Patent classifications
C10B53/07
CIRCULAR ECONOMY FOR PLASTIC WASTE TO POLYETHYLENE AND CHEMICALS VIA REFINERY CRUDE UNIT
Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization or for normal alpha olefins. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and then passing the waste plastics through a pyrolysis reactor to thermally crack at least a portion of the polyolefin waste and produce a pyrolyzed effluent. The pyrolyzed effluent is separated into offgas, a naphtha/diesel fraction, a heavy fraction, and char. The naphtha/diesel fraction is passed to a crude unit in a refinery from which is recovered a straight run naphtha fraction (C.sub.5-C.sub.8) or a propane/butane (C.sub.3-C.sub.4) fraction. The straight run naphtha fraction, or propane and butane (C.sub.3-C.sub.4) fraction, is passed to a steam cracker for ethylene production. The ethylene is converted to normal alpha olefin and/or polyethylene. Also, a heavy fraction from the pyrolysis reactor can be combined with a heavy fraction of normal alpha olefin stream recovered from the steam cracker. The combined heavy fraction and heavy fraction of normal alpha olefin stream can be passed to a wax hydrogenation zone to produce wax.
CHEMICAL RECYCLING OF SOLVOLYSIS GLYCOL COLUMN BOTTOMS COPRODUCT STREAMS
Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.
CHEMICAL RECYCLING OF SOLVOLYSIS GLYCOL COLUMN BOTTOMS COPRODUCT STREAMS
Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.
System and method for converting plastic into diesel
Described is a system for producing primarily diesel with some heavy fuel oil from plastic feedstock. The feedstock is received into a pyrolizer. There are two zones in the pyrolizer—one where the temperature is elevated during conveyance, and a second where the temperature is maintained. A distillation vessel receives fuel oils from the pyrolizer and agitates the oils at high temperature. A hydrogenation vessel then mixes the fuel liquid with H2 at a high pressure while recirculating to and from an expansion vessel to create converted fuel oil. A diesel distillation tank receives the converted fuel oil and creates diesel gas, which is then condensed to form a usable diesel product. Any remaining fuel oil is sent the heavy fuel oil tank.
System and method for converting plastic into diesel
Described is a system for producing primarily diesel with some heavy fuel oil from plastic feedstock. The feedstock is received into a pyrolizer. There are two zones in the pyrolizer—one where the temperature is elevated during conveyance, and a second where the temperature is maintained. A distillation vessel receives fuel oils from the pyrolizer and agitates the oils at high temperature. A hydrogenation vessel then mixes the fuel liquid with H2 at a high pressure while recirculating to and from an expansion vessel to create converted fuel oil. A diesel distillation tank receives the converted fuel oil and creates diesel gas, which is then condensed to form a usable diesel product. Any remaining fuel oil is sent the heavy fuel oil tank.
Multistage thermolysis method for safe and efficient conversion of carpet/rug, polymeric materials and other waste sources
Clean, safe and efficient methods, systems, and processes for utilizing thermolysis methods to processes to convert various carpet, rug, polymeric materials and other waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like into a Clean Fuel Gas and Char source are disclosed. The invention processes the carpet, rug, polymeric material to effectively shred and/or grind the waste source, such as post-consumer carpet remnants and waste, and then process using thermolysis methods to destroy and/or separate halogen and other dangerous components to provide a Clean Fuel Gas and Char source. Additional waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like, are suitable for the processing of the invention disclosed.
Multistage thermolysis method for safe and efficient conversion of carpet/rug, polymeric materials and other waste sources
Clean, safe and efficient methods, systems, and processes for utilizing thermolysis methods to processes to convert various carpet, rug, polymeric materials and other waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like into a Clean Fuel Gas and Char source are disclosed. The invention processes the carpet, rug, polymeric material to effectively shred and/or grind the waste source, such as post-consumer carpet remnants and waste, and then process using thermolysis methods to destroy and/or separate halogen and other dangerous components to provide a Clean Fuel Gas and Char source. Additional waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like, are suitable for the processing of the invention disclosed.
Apparatus and Method for Refining Waste Plastic Pyrolysis Oil Using a Separator
Provided are an apparatus and a method for refining pyrolysis oil in which a dechlorination reaction is performed under a first hydrotreating catalyst. Hydrogen chloride as a by-product is removed, and then a denitrification reaction is performed under a second hydrotreating catalyst, thereby preventing production of an ammonium salt (NH.sub.4Cl), and providing refined oil. It is excellent in prevention of corrosion of a reactor, improvement of durability, occurrence of differential pressure, process efficiency, has very low contents of impurities such as chlorine, nitrogen, and metal and olefin, and has excellent quality.
Disposal of refuse
Existing approaches to refuse handling are all based on historical approaches which rely on a network of refuse collection vehicles collecting waste from individual households and delivering this to a centralised landfill or MBI location. This is highly undesirable and wasteful. An alternative process is disclosed, relying on the thermal treatment of waste and like products produced or brought in to the residential property and processed within the domestic curtilage to produce fuel or other forms of energy. Thus, domestic waste will be thermally treated at the home instead of being collected by local authorities and disposed of. The waste input put material will be loaded into a domestically engineered thermal conversion unit either directly or after a pre-process such as shredding. The feedstock will be converted into fuels by a thermal treatment, such as pyrolysis. The resultant output of oil and gas can either be stored or fed into a boiler unit to be used as a fuel to produce hot water, or used to run an electricity generating unit to power the dwelling in question or for supply to a feed-in tariff. Thus, a domestic dwelling includes a thermal treatment unit for processing waste produced in the dwelling, an output of the thermal treatment unit being combusted for producing an energy output for the dwelling. A suitable pyrolysis chamber is disclosed.
Disposal of refuse
Existing approaches to refuse handling are all based on historical approaches which rely on a network of refuse collection vehicles collecting waste from individual households and delivering this to a centralised landfill or MBI location. This is highly undesirable and wasteful. An alternative process is disclosed, relying on the thermal treatment of waste and like products produced or brought in to the residential property and processed within the domestic curtilage to produce fuel or other forms of energy. Thus, domestic waste will be thermally treated at the home instead of being collected by local authorities and disposed of. The waste input put material will be loaded into a domestically engineered thermal conversion unit either directly or after a pre-process such as shredding. The feedstock will be converted into fuels by a thermal treatment, such as pyrolysis. The resultant output of oil and gas can either be stored or fed into a boiler unit to be used as a fuel to produce hot water, or used to run an electricity generating unit to power the dwelling in question or for supply to a feed-in tariff. Thus, a domestic dwelling includes a thermal treatment unit for processing waste produced in the dwelling, an output of the thermal treatment unit being combusted for producing an energy output for the dwelling. A suitable pyrolysis chamber is disclosed.