发明名称 |
METHOD FOR MOLDING WASTE PLASTIC AND METHOD FOR THERMAL DECOMPOSITION OF PLASTIC |
摘要 |
<p>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.</p> |
申请公布号 |
CA2650679(A1) |
申请公布日期 |
2007.11.08 |
申请号 |
CA20062650679 |
申请日期 |
2006.11.13 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
KOSEKI, TSUNEO;TOODA, YUUJI;HIROMATSU, TAKASHI;SHIOZAWA, SYUUICHI;IBARAKI, TETSUHARU;SAKATANI, MASATOSHI;SATO, TAKASHI;MORI, YASUHIKO |
分类号 |
B29B9/10;B29B9/06;B29B17/00;C08J11/12;C10B53/07;C10B57/04;C10L5/48 |
主分类号 |
B29B9/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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