Reactor Injector Auto-Push Control for Wear-Compensated Gap Maintenance
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Solution Overview
Problem
Existing auto-push control systems for injectors in reactors face challenges in maintaining a consistent gap between the injector's distal end and the reactor's outer wall, leading to potential damage and wear due to thermal shock, which complicates maintenance and increases operational costs.
Innovation Solution
An auto-push control system equipped with sensors and a controller that calculates and compensates for the insertion length of the injector based on real-time wear measurements, ensuring a consistent gap is maintained between the injector and the reactor's refractory material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the injector is inserted at a constant rate into the reactor, then the injector replacement cycle is extended, but the gap between the distal end of the injector and the outer wall of the reactor cannot be maintained, leading to damage to the distal end of the injector or refractory material
Solution Approach 1:
The patent employs sensors (such as thermocouples or optical sensors) to detect the position of the injector tip relative to the reactor wall in real-time. This detection information is fed back to a control system that automatically adjusts the insertion rate of the injector. When the gap approaches a critical threshold, the system slows down or stops insertion, thereby maintaining the gap within safe limits while maximizing the injector's operational life.
Solution Approach 2:
The insertion rate of the injector is changed from a static constant rate to a dynamic variable rate. The control system continuously adjusts the insertion speed based on real-time feedback from sensors, allowing the system to adapt to wear accumulation and maintain optimal gap distance throughout the injector's operational lifecycle.
2Strength
If the gap between the distal end of the injector and the outer wall of the reactor is made smaller, then wear resistance is improved, but the refractory material on the outer wall may be damaged due to high temperature
Solution Approach 1:
Temperature sensors monitor the thermal conditions near the reactor wall continuously. When the injector tip approaches too close to the wall, the system detects the temperature rise and automatically adjusts the insertion rate to increase the gap, preventing thermal damage to the refractory material while minimizing injector wear.
Solution Approach 2:
The system dynamically changes the gap parameter (distance between injector tip and reactor wall) based on operational conditions. By adjusting this critical parameter in real-time, the system balances wear resistance and thermal protection, allowing the gap to vary within safe limits rather than maintaining a fixed value.
3Manufacturing precision
If real-time detection of injector insertion length is implemented, then gap maintenance is improved, but the system complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The patent uses indirect measurement methods where sensors detect parameters that correlate with injector position rather than measuring position directly. For example, temperature gradients, electrical resistance changes, or optical signal variations serve as intermediaries to infer the gap distance, simplifying the measurement system while maintaining control precision.
Solution Approach 2:
The injector system incorporates self-monitoring capabilities through integrated sensors that detect its own position and condition. The control system uses this self-generated information to automatically adjust insertion rates, eliminating the need for complex external monitoring equipment and reducing overall system complexity.
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
Minimizes deformation and damage to refractory materials, reduces maintenance time, and enhances operational productivity by preventing unnecessary wear and extending the injector's lifespan.
Implementation Method 1
the refractory material of the injector or the outer wall may be deformed and/or damaged by heat
Data Source
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AI summary
The technical idea of the present disclosure provides an auto-push control system comprising: a reactor comprising an outer wall; an injector configured to penetrate the outer wall of the reactor and be inserted into the reactor; a sensor placed in the injector; and a controller configured to control an insertion distance or an insertion rate of the injector into the reactor, wherein the controller is further configured to: calculate a loss length of the injector based on a signal from the sensor; and compensate for the insertion distance of the injector based on an insertion length depending on a preset insertion rate of the injector and the calculated loss length of the injector.