Recycle content cracked effluent

1 . A recycle content cracked effluent composition (r-cracked effluent) exiting a coil of a radiant section of a cracker furnace, wherein said r-cracked effluent is produced by cracking a cracker feed comprising r-pyoil, said r-cracked effluent comprising:

propylene in an amount ranging from 0.5 to 30 weight percent; and

ethylene in an amount ranging from 40 to 90 weight percent; and

wherein said r-pyoil has not been hydrogenated; and wherein said r-pyoil comprises not more than about 30 weight percent total aromatics, based on the total weight of said r-pyoil.

2 . The composition of claim 1 , further comprising steam in an amount of at least 5 weight percent base on the total weight of said r-cracked effluent and/or not more than 90 weight percent base on the total weight of said r-cracked effluent.

3 . The composition of claim 2 , wherein said r-cracked effluent has an olefins-to-aromatics ratio of at least 1.25:1 and/or not more than 100:1.

4 . The composition of claim 3 , wherein said r-cracked effluent comprises one or more additional compounds selected from the following list: (i) comprises formaldehyde, (ii) methanol, (iii) acetone, (iv) acetaldehyde, (v) COS, (vi) CO2, (vii) total sulfur, (viii) nitrogen-containing compounds, (ix) chloromethane, (x) methylacetylene and propadiene (MAPD), and/or (xi) oxygenated compounds excluding CO and compounds (i)-(x) listed previously.

5 . The composition of claim 4 , wherein at least one of said additional compounds (i)-(xi) present in said r-cracked effluent is derived from the r-pyoil.

6 . The composition of claim 5 , wherein said r-cracked effluent comprises said additional compounds (i)-(xi) in a combined amount of at least 0.0001 weight percent and/or not more than 5 weight percent.

7 . The composition of claim 6 , wherein said r-cracked effluent comprises:

(i) formaldehyde in an amount of at least 1 ppm and/or not more than 500 pp;

(ii) methanol in an amount of at least 0.001 ppm and/or not more than 100 ppm;

(iii) acetone in an amount of at least 1 ppm and/or not more than 250 ppm;

(iv) acetaldehyde in an amount of at least 1 ppm and/or not more than 250 ppm;

(v) COS in an amount of at least 0.001 ppbv and/or not more than 250 ppbv;

(vi) CO 2 in an amount of at least 1 ppm and/or not more than 10,000 ppm;

(vii) total sulfur in an amount of at least 1 ppm and/or not more than 250 ppm;

(viii) nitrogen-containing compounds in an amount of at least 1 ppm and/or not more than 25 ppm;

(ix) chloromethane in an amount of at least 0.0001 ppm and/or not more than 100 ppm;

(x) MAPD in an amount of at least 10 ppm and/or not more than 100000 ppm; and/or

(xi) oxygenated compounds excluding CO, CO2, and compounds (i)-(ix) in an amount of at least 1 ppm and/or not more than 5000 ppm.

8 . The composition of claim 7 , wherein at least a portion of said recycle content pyrolysis oil composition is produced by waste plastic.

9 . The composition of claim 8 , wherein said r-pyoil originates from one or more of the following compounds: (i) a primary polymer of said recycled waste plastic, (ii) a catalyst used to make said recycled waste plastic, (iii) an impurity of said recycled waste plastic, (iv) a plasticizer of said recycled waste plastic, (v) a flame retardant of said recycled waste plastic, (vi) an antioxidant of said recycled waste plastic, (vii) a thermal stabilizer of said recycled waste plastic, (viii) a light stabilizer of said recycled waste plastic, (ix) a pigment of said recycled waste plastic, (x) a lubricant of said recycled waste plastic, (xi) an acid scavenger of said recycled waste plastic, and/or (xii) an antistatic agent of said recycled waste plastic.

10 . The composition of claim 9 , wherein said r-cracked effluent has an olefin-to-C6+ ratio of at least about 1.5:1.

11 . The composition of claim 10 , wherein said composition comprises at least 50 weight percent of propylene and/or not more than 99 weight percent propylene.

12 . The composition of claim 11 , wherein said composition comprises at least 50 weight percent of ethylene and/or not more than 99 weight percent ethylene.

13 . The composition of claim 12 , wherein said composition comprises at least 1 weight percent butadiene and/or not more than about 40 weight percent butadiene.

14 . The composition of claim 13 , wherein said composition comprises at least 1 weight percent C1 and lighter or C2 and lighter components.

15 . The composition of claim 14 , wherein said composition comprises at least 1 weight percent C3 and heavier or C4 and heavier components.

16 . A recycle content cracked effluent composition (r-cracked effluent) formed by cracking a cracker feed stream comprising r-pyoil, to produce an olefin-containing composition having an olefin-to-aromatic weight ratio of greater than 2:1; wherein said r-pyoil has a C 8 +content of at least 35 weight percent, based on the total weight of said r-pyoil; and wherein said r-pyoil comprises not more than about 30 weight percent total aromatics, based on the total weight of said r-pyoil.

17 . The composition of claim 16 , wherein said r-cracked effluent comprises aromatics in an amount of at least 0.1 weight percent and/or not more than 30 weight percent.

18 . A recycle content cracked effluent composition (r-cracked effluent) formed by cracking a cracker feed stream comprising a recycle content pyrolysis oil composition (r-pyoil); wherein said r-pyoil has not been hydrogenated; and wherein said r-pyoil comprises not more than about 30 weight percent total aromatics, based on the total weight of said r-pyoil; and wherein said r-cracked effluent has an elevated amount of one or more of the following compounds (i) through (iiii): (i) butadiene; (ii) cyclopentadiene; and (iii) dicyclopentadiene, wherein said elevated amount is relative to r-cracked effluent made with said cracker feed stream except without said r-pyoil and at the same mass cracker feed rate.