Bag Filter Pulsing Control for Moisture Clogging Prevention
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Solution Overview
Problem
Conventional bag filters face issues with clogging due to moisture, leading to increased fan resistance, reduced efficiency, and frequent filter bag replacement, with existing solutions either increasing costs or requiring system shutdowns.
Innovation Solution
A bag filter system with integrated temperature and humidity sensors controls pulsing duration and cycle based on environmental conditions to minimize clogging, using a pulsing unit and dual control valves to manage gas flow through inner and lower filter bags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-pressure pulsing gases are injected frequently to remove moisture and dust, then clogging is reduced, but filter bag durability decreases and operating costs increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the pulsing cycle and duration based on temperature and humidity conditions. When temperature decreases or humidity increases (indicating moisture risk), the pulsing frequency and duration are increased to prevent clogging. When conditions are favorable, pulsing is reduced to extend filter bag life and lower operating costs.
Solution Approach 2:
The patent implements feedback control using temperature and humidity sensors that continuously monitor the gas stream conditions. The sensor data feeds back to the control unit, which automatically adjusts the pulsing parameters in real-time, creating a closed-loop system that optimizes both clogging prevention and filter bag durability.
2Reliability
If pulsing duration is increased to remove adhered moisture, then clogging is minimized, but energy consumption and operating costs increase
Solution Approach 1:
The patent uses periodic pulsing action rather than continuous operation. The pulsing is performed in cycles with specific durations and intervals, adjusted based on moisture risk assessment from temperature and humidity readings. This periodic approach maintains effective clogging prevention while significantly reducing energy consumption compared to continuous pulsing.
Solution Approach 2:
The patent applies partial action by using pulsing duration and frequency exactly sufficient to prevent clogging under current conditions, not excessive treatment. The control unit calculates the minimum necessary pulsing parameters based on sensor data, avoiding unnecessary energy expenditure while maintaining reliable clogging prevention.
3Productivity
If filter bags are replaced frequently to maintain efficiency, then dust collection performance is maintained, but operational downtime and costs increase
Solution Approach 1:
The patent performs preliminary action by proactively preventing dust adhesion and moisture accumulation on filter bags through controlled pulsing. By maintaining the filter bag surface in a clean state through regular light pulsing, the system extends filter bag life and delays the need for replacement, reducing operational downtime.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining consistent dust collection efficiency through automated pulsing that prevents performance degradation. The system continuously monitors conditions and adjusts pulsing to keep filter bags operating at optimal efficiency throughout their extended service life, avoiding sudden drops in performance that would require immediate replacement.
Data Source
AI summary
The present disclosure relates to a bag filter system and operation method thereof to minimize clogging due to moisture, particularly to a bag filter system to minimize clogging due to moisture which includes a pulsing unit that supplies high-pressure compressed gases into an inner filter bag when dedusting the inner filter bag; a pulsing control portion that controls injection duration and cycles of compressed gases by the pulsing unit; a temperature sensor that measures temperature inside a main body of the bag filter; and a humidity sensor that measures humidity inside the main body of the bag filter. The pulsing control portion regulates the injection duration and cycle based on temperature values and humidity values measured in the temperature sensor and the humidity sensor, respectively.