# US 2014/0155662 A1 · Thermal de-polymerization process of plastic waste materials > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155662 A1 - Document ID: US20140155662A1 - Status: Published application - Kind: A1 - Application number: 14/234,381 - Filed: 2012-07-23 - Published: 2014-06-05 - Earliest claimed: 2011-07-22 - Inventors: Shamsul Bahar bin Mohd Nor - Web page: https://patentgrep.com/patent/US20140155662A1 ## CPC - C10G 1/10: from rubber or rubber waste - C08J 11/12: by dry-heat treatment only - C08J 11/14: by treatment with steam or water - C10L 1/04: essentially based on blends of hydrocarbons - C10G 2300/1003: Waste materials - C10G 2300/201: Impurities - C10G 2300/202: Heteroatoms content, i.e. S, N, O, P - C10G 2300/307: Cetane number, cetane index - C10G 2300/4006: Temperature - C10G 2300/4012: Pressure - C10G 2400/04: Diesel oil - Y02W 30/62: Plastics recycling; Rubber recycling - 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 - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT ## Abstract The present invention relates to a process for producing liquid transportation fuel (15) based on plastic waste materials (10), comprising the step of: providing (S101) plastic waste materials (10) in molten form; de-polymerizing (S103) molten plastic waste materials (10) into a reaction chamber using a limestone catalyst (20) at a temperature ranging 420° C. to 450° C. under normal atmospheric pressure condition of 1 Bar; and introducing (S106) gaseous de-polymerized products (25) to a distillation unit thereby allows the gaseous de-polymerized products (25) to be fractionally distilled and condensed into liquid transportation fuels (15). ## Claims ### Claim 1 A process for producing liquid transportation fuel (15) based on plastic waste materials (10) comprising the steps of: providing waste plastic materials (10) in molten form; de-polymerizing the molten plastic waste materials (10) into a reaction chamber using a limestone catalyst (20) at a temperature of lower than 460° C. under normal atmospheric pressure condition of 1 Bar; and introducing gaseous de-polymerized products (25) into a distillation unit thereby allows the de-polymerized products (25) to be fractionally distilled and condensed into liquid transportation fuels (15). ### Claim 2 (depends on 1) A process for producing liquid, transportation. fuel (15) based on plastic waste materials (10) as claimed in claim 1, wherein said limestone catalyst (20) is resulted from sintering a solid composition comprising aluminum oxide (Al2O3), calcium oxide (CaO), silicone oxide (SiO) and magnesium oxide (MgO). ### Claim 3 (depends on 1) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 1, wherein said solid composition preferably comprising aluminium (Al2O3) ranging from 39% to 41%; calcium oxide (CaO) ranging from 30% to 32%; silicone oxide (SiO) ranging from 0.09% to 0.12%; and magnesium oxide ranging from 0.01% to 0.03%. ### Claim 4 (depends on 2) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 2, wherein said solid composition, more preferably, comprising 40.6%±0.1 aluminum oxide (Al2O3); 31.7%±0.1 calcium oxide (CaO); 0.15%±0.01 silicone oxide (SiO); and 0.03±0.01 magnesium oxide (MgO). ### Claim 5 (depends on 2) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 2, wherein said solid composition has been pulverized prior to the sintering step. ### Claim 6 (depends on 1) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 1, wherein step of providing molten plastic waste materials (10) comprising the steps of: eliminating water content enclosed in solid plastic wastes (10); shredding the dried solid plastic wastes (10) into pieces; and heating the dried and shredded solid plastic wastes (10) at a temperature of below 250° C. in a heated chamber. ### Claim 7 (depends on 1) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 1, wherein said step of de-polymerizing of molten plastic waste materials (10) is preferably conducted at a temperature ranging from 420° C. to 450° C. under normal atmospheric pressure condition of 1 Bar. ### Claim 8 (depends on 1) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 1, wherein further comprising the steps of fracturing the gaseous de-polymerized products (25) at a temperature ranging from 420° C. to 450° C. under normal atmospheric pressure condition of 1 Bar prior to being subjected to the distillation unit. ### Claim 9 (depends on 1) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 1, wherein further comprising the step of eliminating aerosols and particles carried by the de-polymerized gaseous products (25) before the distillation step. ### Claim 10 (depends on 8) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 8, wherein the undesirable substances of the de-polymerized gaseous products (25) can be eliminated by means of guiding the de-polymerized gaseous products (25) into a pressure secure container through a high speed cyclone. ### Claim 11 (depends on 1) A process for producing liquid transportation fuel (15) based on plastic waste materials (10) as claimed in claim 1, wherein said liquid transportation fuel (15) characterized in that having a cetane number of above 55 and sulfur PPM of between 0 and 50.