Ionic Liquid Cooling for Metallurgical Furnace Safety
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Solution Overview
Problem
Cooling elements in metallurgical furnaces using water pose risks of hydrogen explosions and damage to refractory materials due to water leakage and hydration reactions, especially when used in conjunction with MgO-containing materials.
Innovation Solution
Employing an ionic liquid as the cooling medium, which is non-volatile and thermally stable, allowing for efficient heat transfer while preventing water ingress and subsequent hydration reactions, and is used in a closed cooling circuit system with a heat exchanger and circulating pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If water is used as cooling medium in cooling elements, then efficient heat transfer is achieved, but risk of hydrogen explosions and damage to refractory material increases
Solution Approach 1:
The patent changes the chemical composition parameter of the cooling medium from water to ionic liquid, which fundamentally alters the interaction with molten metal and refractory materials while maintaining effective heat transfer capabilities
Solution Approach 2:
The ionic liquid acts as an intermediary cooling medium that transfers heat from the furnace shell to the cooling system without causing harmful reactions, mediating between the hot furnace environment and the cooling mechanism while eliminating hydrogen explosion risks
2Reliability
If water leaks from cooling element, then cooling function is compromised, but catastrophic hydrogen explosions and refractory destruction occur
Solution Approach 1:
The patent converts the potential harm of cooling medium leakage by using an ionic liquid that, even if leaked, does not cause hydrogen explosions or refractory damage like water does. The harmful potential of water leakage is transformed into a safe alternative that maintains cooling reliability
Solution Approach 2:
The ionic liquid creates an inert chemical environment within the cooling element that prevents harmful reactions with molten metal and refractory materials, eliminating the hydrogen explosion risk associated with water while maintaining effective cooling
3Use of energy by moving object
If cooling element temperature is low, then cooling efficiency is high, but hydration reactions of MgO-containing refractory material occur
Solution Approach 1:
The patent changes the chemical properties of the cooling medium from water to ionic liquid, which eliminates the hydration reaction with MgO-containing refractory materials while allowing the cooling element to maintain low temperatures for efficient cooling
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
Eliminates the risk of hydrogen explosions and refractory material damage by maintaining a non-hygroscopic environment and allowing for controlled temperature management during furnace operation, ensuring the structural integrity of the furnace lining and safe operation.
Implementation Method 1
a cooling medium which contains at least one ionic liquid, preferably consists of it, is passed through the cooling element
Implementation Method 2
a cooling circuit system for metallurgical furnaces with at least one cooling element with an inlet and an outlet for a cooling medium, a heat exchanger and a circulating pump
Data Source
Figure 1
AI summary
In a method for cooling a metallurgical furnace having at least one cooling element which is flown through by a cooling mediums, a cooling medium that contains at least one ionic liquid, and preferably consists thereof, is carried through the cooling element, thereby preventing the problems that are associated with water cooling, such as the risk of hydrogen explosions and damage to the furnace lining.