Methodology for upgrading and cleaning of used tires, waste lubricants as well as any kind of oils and fats for utilization as feedstock in thermochemical conversion processes
OwnerStylianos Arvelakisinventor
Life of this patent
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Abstract
A methodology for cleaning and upgrading any kind of tires (cars, motorcycles, trucks, etc.), any kind of waste lubricants (internal combustion engines, industrial parts), any kind of oils as well as plant and animal fats by means of removal of the inorganic elements (potassium, sodium, chlorine, sulfur, phosphorus and heavy metals such as Pb, Cu, Cd, Zn, Hg, Mn, etc.) and the simultaneous addition of new such as calcium, magnesium and ammonium, in order to produce a clean and upgraded rubber material, lubricant as well as fat/oil, which can be used as raw material in thermochemical conversion processes such as flash (t<1 sec)/fast pyrolysis.
Claims16
A method for leaching a raw material comprising at least one selected from the group consisting of tires, waste lubricants, vegetable oils, and animal fats, the method comprising:
- a) contacting the raw material with an aqueous solution comprising a salt or salt mixture in a reactor under leaching conditions to remove inorganic elements of potassium, sodium, chlorine, sulfur, phosphorus, copper, lead, zinc, chromium, mercury, cadmium, manganese, nickel, vanadium, barium, and molybdenum while adding calcium, magnesium, aluminum and ammonium to produce an upgraded material, wherein:
- the salt or salt mixture comprises calcium and a total amount of salt or salt mixture in the aqueous solution is 0.5 to 4 wt %,
- the leaching conditions include a temperature of 110° C. to 250° C., a pressure of 2 to 45 atm, and a time of 1 min to 2 h, and
- a pH within the reactor is kept neutral or basic;
- b) separating an aqueous phase from the upgraded material.
Dependencies are inferred from the claim text.