Mixed Ester Production Using Pyrolysis Oil Recycle Content
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Solution Overview
Problem
Current recycling processes for waste materials are economically challenging, require complex segregation, and are sensitive to impurities, making it difficult to produce mixed esters using recycled content without significant investment in new equipment or infrastructure, and there is a lack of flexibility in sourcing raw materials.
Innovation Solution
A method involving the pyrolysis of recycled waste to produce pyrolysis oil and pygas, which are then used to create recycle content alcohol and mixed ester compositions, allowing for the integration of recycled materials into existing production processes without the need for additional equipment and providing flexibility in the amount and timing of recycle content incorporation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methanolysis technologies are used to recycle waste materials, then recycling can be achieved, but high purity stream requirements and detailed segregation increase processing costs
Solution Approach 1:
The patent segments the recycling process into distinct functional units: pyrolysis reactor for waste breakdown, distillation columns for separation, and esterification reactors for product formation. This segmentation allows each unit to handle specific tasks efficiently, eliminating the need for upstream segregation of waste streams while maintaining product purity through controlled separation processes.
Solution Approach 2:
The patent changes the fundamental processing parameters by using pyrolysis temperatures (300-700°C) to break down waste materials into molecular building blocks, then controls esterification reactions at moderate temperatures with catalysts. This parameter transformation converts heterogeneous waste streams into homogeneous intermediate compounds that can be uniformly processed, eliminating purity and segregation requirements.
2Object-affected harmful factors
If waste materials are recycled through conventional processes, then environmental benefits are achieved, but complex segregation and pretreatment requirements increase operational complexity
Solution Approach 1:
The patent extracts the essential molecular components (carbon chains, functional groups) from heterogeneous waste materials through pyrolysis, separating them from contaminants and complex structures. This extraction converts diverse waste inputs into uniform intermediate compounds that feed into standardized esterification processes, eliminating the need for complex segregation infrastructure.
Solution Approach 2:
The patent introduces pyrolysis oil and pygas as intermediary substances that mediate between heterogeneous waste materials and homogeneous ester products. These intermediaries serve as universal feedstocks that can be produced from any organic waste stream, decoupling the complexity of waste input from the requirements of product output.
3Productivity
If dedicated recycling infrastructure is built to produce recycle content feedstocks, then recycling efficiency can be improved, but significant investment in new equipment is required
Solution Approach 1:
The patent designs pyrolysis and esterification units that can process multiple types of organic waste materials (plastics, biomass, oils) through the same chemical pathways. This multi-functionality allows existing chemical processing infrastructure to handle diverse waste streams without dedicated recycling equipment, achieving high recycling efficiency through versatile process design.
Solution Approach 2:
The patent enables waste materials to serve their own purpose as feedstocks for valuable chemical production through self-contained pyrolysis-esterification systems. The process converts waste into its own processing requirements, eliminating the need for separate recycling infrastructure by making waste materials directly compatible with existing ester production equipment.
4Reliability
If recycle content is incorporated into mixed ester production, then sustainable manufacturing is achieved, but flexibility in sourcing raw materials is reduced
Solution Approach 1:
The patent produces mixed esters that are composite chemical products combining recycled carbon content from pyrolysis with fresh catalysts and co-reactants. This composite approach allows flexible sourcing of individual components while maintaining sustainable credentials through the recycled carbon backbone, enabling manufacturers to blend different waste-derived feedstocks with various additives to meet specific performance requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables the efficient and flexible use of recycled materials in producing mixed esters, reducing economic and environmental burdens by integrating recycled content into existing production processes, thereby promoting sustainable manufacturing practices.
Implementation Method 1
pyrolysis of recycled waste to produce pyrolysis oil and pygas
Implementation Method 2
thermally cracking the resulting recycle pyoils
Data Source
AI summary
A mixed ester composition having a recycle content value is obtained by reacting a recycle content feedstock to make a recycle content mixed ester or by deducting from a recycle inventory a recycle content value applied to a mixed ester composition. At least a portion of the recycle content value in the feedstock or in an allotment obtained by a mixed ester manufacturer has its origin in recycled waste and/or pyrolysis of recycled waste and/or in thermal steam cracking of recycle content pyoil.