US 12,258,451 B2
Method and system for the elimination of odours in recycled plastics
Andrés Fullana Font, San Vicente del Raspeig (ES); and Andrea Cabanes Gil, San Vicente del Raspeig (ES)
Assigned to UNIVERSIDAD DE ALICANTE, San Vicente del Raspeig (ES)
Appl. No. 17/596,049
Filed by UNIVERSIDAD DE ALICANTE, San Vicente del Raspeig (ES)
PCT Filed Dec. 4, 2019, PCT No. PCT/ES2019/070824
§ 371(c)(1), (2) Date Dec. 2, 2021,
PCT Pub. No. WO2020/245476, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. ES201930501 (ES), filed on Jun. 4, 2019.
Prior Publication US 2022/0298323 A1, Sep. 22, 2022
Int. Cl. C08J 11/06 (2006.01); B01D 3/38 (2006.01); B09B 3/35 (2022.01); B09B 3/45 (2022.01); B09B 3/70 (2022.01); B09B 101/75 (2022.01); B29B 17/02 (2006.01); B29B 17/04 (2006.01); B29K 105/26 (2006.01)
CPC C08J 11/06 (2013.01) [B01D 3/38 (2013.01); B09B 3/35 (2022.01); B09B 3/45 (2022.01); B09B 3/70 (2022.01); B29B 17/02 (2013.01); B29B 17/0404 (2013.01); B09B 2101/75 (2022.01); B29K 2105/26 (2013.01); C08J 2300/30 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system for eliminating odors in recycled plastic materials comprising:
a plant for separation by identification wherein a plastic material with volatile organic compounds enters;
a shredder for reducing a size of the plastic material to provide a shredded material;
a washing tank, for chemically washing the shredded material with surfactant to provide a washed material;
a rinsing tank, for rinsing the washed material to provide a rinsed material;
a mechanical dryer, for drying the rinsed material to provide a dry material; and
a deodorizing module (MD) comprising:
a distillation column through which the dry material enters, wherein the volatile organic compounds of the plastic material are removed by means of steam distillation, and through which volatile organic compound- and odor-free plastic exits;
a droplet separator that receives organic product removed by the means of steam distillation;
an isothermal tank that receives a liquid fraction obtained from the droplet separator;
a separator that receives a portion of an organic phase from the isothermal tank; and
a steam boiler that supplies steam to the distillation column; and that receives a steam fraction from the droplet separator and an aqueous phase from the isothermal tank.