Pulse Dust CollectorThe Cleaning Cycle Refers To The Time Interval Between Two Pulse Jet Cleaning Operations, Which Directly Affects The Dust Removal Efficiency, Filter Bag Life, And Equipment Energy Consumption. A Short Cleaning Cycle Can Lead To Waste Of Compressed Air And Increased Wear Of Filter Bags,
If It Is Too Long, It Will Increase The Resistance Of The Filter Bag And Decrease The Dust Removal Efficiency. The Following Provides A Detailed Explanation From Two Aspects: Influencing Factors And Determination Methods:
1、 Core Influencing Factors Of Dust Cleaning Cycle
1. Dust Characteristics
The Higher The Concentration (such As The Dust Concentration In The Mining Crushing Process Reaching 500g/m ³), The Faster The Dust Accumulation Rate Of The Filter Bag, And The Cleaning Cycle Needs To Be Shortened (possibly Set To 5-10 Minutes).
Low Concentration Dust (such As Grain Processing Dust<50g/m ³) Can Extend The Cycle (10-30 Minutes).
Fine Dust (such As Cement Powder, Metal Oxides) Can Easily Clog The Pores Of Filter Bags, And The Cycle Needs To Be Shortened;
Viscous Dust (such As Oily And Hygroscopic Dust) Is Prone To Adhere To Filter Bags, And It Is Necessary To Increase The Frequency Of Dust Cleaning, Even With Auxiliary Cleaning Methods Such As Back Blowing.
Conductive Dust (such As Coal Powder And Aluminum Powder) Should Be Prevented From Static Accumulation, And The Cleaning Cycle Should Be Combined With The Design Of Anti-static Filter Bags To Avoid The Risk Of Sparks Caused By Excessive Length.
2. Equipment Operating Parameters
The Larger The Air Volume (such As A Large Cement Kiln Dust Collector With An Air Volume Greater Than 100000 M ³/h), The Higher The Load On The Filter Bag, The Faster The Ash Accumulation Rate, And The Need To Shorten The Cycle.
High Temperature Resistant Filter Bags (such As Metas) Have Low Porosity And Require A Shorter Cleaning Cycle Than Ordinary Polyester Filter Bags;
The Larger The Filter Bag Area, The Lower The Dust Load Per Unit Area, And The Cycle Can Be Appropriately Extended.
3. Operating Conditions
Filter Bags Are Prone To Hardening In High-temperature Environments (such As Boiler Flue Gas>150 ℃), And The Cleaning Cycle Needs To Be Shortened To Prevent Filter Bag Rupture;
High Humidity (>80%) May Cause Dust Agglomeration, And It Is Necessary To Shorten The Cycle And Cooperate With Insulation Measures To Avoid Filter Bag Sticking.
Continuous Operating Equipment (such As 24-hour Non-stop Production Lines) Requires More Frequent Cleaning Cycles, While Intermittent Operating Equipment Can Be Adjusted According To The Start Stop Frequency.
2、 Method For Determining The Cleaning Cycle
1. Based On Resistance (constant Pressure) Control
2. Time Based (timed) Control
