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ppt on Ash Management By :J.N. Dave (G.M.-Power) & D.S.Makwana (I/c. G.M.-PP)
ppt on Ash Management
By :J.N. Dave (G.M.-Power) & D.S.Makwana (I/c. G.M.-PP)
Salient Features of Lignite Project Panandhro
Village Panandhro, Fulra & Khanot
Taluka Lakhpat
District Kutch
State Gujarat
Lease Area 1719 Hectare
Lease coordinate
Latitude : 22°42'13" to 23°39'56" Longitude 64°45'00" to 68°44'55"
Commencement Period
1973-74
Mineral Mined Lignite and Limestone
Lignite excavated 115.00 million tones
Mineable Reserves 1.00 million tones
Overall Ratio 1 : 3.64 {Lignite(T) : Overburden (M3)}
Total Meter age of Exploration
10,757 m
Total Exploration area 11.33 km2
No. of Exploration Boreholes
362 within lease area
Constitute Received Base analysis (Average (%))
Total Moisture 36.34 %
Ash 16.49 %
Volatile Matter 32.54 %
Fixed Carbon 14.63 %
Calorific Value (Kcal/kg)
3053.0
Plantation on Backfilled Area at Panandhro Lignite Mine
Total area on which plantation carried out is : App. 300 hector.
Modalities adopted for plantation . On excavated area , ash evacuated from power plant is
being utilized to fill up the area.
After filling the by ash , area is being covered by top soil having layer of 2.5 to 3.0 feet. Here the soil utilised is the same which has excavated to get approach to lignite.
On this area plantation is carried out .
Growth of plantation is found same as it is on normal soil.
Trees generally grows on this land. A). Pilu B). Goras Ambli. C). Desi Baboon. D). Ram Baboon.
Akrimota Power Project
GMDC has implemented 2 X 125 MW Akrimota Thermal Power Project at village Nani
Chher, Taluka Lakhapat, Dist. Kutchh, Gujarat State.
Both the units have been in commercial operation since March, 2007. It is a pit head lignite based thermal power plant getting lignite from its own mines at Panandhro.
The water requirement for the power plant is taken from the nearest Kori Creek through a 1.4k.m.long sea water intake channel. The CFBC boiler is used here as it is environment friendly and controls sulfur in the flue gas emission. A 100 metre green belt surrounds the entire site.
Ash production remains around 12-14 % of total lignite feeding , same is being transported to mines , now we are planning to sale it to near by cement industries .
Milestones
1st unit Synchronized
31st Mar. 2005
1st unit CoD 12th March 2007
2nd unit Synchronized
19thDecember 2005
2nd unit CoD 1st May 2006
COLONY
ATPS PLANT
ATPS PLANT AND COLONY
Bed Ash Handling System
Fly Ash Handling System
First chamber Empty
chamber
Second chamber
Toward boiler particle size between 90 to 300 micron
2nd chamber
Overflow
ash
1st chamber Empty chamber
Ash cooler for cooling of bed Ash coming out from Boiler . 1.Generally bed ash coming out from boiler contains higher temperature hence it is essential to cool it down to atmospheric temperature before it gets discharged to atmosphere. 2.Each boilers having two ash coolers which is equipped with cooling coils in which desal water gets circulated . Which carries heat of ash and it goes to second stage for further cooling . Water remains in closed circuit . 3.Also fluidizing nozzle are provided inside the Ash cooler so that whatever the ash comes inside the ash cooler gets fluidized and hot ash gets cooled within short period.
PURPOSE
◦ Conveying Bed Ash collected in intermediate Ash Bin to Bed & FLY Ash Silo.
HANDLING SYSTEM
◦ DPAC (Dense Phase Ash Conveying ) through compressed air.
CONVEYING CAPACITY
◦ 110 Tons/hr
CONVEYING DISTANCE
◦ 550 m
CAPACITY OF FLY ASH SILO
◦ 4x650 M Tons( 03 are for fly ash and one is for bed ash filling purpose.)
Ash Detail :
QUANTITY 300Tons/Day
UNBURNT MATTERS
Less than 1%
STICKNESS VERY LOW
FLOWABILITY GOOD
ABRASIVITY VERY HIGH
PURPOSE
Conveying Fly Ash From ESP and Boiler Hoppers to Fly Ash Silo.
HANDLING SYSTEM
Pneumatic Dense Phase Conveying Through Compressed Air.
CONVEYING CAPACITY
220 Tons/Hr.
CONVEYING DISTANCE 550 m
CAPACITY OF FLY ASH SILO
650 MT
Properties of Fly Ash
QUANTITY 900 Tons / Day
UNBURNT MATTER Less than 1%
STICKNESS Low
FLOWABILITY Good
ACIDITY Low
ABRASIVITY High
GYPSUM CONTENT Good
Fly Ash :- Flyash generated from ESP ,We have Installed 14 field 02 pass ESP for Each unit which have the Pneumatic Ash conveying system
Electrostatic precipitator
Intermediate system for optimum utilisation of ash to boiler having size of -2 mm as for bed charging.
