Loop-Type Flash Dryer Gas Acceleration for Capacity With Less Heat
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing loop-type flash dryers face challenges in maintaining treatment capacity while avoiding excessive heat application, leading to issues such as reduced productivity and potential damage to the treated objects.
Innovation Solution
A loop-type flash drying apparatus with a configuration that includes a loop-type drying pipe, feeding, blowing, and discharge ports, and a first blowing port to accelerate gas flow in the discharge region, allowing for efficient drying without excessive heat application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the temperature of the drying gas is reduced to minimize heat influence on the object, then the harmful effect of excessive heat is suppressed, but the treatment capacity is reduced
Solution Approach 1:
The drying process is segmented into multiple zones along the drying pipe: a first drying zone with higher temperature for rapid moisture removal, and a second drying zone with lower temperature for gentle finishing. This spatial segmentation allows simultaneous achievement of high treatment capacity and minimal heat damage by matching temperature conditions to different drying stages.
Solution Approach 2:
Different temperature conditions are applied to different locations within the drying system. The upstream portion receives high-temperature gas for intensive drying, while the downstream portion receives lower-temperature gas to prevent heat damage. This local differentiation of thermal conditions resolves the contradiction between drying efficiency and heat protection.
2Object-affected harmful factors
If the gas flow rate is reduced to minimize heat application, then the object is protected from excessive heat, but the treatment capacity is reduced
Solution Approach 1:
The gas flow system is segmented into multiple streams with different flow rates and temperatures. A high-flow-rate stream provides intensive drying capacity, while a low-flow-rate stream provides gentle heat application. These segmented streams are combined to achieve both high productivity and heat protection simultaneously.
3Object-affected harmful factors
If multiple loop-type flash dryers are connected in tandem to protect objects from heat damage, then the object is protected from deterioration, but the productivity is reduced due to lower treatment capacity per dryer
Solution Approach 1:
Instead of using multiple separate dryers in tandem, the single dryer is segmented into multiple drying zones with different temperature conditions. This internal segmentation achieves the protective effect of multiple dryers while maintaining the high treatment capacity of a single large-capacity unit, thereby resolving the contradiction between heat protection and productivity.
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 apparatus effectively dries objects without reducing treatment capacity and minimizes heat-induced damage, ensuring high productivity and quality of the dried particles.
Implementation Method 1
a flash dryer is provided with a temperature-holding unit to control heat to be applied to an object to be treated
Implementation Method 2
The flash dryer is configured to dry an object to be treated by bringing a gas serving as a heat medium and the object into contact with each other. Accordingly, excessive heat is transferred to the object
Implementation Method 3
a first blowing port through which a gas for accelerating a gas flowing in the discharge region is linearly blown toward the discharge region
Data Source
AI summary
A loop-type flash drying apparatus configured to dry an object to be treated with a gas by supplying the object into a gas stream circulating in a loop-type drying pipe, wherein the loop-type flash drying apparatus includes: (i) a loop-type drying pipe; (ii) a feeding port configured to feed an object to be treated into the drying pipe; (iii) a second blowing port configured to blow a gas into the drying pipe; (iv) a discharge port configured to discharge the object from the drying pipe; (v) a discharge region formed by the drying pipe and the discharge port; and (vi) a first blowing port through which a gas for accelerating a gas flowing in the discharge region is linearly blown toward the discharge region.