Integration of polymeric waste co-processing in cokers to produce circular chemical products from coker gas
Systems and methods are provided for integration of polymeric waste co-processing in cokers to produce circular chemical products from coker gas, including a method of producing circular chemical products comprising: providing a coker gas that is at least partially derived from polymeric waste, wherein the coker gas has an olefin content of about 10 wt % to about 30 wt %, a sulfur content of about 0.5 wt % to about 5 wt %, and a total halide content of about 1 wppm to about 150 wppm; and oxygen-containing compounds in an amount of about 0.5 wt % to about 15 wt %; and converting the coker gas into at least a polymer.
1. A method of producing circular chemical products comprising:
providing a coker gas that is at least partially derived from polymeric waste, wherein the coker gas has an olefin content of about 10 wt % to about 30 wt %, a sulfur content of about 0.5 wt % to about 5 wt %, and a total halide content of about 1 wppm to about 150 wppm; and oxygen-containing compounds in an amount of about 0.5 wt % to about 15 wt %; and
converting the coker gas into at least a polymer.
2. The method of claim 1 , wherein the coker gas is derived from co-processing of polymeric waste and a heavy oil with a T10 distillation point of about 343° C. to about 575° C.
3. The method of claim 1 , wherein providing the coker gas comprises: coking a feedstock comprising the polymeric waste and a heavy oil with a T10 distillation point of about 343° C. to about 575° C. to form at least a coker effluent and coke; and separating the coker gas from the coker effluent.
4. The method of claim 3 , wherein the polymeric waste comprises plastic waste.
5. The method of claim 3 , wherein the heavy oil comprises petroleum vacuum resid.
6. The method of claim 3 , wherein the feedstock comprises the polymeric waste in an amount of about 0.1 wt % to about 25 wt %.
7. The method of claim 3 , wherein the coking comprises exposing the feedstock to delayed coking conditions.
8. The method of claim 1 , wherein providing the coker gas comprises pyrolyzing the polymeric waste to produce at least a pyrolysis oil and then coking at least the pyrolysis oil and a heavy oil with a T10 distillation point of about 343° C. to about 575° C.
9. The method of claim 1 , wherein the coker gas comprises oxygen-containing compounds in an amount of about 1 wppm to about 15 wt %, and nitrogen-containing compounds in an amount of about 250 wppm to about 5,000 wppm.
10. The method of claim 1 , wherein the polymeric waste comprises plastic waste.
11. The method of claim 1 , wherein at least a portion of the polymer is attributable to polymers in the polymeric waste.
12. The method of claim 1 , wherein the polymer comprises a circular polymer.
13. The method of claim 1 , wherein the polymer is certified circular in accordance with International Sustainability and Carbon Certification.
14. The method of claim 1 , wherein the coker gas is further converted into at least one chemical product selected from a C 6 -C 16 olefin, an oxo-alcohol, a plasticizer, and combinations thereof.
15. The method of claim 1 , further comprising treating the coker gas to reduce a concentration of one or more contaminants prior to the step of converting the coker gas.
16. The method of claim 15 , wherein the treating comprises contacting the coker gas with water in a water wash.
17. The method of claim 1 , wherein the converting the coker gas into at least the polymer comprises recovering olefins from the coker gas; and polymerizing at least a portion of the olefins.
18. The method of claim 1 , wherein the converting the coker gas into at least the polymer comprises steam cracking at least a portion of the coker gas to form at least a steam cracking effluent, recovering olefins from the steam cracking effluent; and polymerizing at least a portion of the olefins.
19. The method of claim 18 , wherein the providing the coker gas comprises providing a gas fraction comprising at least 50 wt % of C 2 hydrocarbons, C 3 hydrocarbons, C 4 hydrocarbons, or combinations thereof.
20. The method of claim 1 , wherein the providing the coker gas comprises providing a C 3 -C 4 fraction, and wherein the method further comprises separating at least a C 3 fraction from the C 2 -C 4 gas fraction, recovering olefins from the C 3 fraction, and polymerizing at least a portion of the olefins.
21. The method of claim 1 , wherein the providing the coker gas comprises providing a C 3 -C 4 fraction, and wherein the method further comprises separating at least a C 3 fraction from the C 3 -C 4 fraction, oligomerizing at least a portion of the C 3 fraction to form oligomers of propylene, and reacting at least a portion of the oligomers with hydrogen and carbon monoxide to form at least aldehydes.
22. A method of producing circular chemical products comprising:
providing a coker gas that is at least partially derived from polymeric waste, wherein the coker gas has an olefin content of about 10 wt % to about 30 wt %, a sulfur content of about 0.5 wt % to about 5 wt %, and a total halide content of about 1 wppm to about 150 wppm; and oxygen-containing compounds in an amount of about 0.5 wt % to about 15 wt %;
recovering olefins from the coker gas; and
polymerizing at least a portion of the olefins to form at least polyolefins.
23. The method of claim 22 , further comprising steam cracking the coker gas, wherein the olefins are recovered from a steam cracking effluent of the coker gas.
24. The method of claim 22 , wherein recovering olefins from the coker gas comprises separating at least propylene from C 3 -C 4 hydrocarbons.
25. The method of claim 22 , further comprising coking a feedstock comprising the polymeric waste and a heavy oil with a T10 distillation point of about 343° C. to about 575° C. to form at least a coker effluent and coke; and separating the coker gas from the coker effluent.