Electrostatic Boiler Particle Adhesion Prevention
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Solution Overview
Problem
Conventional coal-fired power boilers face inefficiencies due to combustion gas particles adhering to tubes and furnace walls, hindering heat transfer and requiring cumbersome cleaning methods.
Innovation Solution
Applying a negative voltage to the combustion unit to charge combustion gas particles negatively, and a positive voltage to a dust collector and furnace walls to create electrostatic repulsion, preventing particle adhesion and facilitating collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional coal-fired power boilers are used, then fuel combustion generates energy, but combustion gas particles adhere to tubes and furnace walls, reducing heat transfer efficiency and requiring complex cleaning devices
Solution Approach 1:
The patent replaces mechanical cleaning systems (soot blowers, rakes) with an electrostatic field-based particle removal system. By applying high voltage to furnace walls and collecting electrodes, combustion particles are electrostatically attracted and collected without mechanical contact, thereby improving heat transfer efficiency while eliminating complex mechanical cleaning devices
Solution Approach 2:
The patent introduces an electrostatic field as an intermediary between the combustion particles and the furnace walls. This electrostatic field acts as a mediator that guides particles to collection points without direct adhesion to heat transfer surfaces, using electric field lines to control particle movement and deposition
2Reliability
If soot blowers are used to remove adhered particles, then particle removal is achieved, but the system complexity and power consumption increase
Solution Approach 1:
The patent replaces mechanical soot blowers with an electrostatic field system that uses electric forces to move and collect particles. This substitution eliminates complex mechanical components (motors, nozzles, moving parts) while maintaining effective particle removal through electrostatic attraction to collecting electrodes
Solution Approach 2:
The electrostatic field system operates passively once established, using the natural electrostatic attraction between charged particles and collecting electrodes to achieve particle removal without requiring active mechanical intervention. The system self-regulates particle collection through the electrostatic field distribution
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
Effectively prevents combustion gas particle adhesion to tubes and furnace walls, improving heat transfer efficiency and simplifying cleaning processes by using electrostatic forces.
Implementation Method 1
a voltage application unit for negatively charging the fuel
Implementation Method 2
apply a positive voltage to a dust collector for collecting the combustion gas particles, such that the negatively charged combustion gas particles can be easily collected in the dust collector by the attractive force with the positively charged dust collector
Implementation Method 3
apply a negative voltage to a tube through which fluid flows, such that the negatively charged combustion gas particles are not adhered to the tube by the repulsive force with the negatively charged tube
Implementation Method 4
a combustion unit for combusting fuel and injecting a flame generated by the combustion into the furnace
Data Source
AI summary
A combustion gas particle adhesion prevention boiler includes a furnace for containing a combustion gas and passing an exhaust gas; a dust collector for collecting combustion gas particles present in the exhaust gas; a combustion unit for combusting fuel and injecting a flame generated by the combustion into the furnace in order to generate the combustion gas; and a voltage application unit for negatively charging the fuel. The combustion gas particle adhesion prevention boiler, and a method using the same, prevent combustion gas particles generated by the combustion of fuel from being adhered to a tube, the inner wall of a furnace, etc., by applying a negative voltage to the combustion unit, and applying a positive voltage to a dust collector, such that the negatively charged combustion gas particles can be easily collected in the dust collector by the attractive force with the positively charged dust collector.