Induction Heating Coil for Oily Solid Thermal Desorption
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Solution Overview
Problem
Existing thermal desorption technologies for treating oily solid materials face issues such as uneven heating, energy waste, and open flame restrictions due to the use of natural gas/oil burning fire heating methods, which result in low heat transfer efficiency and inability to accurately control temperature.
Innovation Solution
A system utilizing a vertical furnace with an electromagnetic induction heating coil assembly, where the heating power of coil units can be independently controlled, and a method that adjusts heating power based on the filling rate of the material to prevent deformation and reduce energy consumption, incorporating a thermal desorption module, vapor treatment module, and incondensable gas treatment module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If natural gas/oil burning fire heating is used, then heating capability is achieved, but heat transfer efficiency is low and temperature control is inaccurate
Solution Approach 1:
The patent replaces the mechanical combustion heating system with an electromagnetic induction heating system. The induction heating coil generates an electromagnetic field that directly induces eddy currents in the conductive furnace body, converting electromagnetic energy directly into heat within the furnace structure itself, eliminating the need for external fuel combustion and improving both energy efficiency and temperature control precision
Solution Approach 2:
The electromagnetic induction heating system operates through periodic alternating current in the heating coil, creating a time-varying electromagnetic field that continuously induces eddy currents in the furnace body. This periodic action enables precise control of heating intensity and temperature through frequency and amplitude modulation of the input power
2Stability of the object's composition
If uniform heating is implemented, then temperature distribution is improved, but energy consumption increases
Solution Approach 1:
The patent divides the heating coil into multiple independent sections along the furnace height, each capable of being controlled separately. This allows different regions of the furnace to receive different heating intensities based on local requirements, such as applying more heat to sections with higher material density or greater thermal losses, thereby achieving uniform temperature distribution without wasting energy on already-warm sections
Solution Approach 2:
The heating system dynamically adjusts the power distribution to each coil section based on real-time temperature feedback from sensors positioned at different heights. The control system continuously monitors temperature uniformity and modulates the heating intensity in each section accordingly, transitioning the system from static uniform heating to dynamic adaptive heating that maintains temperature uniformity while minimizing energy consumption
3Reliability
If electromagnetic induction heating is used, then safety and adaptability are improved, but heating uniformity may be compromised
Solution Approach 1:
The furnace body is designed with varying electromagnetic properties in different regions, and the heating coil is segmented to match these local characteristics. Sections of the coil are independently controlled to compensate for variations in material composition, density, or thermal conductivity at different heights, ensuring uniform heating despite local differences in the processed material
Solution Approach 2:
Temperature sensors are positioned at multiple heights within the furnace to monitor the thermal state in real-time. The control system uses this feedback information to dynamically adjust the power supplied to each section of the induction heating coil, correcting any temperature deviations and maintaining uniform heating conditions throughout the furnace volume
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 solution effectively addresses uneven heating and energy waste by ensuring uniform temperature control and reducing deformation risks, while allowing for efficient treatment of oily solid materials without open flame restrictions, thereby improving the treatment process and energy efficiency.
Implementation Method 1
an electromagnetic induction heating coil assembly... The electromagnetic induction heating coil assembly includes a plurality of coil units sequentially arranged at an outer side of the sidewall of the vertical furnace body
Implementation Method 2
Thermal desorption technology can be divided into direct heating technology and indirect heating technology... uses the high temperature generated by external heat source to heat a chamber, and transfers the heat energy to solid waste to evaporate volatile substances contained in the solid waste
Data Source
AI summary
Embodiments of the present disclosure provide a system for treating oily solid material and a method for treating oily solid material. The system for treating oily solid material includes a thermal desorption module, a thermal desorption vapor treatment module and an incondensable gas treatment module. The thermal desorption module includes a vertical furnace body, a stirring shaft and an electromagnetic induction heating coil assembly. The electromagnetic induction heating coil assembly includes a plurality of coil units sequentially arranged at an outer side of the sidewall of the vertical furnace body along the height direction (Y). A heating power of each of the plurality of coil units is configured to be independently controlled.