Horizontal Electrostatic Precipitator With Partitioned Flow Spaces
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Solution Overview
Problem
Existing electrostatic precipitators face challenges in maintaining efficient dust collection and washing processes due to inter-electrode rocking effects, uneven corona discharge, and inadequate washing water distribution, leading to reduced collection efficiency and potential short circuits.
Innovation Solution
A horizontal electrostatic precipitator with a housing divided into flow spaces by internal partition walls and passage switching members, allowing for controlled gas flow and washing water distribution, along with a washing water treatment device using an adsorption belt and scraper system to manage washing water effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between discharge electrode and collection electrode is increased to prevent inter-electrode rocking effect, then reliability is improved, but collection efficiency deteriorates and larger voltage is required
Solution Approach 1:
The patent applies vibration isolation mechanisms that dynamically respond to gas flow-induced vibrations, allowing the electrode support structure to absorb and dampen rocking motions while maintaining the optimal small distance between electrodes for high collection efficiency
Solution Approach 2:
The patent introduces vibration isolation elements as intermediary components between the electrode support structures and the housing, which mediate the mechanical stresses and prevent direct transmission of rocking forces while preserving electrode positioning accuracy
2Productivity
If the collection electrode is increased in size to improve dust collection capacity, then productivity is improved, but washing water distribution becomes uneven and device complexity increases
Solution Approach 1:
The patent divides the housing into multiple flow spaces separated by partition walls, and correspondingly segments the collection electrodes into multiple sections, allowing washing water to be distributed evenly across each smaller section while maintaining overall large collection capacity
Solution Approach 2:
The patent implements localized washing water nozzles positioned in each flow space to target specific sections of the collection electrodes, ensuring uniform washing coverage across the entire large surface area without requiring a complex centralized distribution system
3Productivity
If continuous washing is performed to maintain collection efficiency, then productivity is improved, but electrical arcs occur frequently due to floating water particles
Solution Approach 1:
The patent extracts and removes floating water particles from the gas flow path between the electrodes through carefully designed washing water delivery and drainage systems, eliminating the source of electrical arcs while maintaining continuous washing operation
Solution Approach 2:
The patent designs the washing water application system to quickly spray and immediately drain water in a controlled manner, reducing the residence time of water particles in the electric field and minimizing arc formation while maintaining continuous cleaning
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
Enables continuous gas purification and washing while maintaining efficient dust collection, preventing mist re-scattering and reducing electrical arcs, thereby improving overall collection efficiency and operational stability.
Implementation Method 1
an electrostatic precipitator generates a large number of electrons (ions) with corona discharge, in which case the generated electrons (ions) ionizes the surrounding gas molecules
Implementation Method 2
The gas molecules ionized in the electrostatic precipitator cause particulates (fine dust, debris, etc.) contained in the gas to combine thereto so that the particulates become charged (to have electrical polarity)
Implementation Method 3
which causes them to attach on collection electrodes due to electrostatic force
Data Source
AI summary
Disclosed herein is an electrostatic precipitation method using an electrostatic precipitator including a collection module having a collection electrode and a discharge electrode, a housing having an internal partition wall formed therein, an inlet-side passage switching member, and an outlet-side passage switching member. The electrostatic precipitation method includes collecting dust by applying a voltage to the discharge electrode while gas flows, closing some of the flow spaces, divided by the internal partition wall using the passage switching members, and performing dust collection for one of the opened flow spaces by applying a voltage to the discharge electrode therein, and performing washing for at least one of the closed flow spaces by supplying washing water to the collection electrode therein.