Method of management of fly ashes from the combustion of petroleum products
AssigneeRE-Solve Sp. z.o.o.
InventorsMateusz CYMANSKI, Malgorzata OLEJARCZYK, Wlodzimierz URBANIAK, Joanna SZYMANSKA, Marek SZOSTAK, Dominik PAUKSZTA, Kamil ZIUZIAKOWSKI
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Abstract
A method for utilization of fly ash derived from the combustion of petroleum-derived products includes a step of preparation of fillers, especially for thermoplastic polymers, or a step of recovery of metals, especially vanadium, from fly ash derived from the combustion of heavy fractions of petroleum-derived products. Also a filter is included in composites of thermoplastic polyolefin polymers, and the composites of thermoplastic polyolefin polymers include the filters.
Claims5
A method for utilization of fly ash derived from the combustion of petroleum-derived products comprising a step of preparing a filler, especially for thermoplastics, containing carbon, comprising adding water to fly ash derived from the combustion of heavy fractions of crude oil in a ratio of 1:3 to 1:5 and at a temperature of 15° C. to 80° C., preferably 20° C. to 40° C., mixing it until a highly acidic solution with a pH of less than 2, preferably 0.5 to 1.5, optionally adding a solution of sulfuric (VI) acid or sulfuric (IV) acid, followed by the resulting solution being separated from the undissolved precipitate using a known method, preferably by way of filtration or centrifugation, followed by washing the resulting precipitate with water until the electrolytic conductivity of the filtrate is below 1 mS, followed by the precipitate being dried to a solid form.
A filler, especially for thermoplastics, containing carbon, wherein the filler is a black powder comprising spherical porous particles with a grain size of 10 to 120 μm, mainly 30 to 80 μm, containing 50 to 80% carbon, mostly 70 to 75%, with the other components being primarily compounds of silicon, iron, aluminum and sulfur, and with a specific surface area of more than 6 to 15 m2/g, derived from fly ash from the combustion of heavy oil fractions after separating acid-soluble metal and sulfur compounds therefrom.
A method for utilization of fly ash derived from the combustion of petroleum-derived products comprising a step of recovery of metals, especially vanadium, from fly ash derived from the combustion of heavy fractions of petroleum-derived products, comprising in leaching metals in an acidic environment and selective precipitation of metals from the solution obtained, wherein water is added to the fly ash derived from the combustion of heavy fractions of petroleum at a ratio of 1:3 to 1:5 and at a temperature of 15° C. to 80° C., preferably 20° C. to 40° C.;
- this is mixed to produce a highly acidic solution with a pH below 2, preferably 0.5 to 1.5, possibly with the addition of a solution of sulfuric (VI) acid or sulfuric (IV) acid, followed by the resulting solution being separated from the undissolved precipitate using a known method, preferably by filtration or centrifugation, followed by the vanadium compounds being precipitated from the purified solution by adding an aqueous solution of a strong oxidant, preferably a 20 to 30% aqueous solution of hydrogen peroxide, maintaining the mixture at a temperature of 70° C. to 90° C., preferably 80° C. to 85° C. for 0.5 to 5 hours, preferably 1 to 2 hours, while as an option, other metals forming insoluble hydroxides, in particular nickel, iron and aluminum, are precipitated from the solution remaining after precipitation of vanadium, by increasing, using alkaline hydroxides, the reaction of the solution to 9.0 to 11.0, preferably 10.5, followed by, having filtered off the precipitate obtained under alkaline conditions, sulfates are precipitated from the resulting filtrate, using soluble calcium compounds, in the form of calcium sulfate.
Dependencies are inferred from the claim text.