# US 12,600,914 B2 · Method of treating waste plastic > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,600,914 B2 - Document ID: US12600914B2 - Status: Granted - Kind: B2 - Application number: 18/580,240 - Filed: 2022-07-18 - Published: 2024-09-19 - Granted: 2026-04-14 - Earliest claimed: 2021-07-19 - Assignees: Neste Oyj - Applicants: Neste Oyj - Inventors: Mika P. Kettunen; Eija Koivusalmi; Ville Paasikallio; Pekka Aalto - Web page: https://patentgrep.com/patent/US12600914B2 ## CPC - C10G 1/10: from rubber or rubber waste - C10G 65/12: including cracking steps and other hydrotreatment steps - C10G 3/50: {in the presence of hydrogen, hydrogen donors or hydrogen generating compounds} - C10G 9/36: with heated gases or vapours - C10G 45/08: in combination with chromium, molybdenum, or tungsten metals, or compounds thereof - C10G 45/58: to change the structural skeleton of some of the hydrocarbon content without cracking the other hydrocarbons present, e.g. lowering pour point; Selective hydrocracking of normal paraffins (C10G32/00 takes precedence; improving or increasing the octane number or aromatic content of naphtha C10G35/00) - C10G 47/10: with catalysts deposited on a carrier - C10G 2300/1003: Waste materials - C10G 2300/1074: Vacuum distillates - C10G 2300/202: Heteroatoms content, i.e. S, N, O, P - C10G 2300/4006: Temperature - C10G 2300/4012: Pressure - C10G 2300/4018: Spatial velocity, e.g. LHSV, WHSV - C10G 2300/70: Catalyst aspects - 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 ## Abstract A method of upgrading liquefied waste plastic (LWP) to a mixture of purified hydrocarbons is hereby provided. The method includes the steps of providing a feed including liquefied waste plastic (LWP) and a vacuum gas oil (VGO) stream and/or a heavy gas oil (HGO) stream to form a mixed stream, subjecting the mixed stream to hydrotreatment for removal of impurities and to produce a hydrotreated stream, subjecting the hydrotreated stream to hydrocracking to produce a hydrocracked stream including a mixture of purified hydrocarbons and fractionating the hydrocracked stream. ## Claims ### Claim 1 A method of upgrading liquefied waste plastic (LWP) to a mixture of purified hydrocarbons, the method comprising: providing a feed containing liquefied waste plastic (LWP), and containing a vacuum gas oil (VGO) stream and/or a heavy gas oil (HGO) stream to form a mixed stream; subjecting said mixed stream to hydrotreatment for removal of impurities and to produce a hydrotreated stream; subjecting the hydrotreated stream to hydrocracking to produce a hydrocracked stream containing a mixture of purified hydrocarbons; and fractionating the hydrocracked stream containing a mixture of purified hydrocarbons. ### Claim 2 (depends on 1) The method according to claim 1, wherein the mixed stream comprises: 1 to 40 wt. % LWP, 5 to 30 wt. % LWP, or 5 to 25 wt. % LWP based on a total of the mixed stream, and a balance of the stream being VGO and/or HGO. ### Claim 3 (depends on 1) The method according to claim 1, wherein the LWP is produced as pyrolyzed waste plastic. ### Claim 4 (depends on 3) The method according to claim 3, wherein the pyrolyzed waste plastic is fractionated to one or more LWP fractions, and at least one of the LWP fractions is in the feed to be hydrotreated. ### Claim 5 (depends on 1) The method according to claim 1, wherein the LWP is subjected to pre-treatment before the hydrotreatment. ### Claim 6 (depends on 1) The method according to claim 1, wherein the hydrotreatment comprises: use of at least one guard bed before hydrotreating the mixed stream. ### Claim 7 (depends on 1) The method according to claim 1, wherein the hydrotreatment and hydrocracking are performed in one unit, arranged in one vessel having a hydrotreatment section followed by a hydrocracking section. ### Claim 8 (depends on 1) The method according to claim 1, wherein the hydrotreatment is performed in a presence of a catalyst selected from sulfided NiMo, CoMo and a combination thereof, on alumina (Al2O3) support. ### Claim 9 (depends on 1) The method according to claim 1, wherein the hydrotreatment is performed under conditions that include: a temperature of 250-450° C., 330-420° C., or 390-410° C.; a pressure of 30-250 bar, 130-180 bar, or 145-155 bar; a hydrogen to oil volume ratio of 500-2000 L:L, about 900-1300 L:L, or about 1000-1200 L:L; and a hydrocarbon liquid hourly space velocity (LHSV) of about 0.2 to 10.0 L/h, 1.5 to 2.7 L/h, and/or 1.8-2.5 L/h. ### Claim 10 (depends on 1) The method according to claim 1, wherein the hydrocracking is performed in a presence of a bifunctional catalyst comprising: an acidic support and an active hydrogenation component, the acidic support being alumina, amorphous silica-alumina or a zeolite, and the active hydrogenation component being NiMo, NiW, Pd or Pt. ### Claim 11 (depends on 1) The method according to claim 1, wherein the hydrocracking is performed under conditions which include: a temperature of 250-450° C., 370-420° C., or 390-410° C.; a pressure of 50-250 bar, 140-160 bar, or 145-155 bar; a hydrogen to oil volume ratio of 500-2000 L:L, about 900-1300 L:L, or 1000-1200 L:L; and a hydrocarbon liquid hourly space velocity (LHSV) of about 0.5 to 5.0 L/h, 1.0 to 2.5 L/h, or 1.4 to 1.9 L/h. ### Claim 12 (depends on 1) The method according to claim 1, wherein the fractionating of the hydrocracked stream comprises: performing a mixture of purified hydrocarbons such that at least two fractions are formed as a lighter and as a heavier fraction. ### Claim 13 (depends on 1) The method according to claim 1, comprising: performing the fractionating such that at least three fractions are formed, of which a first heavier fraction is a fraction with components having a 5 wt. % distillation point of >380° C. and a second heavier fraction is a fraction with components having a 5 to 95 wt. % distillation range from 330 to 410° C., and a third fraction has a 95 wt. % distillation point of <370° C. ### Claim 14 (depends on 1) The method according to claim 1, comprising: hydroisomerisation of the produced mixture of purified hydrocarbons either before the step of fractionating the produced mixture of purified hydrocarbons or after the step of fractionating the produced mixture of purified hydrocarbons.