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TORREFACTION AND PARTIAL PYROLYSIS TO PRODUCE FUEL PELLETS WITH COUNTER CURRENT FLOW OF TAR
TORREFACTION AND PARTIAL PYROLYSIS TO PRODUCE FUEL PELLETS WITH COUNTER CURRENT FLOW OF TAR
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机译:通过焦油的逆流流动进行扭转和部分热解以生产燃料颗粒
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摘要
The present application discloses a continuous process for the preparation of fuel pellets, said process comprising the steps of a) feeding a feedstock to a torrefaction and partial pyrolysis step at a temperature in the range from 250° C. to 500° C., whereby a solid char and volatile fraction are obtained, said volatile fraction comprising a tar fraction; b) directing the evolved volatile fraction as counter current stream relative to the stream of the feedstock, and at least partially condensing the volatile fraction on the incoming feedstock so as to obtain a tar-rich fraction combined with the incoming feedstock; and c) pelletization of the combined solid char/tar-rich fraction so as to obtain said fuel pellets. Novel fuel pellets are also disclosed.
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