Technical data

CHAP-03 BRIEF SYSTEM DESCRIPTION Page 6 of 20
trippers will be provided for storage of coke. Coke will be reclaimed by
an underground reclaiming conveyor as shown in the drawings.
Additionally a 1400mm wide 200 t/h conveyor streams shall be provided
to carry BF coke from existing CSP-1 and feed to two numbers of 100t
capacity RCC surge hoppers provided over conveyors K11-13 & K11-14.
Each surge hopper shall be provided with level meters & belt weigh
feeders to properly proportion the coke coming from CSP-1 & the new
CDCP plant.
To take tapping from existing conveyor KD-1 a fixed tripper with a
bifurcated gate shall be provided. One leg of the chute will feed coke to
the new conveyor KA-1 of 1400mm wide & the other leg will feed the
conveyor KD-1. A split gate shall be provided to enable feeding of coke
to both the conveyors simultaneously. The walkway of conveyor KD-1
shall be suitably modified in the vicinity of the fixed tripper to facilitate
movement of plant personnel.
All the buildings, junction houses, conveyor galleries will have adequate
facilities like ventilation, illumination, hoisting and handling equipment,
dust suppression facilities, etc. wherever necessary. All buildings shall
be provided with LSTB system for communication.
Further, a dust extraction system shall be provided in the proposed Coke
Dedusting Unit (CDU). A brief description of the same is given below:
03.03.03 Dust Extraction System with Air Blasting Unit
03.03.03.01 Brief Description
A dust extraction system with an air-blasting unit is to be provided in the
coke-dedusting unit (CDU).
The system shall comprise dust extraction unit and air blasting unit. The
dust extraction unit shall comprise suction hoods on the coke dedusting
chute, ducting network, electrically operated dampers, bag filter unit,
centrifugal fans, stack, electrics & control.
Bag filter unit shall consist of distribution chamber, filtering chamber with
filter bags & fitting for the bags, outlet chamber, dust collection hopper
with rotary air lock valves & screw conveyor, dust storage cum disposal
hopper with rack & pinion gate and disposal chute, structural stair case
and platform, timers etc. and one multiclone and one spark arrestor in
the ducting network at the inlet side of distribution chamber of bag filter
unit. (these two equipment are required to collect the hot/ glowing coke
particles thereby preventing them to enter into bag filter). Two suction
ducts of the ducting network shall be provided with electrically operated
dampers & flanges for connecting them with the coke dedusting unit
(CDU) chambers (2 nos.) separately.