C10J3/66

Compositions and methods of using fine mineral matter as a catalyst for chemical recycling
11691873 · 2023-07-04 · ·

The presently disclosed embodiments relate to the utilization of coal-derived fine mineral matter in chemical recycling of plastics or of solid mixed plastic waste. The instantly disclosed mineral based catalyst benefits the processes of catalytic cracking, gasification and steam reforming to maximize carbon utilization and production of plastics of original quality from recycled or renewable feedstocks while reducing the plastic pollution in the environment. The catalyst can be based on inorganic fine mineral matter, a natural ancient mineral mixture found in coal deposits and containing a plurality of transition metals, such as iron, copper, and manganese, as well as calcium, barium, magnesium, potassium, sodium, which can act as co-catalysts. Addition of the catalyst can convert plastic to syngas at a faction of the energy of conventional technologies.

Char preparation system and gasifier for all-steam gasification with carbon capture

An ASG system for polygeneration with CC includes a devolatilizer that pyrolyzes solid fuel to produce char and gases. A burner adds exothermic heat by high-pressure sub-stoichiometric combustion, a mixing pot causes turbulent flow of the gases to heat received solid fuel, and a riser micronizes resulting friable char. A devolatilizer cyclone separates the micronized char by weight providing micronized char, steam and gases to a gasifier feed and oversized char to the mixing pot. An indirect fluid bed gasifier combustion loop includes a gasifier coupled to the gasifier feed, a steam input to provide oxygen for gasification and to facilitate sand-char separation, and an output for providing syngas. A burner provides POC to a mixing pot which provides hot sand with POC to a POC cyclone via a riser, where the POC cyclone separates sand and POC by weight and provides POC and sand for steam-carbon reaction.

CHEMICAL RECYCLING OF PROCESSED MIXED PLASTIC WASTE 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 PROCESSED MIXED PLASTIC WASTE 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.

TREATMENT OF LIGHT PYROLYSIS PRODUCTS BY PARTIAL OXIDATION GASIFICATION

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves pyrolyzing one or more waste plastics into various pyrolysis products, including pyrolysis gas, and then subjecting the pyrolysis gas to partial oxidation (POX) gasification to thereby form a syngas composition.

CHEMICAL RECYCLING OF PLASTIC-DERIVED STREAMS TO A CRACKER SEPARATION ZONE WITH ENHANCED ENERGY EFFICIENCY

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves integrating a pyrolysis facility with a cracker facility by introducing at least a stream of r-pyrolysis gas into the cracker facility, in the cracker facility, the r-pyrolysis gas may be separated to form one or more recycle content products, and can enhance the operation of the facility.

CHEMICAL RECYCLING OF PLASTIC-DERIVED STREAMS TO A CRACKER SEPARATION ZONE WITH ENHANCED ENERGY EFFICIENCY

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves integrating a pyrolysis facility with a cracker facility by introducing at least a stream of r-pyrolysis gas into the cracker facility, in the cracker facility, the r-pyrolysis gas may be separated to form one or more recycle content products, and can enhance the operation of the facility.

CHEMICAL RECYCLING OF PLASTIC-DERIVED STREAMS TO A CRACKER SEPARATION ZONE WITH ENHANCED SEPARATION EFFICIENCY

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves integrating a pyrolysis facility with a cracker facility by introducing at least a stream of r-pyrolysis gas into the cracker facility. In the cracker facility, the r-pyrolysis gas may be separated to form one or more recycle content products, and can enhance the operation of the facility.

TREATMENT OF HEAVY PYROLYSIS PRODUCTS BY PARTIAL OXIDATION GASIFICATION

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves pyrolyzing one or more waste plastics into various pyrolysis products, including a carbon solids-containing pyrolysis residue, and then subjecting the pyrolysis residue to partial oxidation gasification to thereby form a syngas composition.

TREATMENT OF HEAVY PYROLYSIS PRODUCTS BY PARTIAL OXIDATION GASIFICATION

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves pyrolyzing one or more waste plastics into various pyrolysis products, including a carbon solids-containing pyrolysis residue, and then subjecting the pyrolysis residue to partial oxidation gasification to thereby form a syngas composition.