technical NOTES

S.N. Description RABH Pulse Jet Hybrid Filter ESP with GCT

9 Dust conveying

equipment

Long as

compared to

PJBH due to

high cross

sectional area.

smaller as

compared to

RABH

Smaller as

compared to

RABH

Additional

equipment for

GCT

10 Maintenance Online

maintenance

possible but

cumbersome.

Online

mainte-

nance is user

friendly

Online

maintenance is

not possible

Online

maintenance is

not possible

11 Cleaning air Requires low

pressure for

long duration

by reverse air

fan

Requires high

pressure

for short

duration by

compressor

Requires high

pressure for

short duration

by compressor

but rapping

mechanism for

the Electrode

cleaning in ESP

field

No cleaning air

is required

12 Operation One

chamber

is always

shut during

operation for

cleaning of

bags causing

fluctuation in

the process air

flow.

Online

cleaning is

there. No

chamber

is shut for

cleaning

purpose. No

such process

fluctuation is

there.

Plant operation

gets affected

due to ESP

tripping and

overloading of

bag filter.

Plant requires

a shutdown

for any

mechanical

tripping in

ESP.

13 Bag life Expected Bag

life is approx.6

years due to

low cleaning air

pressure.

Expected bag

life is approx.

4 years

due to high

cleaning air

pressure.

Expected bag

life is approx.4

years due to

high cleaning

air pressure.

Not

Applicable

14 Pressure drop Approx.90 mm

WG

Approx.95

mm WG

Approx.140 mm

WG

Approx.25 mm

WG in ESP and

40 mm WG for

GCT

15 Power

consumption

Higher due to

extra fan power

Low

compared to

RABH

Higher

compared

to RABH

but lower

compared to

PJBF

High

compared to

others