ppt on Ash Management By :J.N. Dave (G.M.-Power) & D.S.Makwana (I/c. G.M.-PP)

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1 ppt on Ash Management By :J.N. Dave (G.M.-Power) & D.S.Makwana (I/c. G.M.-PP)

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3 Salient Features of Lignite Project Panandhro Village Panandhro, Fulra & Khanot Total Meter age of Exploration 10,757 m Total Exploration area km 2 No. of Exploration Boreholes 362 within lease area Taluka District State Lease Area Lease coordinate Commencement Period Mineral Mined Lignite excavated Mineable Reserves Overall Ratio Lakhpat Kutch Gujarat 1719 Hectare Latitude : 22 42'13" to 23 39'56" Longitude 64 45'00" to 68 44'55" Lignite and Limestone million tones 1.00 million tones 1 : 3.64 {Lignite(T) : Overburden (M3)}

4 Plantation on Backfilled Area at Panandhro Lignite Mine Constitute Total Moisture % Ash % Volatile Matter % Fixed Carbon % Calorific Value (Kcal/kg) Received Base analysis (Average (%)) Total area on which plantation carried out is : App. 300 hector.

5 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.

6 Akrimota Power Project Milestones 1 st unit Synchronized 31 st Mar st unit CoD 12 th March nd unit Synchronized 19 th December nd unit CoD 1 st May 2006 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, 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 % of total lignite feeding, same is being transported to mines, now we are planning to sale it to near by cement industries.

7 ATPS PLANT AND COLONY COLONY ATPS PLANT

8 Bed Ash Handling System Fly Ash Handling System

9 Toward boiler particle size between 90 to 300 micron Empty chamber First chamber Second chamber

10 2 nd chamber 1 st chamber Empty chamber Overflow ash

11 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.

12 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 UNBURNT MATTERS STICKNESS FLOWABILITY ABRASIVITY 300Tons/Day Less than 1% VERY LOW GOOD VERY HIGH

13 PURPOSE Conveying Fly Ash From ESP and Boiler Hoppers to Fly Ash Silo. HANDLING SYSTEM Pneumatic Dense Phase Conveying Through Compressed Air. CONVEYING CAPACITY CONVEYING DISTANCE CAPACITY OF FLY ASH SILO 220 Tons/Hr. 550 m 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

14 Electrostatic precipitator Fly Ash :- Flyash generated from ESP,We have Installed 14 field 02 pass ESP for Each unit which have the Pneumatic Ash conveying system

15 Intermediate system for optimum utilisation of ash to boiler having size of -2 mm as for bed charging.

16 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.

17 Transportation of Ash in covered dumper. Photo graph manifests transpiration of ash and lignite with covering of dumper.

18 Sl. No. Month Coal Consumed (MT) Ash Content of coal (%) Ash Generation (MT) Ash Utilized (MT) Ash Utilization in Percentage In Mine filling Fly Ash utilisation last FY : NAME OF POWER UTILITY:- GMDC LTD Monthly Abstract of Ash Generation and Utilization (For the period from 1st April, 2016 to 31st March, 2017) INSTALLED CAPACITY (Total): PERIOD OF REPORT: April, 2016 to March, MW (All Quantities in Metric Tonne) April May June July August September October November December January February March TOTAL 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.

19 Sl. No. Month Coal Consumed (MT) Ash Content of coal (%) Ash Generation (MT) Ash Utilized (MT) Ash Utilization in Percentage In Mine filling Fly Ash utilisation data from Half Yearly NAME OF POWER UTILITY:- GMDC LTD Monthly Abstract of Ash Generation and Utilization (For the period from 1st April, 2017 to 30th Sep, 2017) INSTALLED CAPACITY (Total): PERIOD OF REPORT: 250 MW April, 2017 to September,2017 (All Quantities in Metric Tonne) April May June July August September TOTAL 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.

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24 Migratory birds coming during winter season i.e. Famingo, Pelicon.

25 Migratory birds during winter season

26 Matanamadh mines

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28 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.

29 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.

30 Will encourage entrepreneur for public partnership business. To develop paver block. To develop ventilation block. And for bricks manufacturing.

31 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.

32 Central government and state government policy can help for increasing ash utilization, For development of reclaimed area can be used as tourism place.

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