# US 12,767,892 B2 · Method for upgrading liquefied waste plastics > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,767,892 B2 - Document ID: US12767892B2 - Status: Granted - Kind: B2 - Application number: 17/780,703 - Filed: 2020-11-27 - Published: 2023-11-09 - Granted: 2026-10-20 - Earliest claimed: 2019-11-29 - Assignees: Neste Oyj - Applicants: Neste Oyj - Inventors: Jukka-Pekka Pasanen; Ville Paasikallio; Risto Vapola; Antti Ojala - Web page: https://patentgrep.com/patent/US12767892B2 ## CPC - C10G 1/002: {in combination with oil conversion- or refining processes} - C10G 1/10: from rubber or rubber waste - C10G 3/40: {Thermal non-catalytic treatment} - C10G 9/00: Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils - C10B 53/07: {of solid raw materials consisting} of synthetic polymeric materials, e.g. tyres (recovery or working-up of waste materials of organic macromolecular compounds or compositions based thereon by dry-heat treatment for obtaining partially depolymerised materials C08J11/10; production of liquid hydrocarbon mixtures from rubber or rubber waste C10G1/10) - C10G 2300/1003: Waste materials - C10G 2300/202: Heteroatoms content, i.e. S, N, O, P - C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES - C10B: DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B43/295) ## Abstract The present disclosure relates to a method for upgrading liquefied waste plastics, the method including a step (A) of providing liquefied waste plastics (LWP) material, optionally a step (B) of pre-treating at least part of the liquefied waste plastics (LWP) material to produce a pre-treated liquefied waste plastics (LWP) material, a step (C) of blending the liquefied waste plastics (LWP) material and/or the pre-treated liquefied waste plastics (LWP) material with a highly paraffinic material to obtain a cracker feed such that the cracker feed meets the requirements for chlorine content and olefins content of the steam cracker, and a step (D) of steam cracking the cracker feed in a steam cracker to obtain a cracker product. ## Claims ### Claim 1 A method for upgrading liquefied waste plastics, the method comprising: providing a liquefied waste plastics (LWP) material having a chlorine content ranging from 100 ppm by weight (wt.-ppm) to 4000 wt.-ppm and a 5% boiling point of 25° C. or more and a 95% boiling point of 360° C. or less; optionally pre-treating at least part of the LWP material to produce a pre-treated LWP material, wherein no hydrogen is added during the pre-treating; blending the LWP material, the pre-treated LWP material or a combination thereof with a paraffinic material feed stream containing a paraffin content of 60 wt.-% or more, relative to a total weight of the paraffinic material feed stream, to obtain a cracker feed that meets requirements for chlorine content and olefins content of a steam cracker; and steam cracking the cracker feed in the steam cracker to obtain a cracker product. ### Claim 2 (depends on 1) The method according to claim 1, wherein the cracker feed has a chlorine content of 10 ppm wt.-ppm or less. ### Claim 3 (depends on 1) The method according to claim 1, wherein the paraffinic material feed stream contains at least 90 wt.-% of compounds having 5 or more carbon atoms. ### Claim 4 (depends on 1) The method according to claim 1, wherein the cracker feed has an olefins content of 18.0 wt.-% or less. ### Claim 5 (depends on 1) The method according to claim 1, wherein the optional pre-treating comprises: at least one of organic solvent extraction and an extraction with an aqueous medium. ### Claim 6 (depends on 1) The method according to claim 1, wherein the optional pre-treating comprises: at least contacting the LWP material with an aqueous medium, wherein the aqueous medium is an alkaline aqueous medium. ### Claim 7 (depends on 1) The method according to claim 1, wherein the optional pre-treating is carried out at a temperature ranging from 150° C. to 450° C. ### Claim 8 (depends on 1) The method according to claim 1, wherein the provided LWP material is a fraction of liquefied waste plastics. ### Claim 9 (depends on 1) The method according to claim 1, wherein the paraffinic material feed stream is at least one of a naphtha fraction, a middle distillate fraction, a VGO fraction or a LPG fraction. ### Claim 10 (depends on 1) The method according to claim 1, wherein the paraffinic material feed stream has a paraffin content of either 65 wt.-% or more, 70 wt.-% or more, 75 wt.-% or more, 80 wt.-% or more, 85 wt.-% or more, 90 wt.-% or more, 93 wt.-% or more, or 95 wt.-% or more, relative to the total weight of the paraffinic material feed stream. ### Claim 11 (depends on 1) The method according to claim 1, wherein the paraffinic material feed stream has an i-paraffin content of 5 wt.-% or more, 8 wt.-% or more, 10 wt.-% or more, 15 wt.-% or more, 20 wt.-% or more, 25 wt.-% or more, 30 wt.-% or more, 35 wt.-% or more, 40 wt.-% or more, 45 wt.-% or more, or 50 wt.-% or more, relative to a summed amount of n-paraffins and i-paraffins in the paraffinic material feed stream taken as 100 wt.-%. ### Claim 12 (depends on 1) The method according to claim 1, wherein the paraffinic material feed stream has a n-paraffin content in a range from 25 wt.-% to 50 wt.-%, or 30 wt.-% to 45 wt.-%, relative to a summed amount of n-paraffins and i-paraffins in the paraffinic material feed stream taken as 100 wt.-%. ### Claim 13 (depends on 1) The method according to claim 1, wherein the paraffinic material feed stream has a naphthenes content in a range from 0.01 wt.-% to 5.00 wt.-%, relative to the total weight of the paraffinic material feed stream. ### Claim 14 (depends on 1) The method according to claim 1, wherein the paraffinic material feed stream comprises a renewable material. ### Claim 15 (depends on 1) The method of claim 1, wherein the LWP material has a chlorine content ranging from 200 ppm by weight (wt.-ppm) to 4000 wt.-ppm. ### Claim 16 (depends on 1) The method of claim 1, wherein the LWP material, the pre-treated LWP material or the combination thereof does not meet the requirements for chlorine content and/or olefins content of the steam cracker before blending with the paraffinic material feed stream. ### Claim 17 (depends on 1) The method of claim 1, wherein the paraffinic material feed stream has a naphthenes content in a range from 0.01 wt.-% to 15.00 wt.-%. ### Claim 18 (depends on 1) The method of claim 1, wherein the paraffinic material feed stream contains at least 90 wt.-% of compounds having 5 or more carbon atoms. ### Claim 19 A method for upgrading liquefied waste plastics, the method comprising: providing a liquefied waste plastics (LWP) material having a chlorine content ranging from 100 ppm by weight (wt.-ppm) to 4000 wt.-ppm and a first bromine number of the LWP material (BN1); pre-treating at least part of the LWP material to produce a pre-treated LWP material, wherein the pre-treated LWP material has a second bromine number (BN2) that, when divided by BN1, results in a BN2/BN1 ratio of 0.90 or more, and wherein no hydrogen is added during the pre-treating; blending the LWP material, the pre-treated LWP material or a combination thereof with a paraffinic material feed stream containing a paraffin content of 60 wt.-% or more, relative to a total weight of the paraffinic material feed stream, to obtain a cracker feed that meets requirements for chlorine content and olefins content of a steam cracker, wherein the paraffinic material feed stream contains at least 90 wt.-% of compounds having 5 or more carbon atoms; and steam cracking the cracker feed in the steam cracker to obtain a cracker product.