Lignocellulosic Conversion via Atmospheric Thermal Processing
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Solution Overview
Problem
Current methods for converting lignocellulosic materials into volatile organic liquids face challenges such as high pressure requirements, large processing facilities, low energy yields, chemical instability, and water scarcity, making it difficult to produce renewable fuels compatible with existing internal combustion engines.
Innovation Solution
A method involving the formation of a mixture of particulate lignocellulosic material with a catalyst composition containing a polar organic liquid and acid, heated under controlled conditions to convert the solid phase to char, while separating volatile organic compounds and the catalyst as a gaseous phase, without the need for high pressure processing and minimal water usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional thermochemical processing methods are used to convert lignocellulosic materials into volatile organic liquids, then renewable liquid fuels can be produced, but high pressure processing is required necessitating very large processing facilities
Solution Approach 1:
The invention changes the pressure parameter from high pressure to atmospheric pressure operation. The process is conducted at atmospheric pressure, eliminating the need for high pressure processing facilities while still producing volatile organic liquids compatible with existing internal combustion engines. This parameter change directly reduces facility size and complexity.
Solution Approach 2:
The invention replaces mechanical high pressure processing systems with a thermal processing system operating at atmospheric pressure. By using thermal energy to facilitate the conversion of lignocellulosic materials into volatile organic compounds at atmospheric pressure, the need for complex mechanical pressure processing equipment is eliminated.
2Adaptability or versatility
If conventional thermochemical processing methods are used to convert lignocellulosic materials into volatile organic liquids, then renewable liquid fuels can be produced, but large volumes of fresh water are required
Solution Approach 1:
The invention extracts and eliminates the need for large volumes of fresh water from the processing system. By using atmospheric pressure thermal conversion, the process minimizes water requirements while still producing the necessary volatile organic liquids for fuel production, thereby reducing water consumption significantly.
3Adaptability or versatility
If conventional thermochemical processing methods are used to convert lignocellulosic materials into volatile organic liquids, then renewable liquid fuels can be produced, but low net yields of energy are achieved
Solution Approach 1:
The invention changes the operating parameters to atmospheric pressure and optimized temperature conditions that maximize energy yield. By operating at atmospheric pressure with controlled thermal energy input, the process achieves higher net energy yields compared to conventional high pressure methods, while still producing fuels compatible with existing engines.
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 efficiently converts lignocellulosic materials into volatile organic compounds and char, producing energy-dense liquids that can be used as fuels or further processed into chemicals, reducing greenhouse gas emissions and utilizing abundant renewable resources effectively.
Implementation Method 1
heating the mixture to a temperature sufficiently high and for a period sufficiently long as to convert a major portion of any remaining solid phase of the mixture to char
Implementation Method 2
separating the volatile organic compounds and the catalyst composition as a gaseous phase from the solid phase
Data Source
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AI summary
A method of converting particulate lignocellulosic material to produce volatile organic compounds and char, comprising, forming a mixture of the particulate lignocellulosic material with a catalyst composition containing polar organic liquid and an acid in the presence or absence of added water, heating the mixture to a temperature sufficiently high and for a period sufficiently long as to convert a major portion of any remaining solid phase of the mixture to char whilst agitating the mixture, and separating volatile organic compounds and the catalyst composition as a gaseous phase from the solid phase.