Boiler & Steam Utility System [Compatibility Mode]

7/28/2019 Boiler & Steam Utility System [Compatibility Mode]

1/11

BOILER & STEAM UTILITYBOILER & STEAM UTILITY

SYSTEMSYSTEM


2/11

Boiler ConstructionBoiler Construction

As per IBR regulations 1950.As per IBR regulations 1950. Heating surface areaHeating surface area-- 148 m148 m22

Water holding capacityWater holding capacity-- 12 m12 m22

-- ..

Shell diameterShell diameter-- 2.4 m2.4 m

Corrugated furnace diameterCorrugated furnace diameter-- 1.121.12 mm


3/11

Material of constructionMaterial of construction

Shell & furnace platesShell & furnace plates-- SA 515/516 Gr 70 CSSA 515/516 Gr 70 CSpressure vessel plates for medium & highpressure vessel plates for medium & high

tem erature service.tem erature service.

Plain & stay tubesPlain & stay tubes-- confirming to BS 3059confirming to BS 3059

Valve body _ carbon steel WCB with flangedValve body _ carbon steel WCB with flanged

end connections.end connections. Fusible plugFusible plug-- Alloy comprising of Tin, Lead &Alloy comprising of Tin, Lead &

antimonyantimony


4/11

Boiler mountingsBoiler mountings Water gauge glasses mountingsWater gauge glasses mountings-- consists ofconsists of

steam side cock & water side cock, levelsteam side cock & water side cock, level

glass, protector & drain lines.glass, protector & drain lines. Pressure gaugePressure gauge-- Bourdon pressure gaugeBourdon pressure gauge

10 dia. dial with a range: 010 dia. dial with a range: 0--25 Kg/cm25 Kg/cm22

Safet valves 40 x 80: s rin loaded fullSafet valves 40 x 80: s rin loaded full

lift safety relief valvelift safety relief valve-- 2 Nos.2 Nos. Feed check valveFeed check valve-- plate type mounted onplate type mounted on

feed pump dischargefeed pump discharge

Main steam stop valveMain steam stop valve-- Globe typeGlobe type

mounted on boiler drummounted on boiler drum


5/11

Mountings Continued .Mountings Continued . Blow down valveBlow down valve Parallel sliding typeParallel sliding type

mounted at bottom line from boilermounted at bottom line from boiler

Air vent valveAir vent valve-- Globe type mounted on top ofGlobe type mounted on top ofboiler drumboiler drum

Fusible plugFusible plug-- 2 Nos. of small welded fitting2 Nos. of small welded fittingfilled with low melting temperature alloy, onefilled with low melting temperature alloy, one

moun e on rever ng c am er ano er a enmoun e on rever ng c am er ano er a enplate on top of smoke tubes at 2plate on top of smoke tubes at 2ndnd 33rdrd passpassjunction chamber.junction chamber.

Man holeMan hole-- mounted on top of shellmounted on top of shell

Mud holeMud hole-- at bottom of shellat bottom of shell..


6/11

AccessoriesAccessories Feed water pumpsFeed water pumps-- 2 nos. of multistage2 nos. of multistage

centrifugal pump with a capacity of 12centrifugal pump with a capacity of 12

mm33

at 120 m head, Make: KSB MOVIat 120 m head, Make: KSB MOVI32/6 Operated with 10 HP induction32/6 Operated with 10 HP inductionmotor.motor.

--blower with 105 CMM capacity withblower with 105 CMM capacity withstatic pressure of 500 mm ofstatic pressure of 500 mm of wgwg..Operated by 20 HP induction motor.Operated by 20 HP induction motor.

Oil feed pumpOil feed pump-- internal gear type oilinternal gear type oilpump with a capacity of 1000pump with a capacity of 1000 lphlph withwithoperating pressure of 30 Kg/cmoperating pressure of 30 Kg/cm22


7/11

Accessories continued .Accessories continued . Oil preheating unitOil preheating unit-- Dual operatedDual operated

with electrical & steam oilwith electrical & steam oil pre_heaterpre_heaterwith shell & tube type heat exchangerwith shell & tube type heat exchanger

OilOil pre_filterpre_filter-- Bucket type filter withBucket type filter witha standbya standby

Burner assemblBurner assembl -- ressure et t eressure et t e

burner with auto regulatingburner with auto regulatingarrangement to meet loadarrangement to meet loadrequirement.requirement.

Modulating unitModulating unit-- Step less modulatingStep less modulating

unit with a turn down ratio of 4:1unit with a turn down ratio of 4:1regulating the air fuel requirement ofregulating the air fuel requirement ofvarious load requirementvarious load requirement


8/11

Instrumentation & safety cutInstrumentation & safety cutoffsoffs Extra low water level in drumExtra low water level in drum cut offcut offby Mobrey unitby Mobrey unit

High pressure switchHigh pressure switch-- Sensing the steamSensing the steampressure inside the boiler and trips thepressure inside the boiler and trips thefiring at the set pressure.firing at the set pressure.

--

mounted on the burner assembly, cut offmounted on the burner assembly, cut offthe fuel supply in absence of no flamethe fuel supply in absence of no flame

High flu gas temperatureHigh flu gas temperature-- cut offcut off

Low oil temperatureLow oil temperature-- cut offcut off Flue gas outlet damper closedFlue gas outlet damper closed-- cut offcut off

by limit switchby limit switch


9/11

Fuel oil SpecificationFuel oil Specification

Furnace oil confirming to IS 1593Furnace oil confirming to IS 1593--1988 grade MV1988 grade MV--22 Calorific valueCalorific value 9600 Kcal/ Kg (approx)9600 Kcal/ Kg (approx)

Kinematic viscosit @ 15Kinematic viscosit @ 15oo CC --125125 180 cSt.180 cSt.

Kinematic viscosity @ 100Kinematic viscosity @ 100oo C


10/11

Water Quality RequirementWater Quality RequirementAs per IS 10392As per IS 10392--19821982

Feed water requirement:Feed water requirement:--

Total hardness 10 mg/l maxTotal hardness 10 mg/l max pH valuepH value-- 8.5 to 9.58.5 to 9.5

Dissolved oxygenDissolved oxygen-- .1 mg/l max..1 mg/l max.

Boiler water re uirement:Boiler water re uirement:--

Total hardness Not detectableTotal hardness Not detectable pH valuepH value-- 11.0 to 12.011.0 to 12.0

Total alkalinityTotal alkalinity-- 700 mg/l max.700 mg/l max.

Caustic alkalinityCaustic alkalinity-- 350 mg/l max.350 mg/l max.

Residual sodium sulphite 30Residual sodium sulphite 30 50 mg/l50 mg/l Phosphates as (PO4)Phosphates as (PO4) 2020--40 mg/l40 mg/l


11/11

FeedFeed water treatmentwater treatment

Feed water treated by filtering through sand filterFeed water treated by filtering through sand filterbed.bed.

Then it passed through cat ion exchange bedThen it passed through cat ion exchange bed-- waterwater. ,. ,

sodium based salt.sodium based salt.

Then the dosing chemicals are added and it is storedThen the dosing chemicals are added and it is storedin the 10KL storage tank.in the 10KL storage tank.

From storage tank it feeds to boiler through feedFrom storage tank it feeds to boiler through feedpump.pump.

Boiler & Steam Utility System [Compatibility Mode]

Documents

Transcript of Boiler & Steam Utility System [Compatibility Mode]