ashaka pulsejet presentation

7/25/2019 Ashaka PulseJet Presentation

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Pulse Jet Dust Collector

Bag Filters



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Bag Filter Training Ashaka / 16/01/16 - 2


Why dust collectors?


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Process Dust Collectors

Air Slide Dust Collectors

Bucket le!ator Dust Collectors

F" Pu#$ %eed ho$$er Dust Collectors

Silo Dust Collectors

Clinker Cooler Dust Collectors


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Bag Filter Training Ashaka / 16/01/16 - &



To se$arate solid $articulate #atter %ro# a gasstrea# in order to #aintain en!iron#entalco#$liance

'n #ost ce#ent #anu%acturing a$$lications( theDust Collector returns solid $articulate #atter )ackto the o$eration %or %urther $rocessing


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Bag Filter Training Ashaka / 16/01/16 - *



......and because DUST is also Money

(! " or #$


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Dust Collectors

+%&'ansion chabers+Cyclones+Multi)cyclones

+Sand *ilters+Scrubers+Fabric *ilters

+Cartridge+%SP


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Bag Filter Training Ashaka / 16/01/16 - ,


Fabric *ilters

+ Bag *ilters+ three ty'es according thecleaning syste

,. Sha-er

. /ir re0erse

1. Pulso 2et


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Bag Filter Training Ashaka / 16/01/16 -


Bag *ilter+ sha-er cleaning syste

+Particulate is collected on the inside sur*ace o*the bag. The dust)laden gas enters through thedirty side (inlet$ o* the collector and *lo3s u'through the bag.

Tensioning asse#)l. Cla#$s


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Bag Filter Training Ashaka / 16/01/16 -


Bag *ilter+ re0erse air

+/dditional *an createre0erse air *lo3 toblo3 the bags and the

ca-e is dislodged.Co'artents need tobe isolated.


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Bag *ilter+ 'ulso 2et cleaning syste

Blo3'i'e

Pulse

4nducedSecondary

5enturi

Cage

Sna' Band

Shoc-3a0e

Dust

Tube Sheet

6oral *lo3


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Bag *ilter+ 'ulso 2et cleaning syste


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PJBF Co'onents

+ Dust Collector 4nta-e+ De*lector! Di**user! or

Ba**le /ssebly

+ Dirty /ir Chaber+ /irloc-+ Filter Bag+ Cage

+ 5enturi+ Tubesheet


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PJBF Co'onents (cont7d$

Pulse Control Syste

Co'ressed /ir Su''lyMani*old

Solenoid 5al0e

Dia'hrag 5al0e Blo3 Do3n

Clean /ir Chaber

Dust Collector %&haust

Di**erential Pressure 4ndicator


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Bag Filter Training Ashaka / 16/01/16 - 1&


PJBF Co'onents+ Cleaning syste

The essential 'arts+

C.A. manifold (14)

Pneumatic valves (13)

Solenoid valves box (8)Air tube (7 / 19)

The airtight system betweenramps and body filter (detail B)

Air tube (compressed airdistributors) plus nozzles (5 / 6)


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PJBF Co'onents+ Mani*old

C./. Mani*old


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PJBF Co'onents

Mani*old

8

Pulse 0al0es

8

%&'ansion 2oint

8

/ir 'i'es

Clean air cha#)er


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Bag Filter Training Ashaka / 16/01/16 - 1,


PJBF Co'onents


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PJBF Co'onents

Solenoide !al!e )o


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PJBF Co'onents+ Tube sheet


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PJBF Co'onents+ Tube sheet

$

Don


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PJBF Co'onents

enturi CageBag


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PJBF Co'onents

Pulse !al!es Solenoide !al!es


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S.ste# %an creates air%lo thru Pulse 4et DC

Dust-laden gas enters thru inlet duct 5 !elocit.

