Coal Catalyst Immersion Pretreatment for Lower SOx Combustion
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Solution Overview
Problem
Existing flue gas desulfurization methods require additional facilities and are labor-intensive, complicating the desulfurization process and increasing costs, necessitating a more efficient and cost-effective pretreatment system to reduce sulfur oxide emissions from coal combustion.
Innovation Solution
A pretreatment desulfurization system that immerses coal in a catalyst mixture of desulfurization catalyst and water, separating the catalyst-treated coal using a mesh conveyor, and recovers the catalyst for reuse, allowing simultaneous combustion with the catalyst.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If flue gas desulfurization facilities are constructed to remove sulfur oxides from industrial flue gas, then sulfur oxide emissions are reduced, but the device complexity and operational costs increase significantly
Solution Approach 1:
The invention applies preliminary action by immersing coal in desulfurization catalyst before combustion occurs. This pre-treatment modifies the coal properties in advance, enabling the catalyst to react with and remove sulfur oxides during the combustion process itself, rather than requiring separate post-combustion treatment facilities.
Solution Approach 2:
The invention extracts the desulfurization function from separate complex flue gas treatment facilities and integrates it directly into the fuel preparation process. By incorporating the catalyst into the coal before combustion, the harmful sulfur oxide generation is prevented at the source rather than treating it after emission.
2Object-affected harmful factors
If conventional flue gas desulfurization methods are implemented, then sulfur oxides are removed from flue gas, but labor requirements and operational costs increase
Solution Approach 1:
The invention applies self-service by making the coal itself carry the desulfurization catalyst, allowing it to perform its own cleaning function during combustion. The catalyst-immersed coal autonomously handles sulfur oxide removal through the embedded catalyst, eliminating the need for external treatment processes requiring significant human intervention.
3Object-affected harmful factors
If additional desulfurization facilities are constructed, then sulfur oxide removal capability is improved, but the implementation cost and time increase
Solution Approach 1:
The invention merges the desulfurization function with the existing coal combustion system by incorporating the catalyst into the fuel itself. This combination eliminates the need for separate desulfurization equipment, as the catalyst-immersed coal integrates the emission control function directly into the energy generation process.
4Object-affected harmful factors
If flue gas desulfurization processes are implemented, then sulfur oxide emissions are controlled, but the process complexity and maintenance requirements increase
Solution Approach 1:
The invention extracts the desulfurization function from complex multi-step flue gas treatment processes and simplifies it to a single pre-treatment step of immersing coal in catalyst. This extraction reduces the overall process complexity while maintaining effective sulfur oxide emission control.
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 effectively reduces sulfur oxide emissions during coal combustion, is easy to implement without additional facilities, and is economically and environmentally beneficial by recycling the desulfurization catalyst.
Implementation Method 1
a desulfurization catalyst having a desulfurization function... by adsorbing sulfur oxides (SOx)
Data Source
AI summary
Proposed is a pretreatment desulfurization system including: a first chute for supplying a pretreatment apparatus with coal transported by a belt conveyor; a pretreatment apparatus for immersing the supplied coal in a catalyst mixture obtained by mixing a desulfurization catalyst and water, thereby desulfurizing the coal; a mesh conveyor for separating the coal being immersed in the catalyst mixture and having passed through the pretreatment apparatus, into a liquid phase and a catalyst-treated coal; a mesh conveyor for transporting the catalyst-treated coal; and a storage tank for storing the transported catalyst-treated coal.