Desulfurization process of waste tire pyrolysis oil to produce fuel
AssigneeWastefront AS
InventorsHenrik Selstam, Jorge Moreno Trejo, John William Hemmings
Life of this patent
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Abstract
A method and system desulfurizes fuel produced from pyrolysis of waste tires and includes hydroprocessing tire pyrolysis oil to desulfurize the tire pyrolysis oil and obtain a hydroprocessed pyrolysis oil. The hydroprocessed oil is distilled into at least two environmentally fuel products selected from the group consisting of kerosene, naphtha, fuel oil, fuel and diesel. By combining hydroprocessing with distillation, and advantageously recycling byproducts, the methods of this disclosure allow for conversion of waste tires into fuel in a manner that is commercially viable and sustainable.
Claims6
A method of producing desulfurized fuel produced from pyrolysis of waste tires comprising:
- pyrolyzing waste tires to obtain a vapor phase and a solid phase;
- a) condensing the vapor phase in a condenser to obtain the tire pyrolysis oil and a remaining vapor phase;
- b) scrubbing the remaining vapor phase with water or an alkali to form a scrubbed fuel gas;
- c) scrubbing the remaining vapor phase with water or an alkali to form a scrubbed fuel gas;
- d) desulfurizing the tire pyrolysis oil by hydroprocessing the tire pyrolysis oil to desulfurize the tire pyrolysis oil and obtain a hydro-processed pyrolysis oil;
- and
- e) distilling the hydro-processed oil into at least two fuel products selected from the group consisting of kerosene, naphtha, fuel oil, fuel and diesel;
- f) recovering the fuel gas and combusting the fuel gas in a generator as a fuel source to generate electricity,
- g) utilizing the electricity supplied by the generator to generate hydrogen by electrolysis,
- h) utilizing the hydrogen to perform hydroprocessing of further tire pyrolysis oil;
- and
- i) removing the solid phase for recovery of carbon black.
Dependencies are inferred from the claim text.