Title:
METHOD FOR TREATING AND SEPARATING MIXED CELLULOSE-PLASTIC PRODUCTS
Document Type and Number:
WIPO Patent Application WO/2013/171248
Kind Code:
A3
Abstract:
The invention relates to a method for separating mixed cellulose-plastic products, wherein the following steps are carried out: a) slurrying the mixed cellulose-plastic products with water; b) introducing the slurry produced in step a) into a stirred autoclave and closing the stirred autoclave; c) heating the slurry during continued stirring at a rotational speed of 50 to 350 min-1 to a temperature of 150 to 250°C, at a pressure of 1.2 to 3.0 MPa; d) holding the temperature and the pressure of the slurry heated in step c) during continued stirring for a holding time of 0.3 to 6 hours, wherein the cellulose is hydrolyzed and the plastics are agglomerated into spherical shapes; e) cooling, relieving the pressure of, and opening the stirred autoclave. The separated cellulose hydrolysate can be used for the production of biogas by means of wet fermentation, optionally with the addition of liquid manure and/or other substrates containing nitrogen, or for denitrification in wastewater treatment plants. The separated spherical plastic agglomerate can be used to produce energy by means of combustion.
Inventors:
BUSCH GUENTER (DE)
BURKHARDT MARKO (DE)
WEGNER JENS-ERIK (DE)
BURKHARDT MARKO (DE)
WEGNER JENS-ERIK (DE)
Application Number:
PCT/EP2013/060005
Publication Date:
January 09, 2014
Filing Date:
May 15, 2013
Export Citation:
Assignee:
BTU COTTBUS (DE)
LWG LAUSITZER WASSER GMBH & CO KG (DE)
LWG LAUSITZER WASSER GMBH & CO KG (DE)
International Classes:
D21C1/02; B03B1/00; B09B3/00; C02F3/00; C10L5/40; C13K1/00; D21C3/00; D21C5/00; D21C7/10
Domestic Patent References:
| WO1996027045A1 | 1996-09-06 | |||
| WO2003043939A2 | 2003-05-30 | |||
| WO1997037008A1 | 1997-10-09 | |||
| WO1995024967A1 | 1995-09-21 |
Foreign References:
| US4990244A | 1991-02-05 |
Attorney, Agent or Firm:
MÜLLER & SCHUBERT PATENTANWÄLTE (Berlin, DE)
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