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Sodium sulphate solution of required strength is

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Sodium Sulphate solution of required strength is dosed into differentfiltered water by mean of dosing pump to neutralize chlorine prior toactivated carbon filter.When water passed an activated carbon filter willremove residual chlorine from water.Provision is made for back washingthe activated carbon filter.When pressure drop across filter exceeds aprescribed limit from the activated carbon filter the works acid cation unit.The deception water the weak base anion exchanger unit water then entersde-gasifier unit where free CO2is scrubbed out of water by upwardcounter flow of low pr. air flow through degasified lower and degassedwater is pumped to strong base exchanger (anion exchanger).Page 57| TIP 2018
Arrangement for dosing ammonia solution into de-mineralized water aftermixed bed unit has been provided p+1 correction before water is taken inde-condensate transfer pump the DM water to unit condenser as make up.11.b C.W. PLANTCirculating water pump house has pumps for condensing the steam forcondenser.Five pumps are used for condensing Unit No. 1 & 2 and aftercondensing this water is discharged back into the river. Each pump hascapacity of 8275 M3/Hr and develop pressure about 1.94 kg/cm2. Threeseal water pumps are used for sealing up the circulating water pump shaftat pressure 4.5 kg/cm2.Two pumps for unit 1 & 2 with one standby is used for supplying rawwater to chlorified chemical dosing is tone between and chlorified water istaken through main line.From main line water passes through filter bed tofilter the water.Chlorified water is pumped to 42 m elevation by twopumps of capacity 270 M3/Inch at discharge pressure of 6.9 kg/cm2.At 42m elevation the water is stored in tank and used for cooling the oil coolersand returned to river. Oil coolers are situated on ground and there is no. oftress for each unit.11.c B.C.W. Pump HouseFilter water after demineralization is used for bearing cooling from BCWpump house after passing through strainer and heat exchanger it enters at30o-32oC and leave exchanger at 38oC.The raw water used in ash handlingplant and remaining quantity is stored in sumps of BCW Pump House.From here the water is pumped to CW Pump by TWS (Travelling waterscreens) pumps are run by motors of 90 KW and has a capacity of 240Cum/hr/pump at pressure of 5 kg/cm2.BCW here stand for water used forcooling oil used for cooling the bearing.In CW pump house water isdischarged from nozzle and impinged for travelling water screens forcleaning it.Page 58| TIP 2018
CONTROL ROOM12.a Main Control RoomIn control room various controls are provided simultaneously variousmeasurement are made various relays are provided here.InstrumentationLimited Kota is major supplier of apparatus.There is one unit control from which two adjacent unit of 110 MW eachcan be controlled.In addition are local panels at the boilers, turbo sets andboiler feed pumps.The operation of unit is basically controlled from unitcontrol room.

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Term
Winter
Professor
N/A
Tags
Combustion, Coal, Electricity generation, Boiler, Thermal power station, KSTPS

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