IP Library › Granted Patent US 12,600,911
Granted Patent B2
US 12,600,911 · App. 17/595,511 · Granted Apr 14, 2026

Cracking a C4-C7 fraction of pyoil

Inventors: Daryl Bitting (Longview, TX); Kenny Randolph Parker (Afton, TN); Michael Gary Polasek (Longview, TX); David Eugene Slivensky (Tatum, TX); Xianchun Wu (Longview, TX); Jerome Leonard Stavinoha, Jr. (Longview, TX)
Assignee: ExxonMobil Product Solutions Company
C10G9/00C10G2300/1003C10G2300/301C10G2400/20
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Quick Facts
Patent No.
US 12,600,911
App. No.
17/595,511
Granted
Apr 14, 2026
Kind
B2
Abstract

A hydrocarbon cracker stream is combined with recycle content pyrolysis oil to form a combined cracker stream and the combined cracker stream is cracked in a cracker furnace to provide an olefin-containing effluent. The r-pyoil can be fed to the cracker feed. Alternatively, the r-pyoil with a predominantly C 4 -C 7 fraction can be fed to the cracker feed. The furnace can be a gas fed furnace, or split cracker furnace.

Claims (8)

1 . A steam cracker feedstock composition comprising (i) a recycle content pyrolysis oil composition (r-pyoil), wherein said r-pyoil has not been hydrotreated; wherein said r-pyoil has a C8+ content of at least 35 weight percent, based on the total weight of said r-pyoil; wherein said r-pyoil comprises not more than about 30 weight percent total aromatics, based on the total weight of said r-pyoil; wherein said r-pyoil is present in said steam cracker feedstock in an amount of not more than about 40 weight percent and/or at least about 1 weight percent; and wherein said r-pyoil comprises at least 35 weight percent of C4 to C7 hydrocarbons, based on the total weight of the r-pyoil, and (ii) a C2 to C4 non recycle hydrocarbon stream comprising ethane and/or propane, in an amount of at least 55 weight percent, based on the total weight of the steam cracker feedstock.

2 . The composition of claim 1 , wherein at least 1 weight percent of said r-pyoil is obtained from the pyrolysis of recycled waste.

3 . The composition of claim 2 , wherein not more than 95 weight percent of said r-pyoil is obtained from the pyrolysis of recycled waste.

4 . The composition of claim 3 , wherein said recycled waste comprises recycled waste plastic.

5 . The composition of claim 4 , wherein said recycled waste comprises waste plastics, waste textiles, waste carpet fibers, waste modified cellulose, waste biomass, post-industrial waste streams, intermediate industrial waste streams, or combinations thereof.

6 . The composition of claim 1 , wherein said C2-C4 non recycle hydrocarbon stream comprises at least 65 weight percent propane.

7 . The composition of claim 1 , wherein said C2-C4 non recycle hydrocarbon stream comprises at least 65 weight percent ethane.

8 . The composition of claim 1 , wherein said steam cracker feedstock has a total C15+ content of not more than 25 weight percent, based on the total weight of the stream.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 20, 2025
From: EASTMAN CHEMICAL COMPANY
To: EXXONMOBIL PRODUCT SOLUTIONS COMPANY
Reel/Frame 073142/0954 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 25, 2022
From: BITTING, DARYL; PARKER, KENNY RANDOLPH; POLASEK, MICHAEL GARY; SLIVENSKY, DAVID EUGENE; WU, XIANCHUN; STAVINOHA, JEROME LEONARD, JR
To: EASTMAN CHEMICAL COMPANY
Reel/Frame 058754/0699 →
Continuity (2)
Provisional Application 62852365 · May 24, 2019
Related Publication 20220228071A1 · Jul 21, 2022
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Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Feb. 23, 2021 for International Application No. PCT/US2020/057876. [cited by applicant]
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Sep. 9, 2020 for International Application No. PCT/US2020/034151. [cited by applicant]
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Sep. 9, 2020 for International Application No. PCT/US2020/034139. [cited by applicant]
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Aug. 27, 2020 for International Application No. PCT/US2020/034147. [cited by applicant]
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Sep. 4, 2020 for International Application No. PCT/US2020/034166. [cited by applicant]
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Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Apr. 19, 2021 for International Application No. PCT/US2020/059316. [cited by applicant]
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Mar. 5, 2021 for International Application No. PCT/US2020/059324. [cited by applicant]
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Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Nov. 11, 2020 for International Application No. PCT/US2020/043944. [cited by applicant]
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority with Date of Mailing Mar. 8, 2021 for International Application No. PCT/US2020/059327. [cited by applicant]
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