Fluidization Apparatus Batch Drying for Consistent Moisture
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Solution Overview
Problem
Existing fluidization apparatuses for treating batches of materials with moisture content face challenges in achieving consistent residual moisture content due to variations in drying gas moisture content, leading to inconsistent treatment results and increased costs from in-line moisture sensors.
Innovation Solution
A method and apparatus that determine the material end temperature as the sum of the individual material minimum temperature and a fixed increase temperature, eliminating the need for additional sensors, using a control device to adjust the treatment process based on a reference measurement or database.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If in-line moisture sensors are used to monitor residual moisture content, then measurement precision is improved, but device complexity and costs increase
Solution Approach 1:
The patent replaces complex mechanical/electronic moisture sensors with a thermal field-based measurement approach. By monitoring material temperature changes during drying and using heat transfer principles to calculate residual moisture content, the system eliminates the need for expensive in-line moisture sensors while maintaining measurement capability.
Solution Approach 2:
The patent introduces material temperature as an intermediary parameter to indirectly determine residual moisture content. Instead of directly measuring moisture, the system measures temperature changes during drying and uses these as a proxy to infer moisture levels, simplifying the measurement system.
2Adaptability or versatility
If drying gas moisture content varies, then adaptability to different conditions is improved, but manufacturing precision of residual moisture content deteriorates
Solution Approach 1:
The patent implements a feedback mechanism by continuously monitoring material temperature during drying and using this information to track drying progress. The system adjusts drying parameters based on real-time temperature data, ensuring consistent residual moisture content even when drying gas moisture content varies between batches.
Solution Approach 2:
The patent performs preliminary determination of the drying curve and residual moisture temperature relationship before actual drying. By establishing reference data in advance through drying experiments, the system creates a basis for controlling subsequent drying processes to achieve consistent results despite variations in drying conditions.
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
Ensures consistent residual moisture content across multiple batches, reducing costs and avoiding microbiological contamination or processing issues by maintaining uniform treatment conditions.
Implementation Method 1
at least part of a liquid in the material of the batch that has been introduced into the fluidization chamber, which constitutes the moisture content in the material, is evaporated by heat being supplied by means of the drying gas
Implementation Method 2
heat being supplied by means of the drying gas
Implementation Method 3
the material of the batch cools down from an initial material temperature to a material minimum temperature as a result of the associated removal of evaporation heat
Implementation Method 4
liquid is further evaporated by the heat supplied by means of the drying gas, such that the material of the batch heats up to a material end temperature
Implementation Method 5
a drying gas which fluidizes the material in the fluidization chamber
Data Source
AI summary
A method and a fluidization apparatus unit for treating a large number of batches of a material having a moisture content and having a material temperature. The fluidization apparatus unit includes a fluidization apparatus. The fluidization apparatus has a fluidization chamber which has a material inlet and a material outlet, and also includes a fluid inlet and a fluid outlet for a drying gas which fluidizes the material in the fluidization chamber and which has a drying gas moisture content.