Deconsolidation Device Flow Path Geometry for Coal Pulverization
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Solution Overview
Problem
In coal gasification processes, the mechanical efficiency of dry coal pumping is hindered by the need for additional pulverization machines like breaker mills to deconsolidate the coal after it passes through a particulate material extrusion pump, which increases complexity and energy consumption.
Innovation Solution
A deconsolidation device with a unique flow path design that changes the cross-sectional shape from a rectilinear inlet to a round outlet, allowing for a 90-degree or greater turning angle, ensuring the coal particles are broken down into a fine powder without re-compaction, eliminating the need for external pulverization machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a particulate material extrusion pump is used to pump pulverized carbon-based fuel, then the mechanical efficiency of dry coal gasification is improved, but the coal becomes consolidated and requires additional pulverization machines to deconsolidate
Solution Approach 1:
The deconsolidation device combines the pulverization function with the existing extrusion pump system by integrating a flow path with a turning angle of at least 90 degrees. This merging eliminates the need for separate breaker mills or ball end mills, reducing device complexity while maintaining the coal processing capability.
Solution Approach 2:
The invention introduces a geometric dimension solution by designing a flow path with a specific turning angle of at least 90 degrees. This dimensional change in the flow path geometry creates the necessary shear forces to deconsolidate coal particles without requiring additional pulverization equipment, thus resolving the contradiction between productivity improvement and device complexity.
2Reliability
If additional pulverization machines are used to deconsolidate coal, then the consolidated coal is broken down, but energy consumption increases
Solution Approach 1:
The invention replaces the mechanical pulverization system (breaker mills, ball end mills) with a geometric flow path design. The turning angle of at least 90 degrees in the flow path creates fluid dynamic effects that deconsolidate coal particles, substituting complex mechanical systems with a simpler geometric solution that consumes less energy.
Solution Approach 2:
The invention changes the flow path geometry parameter (turning angle of at least 90 degrees) to achieve coal deconsolidation. By modifying this geometric parameter, the system achieves effective coal breakdown without the energy-intensive operation of traditional pulverization machines.
3Reliability
If the flow path has a turning angle of at least 90 degrees, then coal particles are effectively broken down, but the device structure becomes more complex
Solution Approach 1:
The invention uses a curved flow path with a turning angle of at least 90 degrees instead of straight-line geometry. This curvature creates the necessary flow dynamics to break down coal particles while maintaining a relatively simple device structure, as the curved path is integrated into the existing pump housing rather than requiring separate components.
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 deconsolidation device effectively breaks down consolidated coal into a fine powder, allowing it to flow freely at its natural angle of repose, enhancing mechanical efficiency and streamlining the coal gasification process by eliminating the requirement for additional pulverization equipment.
Implementation Method 1
The flow path 36 between the inlet 32 and the outlet 34 forces pulverized coal particles to move in relation to each other without re-compaction
Data Source
AI summary
A deconsolidation device defines a flow path with an inlet which defines a first cross-section generally equivalent to a passageway cross-section of a particulate material extrusion pump and an outlet that defines a second cross-section different than the first cross-section.