CATALYST, METHOD OF RECYCLING POLYMER WASTES USING SAID CATALYST AND METHOD OF PRODUCING ENGINE FUEL AND OIL

FIELD: chemistry. ^ SUBSTANCE: invention relates to methods of recycling polymer wastes and specifically catalytic decomposition of said wastes to obtain engine fuel and/or components thereof. The method involves conversion of polymer wastes, such as polyethylene, polypropylene, polystyrene or any m...

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Hauptverfasser: KIKHTJANIN OLEG VLADIMIROVICH, ECHEVSKIJ GENNADIJ VIKTOROVICH, AKSENOV DMITRIJ GRIGOR'EVICH
Format: Patent
Sprache:eng ; rus
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Zusammenfassung:FIELD: chemistry. ^ SUBSTANCE: invention relates to methods of recycling polymer wastes and specifically catalytic decomposition of said wastes to obtain engine fuel and/or components thereof. The method involves conversion of polymer wastes, such as polyethylene, polypropylene, polystyrene or any mixtures thereof, into a mixture of hydrocarbons. The process is carried out in the presence of a catalyst at temperature 350-550C and pressure not higher than 1.5 MPa. The catalyst used is a zeolite with aluminosilicate composition with molar ratio SiO2/AlO3 not higher than 450 and a structure of the type: ZSM-5, ZSM-11, ZSM-35, ZSM-38, ZSM-48, BETA, or gallosilicate or galloaluminosilicate or ferrosilicate or ferroaluminosilicate or chromosilicate or chromoaluminosilicate with a ZSM-5, ZSM-11, ZSM-35, ZSM-38, ZSM-48, BETA structure, or aluminophosphate with a structure of the type A1PO-5, A1PO-11, A1PO-31, A1PO-36, A1PO-37, A1PO-40, A1PO-41, with introduction of an element into the structure of any of said types of catalysts, said element being selected from: magnesium, zinc, gallium, manganese, iron, silicon, cobalt, cadmium or any mixture thereof. The obtained mixture of hydrocarbons undergoes further processing to obtain high-quality engine fuel and oil. Use of the catalyst reduces reaction temperature and increases output of liquid hydrocarbons to 85 wt %. Change in the amount of the obtained gasoline, diesel and liquefied gas can be controlled in a wide range by altering process conditions. ^ EFFECT: efficient method of recycling polymer wastes. ^ 11 cl, 17 ex, 3 tbl Изобретение относится к способам утилизации отходов полимеров, а именно каталитической деструкции указанных отходов с получением моторных топлив и/или их компонентов. Способ заключается в превращении отходов полимеров, таких как полиэтилен, полипропилен, полистирол или их любых смесей, в смесь углеводородов. Процесс осуществляют в присутствии катализатора при температуре 350-550°С и давлении не более 1.5 МПа. В качестве катализатора используют цеолит алюмосиликатного состава с мольным отношением SiO2/AlO3 не более 450 и структурой типа: ZSM-5, ZSM-11, ZSM-35, ZSM-38, ZSM-48, BETA, либо галлосиликат, либо галлоалюмосиликат, либо железосиликат, либо железоалюмосиликат, либо хромсиликат, либо хромалюмосиликат со структурой ZSM-5, ZSM-11, ZSM-35, ZSM-38, ZSM-48, BETA, либо алюмофосфат со структурой типа AlPO-5, AlPO-11, AlPO-31, AlPO-36, AlPO-37, AlPO-40, AlPO-41 с введенным в структуру любого из