Self-Regenerative Electrostatic Precipitator Using Induction Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing combustion systems, such as biomass boilers and diesel engines, face challenges in effectively removing and regenerating particulate matter from gas streams due to the accumulation of particles on filters, which reduces filtration efficiency and requires frequent regeneration or mechanical cleaning.
Innovation Solution
A self-regenerative electrostatic precipitator system that uses electromagnetic induction to heat the walls of a cylindrical conduit, causing deposited particles to burn off and maintain continuous operation by generating a corona discharge and deflecting charged particles to an outer deposition electrode, with induction coils wound around the conduit to manage heating and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a filtering system accumulates particles over time, then particle removal capacity increases, but filtration efficiency decreases and requires regeneration
Solution Approach 1:
The electrostatic precipitator automatically regenerates by using the collected particles themselves as fuel. The accumulated carbon particles on the collector electrode are ignited and burned off, cleaning the surface without external intervention. This self-service mechanism resolves the contradiction by allowing continuous particle accumulation while maintaining filtration efficiency through automatic regeneration.
Solution Approach 2:
The system changes the temperature parameter of the collector electrode from ambient to combustion temperature (approximately 600-800°C) to transform the accumulated particles from a harmful deposit into a useful fuel source. This parameter change enables the particles to serve dual purposes: first as filtered output, then as regeneration fuel, resolving the efficiency degradation problem.
2Ease of operation
If mechanical cleaning elements are introduced to remove deposited particles, then particle removal is achieved, but device complexity increases
Solution Approach 1:
The patent replaces mechanical cleaning systems (shakers, scrapers, or water jets) with a thermal field-based regeneration system. Instead of using mechanical forces to remove particles, the system uses electromagnetic induction to generate heat in the collector electrode, causing particles to burn off. This substitution eliminates complex mechanical moving parts while achieving effective particle removal.
Solution Approach 2:
The system utilizes the phase transition of carbon particles from solid deposited state to gaseous combustion products. By heating the collector electrode to combustion temperature, the accumulated particles undergo oxidation and vaporize, converting them from a problematic deposit into a cleaning mechanism. This phase transition approach replaces mechanical removal with a chemical-thermal process.
3Reliability
If hot gases are used for regeneration, then particle burning is achieved, but energy consumption increases
Solution Approach 1:
The system converts the harmful accumulated particles into a beneficial fuel source for regeneration. Instead of treating the deposited carbon as waste that requires external energy for removal, the system ignites these particles to provide the heat necessary for their own combustion and for cleaning the collector surface. This converts a liability into an asset, reducing external energy requirements.
Solution Approach 2:
The patent merges the filtration function and regeneration function into a single integrated system. The same collector electrode that accumulates particles during filtration serves as the combustion chamber during regeneration. The accumulated particles and the oxygen supply are combined in the same space, allowing self-sustaining combustion without requiring separate regeneration equipment or additional energy input systems.
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
This system enables continuous and efficient removal of solid particles from gas streams, maintaining filtration efficiency by periodically burning off deposited particles, thus reducing emissions and eliminating the need for frequent mechanical cleaning.
Implementation Method 1
a series of induction coils outside the tube will be electrically activated. These coils wound around the conduit will receive high-frequency alternating current, generating electromagnetic induction in the wall of the conduit and thereby heating it with the currents induced in same
Implementation Method 2
A cylindrical precipitator with a high-voltage electrode in the center of the chimney or gas conduit generates a strong electric field which results in the creation of a corona discharge region. The particles in suspension in the gas stream, most of which are of a carbon origin (unburned), are ionized and deflected towards the deposition electrode by the same electric field that charged them
Implementation Method 3
electrostatic precipitators that electrically charge the particles to then remove them from the gas stream as a result of the strong electric field generated between two electrodes
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a self-regenerative electrostatic precipitator (10) of the type comprising a discharge electrode (1) located inside a gas conduit (3) for generating a corona discharge and for depositing solid particles in suspension in a gas stream (11) circulating through the conduit (3) in a deposition layer (4) on the inner wall of the conduit (3). The electrostatic precipitator (10) comprises at least one cleaning assembly (7) arranged outside the conduit (3), each cleaning assembly (7) having at least one induction coil (6) wound around the conduit (3) for heating the wall of the conduit (3) by electromagnetic induction. The electrostatic precipitator (10) reduces emissions of solid particles in suspension in a gas stream.