Catalytic pyrolysis process and pyrolysis products so formed

• Main Authors: VASIC MILENA, VAN DUREN RUBEN, VAN DER BEEK DAVID, KOCH MELLE, VAN DEN OETELAAR LEONARDUS CORNELIS ALBERTUS, PRONK MARTINUS HENRICUS
• Format: Patent
• Language: English
• Published: 27.05.2015
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; PYROLIGNEOUS ACID; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; WORKING-UP PITCH, ASPHALT, BITUMEN, TAR

Biomass material is pyrolyzed in the absence of air, O2, H2, and solvent (e.g., H2O) at 500 DEG C or above in a reactor containing (i) a catalyst which as charged is a rehydrated calcined calcium-containing layered dihydroxide comprised of particles having an average particle size in the range of about 40 to about 400 microns (preferably in the range of about 50 to about 150 microns), which optionally is in a pre-agglomerized form, and (ii) a particulate fluidizable heat transfer medium, preferably sand; and condensing and isolating pyrolysis oil produced and collecting and isolating non-condensable gases separately from the condensed isolated liquid pyrolysis oil product. Pyrolysis oil obtained directly from the pyrolysis has a total acid number less than 70 mg/KOH/g; and a weight percentage of O2 removal of 72 wt% or more as determined by a described test procedure and as calculated using an expression given in the text.