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1. Basic Information of the Plant
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Description |
Value (min) |
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Clinker making capacity |
5350t/d |
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Output of thermo power station |
9MW |
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Annually average operation time |
7000h�?/SPAN>kiln 7200h�?/SPAN> |
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Annually power output |
5890×104kWh |
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Annually net supply power |
5478×104kWh |
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Power loss in line and others |
228.5×104kWh |
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Power station self used power |
7% |
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Power output for per ton Clinker |
35kWh/t |
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Building area of power station |
1370m2 |
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Total occupation of the station |
1970m2 |
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Total employees needed |
17 Persons (not included maintenance staff) |
2. Basic construction condition
2.1 Total layout condition
Power station shall have 5 independent buildings, that included: main power shop (steam turbine generating set room, station high and lower control panel room, power plant control centre), kiln head AQC boiler room, kiln end SP boiler room, circulation cooling water tower and pump room, demineralizing water plant. The main shop occupies 15X37.5 square meters, circling water tower and pump plant is 9.6X36square meters, demineralizing water plant is 15X12square meters.
The AQC flue gas waste heat captive boiler located near the Kiln clinker grate cooler, it occupies 9X12 + 6X10 square meters; the SP flue gas waste heat captive boiler located the upper space of the kiln end high temperature fan, it occupies area app. 15X12 square meters and also depend upon the base size of the Fan.
Among above mentioned system, AQC boiler, SP boiler, cooling tower, circulation water pumps are to be outdoor installed. The AQC, SP boiler just arranged as per the exist production line, the main power shop, demineralizing water plant and circulation tower and pump room had better installed in same place in order to short the pipe line distance.
2.2 Waste heat condition
5350t/d clinker product line
kiln head cooler have two line of waste flue gas
Medium temperature line
Waste flue gas flow rate (nominal): App. 260000Nm3/h,
Waste flue gas temperature: 340�?/SPAN>-350�?/SPAN>-400�?/SPAN>
Lower temperature line
Waste flue gas flow rate (nominal): App. 169000Nm3/h,
Waste flue gas temperature: 150�?/SPAN>-200�?/SPAN>,
For the medium temperature flue gas, that can be used for power generating. But of the lower temperature flue gas will be not captive due to the temperature is lower and which is varying greatly.
Kiln end preheated exhausted waste gas
Waste gas flow rate (standard condition): 290000Nm3/h
Waste gas temperature: 320�?/SPAN>
Above flue gas discharged from the heat captive boiler and the temperature will be decrease to 210-220�?/SPAN>and that can be drawn into raw meal drying system.
In the cement production line construction, the last stage preheat (top preheater) and flue gas pipe insulated normally not so heavy and heat loss and temperature reduced greatly. For installation the waste heat captive boiler, it shall be insulated the flue gas and pipe during the overhaul, after enforce the insulation, the flue gas into the SP boiler will be increased (higher than 330�?/SPAN>), so that increase the power output (it increases the 15kW for each 1 �?/SPAN>degree higher).
2.3 Chemicals
Heat captive power plant needed chemicals mainly are industrial salty (app. 45t/d), Na3PO4Ÿ12H2O (98%; 11t/d) and circulation water dosing (app. 4t/d). All above three chemicals are industrial products and available in the market.
2.4 Local meteorological data (please filled by the client)
2.4.1 Temperature:
Annually average
Daily: mean highest, mean lowest;
Monthly: mean highest, mean lowest;
Annually: extreme highest, extreme lowest;
2.4.2 Atmosphere pressure:
Winter monthly mean (Pa/m);
Summer monthly mean (Pa/m);
2.4.3 Relative humidity (%):
Dry season monthly mean;
Wet season monthly mean;
2.4.4 Precipitation (Rainfall):
Annual average (mm/a)
Monthly mean highest (mm/a);
One hour storm intensity (mm/a)�?o:p>
Mean thunder days annually
To be continued to
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