Hydrothermal Oxidation Device Preheating Coil Thermal Control
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Solution Overview
Problem
Current hydrothermal oxidation technologies face challenges in efficiently treating organic matter with low calorific value due to insufficient thermal effects and preheating, leading to lower destruction yields and issues with thermal control and mechanical management of solids.
Innovation Solution
The hydrothermal oxidation device incorporates a preheating coil, a hot loop radiator, a reaction antechamber, electric heating means, and a solids management module with a magnetic drive to ensure efficient thermal control, preheating, and mechanical treatment of solids, allowing for continuous and effective oxidation of organic matter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hydrothermal oxidation is used for low calorific value waste, then destruction yield is improved (close to 99%), but thermal control is insufficient and preheating is inadequate
Solution Approach 1:
The patent implements a preheating coil that preheats the feedstock before it enters the reaction zone. This preliminary thermal action ensures that the material reaches optimal temperature for oxidation, improving both thermal control and destruction yield for low calorific value waste without causing uncontrolled thermal effects.
Solution Approach 2:
The reactor design creates distinct thermal zones: a preheating zone with the coil, a reaction zone with controlled temperature, and a cooling zone. Each zone has specific thermal characteristics optimized for its function, allowing precise thermal control at different locations within the system while maintaining high destruction yield.
2Temperature
If reaction temperature is controlled by dilution for high calorific value waste, then thermal effects are managed, but volume of aqueous effluents increases
Solution Approach 1:
The patent extracts the preheating function into a separate coil system that operates independently from the main reaction zone. This allows temperature control to be achieved through heat exchange rather than dilution, managing thermal effects for high calorific value waste without adding excess water that would increase effluent volume.
Solution Approach 2:
The preheating coil acts as an intermediary thermal management system. Instead of directly controlling reaction temperature through dilution (adding water), the coil provides indirect thermal control through heat exchange, achieving temperature management without increasing the volume of aqueous effluents.
3Use of energy by moving object
If no preheating is provided for low PCI waste, then thermal effects are minimal, but destruction efficiency decreases
Solution Approach 1:
The preheating coil provides preliminary thermal action to low PCI (calorific value) waste before it enters the reaction zone. This ensures sufficient thermal energy is available to initiate and sustain the oxidation reaction, improving destruction efficiency without creating excessive thermal effects that would require additional cooling or dilution.
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
This configuration achieves high destruction yields of over 99.9% for organic matter, effectively manages thermal and mechanical aspects, and ensures the resistance of equipment materials to supercritical conditions, preventing clogging and corrosion.
Implementation Method 1
a preheating coil arranged along the internal wall of the body main and extending from its first cold end to its second hot end
Implementation Method 2
the water and oxidant mixture traversing the annular zone from the first cold end to the second hot end of the internal tube
Implementation Method 3
a heat exchanger forming a hot loop radiator arranged in the annular zone and in a peripheral zone located on the side of the second hot end of the internal tube, the radiator hot loop taking heat from the hydrothermal oxidation reaction
Implementation Method 4
a refrigeration means for cooling the treated material in the inner reaction zone of the inner tube before it is discharged
Implementation Method 5
cooling the treated material in the inner reaction zone
Implementation Method 6
hydrothermal oxidation of organic matter
Implementation Method 7
treatment of a material in a supercritical medium
Data Source
Figure 1~2
AI summary
A hydrothermal oxidation device for treating a material in a supercritical medium, comprises: a main body (2); an inner tube (8) placed inside the main body (2) so as to form an annular area (10) along the main body; a stirring means (14) placed in the inner area (12) of the inner tube and actuated by means of a rotating shaft; a cooling means (18) for cooling the treated material located in the inner area (12) of the inner tube (8); an inlet (32) for a mixture of water and oxidant; an outlet for effluents; and an inlet (16) for material to be treated, located at one end of the main body, said inlet opening into the inner tube (8). The oxidation device further comprises an inlet (26) for a diluted effluent, located in the flange (4) and connected to a preheating coil (28) arranged along the inner wall of the main body and extending from the first end thereof to the second end thereof, the preheating coil (28) opening into the inner tube (8).