distilled from this at 160 - 300°C. These compounds ignite or are cracked to simpler compounds. Charcoal begins forming.

 

Gasification. The temperature in the gasification zone increases to 900 - 1200°C due to the ignition of the volatile compounds. Charcoal formed during the preceding processes becomes incandescent accelerating chemical reactions to form carbon monoxide and biochar . Out gassing and thermal decomposition of all compounds occurs. 

Resource capture. The syngas is collected  for cleaning and cooling in situ, and is then piped to a generator to fuel electricity production, or is collected for further industrial processing. Biochar is collected from the bottom of the grate, cooled in situ, and removed. Carbon black is collected from the cyclone and filter system. Tars and remaining volatile organic compounds are fed back into the gasifier for further cracking.