Liquid Seal Bulk Feeder for Lightweight Material Distillation
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Solution Overview
Problem
Existing systems face challenges in reliably feeding low-density bulk materials through a liquid seal in destructive distillation units due to floating issues and irregular feedstock introduction, leading to potential explosions and inefficiencies.
Innovation Solution
A conveyor feeding system with inclined spiral augers submerged in a liquid seal, utilizing a push auger to force feedstock downward and a coordinated inlet valve to regulate the feed rate, ensuring all densities of material are processed effectively and safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gravitational forces are used to move feedstock through the liquid seal, then heavy feedstock can sink through the seal, but lightweight feedstock floats and cannot be reliably fed
Solution Approach 1:
The push auger provides an artificial downward force to counteract the buoyancy force acting on lightweight feedstock materials. By mechanically pushing the material downward, the system overcomes the natural tendency of low-density materials to float on the liquid seal, enabling reliable feeding of both lightweight and heavy feedstock through the same liquid seal mechanism.
2Ease of operation
If a simple continuous feeding mechanism is used, then the system structure is simple, but feedstock introduction is irregular and marginally controlled
Solution Approach 1:
The inlet valve operates periodically, opening and closing in coordination with the rotation of the push auger. This periodic operation allows material to be fed smoothly into the liquid seal reservoir at controlled intervals, preventing irregular lump insertion while maintaining a relatively simple system structure. The coordinated timing ensures that material is introduced only when the push auger is in the appropriate position to convey it through the seal.
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 system reliably and continuously feeds lightweight materials through the liquid seal, preventing backflow and ensuring controlled, efficient processing by overcoming buoyancy issues and regulating the feed rate, thus enhancing safety and operational efficiency.
Implementation Method 1
a pair of inclined spiral augers having their lower ends submerged in oil or other liquid to provide a liquid seal, thereby preventing undesirable back flow of distillation gases through the feeding system
Implementation Method 2
The push auger acts to push lightweight feedstock downward, submerging it through the liquid seal
Data Source
AI summary
A conveyor feeding system for reliably and continuously supplying particulate matter as feedstock, such as rubber tire chips, to a reactor or distillation unit. The feeding system includes a pair of inclined spiral augers having their lower ends submerged in oil or other liquid to provide a liquid seal, thereby preventing undesirable back flow of distillation gases through the feeding system. The push auger acts to push lightweight feedstock downward, submerging it through the liquid seal. The material thereafter is taken up by the partially submerged feed auger, for withdrawal up out of the liquid seal for delivery to further processing, such as a pyrolytic reactor. Buoyant material, which otherwise might float upon the liquid of the seal reservoir, accordingly may be effectively processed through the system. An inlet valve, through which feedstock is introduced into the push auger, can be opened and closed in coordination with the rotation of the push auger, so that material is fed smoothly into the liquid seal reservoir. The inlet valve also may be of a type which prevents back-flow of gas from the push auger to material inlet valve.