Bag Filter
November 12, 2018 | Author: ManekGoris | Category: N/A
Short Description
cement basic...
Description
Dust Colector /Penangkap Debu
Dust Colector /Penangkap Debu
Electrostatic precipitator
• Bag flter
Dust Colector /Penangkap Debu
Electrostatic precipitator
• Bag flter
Bag flters – Example: Pulse Jet
Prinsip Pembersihan embersih an Bag Filters Vibrator
a, b: c: d: e:
manual manual or mech mechani anical cal,, by by rappi rapping ng or shakin shaking g mechanical, by vibrating pneu pneuma mati tic, c, by by reve reverse rse air air flow flow (oft (often en com combi bine ned d wit with h shak shakin ing g or vib vibra rati ting ng)) pneu neumatic, tic, by co compre pressed ssed air air (p (pulse lse jet jet)
Reerse !as Bag Filter: "he "h e #$acuum #$acuum Cleaner% • Emisi Debu &'()*( mg/+m* • Biasan,a'-)'. mbar i uara ke ∆p kain0 ratio (12 m*/m-min • 3arge 4ootprint
enyaringan
embersihan
• 5n)'6 operasi chamber membutuhkan ruang ban,ak
7iklus Pembersihan Reerse !as Bag Filter #utlet Valve
"eflation Valve
urge !ir Valve
$lean %as #utlet "eflation %as urge !ir *ypass Valve
&haking 'echanism
"irty +lue %as nlet
ubesheet
"ust Etraction nlet Valve
Filtering
himble
Null
Deflation
Cleaning (Shake)
Purging Maintenance
Pulse Jet • • ∆p
• • •
enyaringan
embersihan
Emisi Debu&'()-( mg/+m* Biasan,a: '()'- mbar air)to)cloth rasio '1( m*/m-min 7mall 4ootprint an ieal untuk konersi EP n)chambers baik untuk imiliki Dian8urkan aan,a ruang gas bersih
7istem Pembersihan Pulse Jet #utlet Valve
$lean %as outlet
ube sheet
$ompressor or *lower
*ypass Valve
$ompressed !ir
%as nlet
"ust "isposal $age
Filtering
nlet Valve
Maintenance Pulse-Jet Cleaning
Filtering
Pulse Jet Cleaning0 9oe: nline • 9oe stanar 5flter ,ang paling umum an 8enis pembersih6 • "iak iperlukan kompartementalisasi • "iak iperlukan ining iisi0 engan emikian transportasi ebu ari konersi EP bisa igunakan kembali • kecepatan apat membatasi geometri pen,aring
+eele Felt •
• • •
•
Penetrasi partikel ebu halus ke alam 4abric an terus menerus0 meningkatkan i;1 pressure selama umur bag 9embersihkan puncak pulsa ebu Rata)rata: &-( mg/+m* emisi ebu 9emungkinkan peningkatan engan lapisan P"FE Jaminan antara - – < tahun
=oen glass fber engan P"FE 9embrane •
•
• • •
•
7lightl, higher 4abric tahan selama beberapa bulan pertama 9engabaikan Penetrasi ebu alam 8umlah besar ari cleaning pulses1 Rata)rata: & '( mg/+m * >ati)hati alam pemasangan ?ecepatan gas ,ang tinggi apat men,ebabkan kerusakan bag lebih muah Jaminan ari < tahun sampai < th @ - th pro rata
Proteksi Pen,aringan •
•
Chemical attack - Asam atau air konensasi Perhatikan titik embun 5air asam6 9echanical attack - Erosi 5lubang0 robekan0 emisi tinggi6 Perhatikan peoman kecepatan - Penetrasi ebu halus 5Di;1 Pressure tinggi0 emisi tinggi6 • "hermal attack Perhatikan kisaran temperatur 4abric 1
Filter Fabric max 1operation temp1 PE 5'ole men8ai korosi4 karena aa
kebocoran uara 5 4alse air masuk 6 - ?esalahan inikasi amper1
Bag flters – Filtration problems • nicators 4or mal4unction - >igh ust emission 5I -( mg/+m*6 - >igh pressure i;erence oer bag flter
5I '. mbar6 - A4ter o;)line cleaning still high ∆p
Bag flters ) Filtration problems • Causes 4or high ust emissions - Damage or missing flter bags Corrosion pada krangka, over-cleaning, bags menggesek pada bags or walls, over-temperature, too high ∆ p over bags, high gas velocities
- ?erusakan paa tube sheet or raH gas/ining
pemisah gas bersih - >igh cleaning 4reuenc, 5e1g1 Hrong timer
control6 - =rong 4abric - $er, fne ust particles
Bag flters ) Filtration problems • Causes 4or high ∆p or high cleaning 4reuenc, - >igh gas KoH rate 5e1g1 4alse air6 - >igh ust loa 5e1g1 osing Kuctuations6 - nsuGcient cleaning - Buil)up or blockages - Paa permukaan bag kasar seperti pasir 5e1g1 Coating keras0 moisture0 conensation0 compressible ust cake6 or insie 4abric 5penetration o4 er, fne particles0 conensation6 - =rong amper position inicator - =rong gas KoH control loops
Bag flters – Cleaning s,stem problems • nicators 4or mal4unction - >igh cleaning 4reuenc, or high pressure i;erence
oer flter 5I'. mbar6 - Dust buil up betHeen bags or bags/Halls - Bags blocke 0 krangka berkarat ekat bag enturi - Pressure turun selama seang cleaning c,cle - 9embrane ales are #bocor% an not beresis
Electrostatic Precipitators
EPLs ) Example ' >igh oltage suppl, - nspection oors an sealing * Discharge electroe rapping < nsulator casing 5o4ten in roo4 beam60 here penthouse . !as inlet 2 !as istribution Halls 5sometimes pre)collector Halls6 M Discharge electroe s,stem Collecting electroe s,stem N >opper '( Casing '' nsulation '- 7ample point 4or ust anal,sis
7istem rapping
7istem Elektroa solator egangan inggi (solator endukung)
inggi 'a4 5/,0 m
u l p m d e ) u n g c t r o e p l e a d g E o r t t i n k c e E l o l l e $ (
%as .arak antar plat /012311 mm
"ischarge elektroda
* "ahap Pengumpulan Partikel
6ecepatan erpindahan
m!
(78953 cms dan 781; dari debu tertangkap pertama pada< m 7=3; in 8 m, 7>3; in > m, 7>=; in 5/ m)
$harging - precipitation - rapping engisian muatan - engendapan - erontokan
kV
Charging – Precipitation ) Rapping • Charging
ibutuhkan mA
7emakin Besar Da,a akan 9engurangi Emisi Debu k? 7 kVavg m!avg
otensi untuk perbaikan
Emisi "ebu
6urva pengujian
k?
Charging – Precipitation ) Rapping
• Precipitation Dibutuhkan k$
Pengaruh Air terhaap Efsiensi EP 5=1 581
C y r d 531 < m D : 5/1 g m A r 511 t n e =1 t n o c t 81 s u d s 31 a g n /1 a e l $ 1
otensi erbaikan e4g4:
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