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AssigneesTeknologian tutkimuskeskus VTT Oy, Metso Power Oy
InventorsSAMPO RATINEN, JANI LEHTO, MIKKO ANTTILA, TUOMO HILLI, KRISTIN ONARHEIM, ISMO HIRVONEN, YRJO SOLANTAUSTA, MARKKU RAIKO
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The invention relates to a method for producing a pyrolysis liquid, wherein the pyrolysis liquid is formed by means of pyrolysis from a raw material by forming, in a pyrolysis reactor, a gaseous pyrolysis product by pyrolysis and condensing it in a condenser into a pyrolysis liquid, and feeding circulation gas into the pyrolysis reactor. According to the invention, the circulation gas is conducted by means of a liquid ring compressor into the pyrolysis reactor and purified before being conducted into the pyrolysis reactor, and the pyrolysis liquid is used as the liquid layer in the liquid ring compressor. Further, the invention relates to a corresponding apparatus.
1-9. (canceled)
A method for producing a pyrolysis liquid, wherein the pyrolysis liquid is formed by pyrolysis from a raw material by forming a gaseous pyrolysis product by pyrolysis in a pyrolysis reactor and condensing it into a pyrolysis liquid in a condenser, and feeding circulation gas into the pyrolysis reactor, characterized in that the circulation gas is conducted by means of a liquid ring compressor into the pyrolysis reactor and purified before being conducted into the pyrolysis reactor, and the pyrolysis liquid is used as the liquid layer in the liquid ring compressor.
An apparatus for producing a pyrolysis liquid, the apparatus including at least a pyrolysis reactor, wherein a gaseous pyrolysis product is formed by pyrolysis from a raw material, raw material feeding means for feeding the raw material into the pyrolysis reactor and a condenser, wherein the gaseous pyrolysis product is condensed into a pyrolysis liquid, and gas feeding means for feeding circulation gas into the pyrolysis reactor and circulation gas circulating means for circulating the circulation gas from the condenser into the pyrolysis reactor, characterized in that the apparatus includes a liquid ring compressor for conducting the circulation gas into the pyrolysis reactor from the condenser and purifying the circulation gas, and the apparatus includes compressor liquid circulating means for conducting the pyrolysis liquid used as the liquid layer of the liquid ring compressor to the liquid ring compressor from the condenser and back to the condenser from the liquid ring compressor.
Dependencies are inferred from the claim text.