Tuesday, February 7, 2012

Electric Power Production Process

The coal is unloaded from the ships at the Coal Jetty and scooped up by the Stacker Reclaimer (1) and then transferred by conveyors to the temporary stock through Telescopic Chute (2). Thereafter the coal will be sent to the Steam Generator. Following that, the coal is transferred through the Junction House (3) to the Scrapper Conveyor (4) and then to the Coal Bunker (5). Afterwards, the coal is channeled to the Coal Feeder (6) the which controls the flow of coal into the Pulverizer (7) where the coal is pulverized into fine powder, the which is picked up by a powerful stream of hot water from the Primary Air Fan (8) and then Carried to the Coal Burner (9) the which blows the coal into the Combustion Rooms, and burns like gas to convert water into steam. The hot water used by the Primary Air Fan is supplied by the Forced Draught Fan (10) the which draws the hot air from the upper part of the Boiler House and passes it through the Water Heater (11). The F.D. Fan also supplies water to the Coal Burner to support the combustion process. The results of the combustion process consist of ashes residue in a ratio of 14: 1. The ashes, the which drop to the bottom of the boilers, are our Periodically taken and stored. The residue from the burning process gases are sucked out from the boiler by the ID Fan (12) via the Electrostatic Precipitator (13) the which absorbs 99.5% of the flying dust and ashes with a high powered electrode system, and blow them up to the Stack (14). The ashes and dust are then collected and taken by a Pneumatic Gravity Conveyor to be used as material for the production of road, elements of cement and building blocks (bricks, conblock). The heat released by the burning fuel is absorbed by waterwalls of the boiler to be turned into saturated steam and it is further heated in the superheater (15), the which is then chaneled into the High Pressure Turbine (16) where it is discharged through nozzles onto the turbine blades. The force of the steam striking the blades makes the turbine rotate. After passing this High Pressure Turbine, the steam is returned to the boiler for reheating in the Reheater (17) before being applied to the Intermediate Pressure Turbine (18) and the Low Pressure Turbine (19). Meanwhile, the exhausted steam is turned back into water in the Condenser (23) by using Sea Water (26) supplied by CW Pump (32). The condensate water is then to be used again later in the boiler. The water is Pumped away from the condenser with a Condensate Extraction Pump (24) heated in the LP Heater (25) and up to the Deaerator (27) - a heated storage tank - then Pumped by the Boiler Feed Pump (28) through the HP Heater (29) where it is further heated before entering the boiler at the Economizer (30) then the water enters the steam drum (31). The L.P. Turbine shaft is coupled to the generator (20) - a large electromagnetic cylinder _ so when the turbine rotates That the rotor rotates with it. The generator rotor is enclosed in the stator (21). The stator is wound using internally cooled copper bars. Electricity is produced in the stator's copper bars by the electromagnet in the rotor through the rotation of the magnetic field. The electric voltage of 23 KV is then Increased to 500 000 volts by the Generator Transformer (22).

Coal is unloaded from ships at Coal Jetty and dredged using Stacker Reclaimer (1), and then transported by conveyor to temporary storage (Temporary Stock) through Telescopic Chute (2) to then be sent to the boiler. Furthermore, the coal is transferred through the Junction House (3) to the Scrapper Conveyor (4) and the Coal Bunker (5), forwarded to the Coal Feeder (6) which controls the amount of flow to the Pulverizer (7) in which the coal needs to be milled powder very fine like flour. The coal powder is mixed with hot air from the Primary Air Fan (8) and taken to the Coal Burner (9) that blow the coal into the combustion chamber for combustion processes such as gas and burned to turn water into steam. Hot air is used by P.A. Fan supplied from F.D. Fan (10) which suppress the hot air is passed through a Water Heater after (11). F.D. Fan also supplies air to the Coal Burner to support the combustion process. The results of the combustion process produces waste in the form of ashes in the ratio 14:1. Ash that fell to the bottom of the boiler is periodically removed and stored. Combustion gas is sucked out of the boiler by ID Fan (12) and passed through an Electric Precipitator (13) which absorbs 99.5% of fly ash and dust with electrode system that is blown into the chimney / stack (14). Ash and dust are then collected and taken with the Gravity Conveyor Pneumatic tools are used as material for road construction materials, cement and building materials (conblok). The heat generated from fuel combustion, is absorbed by the evaporator pipes / Waterwalls into saturated steam / wet steam is further heated by the superheater (15). Then the steam is supplied to the high pressure turbine HP Turbine (16), in which steam is pressed through a nozzle into the turbine blades. Power of steam turbine blades hit and makes the turbine spin. After going through H.P. Turbine, steam is returned to the boiler to be heated again in Reheater (17) before the steam is used in IP Turbine (18) and L.P. Turbine (19). Meanwhile, the former returned to the water vapor in Condensor (23) with sea water / Sea Water (26) is supplied by the CW Pump (32). Condensation of water will be reused in the boiler. Water is pumped from Condensor Condensate Extraction Pump with (24), heated again by the LP Heater (25), raised to Deaerator (27). Heating tank and then pumped by the Boiler Feed Pump (28) by HP Heater (29), where the water is further heated before entering the boiler at Economiser (30), then water into the steam drum (31). Low pressure turbine shaft is coupled to the generator rotor (20). Electromagnetic cylindrical rotor in size when the turbine rotates rotating part. Generator Generator Stator wrapped in (21). The stator is wound with copper rod. Electricity is generated in the stator by a copper bar rotor Electromagnetism through rotation of the magnetic field. Voltage is 23 kV and then raised to 500,000 Volt with Generator Transformer (22).

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