Hydrogen Boiler via Coal Gasification and Water Decomposition
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Solution Overview
Problem
Traditional coal-fired steam boilers suffer from low heat efficiency, significant pollution, high operational costs, and labor-intensive processes due to direct coal burning and static gasifiers, with existing hydrogen boiler designs facing issues like inadequate energy efficiency, complex operation, and incomplete pollution removal.
Innovation Solution
A hydrogen boiler system utilizing coal gasification and water decomposition with a dual-furnace design, multistage reactors, and a circulatory system for steam and gas exchange, incorporating a calandria reflux heater and CO2 remover, which promotes efficient gasification, reduces labor intensity, and achieves complete pollution interception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If coal is directly burned in coal-fired boilers, then the boiler can operate continuously, but the heat efficiency is low and pollution is serious
Solution Approach 1:
The patent replaces the traditional mechanical combustion system with a chemical gasification system. Coal is converted to coal gas through gasification reactions, which then undergoes catalytic modification to produce hydrogen-rich gas. This chemical substitution process achieves complete combustion and eliminates incomplete combustion products, thereby improving heat efficiency and reducing pollution simultaneously.
Solution Approach 2:
The patent changes the physical and chemical parameters of the fuel processing system. By controlling temperature, pressure, and catalyst conditions in the gasification and modification processes, the system transforms coal into high-quality hydrogen gas. This parameter optimization ensures complete conversion and combustion, resolving the contradiction between energy efficiency and pollution emission.
2Productivity
If a static gasifier is adopted for coal gasification, then gas can be generated, but labor intensity is strong and operation is difficult
Solution Approach 1:
The patent introduces a fluidized bed gasification system that dynamically suspends coal particles in an upward-flowing gas stream. This dynamic state prevents coal softening and sludge formation, eliminates the need for manual feeding and slag removal, and enables continuous automatic operation. The system transforms the static gasification process into a dynamic fluidized state, dramatically reducing labor intensity while maintaining high gas generation capability.
3Reliability
If high temperature and high pressure steam is used to blow sludge in static gasifier, then gasification can proceed, but equipment cost increases
Solution Approach 1:
The patent replaces the mechanical steam blowing system with a fluidized bed gasification system. The upward-flowing gas stream naturally suspends and fluidizes coal particles, eliminating the need for high-pressure steam injection. This substitution maintains gasification process stability through dynamic particle suspension while avoiding the complex and expensive high-pressure steam generation equipment.
4Quantity of substance
If coal gasified to coal gas and then modified and purified into hydrogen is transmitted for use, then hydrogen can be produced, but the method lacks social and economical reasonability
Solution Approach 1:
The patent merges the steam boiler and hydrogen production system into a single integrated unit. The steam generated in the boiler directly serves as the modifying agent in the catalytic modification process, creating a self-sufficient hydrogen generation system. This integration eliminates the need for separate hydrogen production and transmission infrastructure, making the system economically viable for direct on-site hydrogen supply.
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 high thermal efficiency, low cost, and zero pollution by utilizing waste heat for coal gasification, reducing labor requirements, and ensuring efficient hydrogen generation with a self-sustaining circulatory system for steam and gas modification.
Implementation Method 1
a calandria reflux heater using inner thermal dissipation is provided at a lower part of an interior of the coal modification and gasification device and is formed by a part of a pipeline for introducing a heat source from fire tail and tail gas discharged from the upper and lower furnaces of the steam boiler
Implementation Method 2
a burner is provided at a lower part of the lower furnace and is configured to convert infrared ray, water gas and the steam to hydrogen through reactions of mixing, modification and decomposition
Implementation Method 3
a steam distributor is provided at a side of the burner
Implementation Method 4
a CO2 remover is provided at an outer side of the lower furnace of the steam boiler
Implementation Method 5
after several stages of modification and decomposition, the steam and the gasified gas of coal are completely converted to hydrogen
Implementation Method 6
decomposition reactions in the reactors
Data Source
AI summary
The invention provides a hydrogen boiler based on coal gasification and water decomposition, including a steam boiler which includes an upper furnace and a lower furnace; water and steam in the upper furnace are respectively communicated with water and steam in the lower furnace; and the steam boiler is provided with a casing which has a narrow gap for containing water and a wide wall for heating to generate gas. The steam boiler contains multistage reactors. A coal modification and gasification device is provided at an outer side of the steam boiler and is provided with two chambers. The steam and gasified gas of coal are mixed and enter the reactors for direct burning to promote respective reactions. After several stages of modification and decomposition, the steam and the gasified gas of coal are completely converted to hydrogen.