Method of carrying out pyrolysis and pyrolysis apparatus

摘要

The invention relates to a method of carrying out pyrolysis process in a pyrolysis reactor for solid fuel to produce pyrolysis oil. The method comprises supplying solid fuel into a drying zone in the pyrolysis reactor for removing moisture containing gases, drying the solid fuel in the drying zone and extracting the moisture containing gases removed from the solid fuel out of the pyrolysis reactor, passing the dried solid fuel from the drying zone to the pyrolysis zone of the pyrolysis reactor, pyrolyzing the dried solid fuel for separating pyrolysis gases from the dried solid fuel and conducting the pyrolysis gases from the pyrolysis reactor to a condenser for producing pyrolysis oil.

主权项

1. A method of carrying out pyrolysis process in a pyrolysis apparatus for solid fuel to produce pyrolysis oil, whereby the pyrolysis process is carried out in connection with a fluidized bed boiler, and supplying heat required for the pyrolysis process at least partly by bed material of the fluidized bed boiler, the method comprising steps of:
supplying solid fuel into a drying zone in the pyrolysis reactor; drying the solid fuel in the drying zone and removing moisture containing gases from the solid fuel from the drying zone; passing the dried solid fuel and the bed material essentially horizontally from the drying zone to the pyrolysis zone arranged sequentially in horizontal direction in the pyrolysis reactor; pyrolysing the dried solid fuel for separating pyrolysis gases from the dried solid fuel and removing the pyrolysis gases from the pyrolysis zone; whereby the moisture containing gases separated from the solid fuel in the drying zone and the pyrolysis gases separated in the pyrolysis zone are removed separately; and passing the pyrolysis gases from the pyrolysis reactor to a condenser for producing pyrolysis oil.