WASTE PLASTIC TREATMENT METHOD

• Main Authors: MIYAOKA MASAO, HORIGUCHI TADAHIRO, HANDA TOMOHIKO, KAWAZOE SHIGEMI, MORI DAISUKE, HIRAMATSU YOSHIBUMI
• Format: Patent
• Language: English; Japanese
• Published: 20.05.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; CRACKING HYDROCARBON OILS; FUELS; GENERAL PROCESSES OF COMPOUNDING; LUBRICANTS; METALLURGY; MINERAL WAXES; ORGANIC MACROMOLECULAR COMPOUNDS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

To provide a waste plastic treatment method capable of improving decomposability of a waste plastic.SOLUTION: A waste plastic treatment method includes the steps of: supplying a waste plastic to a melting device; melting the waste plastic and thereby preparing a molten waste plastic; supplying stock oil to the molten waste plastic from one or more first supply lines, and thereby preparing a molten waste plastic mixed oil; supplying the molten waste plastic mixed oil to a mixing device; mixing the molten waste plastic mixed oil supplied to the mixing device, and thereby preparing a mixture for decomposition treatment; and supplying the prepared mixture for decomposition treatment to a decomposition treatment device, in which the step of preparing the mixture for decomposition treatment prepares a mixture for decomposition treatment so that kinetic viscosity at 160°C is 1 mm2/s or more and 60 mm2/s or less.SELECTED DRAWING: Figure 1 【課題】廃プラスチックの分解性を向上できる廃プラスチック処理方法の提供。【解決手段】溶融装置に、廃プラスチックを供給する工程と、廃プラスチックを溶融することにより、溶融廃プラスチックを調製する工程と、１以上の第１供給ラインから、溶融廃プラスチックに原料油を供給することにより、溶融廃プラスチック混合油を調製する工程と、溶融廃プラスチック混合油を混合装置に供給する工程と、混合装置に供給された溶融廃プラスチック混合油を混合することにより、分解処理用混合物を調製する工程と、調製された分解処理用混合物を分解処理装置に供給する工程とを有し、分解処理用混合物を調製する工程は、１６０℃における動粘度が１ｍｍ２／ｓ以上６０ｍｍ２／ｓ以下になるように分解処理用混合物を調製する廃プラスチック処理方法。【選択図】図１