Flameless Steam Boiler with Indirect Heat Exchange
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Solution Overview
Problem
Conventional steam boilers suffer from incomplete combustion, heat loss, and inefficiency due to direct flame heating, which leads to harmful gas emissions and reduced energy utilization.
Innovation Solution
A steam boiler design featuring a housing with parallel upper and lower chambers, filled with tubes for liquid, and a gas structure with a burner that disperses high-temperature flue gas for efficient heat exchange, eliminating the need for a furnace and reducing fire hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If direct flame heating is used in conventional steam boilers, then heating speed is improved, but combustion completeness deteriorates leading to harmful gas emissions
Solution Approach 1:
The patent introduces a heat exchanger as an intermediary between the burner and water tank. The burner heats the heat exchanger, which then transfers heat to the water indirectly. This mediator allows complete combustion to occur in the burner while preventing direct contact between flames and water, eliminating harmful emissions and enabling efficient heat transfer.
2Power
If direct flame heating is used in conventional steam boilers, then heating capability is improved, but energy efficiency deteriorates due to heat loss
Solution Approach 1:
The heat exchanger serves as an intermediary that captures heat from the burner and efficiently transfers it to the water. This indirect heating system prevents heat loss by ensuring complete heat transfer through the heat exchanger surfaces, while the burner can operate at optimal combustion efficiency.
3Power
If furnace combustion is used in conventional steam boilers, then heating power is improved, but safety deteriorates due to fire hazard from furnace explosion
Solution Approach 1:
The heat exchanger acts as a safety intermediary that separates the combustion chamber from the water tank. This design eliminates the risk of furnace explosions by preventing direct contact between the combustion zone and water, while still enabling high heating power through efficient heat transfer across the heat exchanger surfaces.
4Power
If flame combustion state is not controllable in conventional steam boilers, then combustion intensity is improved, but combustion completeness deteriorates in certain pockets
Solution Approach 1:
The heat exchanger serves as a mediator that allows the burner to operate at high combustion intensity while ensuring complete combustion through proper burner design. The heat exchanger captures all heat from complete combustion and transfers it efficiently to the water, preventing formation of harmful gases from incomplete combustion.
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 configuration ensures complete combustion, reduces NOx generation, enhances heat exchange efficiency, and minimizes safety hazards by allowing full contact of high-temperature flue gas with the tubes, resulting in improved energy use and reduced emissions.
Implementation Method 1
Combustion can be provided through the burner to generate heat
Implementation Method 2
heat exchange with the liquid in the tubes can be achieved
Implementation Method 3
heat exchange with the liquid in the tubes can be achieved
Data Source
AI summary
Embodiments provide a combustion structure that can achieve stable combustion by addressing the aforementioned drawbacks in the prior art such as low flam stability, backfire, deflagration, blockage and/or any other drawbacks. The combustion chamber structure in accordance with the disclosure can include: a grate structure including a first set of elongated components, a fire retention structure including a second set of elongated components. The first set of first elongated components can be arranged along an axial direction within the combustion chamber structure. The second set of elongated components can be arranged along the axial direction in a same direction as the first elongated components. The second set of elongated components can be configured to generate a negative pressure zone within the combustion chamber. The first set of elongated components can form apertures that can be aligned with apertures formed by the second set of elongated components.