Pyrolysis System with Sequestration-Enabled Carbon for Stable Gas
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Solution Overview
Problem
Existing pyrolysis systems face challenges in achieving consistency and efficiency in processing a wide range of fuels, particularly municipal solid waste and coal, due to limitations in heat transfer, plugging issues, and low-grade combustible gas production with harmful impurities, which necessitates improved methods for purifying and sequestering noxious materials.
Innovation Solution
The system employs feedback loop-controlled pyrolysis with high-temperature chemical sequestration and chemisorption processes using sequestration-enabled Carbon compounds to produce stable methane and clean gas products, incorporating multiple heating chambers with adjustable temperatures and dwell times, and utilizes non-wetting Carbon for enhanced heat transfer and catalyst mingling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-temperature pyrolysis is used to produce combustible gas, then energy output is improved, but harmful impurities such as Mercury and Sulfur are generated
Solution Approach 1:
The patent applies this principle by using the harmful impurities (Mercury and Sulfur) generated during high-temperature pyrolysis as feedstock for a second low-temperature pyrolysis process. The impurities are reprocessed to produce additional combustible gas, thereby converting the harmful byproducts into useful energy output.
Solution Approach 2:
The patent discards the harmful impurities from the first pyrolysis process and recovers them by feeding them into a second pyrolysis unit. This allows the system to recover energy from what would otherwise be waste materials, improving overall energy efficiency while reducing environmental contamination.
2Productivity
If pyrolysis agent is passed through fluidized bed of solid, then pyrolysis efficiency is improved, but fuel must be highly-granular and reactive which limits application
Solution Approach 1:
The patent employs two different pyrolysis systems (high-temperature and low-temperature) that can process different types of feedstock. The high-temperature system handles materials suitable for rapid pyrolysis, while the low-temperature system processes a broader range of materials including those that are not highly-granular or reactive, thereby achieving universality across feedstock types.
Solution Approach 2:
The patent segments the pyrolysis process into two distinct stages: a first high-temperature pyrolysis unit for efficient processing of suitable materials, and a second low-temperature pyrolysis unit for processing a wider variety of feedstocks including the impurities from the first stage. This segmentation allows each unit to be optimized for its specific function while collectively achieving broad feedstock adaptability.
3Productivity
If pyrolysis agent is passed through solid bed of fuel, then pyrolysis efficiency is improved, but fuel must have high mechanical strength and non-caking properties
Solution Approach 1:
The patent uses two pyrolysis systems with different operational characteristics. The low-temperature pyrolysis unit can process feedstocks with varying mechanical properties including those that would cake or degrade in a solid bed, thereby expanding the range of acceptable fuel types while maintaining overall system productivity.
4Power
If combustible gas is produced with harmful impurities, then energy production is improved, but environmental contamination occurs
Solution Approach 1:
The patent converts the harmful impurities into beneficial energy by feeding them into a second pyrolysis unit. This transforms environmental contaminants into useful combustible gas, simultaneously improving energy production and reducing environmental contamination.
Solution Approach 2:
The system discards harmful impurities from the first pyrolysis stage and recovers them through second-stage pyrolysis. This recovery process converts what would be environmental pollutants into energy resources, eliminating contamination while maintaining energy production.
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 approach results in a stable and predictable gas product with high methane content, effective removal of noxious compounds, and reduced environmental contamination, while also producing a non-wetting Carbon for use in composite lumber and energy storage applications.
Implementation Method 1
pyrolizing at least one of a coal, biomass, animal waste, or municipal solid waste stream to produce a gas product that may include methane and a solid product that may include Carbon
Implementation Method 2
feedback loop-controlled pyrolysis with high-temperature chemical sequestration and chemisorption processes using sequestration-enabled Carbon compounds
Data Source
AI summary
A process and system for the controlled thermal conversion of a carbonaceous feedstock, including: exposing the feedstock to one or more predetermined temperatures and one or more predetermined pressures for one or more predetermined amounts of time in one or more chambers to produce a gas product and a solid product, wherein the gas product includes one or more of methane, carbon monoxide, hydrogen, and one or more noxious chemicals and the solid product includes Carbon; sequestration enabling at least a portion of the Carbon by creating associated Lewis Acid Sites; sequestering at least one of the one or more noxious chemicals in the one or more chambers using the sequestration enabled Carbon; and controlling the constituents of the gas product using feedback, thereby providing a predictable and stable gas product from an unknown and/or variable feedstock.