Fuel Fired Reactor Burner Segmentation for Downtime Reduction
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Solution Overview
Problem
Current fuel-fired reactor operations lead to unnecessary shutdowns due to strict regulatory parameters, resulting in energy loss, production downtime, and increased costs, as the system must shut down completely when safety parameters are violated, even if conditions can be quickly restored.
Innovation Solution
Implementing a secondary, more stringent operating range for shutdown criteria allows the main burner to be shut down before critical limits are reached, while a pilot burner continues to operate, maintaining reactor temperature and conditions, enabling quick restarts without purging and using the same fuel for both burners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main burner is shut down when safety parameters are violated according to strict regulatory criteria, then safety is improved, but production downtime and energy loss increase
Solution Approach 1:
The burner system is segmented into a main burner and a pilot burner. The main burner can be shut down independently when parameters approach critical limits, while the pilot burner continues to operate to maintain reactor temperature. This segmentation allows partial operation rather than complete shutdown, resolving the contradiction between safety and productivity.
Solution Approach 2:
The pilot burner serves as a preliminary action that maintains reactor conditions before a complete shutdown is necessary. By keeping the pilot burner running, the reactor temperature is maintained in advance, so when the main burner is shut down for safety reasons, no reheating is needed and production can resume quickly.
2Reliability
If the reactor is purged and reheated after shutdown, then safety is ensured, but energy loss and time consumption increase
Solution Approach 1:
The pilot burner performs preliminary action by maintaining reactor temperature during and after main burner shutdown. This prevents the need for subsequent reheating operations, eliminating energy loss and time consumption associated with cooling and reheating cycles.
Solution Approach 2:
The pilot burner ensures continuity of useful thermal action in the reactor. Even when the main burner is shut down, the pilot burner continues to provide heat, maintaining the reactor in a ready state and eliminating the interruption in thermal processing that would otherwise require energy-intensive reheating.
3Reliability
If a secondary more stringent operating range is implemented, then the main burner shutdown criteria are improved, but system complexity increases
Solution Approach 1:
The operating range is segmented into a primary operating range for normal operation and a secondary more stringent range for approaching critical conditions. This segmentation creates clear, manageable zones with distinct control strategies, making the complex shutdown criteria easier to implement and monitor.
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 approach minimizes reactor downtime, reduces energy losses, and lowers production costs by allowing continuous operation within a narrower but safer parameter range, facilitating easier adjustments and reducing the need for reheating and separate fuel infrastructure.
Implementation Method 1
Fuel is introduced into the reactor and burned therein by means of at least one main burner
Data Source
AI summary
A process for operating a fuel fired reactor includes introducing fuel into the reactor and burning the fuel in the reactor by means of at least one main burner. Relevant parameters of the process are monitored. Within a predetermined critical operating range for an enforced shut down, a secondary, more stringent operating range is implemented as shut down criteria. The main burner is shut down upon one or more of the relevant parameters leaving the secondary operating range while at least one pilot burner continues to operate as long as the relevant parameters are maintained within the critical operating range.