	US 11,667,854 B2
	Process for the preparation of polypropylenes from waste plastic feedstocks
Anthoni Van Zijl, Geleen (NL); Nicolas Goyheneix, Geleen (NL); Lara Galan-Sanchez, Geleen (NL); Christoph Roosen, Geleen (NL); Johan Pastwa, Geleen (NL); and Safa Farajzadeh Bibalan, Geleen (NL)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom (NL)
Appl. No. 17/425,173
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom (NL)
PCT Filed Jan. 24, 2020, PCT No. PCT/EP2020/051731 § 371(c)(1), (2) Date Jul. 22, 2021, PCT Pub. No. WO2020/152320, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 19153458 (EP), filed on Jan. 24, 2019; application No. 19153897 (EP), filed on Jan. 28, 2019; application No. 19157064 (EP), filed on Feb. 14, 2019; application No. 19157324 (EP), filed on Feb. 14, 2019; and application No. 19157898 (EP), filed on Feb. 19, 2019.
Prior Publication US 2022/0089957 A1, Mar. 24, 2022
Int. Cl. C10G 50/00 (2006.01); C10G 55/04 (2006.01); B29B 17/04 (2006.01); C08J 11/00 (2006.01); C10G 9/14 (2006.01); C10G 57/02 (2006.01); C10G 69/12 (2006.01); C10G 1/10 (2006.01); C10G 47/00 (2006.01); B29C 48/275 (2019.01); B29B 17/02 (2006.01); C08J 11/06 (2006.01); C10G 51/02 (2006.01); C08J 11/12 (2006.01); C08J 11/14 (2006.01); C08L 23/06 (2006.01); B29B 17/00 (2006.01)

CPC C10G 50/00 (2013.01) [B29B 17/02 (2013.01); B29B 17/04 (2013.01); B29C 48/277 (2019.02); C08J 11/00 (2013.01); C08J 11/06 (2013.01); C08J 11/12 (2013.01); C08J 11/14 (2013.01); C08L 23/06 (2013.01); C10G 1/10 (2013.01); C10G 9/14 (2013.01); C10G 47/00 (2013.01); C10G 51/023 (2013.01); C10G 57/02 (2013.01); C10G 69/12 (2013.01); B29B 2017/0089 (2013.01); B29B 2017/0203 (2013.01); B29B 2017/0496 (2013.01); C08J 2300/30 (2013.01); C08L 2207/20 (2013.01); C10G 2300/1003 (2013.01); C10G 2300/1085 (2013.01); C10G 2300/1096 (2013.01); C10G 2300/201 (2013.01); C10G 2400/20 (2013.01)]

16 Claims

1. Process for the production of propylene-based polymers from waste plastics feedstocks comprising the steps in an order of:

(a) providing a hydrocarbon stream A obtained by treatment of a waste plastics feedstock;

(b) providing a hydrocarbon stream B;

(c) supplying a feed C comprising a fraction of the hydrocarbon stream A and a fraction of the hydrocarbon stream B to a thermal cracker furnace comprising cracking coil(s);

(d) performing a thermal cracking operation in the presence of steam to obtain a cracked hydrocarbon stream D;

(e) supplying the cracked hydrocarbon stream D to a separation unit;

(f) performing a separation operation in the separation unit to obtain a product stream E comprising propylene;

(g) supplying the product stream E to a polymerisation reactor; and

(h) performing a polymerisation reaction in the polymerisation reactor to obtain an propylene-based polymer;

wherein in step (d):

the coil outlet temperature is >805 and <835° C.; and

the weight ratio of steam to feed C is >0.3 and <0.8 and wherein

(i) the hydrocarbon stream A comprises:

>25.0 and <50.0 wt %, of n-paraffins;

>7.5 and <15.0 wt %, of iso-paraffins;

>15.0 and <25.0 wt %, of olefins;

>7.5 and <15.0 wt %, of napthenes; and

>7.5 and <12.5 wt %, of aromatics;

with regard to the total weight of the hydrocarbon stream A; and

(ii) the hydrocarbon stream B comprises:

>25.0 and <50.0 wt %, of n-paraffins;

>5.0 and <40.0 wt %, of iso-paraffins;

<2.0 wt %, of olefins;

>7.5 and <30.0 wt %, of napthenes; and

>7.5 and <20.0 wt %, of aromatics with regard to the total weight of the hydrocarbon stream B, and

wherein in step (c), the feed C comprises >1.0 and <10.0 wt %, of hydrocarbon stream A, with regard to the total weight of feed C.