Flue Gas Desulphurisation (FGD) System Package for Lot-1A projects
“Salient Technical Features of the equipment/systems/services covered in Bidding
Document No.CS-0011-109(1A)-2 are mentioned below. These Salient Technical
Features are mentioned only to facilitate the prospective bidders to prima-
facie understand the requirements under the tender and shall not in any way limit or
alter the scope of work and technical features/specification of equipment/ systems/
services covered in the Bidding Documents. Detailed provisions in regard of scope of
work and technical features/specification of equipment/systems/services, contained in
the Bidding Document shall be final and binding.”
SALIENT TECHNICAL FEATURES
A Brief Scope of Work:
The scope of Flue Gas Desulphurisation (FGD) System Package for each project covered
under Lot-1A shall cover design, engineering, manufacture, shop fabrication, preassembly,
shop testing/type testing at manufacturer’s works, packing, transportation, unloading,
handling and conservation of equipment at site, complete services of construction including
erection, supervision, pre- commissioning, commissioning and performance testing of
equipments under bidder’s scope of work of FGD System, Lime stone handling, storage,
crushing and Gypsum handling & storage, low height wet chimney, Zero Liquid Discharge
(ZLD) in projects where applicable, and its associated auxiliaries including all associated
Electrical, Control & Instrumentation , Civil, Structural and Architecture works. Flue Gas
Desulphurisation System shall have but not limited to the following:
Complete Absorber with, structure, foundation and associated equipments- Spray
headers& nozzles, mist eliminators & washing, oxidation grid, agitators, quenching
spray system etc.;
Slurry re-circulation pumps, Oxidation blower, Gypsum bleed pumps, Limestone
grinding system, Limestone Slurry pumps, Vacuum belt filter system, Auxiliary
absorbent slurry pumps with drive motor, piping, valves, accessories;
Auxiliary absorbent tanks & limestone storage tank complete with structure &
foundation, agitators etc.;
Limestone silos complete with structure & foundation;
Process water storage and pumping system;
Booster fans, ducting, dampers along with supports;
Thermal Insulation, Lagging, Cladding, Painting;
Complete process water and slurry piping along with associated valves etc.
One (1) number of elevator for each absorber and One (1) numbers of elevator for
Limestone Grinding System building;
Low height wet chimney
Zero liquid Discharge system (ZLD) for FGD waste water treatment in projects where
applicable as indicated in detailed scope
Lime stone handling, storage, crushing and Gypsum handling & storage system
All Motors along with couplings and coupling guards for all rotating auxiliaries covered
under this package, Transformer, HT & LT Switchgears, DC system, Electric actuators
with integral starters along with associated accessories, HT & LT power & control
cables, cabling, lighting, earthing and lightning protection, DG set (if applicable) etc.;
Complete C&I systems including PLC based control system , field instrumentation with
associated PCP, power supply system, instrumentation cables and accessories etc;
Buildings for Slurry re-circulation pumps/Oxidation blowers, Limestone Grinding
System, Gypsum dewatering system & FGD control Room;
Associated Civil, Structural and Architectural works including foundation.
First fill and one year topping requirement of consumables/oils/lubricants, supply of
special maintenance tools and tackles, commissioning spares , mandatory spares etc.
Detailed scope of work has been specified in the bidding documents.
B. Other Technical Features:
1.00.00 Flue Gas Desulphurisation (FGD) System
1.01.00 System Description:
The FGD system shall be based on Wet Limestone Forced Oxidation process. Gas from
suitable point on ID fan discharge duct shall be taken to the Absorber. Clean gas from the
Absorber shall be taken through mist eliminators. Treated flue gas from the Absorber shall
be discharged to chimney. Gypsum from Absorber shall be pumped by dedicated gypsum
bleed pumps to a Gypsum Dewatering system. Washed and dewatered gypsum from the
dewatering system shall be fed to a belt conveyor and transferred to Gypsum storage
building.
1.02.00 Service Conditions
The Steam Generators are designed to burn pulverised coal. HFO/HPS/LSHS and LDO shall
be used during startup and at low loads for warm up and flame stabilization of Steam
Generator. The FGD system shall be designed to remove SO2 (to meet the stipulated
SO2 efficiency levels) from the flue gas generated in the Steam Generator with pulverized
coal firing.
