US2024368474A1PendingUtilityA1

Chemical recycling facility and process with enhanced integration

Assignee: EASTMAN CHEM COPriority: Jun 30, 2021Filed: Jun 24, 2022Published: Nov 7, 2024
Est. expiryJun 30, 2041(~14.9 yrs left)· nominal 20-yr term from priority
C10G 2300/4081C10G 2300/4062C10G 2300/1003C10G 9/40C10G 9/00C10G 35/00C10G 3/00C10G 11/18C10G 1/002C10G 1/10
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Claims

Abstract

Processes and facilities for providing recycled content hydrocarbon products (r-products) from recycled content pyrolysis oil (r-pyoil) and recycled content pyrolysis gas (r-pygas). Processing schemes provided herein maximize use of recycled content pyrolysis products to provide a variety of recycled content end products.

Claims

exact text as granted — not AI-modified
1 . A chemical recycling process, the process comprising:
 (a) pyrolyzing waste plastic in a pyrolysis facility to thereby provide a recycled content pyrolysis effluent (r-pyrolysis effluent);   (b) separating at least a portion of said r-pyrolysis effluent to provide a recycled content pyrolysis gas (r-pygas) and recycled content pyrolysis oil (r-pyoil);   (c) introducing at least a portion of said r-pygas into a cracker facility; and   (d) introducing at least a portion of said r-pyoil into a downstream location, wherein the downstream location is not within the cracker facility.   
     
     
         2 . The process of  claim 1 , wherein the pyrolysis facility and the cracker facility are co-located. 
     
     
         3 . The process of  claim 1 , wherein the r-pygas is introduced into the cracker facility at a location downstream of a cracker furnace. 
     
     
         4 . The process of  claim 3 , wherein the r-pygas is introduced into at least one of a quench section, a compression section, and a separation section of the cracker facility. 
     
     
         5 . The process of  claim 1 , wherein at least a portion of the r-pygas is introduced into the cracker facility upstream of a cracker furnace and further comprising, cracking at least a portion of the r-pygas to form a recycled content furnace effluent (r-furnace effluent). 
     
     
         6 . The process of  claim 1 , further comprising, dividing the r-pyoil into two or more portions and introducing a first portion of the r-pyoil into the downstream location. 
     
     
         7 . The process of  claim 1 , wherein the r-pyoil comprises at least 50 weight percent of C4 to C30 hydrocarbon compounds. 
     
     
         8 . The process of  claim 1 , wherein the r-pyoil comprises heteroatom-containing compounds in an amount of not more than 20 weight percent. 
     
     
         9 . The process of  claim 1 , wherein the r-pygas comprises C2 hydrocarbon components in an amount of 5 to 60 weight percent, C3 hydrocarbon components in an amount of 5 to 60 weight percent, C4 hydrocarbon components in an amount of 1 to 60 weight percent, and C5 hydrocarbon components in an amount of 1 to 25 weight percent. 
     
     
         10 . The process of  claim 1 , wherein the downstream location is a carbon reformer. 
     
     
         11 . The process of  claim 1 , wherein the downstream location is an oil refinery and further comprising processing at least a portion of the r-pyoil to thereby produce a recycled content fuel (r-fuel). 
     
     
         12 . The process of  claim 1 , wherein the downstream location is a burner of a furnace. 
     
     
         13 . The process of  claim 1 , wherein the downstream location is another cracker facility. 
     
     
         14 . The process of  claim 1 , wherein the downstream location is a fine chemicals production facility. 
     
     
         15 . The process of  claim 1 , further comprising cracking a hydrocarbon feedstock in a cracker furnace of the cracker facility to produce a furnace effluent stream, and wherein the furnace effluent stream comprises a recycled content furnace effluent stream (r-furnace effluent). 
     
     
         16 . The process according to  claim 15 , wherein the pyrolysis facility and the cracker facility are both commercial scale facilities. 
     
     
         17 . A chemical recycling process, the process comprising:
 (a) pyrolyzing waste plastic to thereby provide a recycled content pyrolysis effluent (r-pyrolysis effluent);   (b) separating at least a portion of said r-pyrolysis effluent to provide a recycled content pyrolysis gas (r-pygas) and recycled content pyrolysis oil (r-pyoil);   (c) introducing at least a portion of said r-pygas into a cracker facility; and   (d) introducing at least a portion of said r-pyoil into one or more of the following locations (i) through (x)—
 (i) a storage apparatus; 
 (ii) a transportation apparatus; 
 (iii) a fluidized catalytic cracker; 
 (iv) a carbon reformer; 
 (v) a distillation column or zone; 
 (vi) a fine chemical facility; 
 (vii) a burner; 
 (viii) an MTO facility; 
 (ix) a different cracker; and 
 (x) an oil refinery. 
   
     
     
         18 . The process of  claim 17 , wherein the r-pyoil comprises heteroatom-containing compounds in an amount of not more than 20 weight percent, and wherein the r-pygas comprises C2 hydrocarbon components in an amount of 5 to 60 weight percent, C3 hydrocarbon components in an amount of 5 to 60 weight percent, C4 hydrocarbon components in an amount of 1 to 60 weight percent, and C5 hydrocarbon components in an amount of 1 to 25 percent. 
     
     
         19 . The process of  claim 17 , wherein the introducing of step (c) includes introducing at least a portion of said r-pyoil into two or more of the locations (i) through (x). 
     
     
         20 . The process of  claim 19 , wherein the pyrolysis facility and the cracker facility are co-located and both the pyrolysis facility and the cracker facility are commercial scale.

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