Modular Pyrolysis Auger with Variable Pitch and Air Restriction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing modular pyrolysis units are inefficient due to reliance on passive feedstock plugs that fail to effectively exclude ambient air and lack mechanisms to remove entrained air, leading to suboptimal pyrolysis reactions and reduced production of high-quality activated carbon.
Innovation Solution
A modular and portable pyrolysis apparatus with a variable number of retorts and a multiple pitch auger with customized flighting, including cut and fold flaps, to ensure consistent feedstock levels and enhanced air exclusion through a specially designed restriction device at the inlet, minimizing the entry of ambient air and optimizing pyrolysis efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a passive feedstock plug is used to exclude ambient air, then the system structure is simple, but air exclusion effectiveness is insufficient
Solution Approach 1:
The system performs preliminary action by removing entrained air from feedstock before it enters the pyrolysis retort. An air removal mechanism is implemented upstream to pre-treat the feedstock, ensuring that air is eliminated before the material reaches the reaction zone. This proactive approach prevents air infiltration issues rather than merely reacting to them.
Solution Approach 2:
The system introduces an intermediary air removal mechanism between the feedstock source and the pyrolysis retort. This intermediate device acts as a mediator that selectively removes air from the feedstock stream while preserving the feedstock material itself, thereby solving the air exclusion problem without requiring complete system redesign.
2Loss of time
If feedstock moves quickly through the pyrolysis unit, then processing time is reduced, but pyrolysis reaction completeness deteriorates
Solution Approach 1:
The system applies dynamics by implementing a variable pitch auger mechanism that adjusts feedstock transport speed along the length of the retort. The pitch varies from section to section, creating different residence times in different zones. This dynamic approach allows rapid initial processing while ensuring adequate reaction time in later stages, optimizing both speed and completeness.
Solution Approach 2:
The system implements local quality by creating different flow conditions in different sections of the pyrolysis unit. The variable pitch auger provides faster movement in early sections and slower movement in later sections, tailoring the transport characteristics to the specific pyrolysis stage requirements of each local zone.
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
The solution enables efficient conversion of carbon-based feedstock to combustible gases and high-quality activated carbon, improving energy production and filtration capabilities while allowing for scalable and adaptable pyrolysis systems to meet varying energy demands.
Implementation Method 1
pyrolysis, the chemical decomposition of organic matter by heating in the absence of oxygen
Implementation Method 2
a multiple pitch auger with customized flighting, including cut and fold flaps, to ensure consistent feedstock levels
Implementation Method 3
enhanced air exclusion through a specially designed restriction device at the inlet, minimizing the entry of ambient air
Data Source
Figure 1
Figure 2A~2F
Figure 2G~2L
AI summary
A pyrolysis apparatus reduces feedstock to gaseous energy sources and recyclable solids by moving feedstock through a processing unit via a feedstock transport mechanism that has sections that move the feedstock at respectively different rates through a retort within the processing unit. The feedstock transport mechanism may be an auger with a variable flighting pitch along its shaft. The pyrolysis apparatus may be modular in that processing units may be added and subtracted as necessary for any given installation. A restriction device squeezes ambient air out of the feedstock prior to entry into the pyrolysis apparatus retort.