chp in india

8/13/2019 CHP in India

1/30

CONSTRUCTION

AND WORKING OF

COAL HANDLING PLANT

GUIDED BY

MR. RATAN ROY.

12/7/2013

1


2/30

PRESENTED BY

GROUP NO.4

12/7/2013

2


3/30

INDEX

Introduction.

Availability of Coal in India.

Transportation of Coal.

Analysis of Coal.

General Layout of CHP. CHP Auxiliary And Equipments

12/7/2013

3


4/30

INTRODUCTION

What is CHP?

CHP (C- Coal, H- Handling, P- Plant)

Which properly handles the coal from its

receipt to transferring it to bunkers.

Objective of CHP :-

To supply the quanta of processed coal tobunkers of Coal mills for Boiler operation.

To Stack the coal to coal yard.

1

2/7/2013

4


5/30

AVAILABILITYOFCOALININDIA.

Mostly E and F grade coal used in India.

Blending Is Done To get Average D Grade.1

2/7/2013

5

Grade C.V.

( K Cal / Kg. )

% Ash + Moisture

A > 6200 19.57

B 5601-6200 19.57 - 23.97

C 4941-5600 23.92 - 28.69

D 4201-5940 28.69 - 34.05

E 3361-4200 34.06 - 40.14

F 2401-3360 40.14 - 47.10


6/30

TRANSPORTATIONOFCOAL

5 ways of Transportation.

1. Railways.

2. Ropeways.

3. Roadways.

4. waterways.

5. Airway.

1

2/7/2013

6

Available only for TPS

nearer to coal mines

Have to build Runway near

TPS which is very costly.

waterway may not be possible

till TPS and Problem of

recalling arises if coal dip inwater

Best and Cheap

facility at Doorstep

Fear of thief


7/30

BYRAILWAY

80-90% of the requirement is fulfilled by this way.

Demurrage calculations on coal Rakes:-

We receive the coal wagons in the form of rakes

(55-60 wagons in each rake).

Free time normally 7 hrs. from Receipt of coal.

Free time is calculated from the receipt of written intimationof coal rakes from MAHAGENCO to the railway.

Rate of demurrage is Rs.100 / wagon / hr.

1

2/7/2013

7


8/30

ANALYSISOFCOAL

Chemical Analysis of Coal:-

Sample of coal is randomly collected from each

rake and detailed chemical analysis, calculation of

calorific value is carried out and is confirmed

whether it is as per agreement with the coal mines

or not.

1

2/7/2013

8


9/30

GENERALLAYOUTOFCHP

1

2/7/2013

9

Wagon Tippler Crusher House

Bunkers

Tripper Trolley

Conv. Belts VibratingScreens

Crushers

Feeder SurgeHopper

Hopper


10/30

CHP Auxiliaries

1

2/7/2013

10


11/30

OPERATIONALCYCLE

Bunkering Cycle

Stacking Cycle

Reclaiming Cycle

1

2/7/2013

11


12/30

BUNKERINGCYCLE

1

2/7/2013

12

Bunkers

From W/T

BunkeringBelts

Surge Hopper

Vibrating Feeder

Crusher House

Crusher


13/30

STACKINGCYCLE

1

2/7/2013

13Bunkers

Stacking Belts

Crushed

Yard

From W/TCrusher House

BunkeringBelts

By-Passed Coal

Coal Is not required if

bunker is full or Due any

maintenance


14/30

RECLAIMINGCYCLE

1

2/7/2013

14Bunkers

Reclaiming Belts

Crushed

Yard

Non-

Crushed

Yard

From W/TCrusher House

BunkeringBelts

If Outer Supply of coal

Is Not Present

Stacked Coal


15/30

WAGONTIPPLER

These are used to unload the coal wagons into coalhoppers in very less time (e.g. 20 wagons/hr. or more).

Weighing of coal is carried out at wagon tippler.

Normally 55-60 metric ton of coal come in each wagon.

1

2/7/2013

15

Wt of the coal =Wt. of loaded wagon Wt. of empty wagon


16/30

WAGONTIPPLERDRIVESYSTEM

1

2/7/2013

16

Motor

Pinion

Spur Gear

Thruster Brake

G / B


17/30

Wagon tippler

Mesh of 250 mm * 250 mmHopper

Vibrating Feeder

Conveyor Belt

To crusher House

GENERALLAYOUTOFW/T

1

2/7/2013

17


18/30

EQUIPMENTUSEDINW/T

Water Sprinkler System.

Dust Extraction System.

1

2/7/2013

18


19/30

CONVEYORBELTSYSTEM

Construction of Conveyor Belt

Conveyor Belt Drive System

Counter Weight

Idlers Protection System

Interlocking

Magnetic Separator

1

2/7/2013

19


20/30

CONSTRUCTIONOFCONVEYORBELT

Synthetic rubber.

4 ply means 4 nylon net in between 2 mm thick rubbercoating is used.

At KTPS belt of 1000 mm width is used.

Width varies from 500 mm -1400 mm.

1

2/7/2013

20

Net

Strength = 600 N

1000 mm


21/30

CONVEYORBELTDRIVESYSTEM

1

2/7/2013

21

Motor G / B

Fluid Coupling

Filled with 3/4th oil

Fusible plug Head End Pulley

Tail End Pulley

oSpeed before crusher 2.4 m/sec

oSpeed After Crusher 2.7 m/sec

Belt Speed


22/30

COUNTERWEIGHT

1

2/7/2013

22

Return Idlers

Idlers

Counter Weight

Head End Pulley

Tail End Pulley

Conveyor Belt

Railing

Take-up Pulley

I


23/30

IDLERS

1

2/7/2013

23

Carry Side Return Side

Self Alignment Impact Return Roller Return Adjustment Roller

( Installed after

every 25m )

Below Discharge

chute

( rubber coating )

35


24/30

ANGLEOFIDLERS

1

2/7/2013

24

Angle Merits Demerits

20 No middle idler is

overloaded

More Coal

Derailed

35 Coal not Derail. Middle idler is

overloaded


25/30

PROTECTIONSYSTEM

Interlockingis used for safety purpose.

If any belt fails all other belts stop working which

are interconnected.

Magnetic Separatoris used to remove metal

particle from coal conveyed through conveyor belt

for improving boiler efficiency.

1

2/7/2013

25


26/30

CRUSHINGMECHANISMINCHP

Three Stage Crushing System is used in Plant.

1.Double Roll Crusher

2.Rotary Breaker Crusher

3.Impact Crusher

1

2/7/2013

26

W / T No.4

DRCR RBCR Impact

250 mm 80 mm

600 mm

20-25 mmStage 1 Stage 2

Stage 3


27/30

DOUBLEROLLCRUSHER( DRCR )

1

2/7/2013

27

Teeth

Roller

300 mm


28/30

ROTARYBREAKERCRUSHER( RBCR )

1

2/7/2013

28

Striking Plate

Hole of diameter 100 mm

250 mm

80 mm

Stone

shell


29/30

IMPACTCRUSHER

1

2/7/2013

29

Hammer

30 mm Rotor

Coal


30/30

1

2/7/2013

30

chp in india

Documents