Biomass Boiler Dust CollectorThe Flue Gas Treatment Adopts The Basic Form Of The Main Product Cyclone Dust Removal+bag Filter+pneumatic Ash Conveying Equipment. Straw Cannot Be Completely Burned In The Boiler, So A Cyclone Separator Is Installed In Front Of The Bag Filter As A Combustion Settling Chamber. The Biomass Boiler Dust Collector Combines The Advantages Of Various Types Of Dust Collectors, Such As Chamber Back Blowing And Pulse Jet Cleaning, And Overcomes The Disadvantages Of Insufficient Intensity Of Chamber Back Blowing And Dust Re Adsorption Caused By Simultaneous Pulse Jet Cleaning And Filtration. It Has The Characteristics Of Small Footprint, Stable Operation, Stable Performance, Long Service Life Of Filter Bags, Good Dust Removal Efficiency, And Easy Maintenance. It Is Widely Used In Smoke And Dust Removal In Various Sizes Of Vertical Boilers And Power Boiler Industries.
The Rationality Of The Design Of Biomass Boiler Dust Collector Directly Affects The Efficiency Of Dust Removal, Whether The Production Conditions Are Normal, Whether The Equipment Operates Stably, And The Service Life Of The Filter Bag.
1. The Main Product Is The Design Of Cyclone Dust Removal. The Cyclone Dust Collector Can Capture Dust With A Particle Size Of 5 μ M Or More, Allowing A Higher Incoming Dust Concentration Of 1000g/m3, A Higher Temperature Of 450 ℃, An Incoming Airflow Velocity Of 12-20m/s, A Resistance Loss Of 588pa To 1960pa, And A Dust Removal Efficiency Of 50% To 90%. Experimental Studies On Flow Field Models Have Shown That The Inlet Performance Is Better With A Shell Shaped Structure. The Angle Between The Spiral Shell And The Cylinder Is Rotated 180 ° By The Airflow, And Then Tangent To The Outer Edge Of The Cylinder. When The Lower Pneumatic Ash Conveying System Is Not Working Properly, In Order To Prevent The Accumulation Of Ash And Damage To The Internal Flow Field Of The Dust Collector, A Bypass Ash Outlet Is Added To The Lower Part Of The Cyclone Dust Collector Ash Hopper To Protect The Use Of Bypass Ash Discharge After The Failure Of The Bin Pump Ash Conveying Device. A Manual Gate And Ash Discharge Valve Are Installed On The Bypass Pipe. The Main Wear Parts Of The Cyclone Dust Collector Are Distributed At The Inlet Of The Snail Shell And The Lower Half Of The Cone. There Are Four Methods For Making The Dust Collector, Including Boriding Method, Coating Method, Lining Method, And Using Wear-resistant (based On Actual Reports) (based On Actual Reports) Materials. The Design Uses Turtle Shell Mesh Lining Method To Improve Performance Stability.
2. Design Of Protection System. When Abnormal Situations Occur In The Biomass Boiler Dust Collector, A Bypass Should Be Set Up To Protect The Dust Collector. There Are Usually Two Types Of Bypass, One Using An External Bypass Form And The Other Using An Internal Bypass Form. Install Pneumatic Lift Valves Or Electric Actuators At The Bypass Inlet, And Incorporate Them Into The Automatic Control System And Manual Opening And Closing. The Valve Plate Of The Bypass Damper Requires Sealing And Zero Leakage When Closed. The Dust Removal System Is Equipped With A Bypass Pipeline, Which Allows The Flue Gas To Be Discharged Through The Bypass Pipeline Without Passing Through The Filter Bag In The Event Of Boiler Oil Injection Or Abnormal Flue Gas Temperature, Thus Effectively Protecting The Dust Collector. At The Same Time, The Dust Collector Is Equipped With A Pre Spraying Device (pipeline Powder Spraying Device) For The Protection Of The Dust Collector Filter Bag During Pre Spraying.
3. Electrical Control Design. Based On The Characteristics Of The Use Of Biomass Boiler Dust Collectors, The Entire Set Of Dust Collectors Is Equipped With Differential Pressure Gauges And Temperature Detection Instruments For Equipment Control, Online Detection, And Protection. The Cyclone Dust Collector And Bag Filter Ash Hopper Are Equipped With Electric Heating Devices, And Temperature Measuring Points Are Set Up In The Ash Hopper. When The Temperature Of The Ash Hopper Wall Is Higher Than The Design Value (adjustable), The Electric Heating Device Will Be Automatically Turned Off, And When It Is Lower Than The Set Temperature, The Electric Heating Device Will Be Automatically Turned On Again. The System Adopts PLC For Automatic Control, With Differential Pressure And Timed Ash Cleaning Control Modes Set, And Pressure, Temperature, Material Level And Other Detection And Alarm Functions. The Biomass Boiler Dust Collector Is Equipped With An Online Detection Device For Flue Gas Temperature. When The Flue Gas Temperature Is Too High Or Too Low, Exceeding The Preset Alarm Value, The Bypass System Valve Is Automatically Opened To Discharge The Flue Gas And Protect The Filter Bag. The Silo Pump Is Started Using A Weighing And Ash Conveying Method, Which Improves The Utilization Rate Of Compressed Air And Reduces Equipment Wear.
