Title:
METHOD AND FACILITY FOR SORTING AND SEPARATING WASTE PLASTIC
Document Type and Number:
WIPO Patent Application WO/2011/040317
Kind Code:
A1
Abstract:
Disclosed is a facility for precisely sorting, by material, waste plastic that includes many types of material. Said facility is provided with: a crusher (11) that pulverizes a waste plastic feedstock into waste plastic fragments having a prescribed size; a steam-cleaning device (13) that is disposed downstream from the crusher and that cleans the waste plastic fragments; a primary wet specific-gravity sorter (14) and a secondary wet specific-gravity sorter (15) that are disposed downstream from the steam-cleaning device and that use separation liquids, which have specific gravities in the middle of the specific gravities of the materials included in the waste plastic fragments, to separate out at most three types of floating or sinking specific-gravity-sorted fragments; and first through third electrostatic separation devices (16A-16C), each of which is disposed downstream of the primary and secondary wet specific-gravity sorters and has a frictional charging device, which frictionally charges the specific-gravity-sorted fragments, and an electrostatic sorter that puts the frictionally-charged specific-gravity-sorted fragments in an electrostatic field between a rotating drum electrode to which a high voltage is applied and an opposing electrode, thereby changing the direction the fragments fall and separating said fragments by material.
Inventors:
ANDO, Kazuo (())
安藤 和男 (())
INOUE, Tetsuya (())
安藤 和男 (())
INOUE, Tetsuya (())
Application Number:
JP2010/066481
Publication Date:
April 07, 2011
Filing Date:
September 24, 2010
Export Citation:
Assignee:
HITACHI ZOSEN CORPORATION (7-89, Nanko-kita 1-chome Suminoe-k, Osaka-shi Osaka 59, 〒5598559, JP)
日立造船株式会社 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 Osaka, 〒5598559, JP)
KYOWA SANGYO CO., LTD. (568-1, Ooaza Kawazura Kounosu-sh, Saitama 61, 〒3650061, JP)
協和産業株式会社 (〒61 埼玉県鴻巣市大字川面５６８―１ Saitama, 〒3650061, JP)
ANDO, Kazuo (())
安藤 和男 (())
日立造船株式会社 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 Osaka, 〒5598559, JP)
KYOWA SANGYO CO., LTD. (568-1, Ooaza Kawazura Kounosu-sh, Saitama 61, 〒3650061, JP)
協和産業株式会社 (〒61 埼玉県鴻巣市大字川面５６８―１ Saitama, 〒3650061, JP)
ANDO, Kazuo (())
安藤 和男 (())
International Classes:
B29B17/00; B03B5/36; B03B9/06; B03C7/02; B03C7/06; B29B17/04
Attorney, Agent or Firm:
HARADA, Yohei (OX Nishihonmachi Bldg. 4th Floor, 10-10 Nishi-Hommachi 1-chome,Nishi-ku, Osaka-shi, Osaka 05, 〒5500005, JP)
Download PDF: