Integrated Combustion System Waste Heat Recovery
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Solution Overview
Problem
Conventional combustion devices suffer from high energy waste, incomplete combustion leading to pollution, and high power consumption, with limited efficiency and safety concerns in hydrogen usage, necessitating an integrated system for waste heat recycling and hydrogen-assisted combustion to enhance energy efficiency and reduce environmental impact.
Innovation Solution
An integrated combustion device power saving system that includes a hydrogen generation device, smoke distributing device, hydrogen-generation fuel preheating device, power generating device, and heat recycling device, where waste heat from flue gas is used to generate hydrogen-rich gases for improved combustion efficiency and convert heat into electricity, reducing fuel consumption and pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If waste heat from flue gas is discharged directly without recycling, then the system operation is simple, but energy is wasted and combustion efficiency is low
Solution Approach 1:
The patent merges the waste heat recovery function with the hydrogen generation function into a single integrated system. The flue gas heat exchanger recovers waste heat from exhaust gases and uses it to heat water for hydrogen production, combining energy recovery and chemical production in one system architecture.
Solution Approach 2:
The patent converts harmful waste heat and CO2 emissions into beneficial resources. The heat recycler captures waste heat from flue gas to generate steam for hydrogen production, while the CO2 from hydrogen generation is fed back to the combustion device, transforming environmental hazards into energy resources.
2Productivity
If hydrogen is used as fuel to improve combustion efficiency, then fuel consumption is reduced, but safety risks increase due to hydrogen's explosive properties
Solution Approach 1:
The patent uses water as an intermediary medium to safely handle hydrogen. Hydrogen is generated by heating water in a closed container, and the steam produced is used for combustion. This intermediary approach allows hydrogen utilization while maintaining safety through controlled phase change and pressure management.
Solution Approach 2:
The system maintains safety by controlling the hydrogen generation environment. The closed container and controlled heating process create a safe environment for hydrogen production, preventing accidental ignition while the generated hydrogen is immediately utilized in the combustion process.
3Reliability
If external power grid is used to power combustion device peripheral devices, then operation is reliable, but electricity cost increases
Solution Approach 1:
The system generates its own electricity through a generator driven by the hydrogen combustion process. The combustion device powers the generator, which produces electricity to run peripheral devices like pumps and control systems, making the system self-sufficient and eliminating external power grid dependence.
4Loss of substance
If fuel consumption is reduced to save costs, then operating cost decreases, but combustion completeness may be affected
Solution Approach 1:
The patent changes the chemical composition parameters of the fuel by introducing hydrogen-rich gas into the combustion process. This parameter change improves combustion completeness and reduces harmful emissions while actually reducing overall fuel consumption, as hydrogen has higher combustion efficiency and produces cleaner burning.
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
The system achieves significant fuel savings, improves flue gas quality, prolongs heat recycling device lifespan, and reduces reliance on external power grids by utilizing waste heat for hydrogen production and electricity generation, thereby enhancing combustion efficiency and environmental sustainability.
Implementation Method 1
a hydrogen generation device for generating a hydrogen-rich gas from water or a mixture of hydrocarbon and water through decomposition at a high temperature into oxycarbide and hydrogen
Implementation Method 2
combusion is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant, usually atmospheric oxygen
Implementation Method 3
a heat recycler for recycling waste heat of exhaust flue gas from the combustion device
Implementation Method 4
a power generator for converting waste heat into electricity
Data Source
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AI summary
An integrated combustion device power saving system includes: a hydrogen generation device, for generating a hydrogen-rich gas; a combustion device, for receiving the hydrogen-rich gas for combustion and generating heat energy and flue gas; a smoke distributing device, for distributing flue gas to the hydrogen generation device or atmosphere; a hydrogen-generation feed preheating device, for capturing waste heat of the flue gas from the smoke distributing device to preheat a hydrogen-generation feed to be used in the hydrogen generation device; and a power generating device, for receiving the flue gas from the hydrogen-generation feed preheating device while recycling waste heat of the flue gas to generate power to at least one of the hydrogen generation device or the combustion device.