Remote Injection Unit for Metallurgical Furnace Additive Safety
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Solution Overview
Problem
Existing methods for adjusting furnace processes in metallurgical furnaces with limited furnace shells pose safety risks due to the need for operators to be close to the furnace when adding additives, as they require manual intervention.
Innovation Solution
A remotely operable injection unit with linearly movable devices and mounting means allows for the safe injection of additives like coke, pulverized coal, concentrate mixture, silica, and limestone into the furnace space without the operator needing to be near the furnace shell, utilizing a process control system for remote operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual intervention is used to add additives to the furnace, then the operator can directly control the addition process, but the operator must be close to the furnace shell which creates safety risks
Solution Approach 1:
An automated injection device is introduced as an intermediary between the operator and the furnace. The device includes an injection unit with a movable injection element that can be remotely controlled to add additives to the furnace charge, eliminating the need for the operator to be physically close to the furnace shell while maintaining control over the addition process.
Solution Approach 2:
The manual mechanical operation of adding additives is replaced with an automated injection system. The injection device uses a drive mechanism to move the injection element into the furnace charge and deliver additives through an injection nozzle, substituting the operator's direct mechanical intervention with an automated mechanical system that can be controlled from a safe distance.
2Object-affected harmful factors
If the furnace shell is sealed to protect the operator, then safety is improved, but the ability to manually add additives is reduced
Solution Approach 1:
The injection device incorporates a movable injection element that can dynamically extend into the furnace charge and retract. The drive mechanism allows the injection element to move between a retracted position (when not in use) and an extended position (when adding additives), enabling the furnace shell to remain sealed for operator safety while still allowing additive addition when needed.
Solution Approach 2:
The injection device is designed to automatically perform the additive addition function without requiring manual intervention. The system can be controlled through automated means or remote operation, allowing the furnace maintenance system to serve itself by adding additives without operator involvement, thus maintaining both safety and operational capability.
3Object-affected harmful factors
If remote operation is implemented to improve safety, then operator safety is enhanced, but direct monitoring and control capability is reduced
Solution Approach 1:
The system incorporates feedback mechanisms that provide information about the furnace charge condition and injection process to the operator or control system. This feedback loop enables remote monitoring and control, allowing the operator to observe the process outcomes and make adjustments without being physically present near the furnace, thus maintaining both safety and information flow.
Data Source
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AI summary
Provided are a method and an arrangement for adjusting characteristics of a furnace process in a furnace space limited by a furnace shell of a metallurgical furnace. The arrangement comprises an injection unit having a frame mounted by means of a mounting means on the metallurgical furnace outside the furnace space of the furnace shell. Also provided is an injection unit for use in the method and in the arrangement.