Water Gas Generation System Combustion Gas Heat Recovery
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Solution Overview
Problem
Conventional carbonizing and pyrolytic furnaces face issues such as polymer hydrocarbon coagulation, fire damage due to insufficient carbide cooling, and reduced carbonization efficiency, leading to defects and low water gas yield in biomass-based energy systems.
Innovation Solution
A water gas generation system incorporating a carbonizing furnace with controlled air supply and carbide discharge mechanisms, and a pyrolytic furnace with sealant structures to prevent gas outflow and enhance pyrolysis reaction efficiency, utilizing combustion gas as a heat source without a dedicated steam generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a dedicated steam generator is used to provide superheated steam to the pyrolytic furnace, then the gasification reaction efficiency is improved, but the system complexity and cost increase
Solution Approach 1:
The patent combines the steam generation function with the existing combustion gas flow path. The combustion gas from the carbonizing furnace is redirected to pass through the water gas generation furnace, where it serves dual purposes: providing heat for the pyrolysis reaction and generating superheated steam in-situ. This eliminates the need for a separate dedicated steam generator while maintaining the required gasification reaction efficiency.
Solution Approach 2:
The combustion gas flow path is designed to perform multiple functions: it provides heating for the carbonizing furnace, generates superheated steam for the water gas generation furnace, and maintains the thermal balance of the overall system. This multi-functional use of the combustion gas eliminates redundant equipment and simplifies the system architecture.
2Manufacturing precision
If the pyrolytic furnace operates at high temperature to enhance pyrolysis reaction, then the water gas quality is improved, but the risk of gas outflow and fire damage increases
Solution Approach 1:
The patent incorporates sealant structures at the interface between the water gas generation furnace and the combustion gas flow path before high-temperature operation begins. These sealants are positioned in advance to prevent gas outflow and potential fire hazards, ensuring system safety is established before the high-temperature pyrolysis process starts.
Solution Approach 2:
The design includes protective sealing measures that are built into the furnace structure beforehand to cushion against the potential harmful effects of gas leakage. The sealant structures act as a preventive barrier that mitigates the risk of fire damage and gas outflow before they can occur during high-temperature operation.
3Productivity
If air supply is increased to improve combustion efficiency in the carbonizing furnace, then the carbonization rate is improved, but the temperature control becomes difficult and polymer hydrocarbon coagulation increases
Solution Approach 1:
The patent implements a control mechanism that monitors the combustion process and adjusts the air supply accordingly. By using feedback control, the system can maintain optimal combustion conditions without excessive air supply, preventing both temperature失控 and polymer hydrocarbon coagulation while still achieving high carbonization rates.
Solution Approach 2:
The system optimizes combustion by carefully controlling the parameters of air supply, including flow rate, distribution pattern, and timing. By making precise parameter adjustments rather than simply increasing air supply, the system achieves improved carbonization rates while maintaining temperature control and preventing unwanted side reactions.
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 improves combustion and carbonization efficiencies, suppresses gas outflow, and promotes high-purity water gas production, enabling efficient power generation and hydrogen production from biomass.
Implementation Method 1
carbonizing organic waste to generate carbide
Implementation Method 2
partial combustion of the organic waste
Implementation Method 3
generating water gas (mixed gas containing, as main contents, hydrogen gas, carbon monoxide gas, and carbon dioxide gas) through a pyrolysis reaction between the carbide and superheated water steam
Implementation Method 4
generating water gas through a pyrolysis reaction between the carbide and superheated water steam which is a gasification agent
Implementation Method 5
supplying the combustion gas discharged from the pyrolytic furnace to a steam generator, supplying the combustion gas discharged from the steam generator to a steam superheater
Implementation Method 6
steam superheater that superheats, with the combustion gas, the water steam generated by the steam generator
Data Source
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AI summary
Provided is a carbonizing furnace capable of improving combustion efficiency of combustible gas generated by combustion of organic waste and of improving carbonization efficiency of organic waste by appropriately controlling the temperature of carbide. Provided is a pyrolytic furnace in which heating gas can be suppressed from outflowing to the outside from a gap between the upper surface of the body part of the pyrolytic furnace and the outer circumferential surface of a reaction tube where a pyrolysis reaction between carbide and a gasification agent is caused, and in which the temperature of a region where the pyrolysis reaction is caused can be suppressed from being reduced. Provided is a water gas generation system which improves thermal efficiency without using a dedicated heat source for generating water steam to be used as a gasification agent for carbide, promotes a pyrolysis reaction, and thereby, achieves the excellent heat efficiency. Provided are a hydrogen gas generation system and a power generation system which use water gas generated by a water gas generation system including a carbonizing furnace and a pyrolytic furnace and which have excellent productivity. Provided is a carbonizing furnace which improves combustion efficiency by controlling the supply amount of air being supplied to the carbonizing furnace according to the temperature of combustion gas in the carbonizing furnace, and which improves carbonization efficiency by controlling the discharge amount of carbide to be discharged to the outside according to the temperature of carbide or the deposit amount of organic waste in the carbonizing furnace, to make the temperature of carbide appropriate, and by controlling the temperature of air being supplied to the carbonizing furnace. In addition, provided is a pyrolytic furnace which blocks outflow of heating gas or water gas by providing seal portions at the attachment positions of a body part, a reaction tube, and a water gas outlet part, etc. of the pyrolytic furnace, and which maintains a pyrolysis reaction temperature by providing a pyrolysis promoting mechanism to the reaction tube. Provided is a water gas generation system which has excellent thermal efficiency and in which a combustion gas flow path is formed so as to allow combustion gas generated by a carbonizing furnace to flow through a carbonizing furnace, a pyrolytic furnace, a steam superheater, a steam generator, a dryer, and the like. Provided is a hydrogen gas generation system or a power generation system formed by combining the water gas generation system with a hydrogen purifying apparatus or a power generation equipment.