System for boiler control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current boiler control systems operate inefficiently due to conservative margins to avoid carbon monoxide violations, leading to reduced efficiency and operational constraints.
Innovation Solution
A system that includes a carbon monoxide sensor and a control unit to issue main and pulse servo commands to adjust combustion material supply units, dynamically controlling combustion based on sensed CO levels, allowing for more precise air-fuel ratio management and reducing CO emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conservative margins are built into boiler systems to avoid carbon monoxide violations, then safety and emission compliance are improved, but efficiency deteriorates
Solution Approach 1:
The system continuously monitors exhaust CO levels and uses this feedback to dynamically adjust the air-fuel ratio. The controller receives real-time CO measurements and modifies combustion parameters accordingly, replacing static conservative margins with dynamic feedback-based control that maintains safety while optimizing efficiency.
Solution Approach 2:
The system transitions from static conservative operating margins to dynamic control that continuously adapts to actual combustion conditions. By making the air-fuel ratio adjustable in real-time based on CO measurements, the system can optimize efficiency while maintaining safety compliance.
2Device complexity
If CO is not measured and conservative margins are used, then system complexity is reduced, but efficiency deteriorates further
Solution Approach 1:
The system uses the existing CO sensor primarily for safety monitoring and leverages this measurement for dual-purpose efficiency optimization. By making the control system self-adjusting based on its own CO measurements, it eliminates the need for separate efficiency optimization systems.
3Stability of the object's composition
If baseline amounts of combustion materials are provided for baseline amounts of time, then operational stability is improved, but adaptability deteriorates
Solution Approach 1:
The system maintains baseline combustion parameters for stability but introduces periodic pulse servo commands that temporarily adjust the air-fuel ratio. These periodic disturbances allow the system to probe and adapt to changing conditions while returning to baseline operation, combining stability with adaptability.
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 enhances boiler efficiency by dynamically adjusting combustion parameters, minimizing CO emissions and operational constraints, thereby improving overall performance.
Implementation Method 1
a carbon monoxide (CO) sensor disposed at an outlet of the vessel to sense a quantity of exhaust CO output from the vessel as a product of combustion therein
Implementation Method 2
supply units to provide supplies of combustion materials for combustion thereof, a vessel coupled to the supply units in which the combustion materials are combusted
Data Source
AI summary
A system for boiler control is provided. The system includes supply units to provide supplies of combustion materials for combustion thereof, a vessel coupled to the supply units in which the combustion materials are combusted, a carbon monoxide (CO) sensor disposed at an outlet of the vessel to sense a quantity of exhaust CO output from the vessel as a product of combustion therein and a control unit. The control unit is coupled to the supply units and the sensor and configured to issue a main servo command and a pulse servo command to one or more of the supply units to control operations of the one or more supply units in accordance with the sensed quantity of the exhaust CO.