What is the principle of thermal power generation

7. Disadvantages

Smoke pollution

Acid gases such as SO2 and NOx produced by direct coal combustion have been increasing, which has aggravated acid rain in many areas of our country. The country produces 1.4 million tons of sulfur dioxide a year.

Dust pollution

Fly ash pollution is caused to the environment near the power station, which has adverse effects on people's life and plant growth. The country produces 15 million tons of soot every year.

Resource consumption

Power generation steam turbines usually use water as a cooling medium, and a 1000MW thermal power plant consumes about 100,000 tons of water per day. The country consumes 50 million tons of standard coal every year. Thermal power generation is seriously polluting, and the power industry has become one of the largest pollution-emitting industries in China.

improvement

Using pressure conversion technology to improve power generation efficiency; The dust is treated with desulfurization and dust removal or converted to natural gas; The gas turbine is cooled by air, and the consumption of stable voltage of the storage equipment is reduced to the extreme. In addition, the utilization rate of boiling water energy generated should be greatly improved on the existing basis, not only limited to recycling water resources and heating, should consider cooperation with thermal energy conversion stations.

8. Energy conversion

There are three types of energy conversion processes in thermal power generation: Fuel chemical energy → steam heat energy → mechanical energy → electrical energy is simply the use of fuel heating, heating water, forming high temperature and high pressure superheated steam, and then the steam enters the turbine along the pipeline to expand and do work, impact the turbine rotor to rotate at high speed, drive the generator rotor (electromagnetic field) to rotate, the stator coil cutting the magnetic field line, emit electrical energy, and then use the booster transformer. Rise to the system voltage, connect to the system, and transmit electrical energy to the outside. Finally, the cooled steam is further pressed by the feed pump and returned to the boiler to repeat the above cycle process.