Tank-Type Cooling Structure for Ultrafine Powder Particle Uniformity
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Solution Overview
Problem
Existing methods for preparing ultrafine powder particles by evaporation and condensation face challenges in achieving uniform particle size, stable morphology, and good dispersion due to uneven temperature distributions and non-uniform flow states, resulting in a large number of ultra-small and ultra-large particles that affect subsequent powder use.
Innovation Solution
An ultrafine powder particle aggregation and cooling tank-type structure is introduced, comprising an air outlet and backflow structure, a waste backflow structure, a particle forming control structure, and a tank-type variable-direction material distributing structure. This system controls temperature, velocity, and flow connections to stabilize particle formation, ensuring uniform particle size and morphology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If flaring structure or blowing cooling structure is used to cool vapor rapidly, then cooling speed is improved, but temperature uniformity deteriorates causing non-uniform particle size
Solution Approach 1:
The cooling process is divided into multiple stages: rapid cooling zone followed by uniform cooling zone. The segmentation of cooling zones allows different cooling rates at different positions, achieving both fast cooling and temperature uniformity.
Solution Approach 2:
Different regions of the cooling structure provide different cooling characteristics. The rapid cooling structure is positioned where fast cooling is needed, while uniform cooling structures are positioned where temperature consistency is required, creating local quality optimization.
2Productivity
If air blowing is used to cool vapor, then cooling efficiency is improved, but flow uniformity deteriorates causing ultra-small and ultra-large particles
Solution Approach 1:
A guide wall is introduced as an intermediary structure between the air blowing system and the vapor flow. The guide wall mediates the interaction by directing and smoothing the airflow, maintaining cooling efficiency while preventing flow non-uniformity that would cause particle size variations.
Solution Approach 2:
The airflow parameters (velocity, direction, distribution) are carefully controlled and adjusted through the guide wall structure to maintain optimal cooling efficiency while ensuring uniform flow distribution throughout the cooling 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 system achieves stable and controllable conditions for ultrafine powder particle formation, resulting in particles with uniform size, stable morphology, and good dispersion, effectively addressing the issues of ultra-small and ultra-large particles.
Implementation Method 1
the substance to be prepared is firstly heated and gasified at high temperature
Implementation Method 2
heated and gasified at high temperature, and then formed post-solidification from a gaseous state
Implementation Method 3
formed post-solidification from a gaseous state and liquid state
Implementation Method 4
circulating cooling system for providing cooling
Implementation Method 5
air source or circulating air system for providing a current carrying and cooling
Data Source
AI summary
An ultrafine powder particle aggregation and cooling tank-type structure and an ultrafine powder particle forming method is provided. The tank-type structure is arranged in an ultrafine powder particle preparation system, and includes an air outlet and backflow structure, a particle forming control structure, and a tank-type variable-direction material distributing structure which are connected in sequence; a front end of the air outlet and backflow structure is connected to a front high-temperature evaporator, and a rear end of the tank-type variable-direction material distributing structure is connected to a rear collector and a cooling structure.