'nitial se$aration occurs as gas !elocit. slos due

to increase in !olu#e as it enters dirt. air cha#)ergas !elocit. decrease allos coarse #aterial to %allout o% sus$ension7

Coarse #aterial se$aration %urther enhanced ).inlet )a%%le/de%lection $late that %orces gas to #akea)ru$t change in direction in dirt. air cha#)er

Princi'le o* 9'eration


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Change in direction %orces #ore coarse #aterial to%all out o% sus$ension

'nlet )a%%le also ser!es to di%%use air%lo e!enl.

throughout DC ensures e!en ear on %ilter #edia7 Fine #aterial le%t in sus$ension carried u$ard 8

de$osited on %ilter )ag sur%ace 9 %or#s a :cake; on)ag sur%ace

Bags cleaned regularl. to #aintain air%lo 9 done). )last o% co#$ressed air in


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:oles o* the 0enturi+'ncreases !elocit. to enhance shock

a!e created ). co#$ressed air $ulse

=educes %ilter )ag a)rasion ).

directing co#$ressed air )last tocenter o% %ilter )ag

Create secondar. induced dra%t %ro#clean air cha#)er 9 hel$s %ill )ags ith

air 8 enhances e%%ect o% shock a!edra#aticall. i#$ro!es cleaninge%%icienc.



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Blast o% co#$ressed air sto$s nor#al %lo o% gasesin the )ag 8 creates shock a!e that tra!els doninside o% cage 8 )ack u$

Shock a!e re#o!es agglo#erated :cake; %ro#sur%ace o% the )ag

Agglo#erated #aterial %alls as a #ass into )otto#o% dirt. air cha#)er ). gra!it.

Su$er%ine $articles are re-entrained



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A%ter $assing thru %ilter #edia( clean gas strea#eits clean air cha#)er thru ehaust duct

>aterial collected in ho$$er is #etered out ).

so#e %or# o% airlock or scre con!e.ors Airlock 5 #aterial discharge acts as )arrier

)eteen %lo o% solids #aterial eisting DC7 8%alse air air tr.ing to enter %ro# ho$$er discharge?in leakage@7



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P l J t D t C ll t


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P l J t D t C ll t


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Bag ca-ing or ;P

The le!el o% )ag cakingis #easured ). the%ilter;s di%%erential$ressure ;P )eteenthe clean air cha#)erand the dirt. aircha#)er

,< WC

P l J t D t C ll t


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Bag ca-ing or ;P

,< WC



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9'tiu Cleaning Cycle

hat is the i#$ortance o% an o$ti#u# cleaning

c.cle con%iguration

>aintains rated air%lo through the Dust Collector

at all ti#es

>aintains sta)le dust return to the $rocess

$ti#iEes the use o% e$ensi!e co#$ressed air

nsures longest $ossi)le ser!ice li%e o% the %ilter#edia

Shortest $ossi)le ti#e to reco!er $ressure in #ani%old



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Pulsing s.ste# %reuenc.( duration( and seuencing

The $ulsing s.ste# is used to control the %iring%reuenc. and duration o% the indi!idual dia$hrag#

solenoid !al!es Freuenc. is con%igured to #aintain a sta)le DP

ensures a sta)le air%lo through the Collector

The duration is ad


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Pulsing s.ste# %reuenc.( duration( and seuencing

The $ulsing s.ste# is used to control the %iring%reuenc. and duration o% the indi!idual dia$hrag#solenoid !al!es

Freuenc. is con%igured to #aintain a sta)le DP

ensures a sta)le air%lo through the Collector The duration is ad


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Freuency

Too o*ten 9 Pre#ature )ag %ailure 8 high energ.

consu#$tionToo in*reuent 9 Garge dro$s o% #aterial 8 unsta)le dustreturned to the $rocess Also creates insta)ilit. in air%lo




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Duration

Too long9 aste o% co#$ressed air 8 increases header$ressures regain ti#ingToo short9 Shock a!e not strong enough to re#o!e %iltercake




