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1. WO1998015603 - THE METHOD OF OBTAINING LIQUID FUELS FROM POLYOLEFINE WASTES

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[ EN ]

The patent claims
1. The method of obtaining liquid fuels from polyolefin wastes, comprising a thermal degradation of polyolefin raw material in the presence of catalysts, containing metal silicates, and then the distillation of resulted products, characterised in that the properly disintegrated polyolefines in amount of 100 parts by weight are heated, preferably in the temperatures between 180°C to 620 °C, till the moment of a decay of volatile product forming, in the presence of heavy metals silicates as catalysts, added in amount of 1 - 30 parts by weight.
2. The method according to the claim no. 1, characterised in that the transformation is run at the temperatures range between 300 - 450 °C.

3. The method according to the claims 1 and 2, characterised in that as a catalyst iron Fe3+ silicate of is used.
4. The method according to the claims 1 and 2, characterised in that as a catalyst cobalt Co2+ silicate is used.
5. The method according to the claims 1 and 2, characterised in that as a catalyst nickel Ni2+ silicate of is used.
6. The method according to the claims 1 and 2, characterised in that as a catalyst manganium Mn2+ silicate of is used.
7. The method according to the claims 1 and 2, characterised in that as a catalyst chromium Cr3+ silicate of is used.
8. The method according to the claims 1 and 2, characterised in that as a catalyst copper Cu2+ silicate of is used.
9. The method according to the claims 1 and 2, characterised in that as a catalyst zinc Zn2+ silicate of is used.
lO.The method according to the claims 1 and 2, characterised in that as a catalyst cadmium Cd2+ silicate of is used.
11. The method according to one or more above claims, characterised in that a catalyst is a mixture of two or more catalysts.

12. The method according to one or more claims from nos 1 to 11, characterized in that the catalyst is used in the amorphic form.
13.The method according to the claim no. 2, characterised in that a catalyst is added in amount from 5 to 10 % by weight, calculating on the mass of the raw material.
14. The method according to the claims nos. 1 or 2, characterised in that a catalyst is recycled and used multiply.
lδ.The method according to the claim no. 1, characterised in that the process is run in a continous way.