Ash can be gainfully utilized as :
Stowing material in Underground
Mines.
Filling material for reclamation of
abandoned mines.
Filler material along-with
overburden of an operating mines.
Photo graph manifests transpiration of ash and lignite with covering of dumper.
Transportation of Ash in covered dumper.
Monthly Abstract of Ash Generation and Utilization
(For the period from 1st April, 2016 to 31st March, 2017)
NAME OF POWER UTILITY:- GMDC LTD
INSTALLED CAPACITY (Total): 250 MW
PERIOD OF REPORT: April, 2016 to March,2017
(All Quantities in Metric Tonne)
Sl.
No
.
Mo
nth
Co
al C
on
su
me
d (
MT
)
As
h C
on
ten
t o
f c
oa
l
(%)
As
h G
en
era
tio
n (
MT
)
As
h U
tili
ze
d (
MT
)
As
h U
tili
za
tio
n in
Pe
rce
nta
ge
In M
ine
fil
lin
g
1 2 3 4 5 6 7 15
1 April 114021.0 14.90 16989.1 14547.9 85.63 14547.85
2 May 93972.0 14.75 13860.9 13604.1 98.15 13604.08
3 June 97219.0 15.35 14923.1 15327.6 102.71 15327.64
4 July 108693.0 14.33 15575.7 17003.0 109.16 17003.02
5 August 85736.0 15.16 12997.6 7392.1 56.87 7392.11
6 September 116955.0 16.79 19636.7 25177.8 128.22 25177.79
7 October 130320.0 15.89 20704.1 22176.4 107.11 22176.40
8 November 87883.0 14.73 12942.2 19038.8 147.11 19038.80
9 December 127436.0 14.20 18095.9 33206.2 183.50 33206.17
10 January 118761.0 14.41 17116.9 37564.7 219.46 37564.67
11 February 79551.0 13.93 11082.3 23703.6 213.89 23703.62
12 March 123230.0 14.34 17669.6 33390.6 188.97 33390.58
TOTAL 1283777.0 14.92 191594.1 262132.7 136.82 262132.73
Fly Ash utilisation last FY : 16-17.
Note :More Ash utilization comes attributed to shifting of ash accumulated in earlier years, also water gets
mixed up before weighment and shifting to mines for fugitive dust control.
Monthly Abstract of Ash Generation and Utilization
(For the period from 1st April, 2017 to 30th Sep, 2017)
NAME OF POWER UTILITY:- GMDC LTD
INSTALLED CAPACITY (Total): 250 MW
PERIOD OF REPORT: April, 2017 to September,2017
(All Quantities in Metric Tonne)
Sl.
No
.
Mo
nth
Co
al C
on
su
med
(MT
)
Ash
Co
nte
nt
of
co
al
(%)
Ash
Gen
era
tio
n
(MT
)
Ash
Uti
lized
(M
T)
Ash
Uti
lizati
on
in
Perc
en
tag
e
In M
ine
fil
lin
g
1 2 3 4 5 6 7 15
1 April 114451.0 15.68 17945.9 26108.4 145.48 26108.43
2 May 107989.0 17.14 18504.7 29701.6 160.51 29701.62
3 June 95971.0 17.97 17246.0 25586.6 148.36 25586.56
4 July 89926.0 16.33 14684.9 14403.0 98.08 14402.99
5 August 117078.0 17.31 20262.0 25840.4 127.53 25840.44
6 September 50690.0 17.19 8713.6 20137.7 231.11 20137.70
TOTAL 576105.0 16.90 97357.2 141777.7 145.63 141777.74
Fly Ash utilisation data from Half Yearly
Note: More Ash utilization comes attributed to shifting of ash accumulated in earlier years, also water gets mixed up before weighment and shifting to mines for fugitive dust control.
Migratory birds coming during winter season i.e. Famingo , Pelicon.
Migratory birds during winter season
Matanamadh mines
It is proposed to convert this filled mine to a visiting place for Mining Engg students of not only from Gujarat but also from all across the India.
Preparation of a training gallery.
To built a model room where machinery/ equipment/mining processes involved during mining will be displayed.
Sequence wise mining operation process will be displayed with pictorial representation.
A 10KM long driving lane starting from the mouth of the pit up to the external dump covering the entire backfilled areas surrounded by dense forest (plantation)
A beautiful garden in front of the ADM building with proof of fossils & the rock mass handled during the mining process.
A kitchen garden where vegetables for the self consumption of the staff will be available.
Will encourage entrepreneur for public
partnership business.
To develop paver block.
To develop ventilation block.
And for bricks manufacturing.
Indian coal presents high ash content generally
which tends to be inconsistent.
Design of the system has to adequately cover
anticipated variations and be capable of handling
the worst scenario.
Handling required great care to avoid spillage to
protect environment.
No bricks manufacturing unit in nearby area.
Plant situated at remote place.
Central government and state government policy
can help for increasing ash utilization,
For development of reclaimed area can be used
as tourism place.
