What questions do you usually ask when you go to a thermal power plant for an interview?

When you go to a thermal power plant for an interview, you usually ask: Tell me about yourself, why you came to apply for a job in our company, and how much you know about our company.

water is heated into steam in the boiler, further heated by the heater and turned into superheated steam, and then enters the steam turbine through the main steam pipeline. Due to the continuous expansion of steam, the high-speed flowing steam pushes the blades of the steam turbine to rotate, thus driving the generator.

in order to further improve its thermal efficiency, some steam that has done work is generally extracted from some intermediate stages of the steam turbine to heat the feed water. This feed water regenerative cycle is used in modern large steam turbines.

specific process:

coal is transported from the coal yard to the coal hopper by a coal conveyor belt. In order to improve the efficiency of coal burning, large thermal power plants all burn pulverized coal. Therefore, the raw coal in the coal hopper should be sent to the coal mill to be ground into pulverized coal. The pulverized coal is carried by hot air and sent to the furnace of the boiler for combustion by a powder exhaust fan. Hot flue gas formed after pulverized coal combustion flows along the horizontal flue and the tail flue of the boiler.

heat is released and finally enters the dust collector to separate the burnt coal ash. Clean flue gas is discharged into the atmosphere through the chimney under the action of induced draft fan. The air for combustion-supporting is sent into the air preheater installed on the tail flue by the blower, and the air is heated by hot flue gas. In this way, on the one hand, the temperature of air entering the boiler is increased, which is easy to ignite and burn pulverized coal.

above content reference: Baidu Encyclopedia-Thermal Power Plant