A method for forming waste plastic and a method for thermal cracking thereof
The invention is directed to producing high-density pellets by molding waste plastic and to producing high-strength coke by mixing the pellets with coal and dry-distilling the mixture in a coke oven. As feedstock is used waste plastic that contains polyethylene, polypropylene and polystyrene, which...
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| creator | IBARAKI, TETSUHARU SATO, TAKASHI SHIOZAWA, SYUUICHI SAKATANI, MASATOSHI HIROMATSU, TAKASHI MORI, YASUHIKO TOODA, YUUJI KOSEKI, TSUNEO |
| description | The invention is directed to producing high-density pellets by molding waste plastic and to producing high-strength coke by mixing the pellets with coal and dry-distilling the mixture in a coke oven. As feedstock is used waste plastic that contains polyethylene, polypropylene and polystyrene, which are plastics that soften at a low temperature, at a total rate of 50% or greater. The waste plastic is molded using a molding method of extruding it from a nozzle of a screw-type stuffing machine. In the method of this invention, the waste plastic is heated to 180 - 260 °C in the molding machine and gas in the molding machine is sucked out. By this operation, the polyethylene, polypropylene and/or polystyrene are made molten and the amount of gas in the plastic is reduced. The plastic in this state is compression-molded by extrusion from a nozzle of 15 - 60 mm diameter. The plastic molding obtained is cut into chunks and cooled with a water cooler within 3 seconds after cutting. |
| format | Patent |
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As feedstock is used waste plastic that contains polyethylene, polypropylene and polystyrene, which are plastics that soften at a low temperature, at a total rate of 50% or greater. The waste plastic is molded using a molding method of extruding it from a nozzle of a screw-type stuffing machine. In the method of this invention, the waste plastic is heated to 180 - 260 °C in the molding machine and gas in the molding machine is sucked out. By this operation, the polyethylene, polypropylene and/or polystyrene are made molten and the amount of gas in the plastic is reduced. The plastic in this state is compression-molded by extrusion from a nozzle of 15 - 60 mm diameter. The plastic molding obtained is cut into chunks and cooled with a water cooler within 3 seconds after cutting.</description><language>chi ; eng</language><subject>CHEMISTRY ; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS ; FUELS ; LUBRICANTS ; MAKING GRANULES OR PREFORMS ; METALLURGY ; PEAT ; PERFORMING OPERATIONS ; PETROLEUM, GAS OR COKE INDUSTRIES ; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED ; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS ; TECHNICAL GASES CONTAINING CARBON MONOXIDE ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2009</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090721&DB=EPODOC&CC=TW&NR=I312309B$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090721&DB=EPODOC&CC=TW&NR=I312309B$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IBARAKI, TETSUHARU</creatorcontrib><creatorcontrib>SATO, TAKASHI</creatorcontrib><creatorcontrib>SHIOZAWA, SYUUICHI</creatorcontrib><creatorcontrib>SAKATANI, MASATOSHI</creatorcontrib><creatorcontrib>HIROMATSU, TAKASHI</creatorcontrib><creatorcontrib>MORI, YASUHIKO</creatorcontrib><creatorcontrib>TOODA, YUUJI</creatorcontrib><creatorcontrib>KOSEKI, TSUNEO</creatorcontrib><title>A method for forming waste plastic and a method for thermal cracking thereof</title><description>The invention is directed to producing high-density pellets by molding waste plastic and to producing high-strength coke by mixing the pellets with coal and dry-distilling the mixture in a coke oven. As feedstock is used waste plastic that contains polyethylene, polypropylene and polystyrene, which are plastics that soften at a low temperature, at a total rate of 50% or greater. The waste plastic is molded using a molding method of extruding it from a nozzle of a screw-type stuffing machine. In the method of this invention, the waste plastic is heated to 180 - 260 °C in the molding machine and gas in the molding machine is sucked out. By this operation, the polyethylene, polypropylene and/or polystyrene are made molten and the amount of gas in the plastic is reduced. The plastic in this state is compression-molded by extrusion from a nozzle of 15 - 60 mm diameter. 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| language | chi ; eng |
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| subjects | CHEMISTRY DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS FUELS LUBRICANTS MAKING GRANULES OR PREFORMS METALLURGY PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | A method for forming waste plastic and a method for thermal cracking thereof |
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