Maximum Continuous Rating (MCR)...............................................20 t/h
Design Pressure....................................... Pressure.....................................................................46.5 ..............................46.5 bar (g)
Steam Pressure at Superheater Outlet........................ Outlet...................................... ..............42 42 bar (g)
Steam Temperature at Superheater Outlet...................................435
0
C
Feed Water Temperature..............................................................105 Temperature..............................................................105
6 LIMITS OF SUPPLY................................................................................... 30 1.58 OUR OFFER DOES NOT INCLUDE (OUT OF SCOPE) ........................................31
7 POWER REQUIREMENT........................................................................... 32
MARSIMAX ADITYA RAJA DERADJAT 0818.062.22.062
P.T. ATMINDO-MEDAN
1 1.1
page 6
PRECONDITIONS FOR GUARANTEES REQUIREMENTS FOR THE GUARANTEED VALUES
1.1.1 FUEL COMPOSITION Fuel, Guarantee C S H N 0.7209 0.0029 0.0576 0.0088 Moisture content Moisture content, range Share Ash Ash content, range Bulk density Low Heating Value (LHV), range Low Heating Value (LHV), guarantee Sieve analysis
: O 0.1567
Cl ash 0.0023 0.0508 : 25 % : 20 - 30 % : 100 % : 5 % (approximately) :3โ7% : 780 kg/m3 (approximately) : 19.46 to 22.61 M J/ kg : 21.03 MJ/ kg : 0-30 mm (min 20 % < 5mm)
Coal test was performed in Pangkatan, North Sumatra with coal from the client, in sieve analysis of 15 to 25 mm, to acceptance. Therefore the spreader device shall be in pneumatic spreader feeder.
1.1.2 FEED WATER At continuous operation, measured upstream of boiler inlet, the general requirements are: clear, colourless and free from di ssolved matters. Inlet temperature : 105 0C pH value : 8.5 - 9.4 Sum of alkaline earths * (Ca2 + Mg2 +) : < 0.01 m mole/l Oxygen (O2) : < 0.02 mg/l Total iron (Fe) : < 0.05 mg/l Total copper (Cu) : < 0.01 mg/l Oil grease : < 1.00 mg/l Sum of alkaline earths โ previously total hardness, E.g. 0.01 m mol/l = 0.02 mval/l = 0,056 0D.
1.1.3 BOILER WATER Measured at continuous operation pH value Acid capacity up to pH 8.2 (KS 8.2)*
: 10 max. : 0.5 โ 6 m mole/l
MARSIMAX ADITYA RAJA DERADJAT 0818.062.22.062
P.T. ATMINDO-MEDAN
page 7
Conductivity at 25 0C Silica acid (SiO2) Phosphate KMnO4 consumption
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