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Seuencing

He!er $ulse to ad


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Pulse length+ >< s

10s - 30s )eteen $ulses

Shortest $ossi)le ti#e toreco!er $ressure in

#ani%old

Seuence ,!!1 @ Bad

Seuence ,!1!> @ Aood

6e0er2 ad


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Bag Filter Training Ashaka / 16/01/16 - &0


Ty'es o* Pulsing Control

Ti#er Board S.ste#s

Pulsing s.ste# runs continuousl. during o$eration

De%ined %reuenc. 8 duration



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Gocal Pulse on De#andS.ste#

Ti#er )oard c.cle starts 8sto$s )ased on targetdi%%erential $ressure



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u se Jet ust Co ecto


Progra##a)le Gogic Controllers PGCs7

Co#$uter controlled $ulsing s.ste# ca$a)le o% on-

de#and $ulsing 8 greater seuencing %lei)ilit.



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Co'ressed air

+Dry air

+> = P = bars



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Bag Filter Training Ashaka / 16/01/16 - &&

%ngineering

+ Ducting syste++ Ias s$eed %ro# 16 #/s to 2* #/s

+ Filtering 0elocity++ Fro# 1 #/#in to 2 #/#in+Also called air/cloth ratio

+ 5elocity can++ J300 %$# 1(* #/s7



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Filter Media Fabric Finishes

Con!entional De$th Filtration

=elies on $ri#ar. dust cake %or#ing in cross-section o%%iltration #edia

Secondar. dust cake accu#ulates on outside o% %iltrationsur%ace

Secondar. dust cake re#o!ed during cleaning c.cle

!er ti#e( $ri#ar. dust cake gets denser( reducing

$er#ea)ilit.Di%%erential $ressure increases steadil. o!er li%e o% %ilter

#edia



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Mebrane Sur*ace Filtration

Sur%ace la#inate a$$lied directl. to con!entional %iltration%i)re

%%ecti!e $ore siEe #uch s#aller than con!entional de$th%iltration #edia

Pri#ar. %ilter cake not reuired

S#ooth sur%ace released %ilter cake during cleaning c.cle

Per#ea)ilit. reco!ers to al#ost original le!els 8 no gradualdecrease in $er#ea)ilit. o!er ti#e

Consistentl. loer di%%erential $ressure across %ilter #edia(less a)rasion( increased air%lo 8 %ilter li%e



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Bag Filter Training Ashaka / 16/01/16 - &,

Filter Fabrics

T.$ical - $ol.ester or glasshigh te#$7 %elt

Allos $articles to #igratethrough o!er ti#e 8 )lind )ag

Heeds thick $recoat( la.er

Kigher LLL #e#)ranes likeIore-Te or te%lon PTF7

Shallo $enetration( lastslonger )e%ore )linding

$recoat not as critical

less $ressure dro$

Coarse PolyesterFelt+dee' 'enetration

Fine Mebrane+shallo3 'enetration



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Filter Fabrics



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Fabric Co'arison

Material >a $Te#$

Filtration A)rasion Cost

Poly'ro'ylene C Aood %&cellent "

Polyester ,1E C %&cellent %&cellent "

/crylic ,E< C Aood Aood ""

6oe& C Aood Aood ""

Fibreglass < C Fair Fair """



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Bag Filter Training Ashaka / 16/01/16 - *0

Fabric Finishes 6on)Fibreglass

Singe 9 i#$ro!es cake release

IlaEe/ggshell 9 $ro!ides short-ter# i#$ro!e#ent%or cake release( )ut #a. i#$ede air%lo

Silicone 9 aids in initial dust cake de!elo$#ent 8$ro!ides li#ited ater re$ellenc.

