coal handling operational

8/13/2019 Coal Handling Operational

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S. Mugi RaharjoD&C Operator


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The coal-handling system of Sino-Java Power Plant of Indonesia is

designed according to the qualification of 2300MW coal-fired

generator unit. Coal-handling system is mainly made up with

program control, coal-handling equipment, coal unloading

equipment and coal yard equipment.

Installed capacity(MW) 2300

Coal storage quantity (Ton) 182.000

Hour coal consumption(t/h) 2152

Day coal consumption (t/d) 6080

Year coal consumption(t/y) 182.410

Notice: Its calculated by 20 hours per day and 6000 hours per year.


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Hardcoal,The caloriec value above 5700 kcal/kg (23,26 MJ/kg). Hardcoal terdiridari batubara steam, batubara coking, bituminous dan antrasit.

Steam CoalGros Caloric Value above 23.865,0 kJ/kg (5700 kcal/kg) use for steamgenerator

1. Antrasit

2. Bituminous

Cooking CoalGros Caloric Value greater than 23.865,0 kJ/kg (5700 kcal/kg) with dustfreeuse to made cocas raw reductor for blast furnace

Antrasit Coal - Gros Caloric Value 6900 kcal/kghave characteristic like steam coal withhigh quality and high caloric

Brown coal, low caloric value category, common use for power plant Subbituminous,

Gross Calorific value between17.435,0 kJ/kg (4165 kcal/kg) and 23.860,0 kJ/kg (5700 kcal/kg). Lignit (Low Rank Coal/Brown Coal), Gross Calorific value under 4.165 kcal/kg (17,44MJ/kg) with volatile matter above 31% at dry condition


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Save Coal Bunker Level, with scheduled

fetching

Arrange coal mixing

Stacking schedule for under 3 days and

finished it with reference optimum sea

level

Comand and coordinate with ABC subcontractor


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Belt Conveyor Ship Unloader Stacker Reclaimer Coal Crusher Roller screen Coal Plough Buffer air lock Rainwater scraper Electric triple damper Vibrator Belt iron remover Disc iron remover

Sewage pump Mechanical sampling equipment Three position telescopic head Automatic tensioning device Dedusting


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Fetching Coal transport Process from Coal Yard or from

Ship Unloader to Coal Bunker

Stacking

Coal transport Process from Ship Unloader to

Coal Yard


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C7 interlock only with C3A, can not interlock with C3B C1,C2, interlock with C3A & C3B can not interlock with one

of them. C7 and C8 can not remote stacking, local only In case C3A already runing and another lines C6B to C3B

will running, the normal sequence is C6B running first toC3B, but C6B and C3B will running first, it is not secured.Same case if C3B already running.

After flow chart is selected and already press Auto Start, allwill automatically running. The process can not be stop,although we unselected to cancel process. The solution is

press stop the selected motor manually. The operator mustbe know this, to prevent accident, because incidentally lateinformation from local site.


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coal handling operational

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