FabriClean™
34Pages

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 1 Edition EMB Rev 13 Presentation of Pulse Jet Fabric Filter FabriCleanTM General FF schematic layout

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 2 FabriClean UniClean PulseClean Return to layout FabriClean „XSide entry with gas/dust distribution „XDown flow in bag zone „XSplit into compartments „XDesigned for use of long bags (6-8 m) „XUsed in power boilers, mineral industry, waste incineration etc. „XLow pressure cleaning „XSemi compartment offline cleaning UniClean „XBottom entry to compartments „X Up flow in bag zone „X Big pre-seperation effect incorporated „X Act as one compartment „X Designed for use of bags up to approx. 4.5 m „X For processes with high dust load or where...

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 3 „X Modest space requirements „X Unique gas/dust distribution system „X Modern control system to control cleaning „X Auxiliary equipment „X Designed to meet the most stringent emission requirement „X Designed to accommodate long life time of filter media „X Low steel weight „X Easy maintenance Highlights Return to layout

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 4 General layout The FF consists of a number of groups Outlet damper Weather enclosure Top box Outlet duct Casing Dust removal systems Insulation Bags and cages Gas distribution Access Inlet damper Return to front page Construction Inlet duct Cleaning principle (Needle Felt Bag & Glass Bag) Hopper Control system Site photos Highlights FF types Support References

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 5 Details of gas/dust distribution Inlet duct Outlet duct Outlet damper Inlet damper Guide vane Distribution screen 6 5 4 2 3 1 7 8 9 1 Gas inlet ( 15-18 m/sec) 2 Inlet to compartment 3 Dust extraction 4 Gas is distributed and goes through distribution screen 5 Dust down flow between bags 6 Clean side of filter 7 Gas outlet 8 Collected dust 9 Dust drop out Return to layout

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 6 Gas/dust distribution Distribution screen (Shown schematic) Distribution screen (Shown schematic) Clean gas outlet Raw gas with dust inlet Guide vanes Dust drop out Baffle plate (One of more options) Distribution screen Type T Collected dust Dust drop out Return to previous Dust laden gas enters the inlet duct from the process equipment and flows through the inlet damper into the individual compartments containing the filter bags. The gas velocity is lowered significantly in the gas distribution chamber, therefore a big part of the dust...

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 7 Gas distribution Types Type I Return to previous Return to layout Type T Type L

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 8 Cleaning principle Needle Felt Bag Dust fallout Purge air Raw gas with dust Clean gas outlet Filter bag Cage Filter bag Cage Clean gas outlet Filter cake Venturi Tube sheet Tube sheet Return to layout Filtration phase Bag cleaning phase Primary purge air Secondary purge air Unique function 12 pieces 250 Glass Bag

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 9 Cleaning principle Glass Bag Dust fallout Purge air Raw gas with dust Clean gas outlet Filter bag Cage Filter bag Cage Clean gas outlet Filter cake Venturi Tube sheet Tube sheet Return to layout Filtration phase Bag cleaning phase Primary purge air Secondary purge air Unique function 16 pieces 150 Needle Felt Bag

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 10 Bags Cages Return to layout Snap ring Installation Temperature limits o C A: PTFE needle felt B: PPS needle felt C: Wowen glass with e-PTFE membrane D: Polyimide needle felt E: Polyester needle felt F: m-Aramid needle felt G: Pan 125 Typical bag material 260 190 260 240 150 200 Each filter bag incorporates a stainless steel snap ring sewn into the top of the bag which, when fitted, locates securely in the tube sheet effecting a seal. Bags pre-erected with cages Up to 8 m bag design A B C D E F G Correct bag/cage fit is Essential for long...

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 11 Cages Return to Cleaning princp. To support the fabric of the bag a mild steel wire (or stainless steel) cage is provided. The cage is designed to support the fabric evenly and restrict flexing and abrasion of the filter bag whilst allowing optimum dust release at the time of cleaning. The cage will be without joints as standard, but can be offered with a split joint if required. Each cage consists of 10 to 16 vertical wires, depending of the choice of the fabric, evenly spaced about its’ circumference which are, in turn, attached to...

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 12 Top box Tube sheet Filter wall Venturi Cage Filter bags Tube sheet 127 or 150 mm 175 mm 175 mm 170 mm Return to Cleaning princp. „X Minimum 4 mm thickness „X Stiffened to reduce distortion „X Precision cut holes „X Mild or stainless steel Tube sheet Return to layout

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 13 Casing Top box Side panel Division wall Gable panel Inlet duct Support beam The complete filter casing will normally be fabricated from 5 mm mild steel, stiffened internally and externally by rolled steel sections and tubes to withstand the gas pressure, wind loads and the earthquake zone if required. Outlet duct Single type Parallel type Return to layout

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 14 Top box Assembly Compressed air manifold Diaphragm valve Insulation lid Top box lid Lifting eye Venturis Purge tubes Tube sheet Soft glass fibre gasket Tob box examples Return to layout Designed for efficient thermal insulation to prevent corrosion in the top box. Top box types

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 15 Return to layout Return to Top box assembly Single type Double type Outlet damper Outlet damper Top box Types

Pulse Jet Fabric Filter FabriCleanTM May 7, 2010 16 Quality proprietary valves used 38 mm minimum size Easily accessed and maintained Compressed air manifold Air actuated diaphragm valves Return to top box assembly Return to layout The compressed air manifolds for each compartment will be fitted with 1 pressure switch (CE marked if required) to monitor the correct performance of the diaphragm valves. When the diaphragm valves are activated the pressure in the compressed air manifolds is detected to identify that the valve open and closes correctly. The signals from the compressed air...