Fla#e retardant 9 retards co#)usti)ilit.( not %la#e-$roo%M so#e ater re$ellenc.( #a. i#$ede air%lo

Sur%ace #e#)rane 9 i#$ro!es %ine $articulateca$ture( %iltration e%%icienc.( cake release 8 air%lo



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Fabric Finishes ) Fibreglass

Silicone( gra$hite( te%lon 9 $rotects glass .arn %ro#a)rasion( adds lu)ricit.

Acid resistant 9 shields glass .arn %ro# acid attack



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Positi0e Pressure Dust Collector

ses %an on dirt. side o% DustCollector to $ush dust-laden gasthrough s.ste#

Ho $ressure di%%erential on casing 8

sideallsM onl. at#os$heric$ressure

Gess e$ensi!e than negati!e$ressure Dust Collector

Signi%icantl. #ore e$ensi!e too$erate 8 #aintain than negati!e$ressure Dust Collector



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6egati0e Pressure Dust Collector

ses %an on clean side o% Dust Collectorto $ull air through s.ste#

Filter strea#s contain high #oisture(

corrosi!e gases 8 high concentrations o%a)rasi!e dust

Structure #ust )e re-in%orced

Geakage contained inside Dust Collector

8 e#issions don;t reach at#os$hereear on %an less than ith $ositi!e

$ressure Dust Collector


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Bag Filter Training Ashaka / 16/01/16 - **

Bag Brea- 4n Procedure

Disa)le $ulse control s.ste# or isolate co#$ressed airsu$$l. to #ani%old to isolate cleaning s.ste#

$erate %an at ,*N o% target air%lo

Add conditioner

Start #ain $rocess line

$erate nor#all.( allo DP to reach &-*O C

na)le $ulse control s.ste# or re-esta)lish

co#$ressed air su$$l. to re-esta)lish cleaning s.ste# >onitor di%%erential $ressure until $rocess line has

sta)iliEed at nor#al



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4ns'ections

:unning 4ns'ection

Static 4ns'ection



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Bag Filter Training Ashaka / 16/01/16 - *,

4ns'ections+ the *ilter



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4ns'ections+ the su''ort



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4ns'ections+ Bearing su''orts



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4ns'ections+ con0eyors



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First le0el ins'ection

What Go36oise (Fro Dia'hrags$ %ar

Dust 'u**ing (Walls$ See

Cleaning seuence %ar

Dri0eHBearings IT Touch

;P (Bet3een E) 3.c.$ See

5)belts See! 6ose

Fan 0ibrations %ar! Touch

Auards See

4nlea-s (Doors! 2oints!housing! ducts$



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First le0el ins'ection

What Go3

Stac-er eissions See

Chec- *or cladding

Seuencial 'urging %ar

Chec- /HC 'ressure gauges (>) bars$ See

S'eed onitor

Da'ers 'osition See



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S'eci*ic ins'ection

What

Torn bags

Bloc-ed bags

Dia'hrag daaged

Chabers

Bearings

Aro-en scre3 *light

5)belts

Pulley status alignents

/ir sluiceHDouble *la' 0al0esFan da'ers

Fan i'eller



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K. Troubleshooting

=educed S.ste# Air%lo



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Sa*ety

=un cleaning #echanis# 20 #ins( %an o%% to clean %ilter)ags

Discharge all #aterial %ro# collection ho$$er

Shut o%%( )lank 8 tag co#$ressed air su$$l. 8 relie!e

$ressure in header Gock out electrical $oer on all rotating eui$#ent

)eing ser!iced

Follo con%ined s$ace entr. $rocedures to the letter '% o.gen-de%icient( $urge ith %resh airM secure or

re#o!e doorsM ensure sa%e orking at#os$here



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Sa*etyL..

Cool internal )e%ore entering to a!oid high internalsur%ace te#$s

ear $ro$erl. %itting res$irator or dust #ask henorking inside

Take etre#e care hen orking inside 9 tri$$inghaEardsQ

)lo dons

$er%orated tu)esheet



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