US 11,952,544 B2
Method for processing liquefied waste polymers
Heikki Aaltonen, Porvoo (FI); Antti Ojala, Porvoo (FI); Ville Paasikallio, Porvoo (FI); and Antti Kurkijärvi, Porvoo (FI)
Assigned to NESTE OYJ, Espoo (FI)
Appl. No. 18/259,805
Filed by Neste Oyj, Espoo (FI)
PCT Filed Oct. 28, 2021, PCT No. PCT/FI2021/050729
§ 371(c)(1), (2) Date Jun. 29, 2023,
PCT Pub. No. WO2022/144490, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 20206384 (FI), filed on Dec. 30, 2020.
Prior Publication US 2024/0034946 A1, Feb. 1, 2024
Int. Cl. C10G 65/12 (2006.01); B01D 3/14 (2006.01); B01J 23/882 (2006.01); B01J 23/883 (2006.01)
CPC C10G 65/12 (2013.01) [B01D 3/14 (2013.01); B01J 23/882 (2013.01); B01J 23/883 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for processing liquefied waste polymers (LWP), the method comprising the following steps:
a) providing a LWP stream containing diolefins and naphtha;
b) subjecting the LWP stream to hydrotreatment reaction conditions in a presence of hydrogen and one or more hydrotreatment catalyst to produce diolefin depleted LWP stream, wherein the hydrotreatment reaction conditions include temperature 120-210° C. and pressure 1-50 barg;
c) distilling the diolefin depleted LWP stream to obtain one or more distillates including at least a naphtha fraction boiling below 180° C. at atmospheric pressure and a distillation bottom; and
d) subjecting the naphtha fraction of step c) to hydroprocessing reaction conditions in a presence of hydrogen and one or more hydroprocessing catalysts to produce hydrogenated naphtha.